Hello all,
I will soon be purchasing materials to assemble and prototype a full color DPSS projector unit. The projector will contain three lab grade OEM analog modules, 473nm, 532nm and 635nm.
I have heard on one forum that the ratio for the above wavelengths is 2:1:4. So, 300mW blue, 150mW green, 600mW red. I was told that with those specific wavelengths using that ratio I should be able to get a very nice white balanced beam. For 650nm modules the ratio changed to 2:1:6. For 671nm modules it was 2:1:8.
I was wondering if this was fairly accurate. I did not want to design a projector which is heavy in one color as this will reduce the number of colors the projector is capable of producing. Ideally I'd like to get 16.8 million colors.
As I understand it, analog modulated modules operate between 0v and 5v. To achieve 16.8 million colors - I would have to start out with a perfect white balance and each module would have to have 255 voltage levels between 0v and 5v.
At this point, I am not sure if it is even possible. I do not know what the voltage increments are for analog modulation or if the ratio mentioned above is correct.
I figured I would ask the experts.
I have been searching the internet and a couple of forums, thought I'd ask here. I attempted to search on this forum but came up empty handed.
Thanks in advance,
Phil Godfrey
St. Louis, MO
I will soon be purchasing materials to assemble and prototype a full color DPSS projector unit. The projector will contain three lab grade OEM analog modules, 473nm, 532nm and 635nm.
I have heard on one forum that the ratio for the above wavelengths is 2:1:4. So, 300mW blue, 150mW green, 600mW red. I was told that with those specific wavelengths using that ratio I should be able to get a very nice white balanced beam. For 650nm modules the ratio changed to 2:1:6. For 671nm modules it was 2:1:8.
I was wondering if this was fairly accurate. I did not want to design a projector which is heavy in one color as this will reduce the number of colors the projector is capable of producing. Ideally I'd like to get 16.8 million colors.
As I understand it, analog modulated modules operate between 0v and 5v. To achieve 16.8 million colors - I would have to start out with a perfect white balance and each module would have to have 255 voltage levels between 0v and 5v.
At this point, I am not sure if it is even possible. I do not know what the voltage increments are for analog modulation or if the ratio mentioned above is correct.
I figured I would ask the experts.
I have been searching the internet and a couple of forums, thought I'd ask here. I attempted to search on this forum but came up empty handed.
Thanks in advance,
Phil Godfrey
St. Louis, MO