Reflective type virtual reality optical system

Abstract

The invention discloses a reflective type virtual reality optical system which comprises a diaphragm (100).A first lens (1) which is fixed relative to the diaphragm (100) and a second lens (2) which can move in a front-rear mode relative to the diaphragm (100) are arranged on one side of the diaphragm (100).A reflecting element (3) and a display screen (200) are arranged on one side of the second lens (2) far away from the diaphragm (100), light emitted by the display screen (200) is reflected through the reflecting element (3) to enter the second lens (2) and the first lens (1) and then reaches the diaphragm (100), the first lens (1) is a bi-convex aspheric lens having positive focal power, the second lens (2) is a meniscus aspheric lens having negative focal power, and the focal power of the reflecting element (3) is 0.The reflective type virtual reality optical system is simple in structure, high in definition, large in field angle, small in size and light in weight.

Description

【Technical field】 [0001] The invention relates to an optical system, more specifically to a reflective virtual reality optical system. 【Background technique】 [0002] At present, virtual reality (Virtual Reality, referred to as VR) and augmented reality (Augmented Reality, referred to as AR) have entered a period of rapid development. These devices are installed on the observer's head, so it must be compact and lightweight to reduce the load on the observer. For VR systems, a large field of view is very important. Only with a large field of view can the observer concentrate on observing high-quality dynamic images. Because the field of view, exit pupil diameter, and focal length of the VR system are mutually restricted It is very difficult to achieve a large field of view, a large exit pupil diameter and a short focal length at the same time. For this reason, lens groups and special lens solutions are the development trend of VR systems in the future. For the increasingly ...

AI Technical Summary

Problems solved by technology

For VR systems, a large field of view is very important. Only with a large field of view can the observer concentrate on observing high-quality dynamic images. Because the field of view, exit pupil diameter, and focal length of the VR system are mutually restricted It is very difficult to achieve a large field of view, a large exit pupil diameter and a short focal length at the same time

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