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Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please
i dig it up for you,i remembered the thread title from back of the days that came here and was reading everything :beer:
post: https://laserpointerforums.com/f65/a140s-inside-m140s-89550.html#post1302393
Has 1 red and 1 blue PT121 LED. They are really nice.
Knife edge mirrors are glued to the main optics housing unlike the M and A series which had the small removable knife edge array. If you are after for just the bare mirrors they can be extracted individually but there is a testing thread over on PL that shows they are a little lower efficiency so the advantage to the knife edge arrays are the preconfigured mounting and if you are having to mount and glue them anyway might as well just pick up some good bounce mirrors.
For diodes it has mostly A-Type M140 I have a picture of the block showing the quantity and their placement. I posted it here in some somewhere. I think it was either 32 A's and 8 M M's or it is 28 A's and 12 m's. M's grouped in the center.
Interesting insight I was given about the actual reasons for all the different mixes other changes/tweaking they have done as time went on.
It has a lot of compromising in the A and M units due to using one monochromatic source that is responsible for producing two of the main color sources. Got to factor the conversion rate efficiency off the phopher to get the lumen output needed which based on the wavelength and total power and the wavelength that is directly passed for the blue to get the best color balance
From what I was told the optimal for conversion off the phopher for green is around 442nm.
They always had issues finding the right trade off to get the lumen numbers and a directly passed blue for color balance with available diodes and the design confinements of the A and M units. The blue pass was always the weak link which produced poor reviews for the color balance.
Poor reviews of the A130's dismal color balance might have been the nail in the coffin for the whole slim eco laser projector if they were not so invested and the fact they were marketed more for business uses not watching movies.
The H-series have advantage that the pump source for generating the green does not have to pass making the blue source. So the laser blocks only concern is to making the green. The unit was large enough to have a dedicated blue light source which had a much better wavelength.
i dig it up for you,i remembered the thread title from back of the days that came here and was reading everything :beer:
post: https://laserpointerforums.com/f65/a140s-inside-m140s-89550.html#post1302393