- Contrinex AG
- Manufacturer of inductive and photo-electric proximity switches. - Electro-Optical Systems
- Manufacturer of infrared detectors, photodiodes, quadrant detectors, receiver modules, and position sensors for the UV/vis to infrared spectrum. - Elesta optosensorics
- Offers standard sensors, customer adapted sensors, and more. - International Light Inc
- Light Measurement Instruments: light meters, radiometers, photometers, spectroradiometers, UV detectors. - Kolmar Technologies
- Manufactures infrared detectors and amplifiers for laboratory and industrial instruments. - Molectron Detector, Inc.
- Laser power and energy meters incorporating patented pyroelectric and thermopile sensor technology. - OmniVision Technologies (1)
- Opto Technology
- Light sensing and emmiting electronics. - Panavision SVI, LLC
- Makers of ACS CMOS image sensors and camera modules in both line scan and multi-megapixel 2D arrays. - Pantron Automation
- Photoelectric sensors and controls designed for automation in harsh environments. - Peripheral Imaging Corporation
- Designer and manufacturer of contact image sensor modules and CMOS image sensor ICs. - Photobit Corporation
- Designers of CMOS active pixel sensor (APS) electronic image capture technologies. - Sensoptic SA
- Manufactures optical sensors for dimensional measurements. - Sick Optic-Electronic, Inc.
- Photoelectric sensors, industrial sensors, safety controls, and environmental monitors. - Sofradir
- Infrared detectors and sensors for military, space, and commercial applications. - Solartech, Inc.
- Features hand-held digital ultraviolet meters. - Tri-Tronics Co Inc.
- Manufacturer of photoelectric sensors, fibre-optics and controls. - Wavelength Electronics
- Manufacturer of laser diode drivers and thermoelectric control products
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