Reflector Lamp
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400 Watt HPS Bulb Grow Light System Indoor Garden 400W Sun Lamp Wing Reflector |  |
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US $152.90 | 6h 32m |
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400 Watt Digital HPS+MH Grow Light Sun System 400W Hood Reflector Lamp Ballast | |
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US $159.95 | 8h 32m |
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1000W Digital HPS Grow Light Air Cooled Reflector Hood 1000 Watt Sun Lamp System | |
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US $325.95 | 8h 52m |
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1000 Watts HPS Grow Light Kit 3.5' Reflector Hood Ballast Sun Lamp System 1000W | |
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US $283.95 | 9h 24m |
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1000w HPS+MH Halide Grow Light Air Cooled Hood Reflector Sun Lamp 1000 Watt Bulb | |
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US $320.90 | 9h 48m |
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250 Watts Digital HPS+MH Grow Light Giant Hood Sun Lamp Reflector Ballast 250W | |
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US $119.90 | 3d 12h 31m |
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400 Watts HPS+MH Grow Light Wing Reflector Hood Magnetic Ballast Sun Lamp System | |
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US $199.90 | 11h 42m |
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1000 Watt HPS+MH Grow Light 42" HV Reflector Magnetic Ballast Sun Lamp Kit 1000W | |
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US $277.95 | 12h 53m |
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1000W HPS Grow Light Air Cooled Reflector Hood Ballast 1000 Watt Sun Lamp System | |
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US $304.95 | 1d 18m |
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1000 Watts HPS Digital Grow Light Kit 42" HV Reflector Hood Ballast Lamp 1000W | |
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US $304.90 | 1d 3h 7m |
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400 Watt Digital Metal Halide Grow Light Kit Reflector MH bulb Lamp 400W Ballast | |
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US $148.95 | 1d 6h 43m |
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24" 4X27 Tube German Reflector T5 HO Light Fluorescent Grow System 2ft Lamp Bulb | |
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US $110.90 | 1d 8h 28m |
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250 Watts Digital HPS Grow Light Giant Wing Hood Sun Lamp Reflector Ballast 250W | |
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US $131.90 | 1d 11h 28m |
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600W HPS Grow Light Kit Air Cooled Reflector Hood Ballast Sun Lamp 600 Watt Gift | |
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US $272.90 | 1d 13h 34m |
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1000w 6" Air cooled Hood w/ Cool Tube Reflector HPS+MH Grow Light 1000 Watt Lamp | |
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US $331.95 | 2d 2h 13m |
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600W HPS Digital Grow Light 42" HV Reflector Hood Ballast Sun Lamp Kit 600 Watt | |
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US $220.95 | 2d 12h 17m |
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1000w Lumatek Ballast Great White 6" Reflector HPS Lamp - grow light fixture | |
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US $519.99 | 26d 9h 24m |
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Virtual Sun 1000W HPS Cool Tube Reflector Grow Light Lamp Kit System - 1000 Watt | |
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US $234.99 | 5d 3h 1m |
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1000 Watt HPS+MH Grow Light Wing Reflector Hood 1000W Sun Lamp Hydroponic System | |
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US $239.90 | 25d 10h 36m |
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1000w Lumatek Ballast Xtrasun 6" Reflector HPS Lamp 6 in. - grow light fixture | |
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US $376.00 | 26d 9h 24m |
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Reflector Lamp
Why do you get a lot more light from a diffuser lamp than you would just with a bulb?
Isn't that an oddity of physics? I mean here you are, a little lightbulb in your hand - not much happening; then you put a diffuser or reflector behind it, and you get this huge burst of light. Doesn't that mean that the light has multiplied without extra energy input? That's impossible though. What's happening there?
Not an expert, but let me try:
You and @steve are correct, the amount of lumens (a measure for the visible light-"current") coming out of the lamp does NOT change.
The small filament area of the bulb has an even light light distribution in all directions. Assuming the room is predominantly 'black', with few reflections coming back to you, you see only what enters into your pupil, coming DIRECTLY from the (almost) point source.
