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Collimators are optical systems used to imitate standard targets placed in "optical infinity" (very long distance). The collimators according to type of optical elements used in design of the collimator are divided into two groups: reflective collimators and refractive collimators. Reflective collimators due to their wide spectral range are almost exclusively used in systems for testing thermal imagers and often also in systems for testing TV cameras. Refractive collimators are used in systems for testing TV cameras. Inframet manufactures both types of collimators as components of its test systems. However, our company specializes in reflective off-axis collimators. The latter ones are collimators built using two mirror configuration: primary off axis collimating mirror and secondary flat mirror. In spite of this simple optical structure manufacturing high quality off axis reflective collimators is a challenge, particularly in case of collimators of big optical apertures.
Fig. 1. Photo of a series of CDT
collimators: CDT 2500, CDT 1500, CDT 1000
Attention: Inframet can deliver collimators for a vertical configuration test
systems (blackbody, wheel and targets are on the collimator) as well as for a
horizontal configuration test systems (blackbody, wheel and targets are at
the same horizontal level as the collimator). Inframet can deliver off axis collimators of output apertures
as high as 500 mm. Typical spectral range is 0.6 -15 micrometer but can be
extended to 0.3 -15 micrometer. Detail technical parameters of our off axis reflective
collimators can be found in data sheets: ●Company trusted by customers in over 30 countries all over the world ●
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