Improving the Efficiency of Light Bulbs: Possible Solutions?

[robotpie3000]

I just finished an experiment on blackbody radiation, and one of the post lab questions asked me on the possible ways in which a light bulb can be made more efficient such that the majority of the light it produces falls in the visible spectrum.

After some quick research I think one of the ways is to replace the filament with a semiconductor material so that the lightbulb essentially becomes an LED, but I'm not sure if that fully answers the question. I appreciate any help!

 

[phinds]

If you do that, what you have is just an LED bulb, which you can already buy, so that isn't a NEW way to do it but it certainly IS a way to do it.

 

[Doug Huffman]

What does an Edison incandescent filament lightbulb emit other than visible light that might be converted to visible light?

 

[NTW]

In an incandescent light bulb, there is a lot of energy emitted in infrared wavelengths. There is an easy way to increase the visible-light component, but at a cost...

 

[robotpie3000]

Is it to choose a filament whose metal has a very high melting point and/or simply make the lightbulb dimmer?

 

[Sorade]

Hi all,

I'm joining this thread as I have a question related to the topic of IR/visible light radiation from light bulbs. I've built a multitouch display using infrared light, and I found that the ambient light from my ceiling light bulb is interfering with my device. I was wondering if changing my light bulb (a halogen) to an LED energy saving light bulb would reduce the amount of IR emitted ?

Thanks

 

[BvU]

Hi all,

I'm joining this thread as I have a question related to the topic of IR/visible light radiation from light bulbs. I've built a multitouch display using infrared light, and I found that the ambient light from my ceiling light bulb is interfering with my device. I was wondering if changing my light bulb (a halogen) to an LED energy saving light bulb would reduce the amount of IR emitted ?

Thanks

Better to post a new thread. ANd to do some googleing beforehand. Plenty of answers around ! e.g. here

 

[Sorade]

Thank you. Apologies for messing up with the thread.