GE "reveal" lightbulb

[Jerboy]

Has anyone used these? What did you think of it?

GE reveal is a lightbulb made with glass with slight blue tint to it as to filter out some yellow light to bring the light closer to natural light. I got a pair at a dept store since it was on promotion and $1.25 for two. It makes the light look slightly less yellower and approach the color of halogen lamps, but it still looks incandescent. You probably won't notice I have Reveal in use unless I use it side by side with regular lightbulb. I'm back to using 5,000K full spectrum (white as daylight) fluorescent. 5,000K regular is not the same as full spectrum by the way. It does cost $15 a tube, but I guess you get what you pay for..

 

[sharkeeper]

An incandescent bulb produces mostly infrared radiation so it has a predominately red output. There is no way to get around this limitation. Yes it's possible to drive the filaments harder to increase the temperature which makes the overall colour temperature warmer but you can only push it so far. Halogen gases tend to increase the filament life to allow over driving, but the problem of producing excessive heat still exists. Adding a filter to the envelope may shift the overall appearance of the lamp, but hastens the problem. Ever see those incandescent black light bulbs? They put out very little longwave UV but get hotter than a thunderbird in Marlboro mode!

Broad spectrum high intensity discharge lamps have better efficacy and higher colour temps. Few produce a CRI as high as sunlight but some are close. Solid state emitting devices will soon be taking over bringing an end to the incandescent era.

Cheers!

 

[Jerboy]

Originally posted by: sharkeeper
An incandescent bulb produces mostly infrared radiation so it has a predominately red output. There is no way to get around this limitation. Yes it's possible to drive the filaments harder to increase the temperature which makes the overall colour temperature warmer but you can only push it so far. Halogen gases tend to increase the filament life to allow over driving, but the problem of producing excessive heat still exists. Adding a filter to the envelope may shift the overall appearance of the lamp, but hastens the problem. Ever see those incandescent black light bulbs? They put out very little longwave UV but get hotter than a thunderbird in Marlboro mode!

Broad spectrum high intensity discharge lamps have better efficacy and higher colour temps. Few produce a CRI as high as sunlight but some are close. Solid state emitting devices will soon be taking over bringing an end to the incandescent era.

Cheers!

I use three Philips F32T8/TL950 for my computer area. 5,000K and amazing 98CRI. I have three lamps, rather than two, because this lamp is less efficient than CRI 80's and needs one more bulb to compensate for this.

I can't believe they charge you $15 a piece for this though :disgust:

 

I put a couple of these in at work the other day behind a frosted glass bubble in a light fixture - they seem like a gimmick to me...I could tell NO difference.

 

[aphex]

I noticed a BIG difference when we installed them in the kitchen (overhead lights) and then in my room. Not only do the lights look whiter, but it really makes the room look better and cleaner. Reveal are the only bulbs im buying from now on....

When my digital camera comes in today or friday, i'll take some pictures to show you the difference, its VERY noticible IMO.

 

[dfi]

Hrm, didn't know there was a difference. However, ever since I got these new energy saving lightbulbs (suppose to give out 100 watt light for 22 watts?), my room has seemed a lot yellower. It's actually quite annoying, but I thought it was just me.

What's the best kind of lightbulbs to get for whiter, more natural, lighting?

dfi

 

[spazntwich1]

Originally posted by: dfi
What's the best kind of lightbulbs to get for whiter, more natural, lighting?

A sunroof.

Uhh, just kidding. I think white LED's produce the most even-spectrummed white light.

 

[Smaulz]

Wasn't impressed... the ones I got give off a pinkish tinge.... kinda makes the room look a little fruity....

 

[brtspears2]

The bulbs sure do give off a nice, calming light to the room.

 

[pac1085]

There ok....I bought a few. Feels more comfortable in my room with them.

 

[Kjazlaw]

You can buy home depot PC bulbs @ 6500K, which is actually closer to the spectrum of daylight. Its appearance is more bluish than most bulbs.

 

[Peyton]

They dont last very long at all.I have them in the living room(4) and they blow all the time.Probably six in the last four months.I keep buying them because I dont wont to change all four.But I have one out NOW and I believe Ill go back to the old style bulbs.Four for $1.25.

 

[ProviaFan]

I like full spectrum 6,500K or even 10,000K Compact Fluorescent bulbs - they're great for lighting planted aquaria, and the 6,500K ones would also make great room lighting (if only I had the money to put those kind of fixtures in every room) [drool icon]
Besides that, they're very efficient and have a longer life on average than a regular fluorescent.

 

[tweakmm]

I've actualy been looking for some new lighting. I might check these out

 

[DigDug]

I think they are wonderful. It truly changes the "mood" of the room from a yucky yellow to a clear and calm "white". Colors look right.

 

[sharkeeper]

I use three Philips F32T8/TL950 for my computer area. 5,000K and amazing 98CRI. I have three lamps, rather than two, because this lamp is less efficient than CRI 80's and needs one more bulb to compensate for this.

