Additional Companies
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Glossary
- collimator An optical instrument consisting of a well- corrected objective lens or mirror with a light source and or object/image (i.e. illuminated slit or retical) at its focal plane. Collimators are used to calibrate and align optical devices and...
- lens testing equipment Devices such as spherometers, lensometers, lens benches, knife-edge devices, interferometers and MTF equipment for testing the single elements of a lens and the completed lens assembly.
- reflective coating Thin-film coating, single or multilayer, that is applied to a substrate to increase its reflectance over a specified range of wavelengths. Metal film, transparent or opaque, is the oldest form of reflective coating.
- focal length (f) The effective focal length (EFL) is the distance from the principal point to the focal point. The back focal length (BFL) is the distance from the vertex of the last lens to the second focal point. The front focal length (FFL) is the distance from...
infrared collimatoroptical instrumentilluminated slit reticlefocal planelens testingfocal lengths metrological applicationsblackbodyenergy collimatorsinfraredIRenvironmental testingthermal imagerslens testingreflectivefocal lengthopticstest & measurement