Flux light
Author: m | 2025-04-24
= luminous flux of the incident light on the material sample; 2 = luminous flux of the reflected light (reflectance). 2.1. The illumination angle of the luminous flux of the incident light on the sample Θ i shall be equal to 8 0.5 . 2.2. The luminous flux of the incident light on The light flux is measured in lumens (abbreviation lm). The unit lumen is an internationally standardized unit of measurement for the light flux of a light source. It indicates how much light
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Of 350 mA. Table 2 shows the light output flux and light output flux efficiency of PiS WLEDs and PiG WLEDs. The light output flux of the PiS WLED and the PiG WLED was 142.4 and 133.2 lm, respectively. Meanwhile, the light output flux efficiencies were 118 (PiS WLED) and 110 (PiG WLED) lm/W.Figure 3 shows the light-emitting path of the PiS WLED and the PiG WLED. We observed that in the yellow light emitted by the phosphor of the PiS WLED, blue light was emitted in all directions, and a small part of the light was refracted back to the interior and then reflected through the cavity of the lead-frame. The white light emitted by the PiG WLED blue excitation phosphor was also emitted in all directions. However, a part of the light was completely reflected or refracted back to the interior owing to the interface between the phosphor and the encapsulant, and it was reflected again through the light-receiving cavity of the lead-frame. Another part of the light was refracted back to the phosphor glass, and the light loss of repeated reflections resulted in the lower light output of the PiG WLED than that of the PiS WLED. 3.2. Dynamic Aging at Room TemperatureDynamic aging was performed at room temperature at the operating current of 350 mA for 1008 h to the capture light output flux, CCT, and color rendering index (CRI). Figure 4 shows that the normalized light output flux drift of the PiG WLED and the PiS WLED for 1008 h reached 110% and 111% of the initial value, respectively. Figure 5 shows the CCT drifts of the PiG WLED (+0.5%) and the PiS WLED (+0.2%). Figure 6 shows the CRI drifts of the PiG WLED and the PiS WLED at 0.8% and 0.7%, respectively. Table
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F.lux/Iris are:– 70-80% (varies from screen to screen) when running at 2700K CCT (correlated color temperature)– 94-98% when running at 1200KSee spectrograms below – click to enlarge – the first is with f.lux off, i.e. 6500K, second at 2700K, and third at 1200K)Blue light filter app efficiency NO FLux Spectrographic analysis" data-image-caption="" data-medium-file=" data-large-file=" loading="lazy" title="Blue light filter app efficiency NO FLux Spectrographic analysis" src=" alt="Blue light filter app efficiency NO FLux Spectrographic analysis" width="196" height="150" srcset=" 150w, 196w, 392w, 300w" sizes="(max-width: 196px) 100vw, 196px"> Blue light filter app efficiency FLux at 2700K Spectrographic analysis" data-image-caption="" data-medium-file=" data-large-file=" loading="lazy" title="Blue light filter app efficiency FLux at 2700K Spectrographic analysis" src=" alt="Blue light filter app efficiency FLux at 2700K Spectrographic analysis" width="207" height="150" srcset=" 150w, 207w, 414w, 300w" sizes="(max-width: 207px) 100vw, 207px"> Blue light filter app efficiency FLux at 1200K Spectrographic analysis" data-image-caption="" data-medium-file=" data-large-file=" loading="lazy" title="Blue light filter app efficiency FLux at 1200K Spectrographic analysis" src=" alt="Blue light filter app efficiency FLux at 1200K Spectrographic analysis" width="197" height="150" srcset=" 150w, 197w, 394w, 300w" sizes="(max-width: 197px) 100vw, 197px">As set by default, f.lux will run at 6500K during the day (no blue light reduction) and closer to 2700K at night. That might be fine if your problem is insomnia. To prevent eye strain, it is preferable to set f.lux/Iris to a lower CCT setting day and night.↑ Contents ↑DIY blue light filter app: Change screen colorsChanging text and especially background color is a free and easy DIY version of a (color transform) blue light filter app. Changing background and text color is a good option if you mostly read of the screen, edit text or work with spreadsheets.The advantage is that you can select any color you want and control the contrast level.Disadvantage: Not everything will appear as one would like to – particularly some buttons on web pages might be hidden or text on them invisible.Depending on your background/text color choice and digital screen model it may “filter” up to 75-95% of blue light as compared to black text on white background (estimates based on LEDMuseum and f.luxometer data).You may find detailed instructions on how to change background color and text color in:– Windows 7, Adobe Acrobat, Firefox, Chrome, Internet Explorer, etc… – Windows 10Choosing background color well is key to reducing blue light emissions of your digital screen; see Least likely colors to cause computer eye strain.Bluelight filter app & color changeYou can combine the two approaches, thus filtering blue light with the app and also being able to choose the colors your screen displays. Remember that the app will distort your colors, so if you care a lot about the exact colors displayed, you should set the app toFLUX Spotlight: ANDlight - Flux Lighting
