An Inner Focus Virtual Reality Optical System

Abstract

The invention discloses an internal focusing virtual reality optical system comprising a diaphragm (100), a first lens (1), a second lens (2), a third lens (3) and a display screen (200) which are successively arranged behind the diaphragm (100). The first lens (1) is a dual convex aspherical lens with positive focal power; the second lens (2) is a dual convex aspherical lens with positive focal power; the third lens (3) is a dual concave aspherical lens with negative focal power; and, in the direction from the diaphragm (100) to the display screen (200), a first face and a second face of the first lens (1) are an aspherical surface and a spherical surface respectively, a first face and a second face of the third lens (3) are a spherical surface and an aspherical surface respectively; the second lens (2) and a third lens (3) are glued together by optical glue to form a glued lens. The system has simple structure, high clarity, large view field angle, and a broad application range.

Description

【Technical field】 [0001] The invention relates to an optical system, more specifically to an inner focusing virtual reality optical system. 【Background technique】 [0002] At present, virtual reality (Virtual Reality) is on the rise. The principle of VR glasses (virtual reality glasses) and virtual reality helmets is similar to a magnifying glass, which is to enlarge the picture, and the human eye perceives the enlarged picture. The current mainstream VR glasses and virtual reality helmet products are all one-piece lenses, which can achieve 3D effects, but the clarity is poor, the field of view angle is small, and the feeling of vertigo is strong when watching 3D images. Limited to too few parameters that can be used for optimization, it is difficult to improve the imaging quality of the lens. For example, aberrations such as dispersion and distortion are almost impossible to eliminate with a single lens. Therefore, the lens group solution is the development trend of lenses...

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