Visual optical system and head-mounted display device

Abstract

The invention discloses a visual optical system and a head-mounted display device. The visual optical system comprises a fifth lens, a fourth lens, a third lens, a second lens and a first lens which are sequentially arranged along a light incidence direction, and is characterized in that the first lens is a biconvex lens with positive focal power, the second lens is a meniscus-shaped lens with negative focal power, the third lens is a biconvex lens with positive focal power, the fourth lens is a biconvex lens with positive focal power, and the fifth lens is a meniscus-shaped lens with negative focal power. The advantages lie in that the visual optical system has the characteristics of light weight, compact structure, large exit pupil diameter and exit pupil distance, improvement in user experience, excellent imaging quality, high resolution and the like through controlling arrangement of concave-convex surfaces of the lenses, being complemented by other optical relation expressions to control related parameters and using glass and plastic lenses in a matched manner.

Description

technical field [0001] The present application relates to a visual optical system, in particular to a visual optical system and a head-mounted display device. Background technique [0002] In recent years, due to the rise of wearable electronic devices, miniaturized display modules including visual optical systems and microdisplays have flourished, and are widely used in head-mounted display devices. Head-mounted display devices are widely used in military, aerospace, medical, entertainment, simulation training and other fields. As head-mounted display devices are more and more widely used, the requirements for imaging quality and comfort of use are getting higher and higher, and the quality of imaging and comfort of use mainly depend on the optical eyepiece system. design. [0003] At present, some head-mounted eyepiece systems and head-mounted display devices are proposed on the market. The eyepiece system uses 4 lenses. Although it is small in size and light in weight, ...

AI Technical Summary

Problems solved by technology

[0003] At present, some head-mounted eyepiece systems and head-mounted display devices are proposed on the market. The eyepiece system uses 4 lenses. Although it is small in size and light in weight, it has large distortion, small exit pupil, and poor user experience. It cannot meet the increasing demands of consumers; other optical lenses are composed of six lenses. Although they have good optical performance and imaging quality, they all use glass lenses, which are heavy and reduce user comfort.

[0004] In addition, for the eyepiece system, when the object size is fixed, the smaller the focal length, the larger the field of view, the larger the magnification of the system, and the greater the design difficulty

Although there are many head-mounted systems on the market, the field of view, exit pupil diameter, and exit pupil distance of most products are small, which reduces user comfort

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