The Biggest Brushless Short Course RTR Available!The Savage drivetrain is super flexible,allowing HPI monster trucks to reach legendary levels of durabilityand performance! Because of this extreme toughness, HPI designershave Super-sized the Savage to 1/5th scale, taking the Savage to anew dimension! The Super 5SC Flux takes the powerful Flux Tork2200KV motor and Blur speedo from the amazing Savage Flux HP fortruly impressive top speeds and plenty of wheel-spinning fun! TheSuper 5SC Flux is lighter than the Baja 5SC, so the power of theFlux Tork is a perfect match! With specialized parts to fit theBaja 5SC body, bumpers and wheels, from the outside the Super 5SCFlux looks just like its petrol-breathing stablemate. It’sonly when you switch it on and drive away that its secret isrevealed! Galleria.loadTheme('/assets/scripts/galleria_themes/classic/galleria.classic.js'); $('#galleria').galleria({ autoplay: 5000, width: 725, height: 460, transition: 'fade', lightbox: true, thumbFit: true, imageCrop: 'width', thumbCrop: 'width', preload: 3, extend: function() { var gallery = this; this.$('stage').hover(function() { gallery.pause(); }, function() { gallery.play(); }); } }); -->Watch the Bullet 3.0 in action! -->All of the latest HPI kits are now fittedwith the comfortable and feature-packed HPI TF-40 2.4GHzradio system for supreme control and confidence! Thelatest digital 2.4GHz radio technology allows you to confidentlydrive your HPI kit with other drivers without worrying about thingslike frequencies or radio conflicts. The radio features apistol-grip design with drop-down steering wheel, 3 channelfunctionality, easy carry handle, fold-down aerial, end pointadjustments, servo reversing and steering dual rate. It's alsoextremely lightweight due to it requiring only four AA batteries.This is a fully-featured, lightweight, 3-channel radio withadvanced ergonomic features and total adjustability. Set the radioup for your car with custom features like servo reversing, centretrim, end point adjustments, dual rate and more. Only 4 AAbatteries are required to power the TF-40, so it's light in yourhands, and the drop-down steering wheel makes it comfortable tohold. With the adjustable, built-in failsafe feature, you will evenbe protected just in case the radio batteries run out of power.TF-40 Radio Features SummaryDigital 2.4GHz technologyRun your HPI kit with other drivers without worrying aboutfrequencies!Adjustable built-in failsafe3 channelDrop-down steering wheel design for improved comfort and racerfeelServo end point adjustments for steering and throttleServo reversingSteering dual rateCentre trim (steering and throttle )Light weight (only 4 AA batteries required)Simple switch for legal use in France1/5TH SCALE RTR SAVAGE-BASED SHORT COURSE TRUCKBefore the Super 5SC Flux truck, you wouldhave had to modify existing cars and trucks to get an electric 1/5scale vehicle to wow your friends with. No longer! The Super 5SCFlux is the biggest brushless RTR vehicle available, and its sizeand speed means it will definitely win fans from the large-scalecommunity!FLUX BLUR SPEED CONTROLLER AND TORK 2200KV MOTORStraight from the Savage Flux HP truck comesthe Flux Blur speed controller and Flux. = luminous flux of the incident light on the material sample; 2 = luminous flux of the reflected light (reflectance). 2.1. The illumination angle of the luminous flux of the incident light on the sample Θ i shall be equal to 8 0.5 . 2.2. The luminous flux of the incident light on The light flux is measured in lumens (abbreviation lm). The unit lumen is an internationally standardized unit of measurement for the light flux of a light source. It indicates how much lightWelcome to FLUX 2.0 - Flux Lighting
