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A method for assembling a wide-angle optical free-form surface lens

A wide-angle optical and free technology, applied in the field of optical display, can solve the problems of high cost and difficult processing, and achieve the effects of reduced processing difficulty, cost saving, and high assembly accuracy

Active Publication Date: 2021-07-09
深圳市锐思华创技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, it is very difficult to process this kind of large-area free-form surface lens, which requires more than 5 axes of machining, which makes the cost very high

Method used

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  • A method for assembling a wide-angle optical free-form surface lens
  • A method for assembling a wide-angle optical free-form surface lens
  • A method for assembling a wide-angle optical free-form surface lens

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Embodiment

[0036] A method for assembling a wide-angle optical free-form surface lens. In this embodiment, the wide-angle optical free-form surface lens is divided into four free-form surface sub-lenses for assembly. The assembly method specifically includes the following steps:

[0037] The first step is to process the free-form surface reflective mirror. First, determine the design parameters of the large-area free-form reflective mirror that meet the requirements, and then divide the free-form reflective mirror into four arrays according to the design parameters of the large-area free-form reflective mirror. Determine the design parameters respectively, and then process the free-form surface reflective sub-lenses 100a, 100b, 100c, and 100d respectively according to the design parameters of the free-form surface reflective sub-lenses;

[0038] The second step is to construct the imaging optical structure, such as figure 1, the imaging optical structure is a head-up display optical stru...

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PUM

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Abstract

The invention provides a method for assembling wide-angle optical free-form surface lenses. The assembling method includes the following steps: the first step, processing the free-form surface reflective sub-lens; the second step, constructing the imaging optical structure; the third step, installing the free-form reflective sub-lens; the fourth step, installing the camera lens structure and image analysis Software; the 5th step, analyze and calculate the MTF value of the fringe of the specific frequency of the ROI corresponding to the free-form surface reflective sub-mirror in parallel by the image analysis software, and carry out 6-dimensional position adjustment to the free-form surface reflective sub-mirror; the 6th step, multiple Two free-form surface reflective sub-lenses are spliced ​​and fixed into a whole lens. The wide-angle optical free-form surface lens is assembled from multiple sub-lenses, which greatly reduces the difficulty of lens processing and saves costs, and is suitable for augmented reality head-up display optical systems.

Description

technical field [0001] The invention relates to an optical display technology, in particular to an assembling method of a wide-angle optical free-form surface lens which adopts assembling technology, is easy to process, and has low cost. Background technique [0002] The existing optical system for the augmented reality head-up display of automobiles mainly uses multiple large-area free-form surface reflective lenses to realize the head-up display with a large field of view, so that the driver can see without looking down or turning his head. The optical system of this type of head-up display mainly includes imaging devices, directional scattering sheets, multiple off-axis free-form surface mirrors, automobile windshields, and human eye observation windows. The head-up display with a large field of view requires a relatively large size of the off-axis free-form reflector. For example, to achieve a field of view of more than 20 degrees, two off-axis free-form reflectors are u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/00G02B27/01G02B5/10
CPCG02B5/10G02B27/0012G02B27/0101
Inventor 不公告发明人
Owner 深圳市锐思华创技术有限公司