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Optical imaging module with short distance and high lens birefringence tolerance

An optical imaging and module technology, applied in the optical field, can solve the problems of poor tolerance of lens birefringence and so on

Inactive Publication Date: 2020-10-13
江西微瑞光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The study found that the design of the lens group has the problem of poor tolerance to birefringence in the lens

Method used

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  • Optical imaging module with short distance and high lens birefringence tolerance
  • Optical imaging module with short distance and high lens birefringence tolerance
  • Optical imaging module with short distance and high lens birefringence tolerance

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Embodiment Construction

[0039] In the following, only some exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive.

[0040] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orie...

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Abstract

The invention provides an optical imaging module. The optical imaging module comprises a first lens close to the object side of the optical imaging module, a second lens arranged on the image side ofthe optical imaging module, a semi-transmitting and semi-reflecting layer arranged on one side, far away from the object side of the optical imaging module, of the first lens, a second phase retardation sheet arranged at the image side of the second lens, and a reflective polarizing plate arranged on a side of the second phase retardation sheet opposite to the second lens. According to the preferred embodiment of the invention, the birefringence phenomenon of the relatively pure incident polarized light beam after passing through the lens for many times is effectively reduced or avoided, so that the polarized light beam is depolarized, the loss and stray light of the system are increased, and the imaging quality is influenced.

Description

technical field [0001] The present invention generally relates to the field of optics, and in particular to an optical imaging module with short distance and high lens birefringence tolerance. Background technique [0002] Virtual Reality is virtual reality, referred to as VR. Its specific connotation is to comprehensively utilize computer graphics system and various interface devices such as reality and control to provide immersive technology in an interactive three-dimensional environment generated on a computer. The main configuration of general VR glasses is the two built-in lenses, so that the images seen by the left and right eyes are separated independently and displayed on the screen continuously and alternately. Produces a three-dimensional effect of depth of field. [0003] While ensuring a good field of view, eye movement range and imaging quality, users are increasingly asking for small-sized and ultra-thin designs. The optical imaging module in VR equipment is...

Claims

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Application Information

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IPC IPC(8): G02B27/01
CPCG02B27/0172
Inventor 王天寅梅晶晶梁乾亿
Owner 江西微瑞光学有限公司
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