Glass. Table 1. Light properties of PiS WLED doped with 8.5 and 9 wt.% YAG phosphors and PiG WLED covered with phosphor glass. SampleCCT (K)CCT Difference Range (K)CIE 1931 x,yPiG5564−44–+21(0.3306, 0.3750)PiS 8.5 wt.% 5469−69–+113(0.3278, 0.3746)PiS 9.0 wt.% 5311−39–+61(0.3382, 0.3937) Table 2. Light output flux of PiS WLED and PiG WLED. Table 2. Light output flux of PiS WLED and PiG WLED. SampleLight Output Flux (lm) Light Output Flux Efficiency (lm/W)PiS142.4 lm118 lm/WPiG133.2 lm110 lm/W Table 3. Normalized light output flux, CCT, and CRI of PiS WLED and PiG WLED, and measured data before and after 350 mA lighting for 1008 h. Table 3. Normalized light output flux, CCT, and CRI of PiS WLED and PiG WLED, and measured data before and after 350 mA lighting for 1008 h. SampleNormalizedLight Output Flux (%)CCT (K)CRI (Ra)0 h1008 hΔAverage (%)0 h1008 hΔAverage (%)PiS111%56525664+0.267.968.4+0.7PiG110%57385771+0.571.872.4+0.8 Table 4. Thermal properties of PiS WLED and PiG WLED. Table 4. Thermal properties of PiS WLED and PiG WLED. SampleTj (°C)Tc (°C)Tj − Tc (°C)Rth (°C/W) ΔRth (%)PiS88.456.831.637.4NAPiG81.351.030.335.6−4.0 Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( Share and Cite MDPI and ACS Style Huang, C.-C.; Weng, T.-H.; Lin, C.-L.; Su, Y.-K. Light Output, Thermal Properties, and Reliability of Using Glass Phosphors in WLED Packages. Coatings 2021, 11, 239. AMA Style Huang C-C, Weng T-H, Lin C-L, Su Y-K. Light Output, Thermal Properties, and Reliability of Using Glass Phosphors in WLED Packages. Coatings. 2021; 11(2):239. Chicago/Turabian Style Huang, Chin-Chuan, Tsung-Han Weng, Chun-Liang Lin, and Yan-Kuin Su. 2021. "Light Output, Thermal Properties, and Reliability of Using Glass Phosphors in WLED Packages" CoatingsNew FLUX Manufacturer: Liteline - Flux Lighting
Lumens to Lux Conversion CalculatorThis is an online calculator to convert lumens to lux. Just enter the lumens value and sphere radius to get the corresponding lux value.Enter the Lumens Value and Sphere Radius to Calculate LuxLuminous Flux in LumensSphere Radius in Feet or Meters Resultilluminance in LuxlxConversion EquationWhere 'r' is the radius of the sphere in feet.In case, If you would like to use meters instead of feet, then convert sq. feet to sq. meter.ie; 1 sq. mt. = 10.76391 sq. ft. LumenLumen is the SI unit of Luminous Flux. It indicates the total amount of visible light emitted from a source.Luminous Flux / Luminous Power is the amount of light energy radiated from a source in all directions per second and is denoted as F.LuxLux (lx) is the SI unit of illumination. It indicates the illumination intensity of an area.One Lux is equal to One Lumen per square meter.illuminance (Ev) is the amount of luminous flux per unit area.New FLUX Manufacturer: Luminart - Flux Lighting
Genres is almost unmatched. Before they got their chance on that stage, however, they turned in this fierce mix for Diplo & Friends. They put their powers of journey on display here, giving us everything from trap to drum & bass in a tightly-wound hour mix.Tracklist:Zeds Dead – RaveLifecycle – Zero XZeds Dead – Rumble in the Jungle (Sleepy Tom Edit)The others, Emalkay – FalloutOther Echos – FurtherJack Sparrow – Good Old DaysFlorance and teh Machine – No Light, No Light (Breakage’s One Moment Less For Mortimer Mix)Zeds Dead – PlayaZeds Dead and Omar LinX – Cowboy (Torro Torro Remix)Chuckie, Junxterjack – Make Some NoiseThe Prodigy – Breathe (Zeds Dead Remix)Corey Hart – Sunglasses At NightDaze – New York 1984 feat. Girl Is Tough (Le Crayon Remix)Zeds Dead – Mr. SubFrench Fries – Space AlarmMarina and the Diamonds – Lies (Zeds Dead Remix)Zeds Dead – TroubleZeds Dead – RatchetTNGT – GooooMayhem, Antiserum – Brick SquadMarlon Asher – Ganja FarmerPascal – P Funk EraZeds Dead and Omar LinX – The OneStyles P, AraabMuzik – Araab StylesPotential Badboy – Cant Stop Me VIP feat. Junior DangerousEnei – ElephantsWilkinson – Need To Know ft. ImanAZ – Your World Don’t StopZeds Dead and Omar LinX – Cowboy (Butch Clancy Remix)Flux Pavillion – Blow The RoofAngger Dimas – KitchenZeds Dead – DemonsOriginal Air Date: April 28, 2013Free Flux Pavilion mixes are a rarity these days, which sucks because he's really not just about the bombastic bass blasts in his previous releases. He's growing older, and as you saw in his Blow the Roof EP, Flux is growing a lot. He still keeps it rowdy, but he knows how to balance things properly.Tracklist:Odjbox and Pierre – L.A.L – Circus RecordsFlux Pavilion – OneTwoThree (Make Your Body Wanna) – Circus/AtlanticDoctor P – Champagne Bop – Circus/AtlanticBrown and Gammon – Dark Matter (Doctor P and Mizuki Remix) – Circus RecordsFlux Pavilion – Starlight – Circus/AtlanticFuntcase – Out For Da Milli – Circus RecordsCookie Monsta – Come Find Me feat Flux Pavilion – Circus RecordsFlux Pavilion – Do Or Die feat Childish Gambino – Circus RecordsSavant – Ghetto Blastah – SectionZ RecordsFuntcase – Voodew – Circus RecordsFlux Pavilion – Blow The Roof – Circus/AtlanticMajor Lazer – Watch out For This (Bumaye) – (Major Lazer)Flux Pavilion – Double Edge feat Sway and P money – Circus/AtlanticMizuki – Block Party – Circus Records / Dj Snake – Bird Machine – Mad DecentDoctor P – Flying Spaghetti Monster – Circus/AtlanticAutoErotique and Felix Cartel – The Alarm – Dim MakFlux Pavilion – I Feel It – Circus/AtlanticSkream – Sticky – AmmunitionMajor Lazer and Flux Pavilion – Jah No Partial (Jack Beats Remix) – (Lazer Strikes Back)Major Lazer and Flux Pavilion – Jah No Partial – DowtownMajor Lazer and Flux Pavilion – Jah No Partial (Nonsens Remix) – (Dub)Funtcase – Stomptown – Circus RecordsFuntcase and Cookie Monsta – Atom Bomb – Circus Records / Caspa – Marmite (Doctor P Remix) – Dub PoliceSkream – Scrooge’s Revenge – AmmunitionCookie Monsta – Cave Of Gold –New FLUX Manufacturer: Aaline - Flux Lighting
