Lens components and stereo display device including the same

Abstract

The invention discloses a lens unit, comprising a concave lens and a matched convex lens which are made from double refractive materials, wherein one refractive index of the concave lens is same as one refractive index of the convex lens, the concave lens represents a common light refractive index for the polarized light of a certain polarization direction while the convex lens represents an extraordinary light refractive index, the concave lens can represent an extraordinary light refractive index for the polarized light of a certain polarization direction while the convex lens can represent a common light refractive index. The invention further discloses a grating formed by the lens element and a stereoscopic display device containing the grating. The invention can reduce arch rise of micro lens, make the arrangement of liquid crystals sequential and improve the transmittance of double refractive gratings.

Description

technical field [0001] The invention relates to the field of optics, in particular to a lens component made of birefringent material and a stereoscopic display device comprising the component. Background technique [0002] Human beings perceive the depth of an object through the subtle difference between the objects seen by the right eye and the left eye, thereby recognizing a stereoscopic image. This difference is called parallax. Stereoscopic display technology is to create the parallax of the left and right eyes of people through artificial means, and send two images with parallax to the left and right eyes respectively, so that the brain can observe the real three-dimensional objects after obtaining the different images seen by the left and right eyes. a feeling of. There are generally two types of naked-eye stereoscopic display devices: a slit grating-type naked-eye stereoscopic display device and a microlens array-type naked-eye stereoscopic display device. The micr...

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Problems solved by technology

[0003] In the prior art, there are a variety of naked-eye stereoscopic display devices that can realize conversion between 2D and 3D. For example, Chinese patent publication CN1539095 describes a technical solution that uses a lenticular lens array component as a grating to realize 2D-3D conversion. The cylindrical lens array assembly is composed of a single refractive index microlens array and a double refractive index microlens array. However, due to the small difference in refractive index of a single liquid crystal, the arch height of the lens needs to be large when the conditions are met, which leads to liquid crystal alignment. The degree of order is relatively poor, and the thickness increases, resulting in a decrease in transparency and affecting the optical effect

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