Eidetical
Active member
- Joined
- May 14, 2022
- Messages
- 201
- Points
- 43
I'm organizing a display case to add items I've built over the years and dug this one out. It's an RGB picoprojector made by my former employer 8 years ago. I did all the assembly and alignment of the system except for the green DPSS laser shown in the box without its cover. They called me "The human Finetech", after the sub-micron assembly tool maker.
The green laser has crossed rod lenses in front of it and the red and blue lasers have one each. Then there's a collimating lens and structured diffuser in each path before the dichroics. The RGB beam reflects off an LCoS display (for despeckling) into an assembly holding a polarizing cube beamsplitter and projection lens. The imaging LCoS display is not shown. The whole thing was only 5mm thick. It's glued to an aluminum block and base for easy handling. Never went into production.
![CP Picoprojector.jpg CP Picoprojector.jpg](https://laserpointerforums.com/data/attachments/59/59008-34a943b1ea11f63f4bd1b60370ccc5cf.jpg?hash=NKlDseoR9j)
The green laser has crossed rod lenses in front of it and the red and blue lasers have one each. Then there's a collimating lens and structured diffuser in each path before the dichroics. The RGB beam reflects off an LCoS display (for despeckling) into an assembly holding a polarizing cube beamsplitter and projection lens. The imaging LCoS display is not shown. The whole thing was only 5mm thick. It's glued to an aluminum block and base for easy handling. Never went into production.
![CP Picoprojector.jpg CP Picoprojector.jpg](https://laserpointerforums.com/data/attachments/59/59008-34a943b1ea11f63f4bd1b60370ccc5cf.jpg?hash=NKlDseoR9j)