Large-aperture catadioptric lens suitable for triangulation
A triangulation and large-aperture technology, applied in measuring devices, optical devices, optics, etc., can solve the problem of insufficient light entering the combination of prisms and objective lenses, and achieve the effect of reducing volume and weight
Active Publication Date: 2020-08-11
北京国泰蓝盾科技有限公司
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a large-aperture catadioptric lens suitable for triangulation in view of the above-mentioned defects in the prior art, which solves the problem of combining a receiving prism and an objective lens in a dynamic volume measurement device based on PSD and triangulation. Insufficient amount of light, while reducing the size and weight of the objective lens as much as possible
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[0021] In order to make the content of the present invention clearer and easier to understand, the content of the present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.
[0022] figure 1 A schematic structural view of a large-aperture catadioptric lens suitable for triangulation according to a preferred embodiment of the present invention is schematically shown.
[0023] like figure 1 As shown, the large-aperture catadioptric lens suitable for triangulation according to the preferred embodiment of the present invention includes: the first square aspherical lens 1, the second square spherical mirror 2, the third circular spherical lens 3, the first Four circular spherical lenses 4, the fifth circular spherical lens 5 and the sixth lens 6; wherein, on the optical path, the first square aspheric lens 1 is arranged in front of the second square spherical mirror 2, It is reflected by the second square spherical mirr...
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The invention provides a large-aperture catadioptric lens suitable for triangulation. The large-aperture catadioptric lens comprises a first square aspheric lens, a second square spherical reflector,a third circular spherical lens, a fourth circular spherical lens, a fifth circular spherical lens and a sixth lens, wherein on the light path, the first square aspheric lens is arranged in front of the second square spherical reflector, so the light passes through the first square aspheric lens and is reflected by the second square spherical reflector, the third circular spherical lens, the fourth circular spherical lens, the fifth circular spherical lens and the sixth lens are sequentially arranged, so the light reflected by the second square spherical reflector sequentially passes through the third circular spherical lens, the fourth circular spherical lens, the fifth circular spherical lens and the sixth lens.
Description
technical field [0001] The invention relates to the field of dynamic volume measurement, in particular to a large-aperture reflex lens suitable for triangulation. Background technique [0002] In the dynamic volume measurement equipment based on PSD (Position Sensitive Deteetor) and triangulation method, the emitted laser hits the surface of the measured object through the emitting prism, and the diffuse emitted light on the surface of the measured object passes through the receiving prism and then through the receiving prism Reflected, and then converged to the PSD surface by the receiving objective lens. Since PSD has certain dark current noise, PSD drive circuit and signal acquisition circuit also inevitably have certain noise. The measurement accuracy of the entire device is affected and restricted by the effective signal-to-noise ratio of the system, so it is necessary to improve the effective signal as much as possible. Strength of. [0003] Increasing the light inpu...
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IPC IPC(8): G02B17/08G01B11/00
CPCG02B17/08G01B11/00
Inventor 王皓
Owner 北京国泰蓝盾科技有限公司