Two-piece free-form surface head mounted display optical system

Abstract

The invention relates to a two-piece free-form surface head mounted display optical system, and belongs to the field of optical system designs. The system comprises a microdisplay, a free-from surface prism with three optical surfaces and a free-form surface lens with two optical surfaces. Two of the three optical surfaces of the free-form surface prism in the two-piece free-form surface head mounted display optical system of the invention are free-form surfaces; the top surface of the prism, namely the third surface of the prism is a plane; and in a processing process, the top surface can serve as a base surface so as to reduce the difficulty in positioning the free-form surface and reduce processing cost. In the system, a free-form surface lens is added; the two optical surfaces of the free-form surface lens are respectively a free-form surface and a plane, so the processing difficulty is low; moreover, the surface shape parameters, the thickness, the eccentricity and a dip angle ofthe free-form surface lens can serve as optimization variables; and more optimization variables are more contributive to correcting a system aberration, so that a greater exit pupil diameter can be realized.

Description

technical field [0001] The invention relates to an optical system, especially a double-chip free-form surface head-mounted display optical system, which belongs to the field of optical system design and can be widely used in military, industrial, medical, entertainment, virtual reality and augmented reality fields. Background technique [0002] With the development of science and technology, the optoelectronic industry has higher and higher performance requirements for optical systems. Modern optoelectronic systems are developing toward miniaturization and high performance, so the corresponding optical system is required to achieve high imaging quality with a relatively compact structure. Head-mounted display is a typical modern optoelectronic display system, which has huge application value and market in the fields of multimedia entertainment, military, industry, medical treatment, virtual reality and augmented reality. The requirements for head-mounted displays are comfor...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a double-chip free-form surface head-mounted display optical system to solve the problems of small exit pupil diameter and difficult processing of the existing head-mounted displays

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