Preparation of the optical auto laser detector system 29344
Preparation of the optical detector. The AF60/2.8Dmicro Nikkor lens is used as optical focus for the photodiode. The reflected IR lasersignals are focused to a small point at 46.5mm distance (same as a normal Nikon camera sensor position). There the photodiode detector is located. The necessary extension ring is homemade and put into a frame to rotate into the correct direction. The holes for the F-mount have yet to be drilled (M1.6mm) then the thread is created. A lot of fine mechanics. The photodiode is located on a small PCB and an AVR ATtiny45 ucontroller calculate the light values for normal light and laser light and gives the results to the CPLD hardware module. This signal is the basic for the auto detection and trigger system.