Infrared Reflective Collimator
A collimator is a commonly used optical testing instrument. Limited by optical materials, it is difficult for refractive optical systems to achieve a large aperture and lightweight design; reflective systems are less limited by materials, are easy to make lightweight, have no chromatic aberration at all, and the images formed by light of various wavelengths are strictly consistent and completely coincident, and can work over a wide wavelength range from ultraviolet to infrared, transmit a large amount of energy, and have high system transmittance. Moreover, the optical path can be folded to reduce the size of the system, so reflective systems are generally adopted. Among the two options of spherical mirrors and aspherical mirrors, the parabolic mirror is the most commonly used mirror. A coaxial optical system is adopted, with the primary mirror being a paraboloid, plus a single plane mirror, folding the optical path by 90 degrees, focusing to the focal point. System optical path diagram. At the focal point of the paraboloid, various reticles, a Gaussian eyepiece, an autocollimation illumination system or a blackbody radiation source are placed, and together with the primary and secondary mirrors form a coaxial reflective collimator. See the outline drawing below: Outline drawing
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Overview
Specifications
| Parameter | Value |
|---|---|
| Focal Length | 1021.5 mm +/- 1 % |
| Aperture | 250 mm+/-10 mm |
| Image Quality | PV value <=λ/8 (λ=632.8 nm) |
Key Features
Datasheet
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