Object carriage system
On-axis air gage focus system
Optical apparatus with improved lens mounting device
Optical data pattern generation device comprising phosphor membe
Optical device for generating pattern having uniform light inten
Optical element and photoreceptor registration system for a rast
Optical image writing unit having improved driving mechanism
Optical imaging head
Optical information recording apparatus
Optical pickup device which generates a focusing correction sign
Optical print head with removable mounting
Optical printer
Optical printer
Optical printer
Optical printer head
Optical printer head and printer using same
Optical printing device
Optical recorder having focus controlling means
Optical recorder with plural resolution recording
Optical recording apparatus