- Optical data processing--Congresses (4)
- Optical trade--United States--Congresses (2)
- Aerial reconnaissance--Congresses (1)
- Aerial reconnaissance--Equipment and supplies--Congresses (1)
- Image processing--Congresses (1)
- Imaging systems in medicine--Congresses (1)
- Infrared detectors--Congresses (1)
- Infrared technology--Congresses (1)
- Laser spectroscopy--Congresses (1)
- Lasers--Congresses (1)
- Law enforcement--Optical equipment--Congresses (1)
- Microscopy--Congresses (1)
- Optical radar--Congresses (1)
- Photography, High-speed--Congresses (1)
- Polarimetry--Congresses (1)
- Polariscope--Congresses (1)
- Radar--Optical equipment--Congresses (1)
- (1)