I am too lazy to do the calculation, but you are NOT seeing maybe > 99.99+ % of the lumens emanating from the point source.
The magic words in your question are "reflector", and "behind" the point source:
If you use a reflector e.g. a white sheet of paper/ cardboard with typically a Lambertian (cosine) re-distribution, you are looking at factors of "amplification":
One, most of the light sent out to the rear of the bulb (which was lost anyway) is now redirected to you, or to objects in the vicinity of the bulb.
The second effect is 'saturation' on the retina. With a point source the sensor on the retina cannot integrate in linear fashion, the "brightness" of the point source. When that light however is spread out, because of the paper diffusor, over a larger area on the retina, it is messaged to the brain as being "brighter".
PS the lens of your eye, when it creates an image of an "area source" (e.g. the sheet of paper) in the room will always focus the SAME number of lumens PER AREA on your retina, this irrespective of its distance from you. That is why objects have identical "surface brightness" as interpreted by your retina (repeat, regardless of distance). If the objects were true point sources their light intensity would decrease with the inverse of the distance squared. And second, because most objects have a Lambertian distribution that "surface brightness" stays IDENTICAL, even when it is tilted at an angle to you.
Make from your energy saving lamp a reflector lamp!
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400 Watt HPS Bulb Grow Light System Indoor Garden 400W Sun Lamp Wing Reflector | |
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US $152.90 | 6h 32m |
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400 Watt Digital HPS+MH Grow Light Sun System 400W Hood Reflector Lamp Ballast | |
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US $159.95 | 8h 32m |
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1000W Digital HPS Grow Light Air Cooled Reflector Hood 1000 Watt Sun Lamp System | |
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US $325.95 | 8h 52m |
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1000 Watts HPS Grow Light Kit 3.5' Reflector Hood Ballast Sun Lamp System 1000W | |
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US $283.95 | 9h 24m |
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1000w HPS+MH Halide Grow Light Air Cooled Hood Reflector Sun Lamp 1000 Watt Bulb | |
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US $320.90 | 9h 48m |
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250 Watts Digital HPS+MH Grow Light Giant Hood Sun Lamp Reflector Ballast 250W | |
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US $119.90 | 3d 12h 31m |
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400 Watts HPS+MH Grow Light Wing Reflector Hood Magnetic Ballast Sun Lamp System | |
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US $199.90 | 11h 42m |
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1000 Watt HPS+MH Grow Light 42" HV Reflector Magnetic Ballast Sun Lamp Kit 1000W | |
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US $277.95 | 12h 53m |
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1000W HPS Grow Light Air Cooled Reflector Hood Ballast 1000 Watt Sun Lamp System | |
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US $304.95 | 1d 18m |
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1000 Watts HPS Digital Grow Light Kit 42" HV Reflector Hood Ballast Lamp 1000W | |
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US $304.90 | 1d 3h 7m |
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400 Watt Digital Metal Halide Grow Light Kit Reflector MH bulb Lamp 400W Ballast | |
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US $148.95 | 1d 6h 43m |
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24" 4X27 Tube German Reflector T5 HO Light Fluorescent Grow System 2ft Lamp Bulb | |
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US $110.90 | 1d 8h 28m |
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250 Watts Digital HPS Grow Light Giant Wing Hood Sun Lamp Reflector Ballast 250W | |
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US $131.90 | 1d 11h 27m |
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600W HPS Grow Light Kit Air Cooled Reflector Hood Ballast Sun Lamp 600 Watt Gift | |
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US $272.90 | 1d 13h 34m |
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1000w 6" Air cooled Hood w/ Cool Tube Reflector HPS+MH Grow Light 1000 Watt Lamp | |
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US $331.95 | 2d 2h 13m |
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600W HPS Digital Grow Light 42" HV Reflector Hood Ballast Sun Lamp Kit 600 Watt | |
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US $220.95 | 2d 12h 17m |
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1000w Lumatek Ballast Great White 6" Reflector HPS Lamp - grow light fixture | |
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US $519.99 | 26d 9h 24m |
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Virtual Sun 1000W HPS Cool Tube Reflector Grow Light Lamp Kit System - 1000 Watt | |
