Combining 650nm and 532nm

[hydrogenman15]

Every DVD burner (reader also?) contains a perfectly usable RED+IR dichro. They are used to bent the light from the pickup plane to the disc.

At a 45° angle, they reflect about 100% RED and IR light. My tests show that it transmits less from my 200mW laser than a dead laser diode emits. (still harmful to look at directly!) I got two such dichros an one maybe transmits 20-50% green and the other transmits 50-80% green (guessed)

A picture of the inside of an LG GSA-H55L 20x burner pickup.

sorry for my bad english. foto=photo (typo) (

So why would it not work to just turn the laser diode on while it's still in the sled? :

--hydro15