You read about illuminance on the one hand and about luminance on the other hand? And now you ask yourself: Is it the same? Or is there a difference between both terms? There are many terms used in the lighting world and often people use them interchangeably even if they have total different meanings. To stop your confusion we will tell you the exact meaning of luminance and illuminance in this article. ContentsIlluminance vs LuminanceWhat is luminous flux?What is illuminance?What is luminance?Shop Related ProductsHow do we measure illuminance and luminance?What are the differences between illuminance and luminance?ConclusionShop Related ProductsThese two terms seem to be similar at a first glance. This is why people use them interchangeably, yet the truth is that they have different meanings. This can be a cause for confusion and misunderstandings.We will distinguish between illuminance and luminance in the following paragraphs. But first, we need to take a look at another important term, the luminous flux.What is luminous flux?When buying a light bulb, you are usually concerned only about the amount of light emitted by the bulb. This amount of light is called the luminous flux or luminous power. It measures the visible light that comes from the source. The measurement used for luminous flux is the lumen.The number of lumens produced by a lighting fixture determines its brightness. But when choosing a lighting fixture, you should not base it on its lumen output alone. The reason for this is that lumens only measure the light being emitted by the light source. It does not measure the amount of light perceived by the human eye in a given application. It can result in an inaccurate image of the performance of the fixture.In other words, the lumen output should not be the determining factor for the suitability of a lighting fixture. In order to evaluate the lighting fixture, you should measure the illuminance and the luminance.What is illuminance?Illuminance is the intensity of light falling on a surface area, such as a wall or a desk. It is not the same as the amount of light produced by a light source. The illuminance is also called incident light. This incident is the beam of light actually landing on the surface.The illuminance will be of high value if the area illuminated is close to the light source. If the light lands on a horizontal surface, such as a desk, it. = luminous flux of the incident light on the material sample; 2 = luminous flux of the reflected light (reflectance). 2.1. The illumination angle of the luminous flux of the incident light on the sample Θ i shall be equal to 8 0.5 . 2.2. The luminous flux of the incident light on
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PPF to PPFD Calculator How to Use Our PPF to PPFD Calculator Our calculator simplifies the process of converting PPF to PPFD. Here's how to use it: Choose Your Calculation Mode Enter Total PPF if you know your light's PPF output Calculate PPF from Efficiency if you know your light's efficiency and power consumption Enter Light Source Information If using Enter Total PPF: Input the Total PPF output in μmol/s If using Calculate PPF from Efficiency: Enter the LED Lamp Efficiency in PPF/W or μmol/J Enter the Lamp Power in Watts Input Grow Area Dimensions Enter the Length of your target area in feet Enter the Width of your target area in feet Specify Light Efficiency Enter the percentage of light that reaches the target area (0-100%) This accounts for light lost to reflection or spillage Calculate PPFD Click the Calculate PPFD button The result will show the PPFD in μmol/m²/s Interpreting the Results The calculated PPFD value tells you the light intensity at your plant canopy level. Different plants have different light requirements: Low-light plants: 50-250 μmol/m²/s Medium-light plants: 250-450 μmol/m²/s High-light plants: 450+ μmol/m²/s Remember, these are general guidelines. Optimal PPFD can vary based on growth stage, photoperiod, and other environmental factors. Advanced Considerations Light Distribution: Our calculator assumes even light distribution. In reality, light intensity often varies across the growing area. For precise measurements, consider taking multiple PPFD readings at different points. Height Adjustment: Changing the height of your light source will affect