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US $234.99 | 5d 3h 1m |
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1000 Watt HPS+MH Grow Light Wing Reflector Hood 1000W Sun Lamp Hydroponic System | |
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US $239.90 | 25d 10h 36m |
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1000w Lumatek Ballast Xtrasun 6" Reflector HPS Lamp 6 in. - grow light fixture | |
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US $376.00 | 26d 9h 24m |
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6" AIR COOLED REFLECTOR LARGE 26" x 29" 1000W HPS GROW LAMP HYDROPONIC H048 | |
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US $129.95 | 17d 23h 10m |
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Bright Wing Reflector w/ 200 Watt 2700K Fluorescent LAMP Hydroponic | |
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US $98.99 | 2d 18h 54m |
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Virtual Sun VSGC6000 6" Grow Light Lamp Enclosed Reflector Hood -1000W 600W 400W | |
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US $89.99 | 14d 10h 7m |
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Light Rail 3.5 4.0 - Robo Stik Lamp Stabilizing Bar - hanger move reflector | |
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US $29.95 | 23d 11h 26m |
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Sun System BlockBuster 6" Reflector Grow Lamp Fixture | |
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US $167.94 | 5d 22h 17m |
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HL Econo Wing Reflector Hydroponic Grow Lamp Fixture Econowing | |
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US $35.00 | 27d 10h 6m |
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BLAZER 6" AIR COOLED REFLECTOR HOOD GROW LIGHT LAMP | |
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US $158.99 | 28d 24m |
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Adjust A Wing Alternative Econowing Reflector With Socket And Lamp Cord | |
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US $37.00 | 6d 5h 29m |
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250w Lumatek Ballast Xtrasun 6" Reflector MH & HPS Lamp - grow light fixture | |
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US $286.99 | 26d 9h 25m |
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250w Lumatek Ballast Xtrasun 6" Reflector HPS Lamp 250 watt - grow light fixture | |
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US $271.99 | 26d 9h 25m |
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Sunburst 400w MH w/ Lamp Ballast Reflector System Hydro - grow light fixture | |
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US $199.95 | 26d 9h 28m |
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Sunburst 400w HPS w Lamp Ballast Reflector System Hydro - grow light fixture | |
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US $170.00 | 26d 9h 28m |
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250w Lumatek Ballast Xtrasun 8" Reflector MH & HPS Lamp - grow light fixture | |
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US $321.99 | 26d 9h 25m |
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250w Lumatek Ballast Xtrasun 8" Reflector HPS Lamp 250 - grow light fixture | |
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US $306.99 | 26d 9h 25m |
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400 watt DIGITAL GROW LIGHT Kit 400w HPS w BALLAST BULB HOOD Sodium Halide MH | |
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US $124.95 | 27d 32m |
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400 watt DIMMABLE DIGITAL GROW LIGHT KIT 400w HPS w BALLAST BULB HOOD Sodium 600 | |
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US $134.95 | 26d 23h 41m |
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YIELD MASTER II 6” CLASSIC Light Reflector Hood Air Cooled MH HPS Lamp | |
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US $119.95 | 21d 6h 29m |
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Sun System COOL SUN 6" Light Reflector Hood Air Cooled MH HPS Lamp Fixture | |
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US $145.95 | 21d 6h 50m |
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Sun Systems BLOCKBUSTER 6” Light Reflector Hood Air Cooled MH HPS Lamp Fixture | |
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US $178.95 | 20d 13h |
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YIELD MASTER II 6” SUPREME Light Reflector Hood Air Cooled MH HPS Lamp | |
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US $127.95 | 20d 12h 44m |
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Sun Systems BLAZER 6” Light Reflector Hood Air Cooled MH HPS Lamp Fixture | |
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US $157.95 | 20d 12h 43m |
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SUPER SUN 2 Light REFLECTOR 6” Air Cooled Hood HPS MH Grow Light Lamp Fixture | |
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US $124.95 | 20d 12h 44m |
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Sun System SUPER SUN Light Reflector Hood Cooled MH HPS Lamp Fixture | |
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US $125.95 | 21d 6h 39m |
