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Diffuse or direct bulb light for an area.
http://img.alibaba.com/img/pb/891/178/257/ws_transfer_pic_7849270_1.jpg
Say that you had a 5W led and you wanted to light a small room, would it be better to use a bulb with a clear / no dome or one with a diffuse / frosted dome?
Would there be a big difference between the two?
Discussions
5 years ago
Problem with an LED is the light comes out in a fairly narrow beam. Which is why LED light bulbs use multiple LEDs to offer light across all angles. Best you can do with a single LED is to use a reflestor to help spread the lgiht around.
Reply 5 years ago
Something like this?
Reply 5 years ago
Yes. Or try something a little different. Instead of the LED sitting inside the cone like you see on flash lights. Maybe shinning down on top of a reflective cone with similar design on the outside of the cone. So that the light is dispersed outward rather than focused like the cones tend to do. Then wrap a diffusing layer around the whole setup.
Reply 5 years ago
Is this theoretical or has it been done before?
I was looking at the specs of some of the led's and they have viewing angles of 120-135 degrees. Would the angle have an effect on the reflector that should be used?
Reply 5 years ago
The wider the viewing angle the better it spreads light over an area. The reflector will help to concentrate the light. With that wide of viewing angle the a difusing lens should be all you need.
Reply 5 years ago
Like this?
or this?
Reply 5 years ago
The first may focus the light. The second would be a good option. You'll just have to play around with some options and go with what works best for you.
Reply 5 years ago
Thank you, I appreciate your advice.