PPFD. Generally, moving the light closer increases PPFD but reduces coverage area. Reflective Surfaces: Using reflective materials in your grow space can increase the effective PPFD by bouncing light back onto plants. Daily Light Integral (DLI): For a complete picture of light received by plants, consider calculating the DLI, which accounts for both PPFD and photoperiod. Understanding PPF to PPFD ConversionUnderstanding PPF to PPFD ConversionIn the world of horticulture and indoor growing, understanding light metrics is crucial for optimizing plant growth. Two key measurements that often come up are PPF (Photosynthetic Photon Flux) and PPFD (Photosynthetic Photon Flux Density). This guide will explain these concepts, their relationship, and how to use our calculator to convert between them.What is PPF?PPF, or Photosynthetic Photon Flux, measures the total amount of photosynthetically active radiation (PAR) emitted by a light source per second. It's expressed in micromoles per second (μmol/s). PPF tells you how much usable light your fixture produces. It's a measure of the light source's total output, regardless of the area it covers.What is PPFD?PPFD, or Photosynthetic Photon Flux Density, measures the amount of PAR that actually reaches and hits a specific area. It's expressed in micromoles per square meter per second (μmol/m²/s). PPFD tells you how much usable light is falling on your plants. It varies based on the distance from the light source and the coverage area. The Relationship Between PPF and PPFD PPF and PPFD are closely related but serve different purposes: PPF is about the light source's capability. PPFD is about theThe Lighting Exchange Introduction - Flux Lighting
07 Oct 2024 Tags: Electrical Engineering Illumination Engineering Light and illumination calculation Illumination Calculation Popularity: ⭐⭐⭐Illuminance CalculationThis calculator provides the calculation of illuminance for a given room.ExplanationCalculation Example: Illuminance is a measure of the amount of light that falls on a surface. It is measured in lux (lx). The illuminance at a point is determined by the luminous efficacy of the light source, the wattage of the light source, and the area and height of the room.Q: What is the difference between illuminance and luminous flux?A: Illuminance is a measure of the amount of light that falls on a surface, while luminous flux is a measure of the total amount of light emitted by a light source. Illuminance is measured in lux, while luminous flux is measured in lumens.Q: How does the height of a ceiling affect the illuminance of a room?A: The height of a ceiling affects the illuminance of a room because it changes the distance between the light source and the surface being illuminated. The higher the ceiling, the lower the illuminance.Variables Symbol Name Unit L Room Length m W Room Width m H Ceiling Height m LR Luminous Efficacy lm/W M Wattage W LL Desired Light Level lx Calculation ExpressionRoom Area: The area of the room is given by A = L * W.Room Volume: The volume of the room is given by V = A * H.Illuminance: The illuminance is given by E = (M * LR) / (A * H).CalculatorRoom Length (m): Room Width (m): Ceiling Height (m): Luminous Efficacy (lm/W): Wattage (W): Desired Light Level (lx): Calculated valuesConsidering these as variable values: LL=500.0, LR=100.0, W=4.0, H=3.0, L=6.0, M=100.0, the calculated value(s) are given in table below Derived Variable Value Room Volume 72.0 Room Area 24.0 Illuminance 138.8889 Sensitivity Analysis GraphsRoom Area: The area of the room is given by A = L * W.Impact of null on Room Area TGvar = [-23996.000 TO 24004.000] f(TGvar)=L * TGvar Impact of null on Room Area TGvar = [-23994.000 TO 24006.000] f(TGvar)=TGvar * W Similar Calculators Illuminance Calculations for Lighting Design Illuminance Calculations in Illumination Engineering Calculating Illumination Current Illumination Function Calculators Photographic Light Intensity Calculation Illuminance Calculation in Lighting Design Illumination Fixture Calculation Fixture Wattage Calculation for Illumination Design Illumination Fixture Wattage Calculation Tool Illumination Power CalculationExplore Lighting design Photometry Interior design A room measures 10m x 5m with a height of 3m. Calculate the. = luminous flux of the incident light on the material sample; 2 = luminous flux of the reflected light (reflectance). 2.1. The illumination angle of the luminous flux of the incident light on the sample Θ i shall be equal to 8 0.5 . 2.2. The luminous flux of the incident light onIC Light - Flux Lighting Residential