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Digital 600 watt HPS GROW LIGHT 600w w reflector lamp | |
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US $237.95 | 21d 4h 10m |
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Digital 600 watt HPS MH GROW LIGHT 600w reflector lamp | |
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US $287.95 | 21d 4h 7m |
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DIGITAL 1000 watt HPS GROW LIGHT 1000w reflector lamp | |
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US $351.95 | 17d 23h 49m |
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NEW! LIGHT REFLECTOR LUXOR 8" VERTICAL LAMP CONFIG. | |
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US $329.95 | 14d 5h 4m |
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CAP VERTILUME 42" PARABOLIC REFLECTOR SOCKET LAMP CORD | |
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US $92.95 | 12d 7h 9m |
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41" Parabolic Reflector GROW LIGHT - MH and HPS Lamps | |
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US $69.95 | 18d 2h 4m |
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CAP LUMEWING REFLECTOR W/SOCKET & LAMP CORD | |
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US $48.95 | 12d 7h 14m |
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LOT 4 HYDROFARM 1000W 6" GROW LIGHT REFLECTOR LAMP HOOD | |
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US $199.98 | 10d 5h 25m |
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ROBO STICK FOR LIGHT RAIL 3.5 4.0 REFLECTOR LIGHT LAMP STABILIZER HYDROPONICS | |
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US $38.95 | 10d 7h 47m |
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GROWLUSH 130W FLUORO LAMP 6400K + HR REFLECTOR | |
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US $49.00 | 9d 9h 11m |
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400 Watt Digital HPS+MH Grow Light Sun System 400W Tube Reflector Lamp Ballast | |
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US $165.00 | 8d 6h 53m |
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Sun System Blazer 6" Reflector Grow Lamp Fixture | |
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US $159.94 | 8d 1h 52m |
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GROWLUSH 130W FLUORO LAMP 2700K + HR REFLECTOR | |
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US $50.00 | 9d 9h 18m |
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GROWLUSH 130W FLUORO LAMP 14000K + HR REFLECTOR | |
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US $70.00 | 9d 9h 24m |
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Sun System 6" Sun Tube Reflector Grow Lamp Fixture | |
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US $128.94 | 5d 21h 58m |
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Sun System BlockBuster 8" Reflector Grow Lamp Fixture | |
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US $179.99 | 5d 22h 21m |
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Sun Systems BLAZER 8” Light Reflector Hood Air Cooled MH HPS Lamp Fixture | |
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US $177.95 | 6d 3h 22m |
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NEW LIGHT RAIL Horizontal Reflector Grow Lamp Robo Stik | |
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US $29.95 | 5d 8h 13m |
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‹(•¿•)› 6"x36" cool tube reflector-dual lamp‹(•¿• | |
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US $129.95 | 2d 5h 52m |
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Dual Lamp T5 Fluorescent Bulb Grow Light Hood Reflector Hydroponics Kit | |
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US $89.99 | 5d 3h 21m |
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Bright Wing Reflector w/ 250 Watt 2700K Fluorescent LAMP Hydroponic | |
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US $110.99 | 2d 18h 54m |
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Bright Wing Reflector 125 Watt 6500K Fluorescent LAMP Hydroponics | |
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US $69.99 | 2d 18h 54m |
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Bright Wing Reflector w/ 250 Watt 6500K LAMP Hydroponic | |
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US $110.99 | 2d 18h 56m |
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Virtual Sun 400W HPS+MH Wing Reflector Grow Lamp Light System - 3 Pack | |
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US $469.99 | 4d 5h 27m |
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Bright Wing Reflector w/ 125 Watt 6500K LAMP Hydroponic Fluorescent | |
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US $69.99 | 2d 18h 55m |
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NEW Light Rail 3.5 Robo Stick Lamp Stabilizer Reflector | |
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US $44.50 | 32m |
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1000 Watt HPS MH Grow Light Ballast Lamp Reflector Kit | |
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US $259.00 | 9d 6h 17m |
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