Canon USA has developed laser rotary encoders that can provide 81,000 pulses with a 36-mm diameter by using the light-diffraction interference method in conjunction with a semiconductor laser acting as the light-emitting element.
R-1SO Laser Rotary Encoder
The R-1SO laser rotary encoder is compact and lightweight, provides 81,000 pulses per revolution (without interpolator), has a maximum frequency response of 500 KHz, and an open collector output.
R-1SL Laser Rotary Encoder
The R-1SL laser rotary encoder is compact and lightweight, provides 81,000 pulses per revolution (without interpolator), has a maximum frequency response of 500 KHz, and a balanced line driver output.
R-1P32 Laser Rotary Encoder
Equipped with a built in interpolator unit, the R-1P32 laser rotary encoder can generate 2,259,200 edge count / rotation (0.5 arc-sec) Best for position control machine design with very high angle control resolution.
M-1S Laser Rotary Encoder
The M-1S laser rotary encoder is a heavy duty encoder, making it ideal for factory environments. It has a maximum frequency response of 2 MHz and a balanced line driver output circuit for long distance signal transmission.
KP-1Z Laser Rotary Encoder
The KP-1Z is a module type laser rotary encoder that provides 81 since wave per revolution. It features original Canon interference optics and low influence from disk eccentricity.