Thing than the Mauler.That's not particularly important vs. Ordos, of course. Logged My experience is more skewed towards Realistic Combat, but I find the Heavy Mortar excels in its role as stated."If employed against a large, unshielded, and slow-moving target, the Heavy Mortar can prove most effective."Heavy Mortar:Cheap to buy, $-wiseCheap to mount, OP-wiseBargain to fire, flux-wise (0.82 flux / damage)Heavy high-ex slugs that can punch through armor, 210 damage each (important for Realistic Combat, but also relevant for vanilla)In vanilla, it is competing with 2 other weapons for the role (medium ballistic High-ex).1) Heavy Mauler. Significantly worse DPS (120 vs 220), significantly worse flux efficiency (1 vs 0.82), significantly more OP cost (12 vs 7). Saving grace is significantly longer effective range, better accuracy even at max range, and heavier slugs. The problem with this though, is if I'm trying to fire at max range, I'm probably shooting against a target that is kiting, or an AI that can flutter it's shields, and either way these slugs are just hitting shields and not being nearly as effective as I need them to be.2) Assault chaingun. Massively more DPS, slightly better flux efficiency, moderately more OP cost. Two main drawbacks are, one, slightly lower damage/bullet which makes it more useful in a role of taking out destroyers and light cruisers than heavy cruisers and capitals, and two, it is basically a knife; accuracy is garbage once you start getting to its on-paper "max effective range". Even still, if half the rounds miss, you're still dealing about the same DPS as the heavy mortar, albeit now you're paying about twice the flux to do it. But it role serves it well; if you can stand toe-to-toe with the destroyer+ you're trying to fight, and you can knock out its shields, and you still have the flux to fire your chaingun(s), whatever you are facing will massively regret letting this scenario play out.I tend to only mount Heavy Mortars on hardpoints. Like a Berserker; much like an old school colonial-era infantry line, if I'm throwing a line of slow moving Heavy Mortar / Light Mortar slugs at you, you can't dodge them all, either something hits, or I've chosen the wrong target (like you're a phase skimmer....or a frigate and I'm an idiot trying to shoot giga-cannons at a flea) Logged I feel like as of now, the use case for heavyComments
Of 350 mA. Table 2 shows the light output flux and light output flux efficiency of PiS WLEDs and PiG WLEDs. The light output flux of the PiS WLED and the PiG WLED was 142.4 and 133.2 lm, respectively. Meanwhile, the light output flux efficiencies were 118 (PiS WLED) and 110 (PiG WLED) lm/W.Figure 3 shows the light-emitting path of the PiS WLED and the PiG WLED. We observed that in the yellow light emitted by the phosphor of the PiS WLED, blue light was emitted in all directions, and a small part of the light was refracted back to the interior and then reflected through the cavity of the lead-frame. The white light emitted by the PiG WLED blue excitation phosphor was also emitted in all directions. However, a part of the light was completely reflected or refracted back to the interior owing to the interface between the phosphor and the encapsulant, and it was reflected again through the light-receiving cavity of the lead-frame. Another part of the light was refracted back to the phosphor glass, and the light loss of repeated reflections resulted in the lower light output of the PiG WLED than that of the PiS WLED. 3.2. Dynamic Aging at Room TemperatureDynamic aging was performed at room temperature at the operating current of 350 mA for 1008 h to the capture light output flux, CCT, and color rendering index (CRI). Figure 4 shows that the normalized light output flux drift of the PiG WLED and the PiS WLED for 1008 h reached 110% and 111% of the initial value, respectively. Figure 5 shows the CCT drifts of the PiG WLED (+0.5%) and the PiS WLED (+0.2%). Figure 6 shows the CRI drifts of the PiG WLED and the PiS WLED at 0.8% and 0.7%, respectively. Table
2025-04-08F.lux/Iris are:– 70-80% (varies from screen to screen) when running at 2700K CCT (correlated color temperature)– 94-98% when running at 1200KSee spectrograms below – click to enlarge – the first is with f.lux off, i.e. 6500K, second at 2700K, and third at 1200K)Blue light filter app efficiency NO FLux Spectrographic analysis" data-image-caption="" data-medium-file=" data-large-file=" loading="lazy" title="Blue light filter app efficiency NO FLux Spectrographic analysis" src=" alt="Blue light filter app efficiency NO FLux Spectrographic analysis" width="196" height="150" srcset=" 150w, 196w, 392w, 300w" sizes="(max-width: 196px) 100vw, 196px"> Blue light filter app efficiency FLux at 2700K Spectrographic analysis" data-image-caption="" data-medium-file=" data-large-file=" loading="lazy" title="Blue light filter app efficiency FLux at 2700K Spectrographic analysis" src=" alt="Blue light filter app efficiency FLux at 2700K Spectrographic analysis" width="207" height="150" srcset=" 