Device for measuring focal length and wavefront distortion of lens

A wavefront distortion and measuring device technology, applied in the optical field, can solve the problems of lack of coverage, large lens focal length measurement error, unclear imaging, etc., and achieve the effect of saving labor and cost, improving the degree of automation, and widening the measurement range

Inactive Publication Date: 2012-07-11
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

The disadvantage is that when measuring the lens, the spherical aberration of the lens will cause the image to be unclear, which will affect the image interpretation, resulting in a large error in the measurement of the focal length of the lens. In addition, due to the limitation of the focal length of the flat light tube, the measurement range of the focal length of the lens cannot cover the focal length of the lens of Shenguang three hosts. range of needs
Lens wavefront distortion is measured with an interferometer. The disadvantage is that...

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  • Device for measuring focal length and wavefront distortion of lens
  • Device for measuring focal length and wavefront distortion of lens

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Embodiment Construction

[0015] see figure 1 , the present invention provides a lens focal length and wavefront distortion measurement device, the device includes a laser 1, a semi-transparent mirror 2, a plane mirror 3 and a focal length and wavefront distortion control unit; the semi-transparent mirror 2 and the plane Reflecting mirrors 3 are sequentially arranged on the outgoing light path of the laser.

[0016] The focal length and wavefront distortion control unit includes a control and acquisition computer 9, a goniometer 4, and a focal length and wavefront distortion measurement unit; the control and acquisition computer 9 is connected to the goniometer 4; the control and acquisition computer 9 controls the goniometer 4 to drive The plane mirror 3 rotates and records the angle value of the plane mirror 3 rotation; the focal length and wavefront distortion measurement unit is connected with the control and acquisition computer 9 .

[0017] The focal length and wavefront distortion measurement u...

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Abstract

The invention relates to a device for measuring the focal length and wavefront distortion of a lens. The device for measuring the focal length and wavefront distortion of the lens comprises a laser, a semi-permeable semi-reflection flat mirror, a plane mirror and a focal length and wavefront distortion control unit. The semi-permeable semi-reflection flat mirror and the plane mirror are sequentially arranged on an emergence optical path of a laser; and the focal length and wavefront distortion control unit is arranged on a reflection optical path which is reflected onto the semi-permeable semi-reflection flat mirror by the plane mirror and then is reflected along the semi-permeable semi-reflection flat mirror. The invention provides the device for measuring the focal length and wavefront distortion of the lens, which has large measurement range, high stability, good repeatability and high confidence degree of a measurement result.

Description

technical field [0001] The invention belongs to the field of optics, and relates to a lens focal length and wavefront distortion measurement device, in particular to an automatic measurement device for laser collimating and focusing lens focal length and wavefront distortion parameters. Background technique [0002] In the large-scale scientific engineering research of Shenguang three host devices, a large number of lenses with different aperture sizes and focal lengths are required for the collimation and focusing of strong lasers and the sampling and diagnosis of their parameters, and the focal length of the lens and the transmission wavefront distortion are directly related. It affects the transmission quality and performance of the laser, so that the required indicators cannot be reached. In order to achieve good transmission quality of the laser, the focal length and wavefront of the transmission lens must be strictly controlled, so the precise measurement of the focal ...

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Application Information

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IPC IPC(8): G01M11/02G01J9/00
Inventor 赵建科段亚轩陈永全张杰
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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