That's the problem with polychromatic FL lamps. Triple and even Quadruple spectral peak distrubution gives very accurate colour rendition at a big price of low lumen output. Of course one can put four in a 2x4 fixture instead of two. Either way it's best to use a high quality driver at 30+ kHz to avoid flicker and stroboscopic motion distortion. Quality is better in any case. Certainly beats F40T12CW gloomy 4100K 63 CRI! :Q

If you really want a lot of lumens and don't care about colour rendering, try LPS. 200+ lumens/watt, 1775K with ~18CRI. Those are the yellow-orange lamps you see in tunnels to assist people's vision in adjusting when coming out of sunlight.

Cheers!

 

[NikPreviousAcct]

omfg... Jerboy, you're frigging obsessed with lightbulbs!!!! :Q

nik

 

[no0b]

screw it just go with some low bay Metal Halide lamps. It might cost 120 but the bulbs last praticly forever.

 

[amnesiac]

Originally posted by: no0b
screw it just go with some low bay Metal Halide lamps. It might cost 120 but the bulbs last praticly forever.

Wait, aren't those the ones they use to provide light to certain, er...crops?

 

[ISAslot]

I got some for my room, and at first they worked great, but now my room seems yellow again.

 

[Jerboy]

Originally posted by: jliechty
I like full spectrum 6,500K or even 10,000K Compact Fluorescent bulbs

6,500K doesn't necessarily mean full spectrum. It is called the correlated color temperature which indicates how "white" the light is. Higher it is, more blue hue. You can get 6,500K to 10,000K or even 20,000K by mixing red green and blue. It's fine for producing specific color of light, but not a full spectrum lighting. If you shine this light at something that only reflects light at wavelength not produced by any of three lamps, you'd get a dull color.

Full specrum light contains light through out the visible spectrum, the difference between GESPX50 and Chroma50. SPX 50 is plain 5,000K trichromatic lamp and is very efficient. Chroma50 is less efficient, but it is pretty close to full-spectrum.

- they're great for lighting planted aquaria, and the 6,500K ones would also make great room lighting (if only I had the money to put those kind of fixtures in every room) [drool icon]
Besides that, they're very efficient and have a longer life on average than a regular fluorescent.

TL950 is $15 a piece, but 850, which has CRI 85ish and 5,000K is quite cheap. It's a four foot lamp. You don't get full spectrum, but you get the crisp 5,000K white and it's $3 from Home Depot.

 

[ElFenix]

flourescent sucks anyway.

you worry far too much about light bulbs for a high school student.

 

[Jerboy]

Originally posted by: ElFenix
flourescent sucks anyway.

you worry far too much about light bulbs for a high school student.

Your point is?
Many of you people worry way too much about when the next LAN party is, the competitors in that party, gaming computer specs and how fast certain cars are. Lighting has a great effect on way we see things when we're not in the sun. Wait a sec though. Many geeks don't have a life beyond their CRT and doesn't know how to appreciate the sun. I appreciate the sun and when the sunlight is down, I'd like to have a lighting as close as possible to the sun at night.

Ordinary light bulbs blurs the appearance of people. A semi-ugly girl in the sun could fairy well look beautiful in the dawn of incandescent light, because it hides the unappleaing elements by fooling your eyes.


Proper lighting is more important than LAN party thing. How about you?

 

[Cyberian]

Originally posted by: aphexII
I noticed a BIG difference when we installed them in the kitchen (overhead lights) and then in my room. Not only do the lights look whiter, but it really makes the room look better and cleaner. Reveal are the only bulbs im buying from now on....

When my digital camera comes in today or friday, i'll take some pictures to show you the difference, its VERY noticible IMO.

Wrong!!

 

[blueghost75]

Originally posted by: Jerboy

Originally posted by: ElFenix
flourescent sucks anyway.

you worry far too much about light bulbs for a high school student.

Your point is?
Many of you people worry way too much about when the next LAN party is, the competitors in that party, gaming computer specs and how fast certain cars are. Lighting has a great effect on way we see things when we're not in the sun. Wait a sec though. Many geeks don't have a life beyond their CRT and doesn't know how to appreciate the sun. I appreciate the sun and when the sunlight is down, I'd like to have a lighting as close as possible to the sun at night.

Ordinary light bulbs blurs the appearance of people. A semi-ugly girl in the sun could fairy well look beautiful in the dawn of incandescent light, because it hides the unappleaing elements by fooling your eyes.


Proper lighting is more important than LAN party thing. How about you?

I have a GE Chroma 50 in my room, a fairly short one. I also have some incadescent lighting to go along with it, because it is just not bright enough by itself. I am going off to college in a month or so though, so I am going to look into some full spectrum light for the dorm room. Do they make those bulbs in a screw-in format? I would like to get some floor lamps (the ones that shine on the ceiling), and put some full spectrum bulbs in them. I think that should give me the best effect.

Our living room here at my house has 3 full spectrum blubs. I don't know what type, but when you turn just those on, and turn all the other lights off, it puts out just awesome light. It is really cool for watching movies and such.

Oh, and I talked my parents into buying those for the living room about a year ago. and guess what. I was in high school, so HA!!