150w, 207w, 414w, 300w" sizes="(max-width: 207px) 100vw, 207px"> Blue light filter app efficiency FLux at 1200K Spectrographic analysis" data-image-caption="" data-medium-file=" data-large-file=" loading="lazy" title="Blue light filter app efficiency FLux at 1200K Spectrographic analysis" src=" alt="Blue light filter app efficiency FLux at 1200K Spectrographic analysis" width="197" height="150" srcset=" 150w, 197w, 394w, 300w" sizes="(max-width: 197px) 100vw, 197px">As set by default, f.lux will run at 6500K during the day (no blue light reduction) and closer to 2700K at night. That might be fine if your problem is insomnia. To prevent eye strain, it is preferable to set f.lux/Iris to a lower CCT setting day and night.↑ Contents ↑DIY blue light filter app: Change screen colorsChanging text and especially background color is a free and easy DIY version of a (color transform) blue light filter app. Changing background and text color is a good option if you mostly read of the screen, edit text or work with spreadsheets.The advantage is that you can select any color you want and control the contrast level.Disadvantage: Not everything will appear as one would like to – particularly some buttons on web pages might be hidden or text on them invisible.Depending on your background/text color choice and digital screen model it may “filter” up to 75-95% of blue light as compared to black text on white background (estimates based on LEDMuseum and f.luxometer data).You may find detailed instructions on how to change background color and text color in:– Windows 7, Adobe Acrobat, Firefox, Chrome, Internet Explorer, etc… – Windows 10Choosing background color well is key to reducing blue light emissions of your digital screen; see Least likely colors to cause computer eye strain.Bluelight filter app & color changeYou can combine the two approaches, thus filtering blue light with the app and also being able to choose the colors your screen displays. Remember that the app will distort your colors, so if you care a lot about the exact colors displayed, you should set the app to
2025-04-21Glass. Table 1. Light properties of PiS WLED doped with 8.5 and 9 wt.% YAG phosphors and PiG WLED covered with phosphor glass. SampleCCT (K)CCT Difference Range (K)CIE 1931 x,yPiG5564−44–+21(0.3306, 0.3750)PiS 8.5 wt.% 5469−69–+113(0.3278, 0.3746)PiS 9.0 wt.% 5311−39–+61(0.3382, 0.3937) Table 2. Light output flux of PiS WLED and PiG WLED. Table 2. Light output flux of PiS WLED and PiG WLED. SampleLight Output Flux (lm) Light Output Flux Efficiency (lm/W)PiS142.4 lm118 lm/WPiG133.2 lm110 lm/W Table 3. Normalized light output flux, CCT, and CRI of PiS WLED and PiG WLED, and measured data before and after 350 mA lighting for 1008 h. Table 3. Normalized light output flux, CCT, and CRI of PiS WLED and PiG WLED, and measured data before and after 350 mA lighting for 1008 h. SampleNormalizedLight Output Flux (%)CCT (K)CRI (Ra)0 h1008 hΔAverage (%)0 h1008 hΔAverage (%)PiS111%56525664+0.267.968.4+0.7PiG110%57385771+0.571.872.4+0.8 Table 4. Thermal properties of PiS WLED and PiG WLED. Table 4. Thermal properties of PiS WLED and PiG WLED. SampleTj (°C)Tc (°C)Tj − Tc (°C)Rth (°C/W) ΔRth (%)PiS88.456.831.637.4NAPiG81.351.030.335.6−4.0 Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( Share and Cite MDPI and ACS Style Huang, C.-C.; Weng, T.-H.; Lin, C.-L.; Su, Y.-K. Light Output, Thermal Properties, and Reliability of Using Glass Phosphors in WLED Packages. Coatings 2021, 11, 239. AMA Style Huang C-C, Weng T-H, Lin C-L, Su Y-K. Light Output, Thermal Properties, and Reliability of Using Glass Phosphors in WLED Packages. Coatings. 2021; 11(2):239. Chicago/Turabian Style Huang, Chin-Chuan, Tsung-Han Weng, Chun-Liang Lin, and Yan-Kuin Su. 2021. "Light Output, Thermal Properties, and Reliability of Using Glass Phosphors in WLED Packages" Coatings
2025-03-27Lumens to Lux Conversion CalculatorThis is an online calculator to convert lumens to lux. Just enter the lumens value and sphere radius to get the corresponding lux value.Enter the Lumens Value and Sphere Radius to Calculate LuxLuminous Flux in LumensSphere Radius in Feet or Meters Resultilluminance in LuxlxConversion EquationWhere 'r' is the radius of the sphere in feet.In case, If you would like to use meters instead of feet, then convert sq. feet to sq. meter.ie; 1 sq. mt. = 10.76391 sq. ft. LumenLumen is the SI unit of Luminous Flux. It indicates the total amount of visible light emitted from a source.Luminous Flux / Luminous Power is the amount of light energy radiated from a source in all directions per second and is denoted as F.LuxLux (lx) is the SI unit of illumination. It indicates the illumination intensity of an area.One Lux is equal to One Lumen per square meter.illuminance (Ev) is the amount of luminous flux per unit area.
