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Reflective optical system for collimator tube

A reflective optics and collimator technology, applied in the field of optical systems, can solve the problems of incomplete camera detection and difficult processing, and achieve the effect of compact structure, low processing difficulty and good performance

Inactive Publication Date: 2010-06-23
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

The usual large-aperture long-focal-length collimator adopts a coaxial optical system, and there is a central obscuration in the system, which makes the detection of a camera with a central obscuration smaller than the central obscuration of the collimator not comprehensive. The length of the mirror system is long, and the two mirrors, namely the primary mirror and the secondary mirror, are both aspherical mirrors, especially the main mirror is an off-axis aspheric mirror, which is difficult to process

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  • Reflective optical system for collimator tube
  • Reflective optical system for collimator tube

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Embodiment Construction

[0014] see figure 1 , there are four reflectors in the reflective optical system for the collimator used in the present invention, wherein the main reflector 1 is a concave ellipsoidal reflector, the second reflector 2 is a convex spherical reflector, and the third reflector 3 is a concave spherical reflector, and the fourth reflector 4 is a plane reflector. The second two reflection mirrors 2 are arranged on the reflection light path of the main reflection mirror 1; the third reflection mirror 3 is arranged on the reflection light path of the second reflection mirror 2; the fourth reflection mirror 4 is arranged on the reflection light path of the third reflection mirror 3 .

[0015] The horizontal length of the whole system is within 8 meters, and the vertical length is within 2 meters. And the system can meet the use requirements in a large field of view of 0.1°×0.1°. If the focal length is longer than 10 meters, the aperture of the system is greater than 500 mm, and a c...

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Abstract

The invention relates to a reflective optical system for a collimator tube, which comprises a primary reflecting mirror, a second reflecting mirror, a third reflecting mirror and a fourth reflecting mirror. The second reflecting mirror is arranged on the reflected light path of the first reflecting mirror; the third reflecting mirror is arranged on the reflected light path of the second reflecting mirror; and the fourth reflecting mirror is arranged on the reflected light path of the third reflecting mirror. The invention provides the light paths which can shorten the system and the collimator tube with the long focal length but no shielding, and the difficulty in processing each reflecting mirror of the collimator tube is low.

Description

technical field [0001] The invention relates to the field of optical systems, in particular to a reflective optical system for an unobstructed collimator. Background technique [0002] The collimator is an important tool for installing and adjusting optical instruments, and it is also an important part of optical measuring instruments. With different reticles, together with micrometer eyepieces or microscope systems, the focal length of high-resolution cameras can be measured , Identification rate and other imaging quality technical indicators. Equipped with sun simulation light source, monochromator, moving target generator and other equipment, it can be used in the detection of visible light camera imaging quality, measurement of optical system characteristics and characteristic calibration of detection and receiving devices. [0003] The reflective collimator covers a wide spectral range, from ultraviolet to infrared, and the light aperture is easy to make relatively lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B17/06G02B5/08
Inventor 樊学武李英才马臻李创王炜邹刚毅
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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