my 3M 9100 projector. I used to use the 10" hitachi panel with this one. All the picture I posted previously were using this 3M 9100 with the 10" picture. Now I replaced the 10" panel with a 12" 800x600 one to raise the brightness. the lamp I used with this one is 24v 75w halogen lamp.
Attachments
The picture shows how I adjust the RGB or color temp. My lcd controller has no RGB adjustment or color temp adjustment. However, I found another way to adjust the color temp:
I stained the round surface of the condenser lens with blue and green markers, because I think the halogen light color lacks blue and green color (mostly green). To raise the color temp only need to add some blue. Because I think the green color is so important for most of the pictures, I added more green than blue stain to the round surface of the condenser. I tried to add the stains to the plane surface of the condenser, but the high temperature will bleach the stains very fast.
There is good things of adjusting RGB by adding stains to the condenser: the stains absorb most of the red light and infrared light from the halogen bulb, and the light absorbed used to be absorbed by the color filters of the LCD panel. By staining the condenser lense, the excessive red and infrared lights were blocked so will not reach the LCD panel. I felt significant raise in condenser temperature, and this means the stains blocked a lot of heat from damage the LCD panel.
I hope you do not laugh at my discovery, because to tweak the condenser works very well for my proyector.
I stained the round surface of the condenser lens with blue and green markers, because I think the halogen light color lacks blue and green color (mostly green). To raise the color temp only need to add some blue. Because I think the green color is so important for most of the pictures, I added more green than blue stain to the round surface of the condenser. I tried to add the stains to the plane surface of the condenser, but the high temperature will bleach the stains very fast.
There is good things of adjusting RGB by adding stains to the condenser: the stains absorb most of the red light and infrared light from the halogen bulb, and the light absorbed used to be absorbed by the color filters of the LCD panel. By staining the condenser lense, the excessive red and infrared lights were blocked so will not reach the LCD panel. I felt significant raise in condenser temperature, and this means the stains blocked a lot of heat from damage the LCD panel.
I hope you do not laugh at my discovery, because to tweak the condenser works very well for my proyector.
Attachments
hi desperadok
i really like what you've done there 😎 !
i am not building the same type of diy projector as you (i am trying to convert a commercial projector to led lamp), but i think you've got a great result all the same
i think you should be able to make that stain more permanent with some kind of transparent spray paint, or maybe tinted filters or something
keep up the good work !
matt
🙂
i really like what you've done there 😎 !
i am not building the same type of diy projector as you (i am trying to convert a commercial projector to led lamp), but i think you've got a great result all the same
i think you should be able to make that stain more permanent with some kind of transparent spray paint, or maybe tinted filters or something
keep up the good work !
matt
🙂
Thank you for your input to my post, matt. I think your idea of transparent spray paint, or tinted filters is excellent. I am looking for a filter containing additive which absorbs the red and infrared light only, and this filter both adjusts the RGB and blocks the heat produced by the halogen lamp.
I think LED is a good idea, but not the white led because of its poor color. I tested the R,G,B LED as the light source, and the color was excellent. If projected to less than 60 inch, the result was not bad. I read your posts about your plan of converting the 3xLCD projector to use LED source. I think it is much better for you to use the R,G,B leds instead of using the white LEDs with color filters. The white LED light contains too much blue and insufficient red light. For my observation, the Green and Red lights are the most important for most of the video pictures. Most pictures do not need very much blue light. So the white led gives not good color.
I hope to see the development of your converting. Also, I am very impressed by the pictures you drew, and very interested in how you drew the pictures. Would you please inform me how did you do that? I appreciate your favor very much.
Li
I think LED is a good idea, but not the white led because of its poor color. I tested the R,G,B LED as the light source, and the color was excellent. If projected to less than 60 inch, the result was not bad. I read your posts about your plan of converting the 3xLCD projector to use LED source. I think it is much better for you to use the R,G,B leds instead of using the white LEDs with color filters. The white LED light contains too much blue and insufficient red light. For my observation, the Green and Red lights are the most important for most of the video pictures. Most pictures do not need very much blue light. So the white led gives not good color.
I hope to see the development of your converting. Also, I am very impressed by the pictures you drew, and very interested in how you drew the pictures. Would you please inform me how did you do that? I appreciate your favor very much.
Li
sure thing Li
thanks for your kind words by the way !
i use corel photopaint 12 at the moment, mainly on my pc with a graphics tablet (tablet/pen makes a huge difference when compared to mouse, you just can't beat a tablet), i 'borrowed' images of the leds from the luxeon website, and used them as a basis for the pictures, the heatsinks were drawn in photopaint, using a mask i drew in the shape with the fins and all that, one face at a time, then airbrushed in the colours, great fun doing this stuff on a computer (used to have such a nightmare trying to use real airbrushes - always clogging and spitting, and all that cleaning !)
only problem is getting carried away, and getting loads done without saving, and then having a crash 😡 but it usually works out right
as for the leds, my early experiments back up what you say, i've tried some 'white' leds just to see their spectrum (still havent managed to fool the circuit yet) and they're seriously blue biased, so it may be hacksaw time after all !
wishing you success with yours too
matt
🙂
thanks for your kind words by the way !
i use corel photopaint 12 at the moment, mainly on my pc with a graphics tablet (tablet/pen makes a huge difference when compared to mouse, you just can't beat a tablet), i 'borrowed' images of the leds from the luxeon website, and used them as a basis for the pictures, the heatsinks were drawn in photopaint, using a mask i drew in the shape with the fins and all that, one face at a time, then airbrushed in the colours, great fun doing this stuff on a computer (used to have such a nightmare trying to use real airbrushes - always clogging and spitting, and all that cleaning !)
only problem is getting carried away, and getting loads done without saving, and then having a crash 😡 but it usually works out right
as for the leds, my early experiments back up what you say, i've tried some 'white' leds just to see their spectrum (still havent managed to fool the circuit yet) and they're seriously blue biased, so it may be hacksaw time after all !
wishing you success with yours too
matt
🙂
Photonic Lattice LED's
Hi,
Has anyone investigated the projector light source LED's being
made by luminus.com.?
davidcw
Hi,
Has anyone investigated the projector light source LED's being
made by luminus.com.?
davidcw
hi davidcw
yeah they're really interesting aren't they ?...but i smell high prices...
luminus
luminus products
good info 🙂
matt
yeah they're really interesting aren't they ?...but i smell high prices...
luminus
luminus products
good info 🙂
matt
- Status
- Not open for further replies.