2025-04-15You read about illuminance on the one hand and about luminance on the other hand? And now you ask yourself: Is it the same? Or is there a difference between both terms? There are many terms used in the lighting world and often people use them interchangeably even if they have total different meanings. To stop your confusion we will tell you the exact meaning of luminance and illuminance in this article. ContentsIlluminance vs LuminanceWhat is luminous flux?What is illuminance?What is luminance?Shop Related ProductsHow do we measure illuminance and luminance?What are the differences between illuminance and luminance?ConclusionShop Related ProductsThese two terms seem to be similar at a first glance. This is why people use them interchangeably, yet the truth is that they have different meanings. This can be a cause for confusion and misunderstandings.We will distinguish between illuminance and luminance in the following paragraphs. But first, we need to take a look at another important term, the luminous flux.What is luminous flux?When buying a light bulb, you are usually concerned only about the amount of light emitted by the bulb. This amount of light is called the luminous flux or luminous power. It measures the visible light that comes from the source. The measurement used for luminous flux is the lumen.The number of lumens produced by a lighting fixture determines its brightness. But when choosing a lighting fixture, you should not base it on its lumen output alone. The reason for this is that lumens only measure the light being emitted by the light source. It does not measure the amount of light perceived by the human eye in a given application. It can result in an inaccurate image of the performance of the fixture.In other words, the lumen output should not be the determining factor for the suitability of a lighting fixture. In order to evaluate the lighting fixture, you should measure the illuminance and the luminance.What is illuminance?Illuminance is the intensity of light falling on a surface area, such as a wall or a desk. It is not the same as the amount of light produced by a light source. The illuminance is also called incident light. This incident is the beam of light actually landing on the surface.The illuminance will be of high value if the area illuminated is close to the light source. If the light lands on a horizontal surface, such as a desk, it
2025-03-31PPF to PPFD Calculator How to Use Our PPF to PPFD Calculator Our calculator simplifies the process of converting PPF to PPFD. Here's how to use it: Choose Your Calculation Mode Enter Total PPF if you know your light's PPF output Calculate PPF from Efficiency if you know your light's efficiency and power consumption Enter Light Source Information If using Enter Total PPF: Input the Total PPF output in μmol/s If using Calculate PPF from Efficiency: Enter the LED Lamp Efficiency in PPF/W or μmol/J Enter the Lamp Power in Watts Input Grow Area Dimensions Enter the Length of your target area in feet Enter the Width of your target area in feet Specify Light Efficiency Enter the percentage of light that reaches the target area (0-100%) This accounts for light lost to reflection or spillage Calculate PPFD Click the Calculate PPFD button The result will show the PPFD in μmol/m²/s Interpreting the Results The calculated PPFD value tells you the light intensity at your plant canopy level. Different plants have different light requirements: Low-light plants: 50-250 μmol/m²/s Medium-light plants: 250-450 μmol/m²/s High-light plants: 450+ μmol/m²/s Remember, these are general guidelines. Optimal PPFD can vary based on growth stage, photoperiod, and other environmental factors. Advanced Considerations Light Distribution: Our calculator assumes even light distribution. In reality, light intensity often varies across the growing area. For precise measurements, consider taking multiple PPFD readings at different points. Height Adjustment: Changing the height of your light source will affect PPFD. Generally, moving the light closer increases PPFD but reduces coverage area. Reflective Surfaces: Using reflective materials in your grow space can increase the effective PPFD by bouncing light back onto plants. Daily Light Integral (DLI): For a complete picture of light received by plants, consider calculating the DLI, which accounts for both PPFD and photoperiod. Understanding PPF to PPFD ConversionUnderstanding PPF to PPFD ConversionIn the world of horticulture and indoor growing, understanding light metrics is crucial for optimizing plant growth. Two key measurements that often come up are PPF (Photosynthetic Photon Flux) and PPFD (Photosynthetic Photon Flux Density). This guide will explain these concepts, their relationship, and how to use our calculator to convert between them.What is PPF?PPF, or Photosynthetic Photon Flux, measures the total amount of photosynthetically active radiation (PAR) emitted by a light source per second. It's expressed in micromoles per second (μmol/s). PPF tells you how much usable light your fixture produces. It's a measure of the light source's total output, regardless of the area it covers.What is PPFD?PPFD, or Photosynthetic Photon Flux Density, measures the amount of PAR that actually reaches and hits a specific area. It's expressed in micromoles per square meter per second (μmol/m²/s). PPFD tells you how much usable light is falling on your plants. It varies based on the distance from the light source and the coverage area. The Relationship Between PPF and PPFD PPF and PPFD are closely related but serve different purposes: PPF is about the light source's capability. PPFD is about the
2025-04-06