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Binary optical lens optical system of refractive-reflective free curved plane

A binary optics and optical system technology, applied in optics, optical components, installation, etc., can solve problems affecting imaging quality, large chromatic aberration, large imaging distortion, etc., and achieve the effect of improving reflection efficiency, small chromatic aberration, and light weight

Inactive Publication Date: 2014-02-12
SHENZHEN ESTAR DISPLAYTECH
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AI Technical Summary

Problems solved by technology

If a simple single-chip optical system is used, the imaging distortion and chromatic aberration are large, which seriously affects the imaging quality

Method used

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  • Binary optical lens optical system of refractive-reflective free curved plane
  • Binary optical lens optical system of refractive-reflective free curved plane
  • Binary optical lens optical system of refractive-reflective free curved plane

Examples

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Embodiment Construction

[0026] The present invention is implemented as follows:

[0027] in Figure 1 to Figure 4 In a refracted free-form surface binary optical prism optical system, the optical system includes a refracted free-form surface binary optical prism, which includes an incident surface 1, an exit surface 2 and a reflective surface 3. The incident surface 1 It is a diffractive surface that refracts incident light and converges into a refracted free-form surface binary optical prism; the exit surface 2 is a free-form surface, which totally reflects the light entering the prism from the incident surface 1 to the reflecting surface 3; The reflecting surface 3 is a spherical surface, and the light reflected from the exit surface 2 is reflected twice, and reflected back to the exit surface 2, and finally is refracted by the exit surface 2 and then aggregated into the pupil, so that a reflexed light can be seen The magnified image of a free-form binary optical prism.

[0028] The exit surface 2 is ...

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Abstract

The invention relates to an optical lens system, in particular to a refractive-diffractive mixed optical lens optical system consisting of a refractive-reflective free curved plane and a diffractive plane. The optical system comprises a refractive-reflective free curved plane binary optical lens, wherein the refractive-reflective free curved plane binary optical lens comprises an incident plane of the diffractive plane, a refractive plane of the refractive-reflective free curved plane and a spherical reflective plane; lights emitted by a display chip are converged into the lens by using the incident plane; lights entering the lens from the incident plane are all reflected to the reflective plane by using an emergent plane; lights reflected by the emergent plane are secondarily reflected by using the reflective plane, reflected to the emergent plane and finally refracted to parallel lights by using the emergent plane so as to enter pupils; and thus an image amplified by the refractive-reflective free curved plane binary optical lens can be seen. The refractive-diffractive mixed optical lens optical system provided by the invention has the following advantages: the structure of the optical system has the characteristics of small light energy loss, small color difference, clear imaging quality, light weight, convenience for wearing, less optical parts, simple structural form, convenience for assembling and simplicity for adjusting.

Description

Technical field [0001] The invention relates to an optical prism system, in particular to a refraction-diffraction hybrid optical prism optical system composed of a refracted free-form surface and a diffraction surface. Background technique [0002] Display optical products at this stage are all complex optical systems composed of optical elements of different materials. The main reason is that the optical system must correct imaging aberrations and chromatic aberrations so that they can meet the aberrations and chromatic aberrations required for display. If a simple single-chip optical system is used, the distortion and chromatic aberration of the image will be larger, which will seriously affect the image quality. [0003] The present invention uses a simple optical element to correct the aberration and chromatic aberration of the optical system to achieve high-definition imaging quality. Here the diffractive surface is used to effectively pull the focal position of the long wav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B17/08G02B7/18
Inventor 刘美鸿母林
Owner SHENZHEN ESTAR DISPLAYTECH
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