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Lens and its manufacturing method, glasses and optical system

A lens and lens technology, applied in the fields of glasses, optical systems, lenses and their manufacturing methods, can solve the problems of chromatic aberration, non-adjustable focal length of Fresnel lens, structural design to be improved, etc., and achieve the effect of reducing chromatic aberration.

Active Publication Date: 2021-03-05
BOE TECH GRP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

However, the focal length of the Fresnel lens obtained by the above method is not adjustable, and because the focal length of the Fresnel lens is inversely proportional to the wavelength, there is a technical problem of chromatic aberration.
[0005] Therefore, the structural design of the current Fresnel lens still needs to be improved

Method used

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  • Lens and its manufacturing method, glasses and optical system
  • Lens and its manufacturing method, glasses and optical system
  • Lens and its manufacturing method, glasses and optical system

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Embodiment Construction

[0052] The following describes the embodiments of the present invention in detail, and those skilled in the art will understand that the following embodiments are intended to explain the present invention, and should not be regarded as limiting the present invention. Unless otherwise specified, in the following examples that do not explicitly describe specific techniques or conditions, those skilled in the art can carry out according to commonly used techniques or conditions in this field or according to product instructions.

[0053] In one aspect of the invention, the invention proposes a lens. refer to Figure 3-7 , to describe the lens of the present invention in detail.

[0054] According to an embodiment of the present invention, refer to image 3 , the lens includes a Fresnel liquid crystal lens 200 and a geometric lens 100 stacked in sequence, and the cooperation of the Fresnel liquid crystal lens 200 and the geometric lens 100 can adjust the focal length of the lens...

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Abstract

The invention provides a lens, a manufacturing method thereof, glasses and an optical system. The lens includes a Fresnel liquid crystal lens and a geometric lens which are sequentially stacked. The eyeglass that the present invention proposes, its Fresnel liquid crystal lens can electrically control the focal length of adjusting eyeglass, and Fresnel liquid crystal lens is also used in combination with geometric lens, the focal length of Fresnel liquid crystal lens and wavelength are inversely proportional, and geometric lens The focal length is directly proportional to the wavelength, and the combination of the two can effectively reduce the chromatic aberration problem of ordinary optical components.

Description

technical field [0001] The invention relates to the field of optical devices, in particular, the invention relates to a lens and a manufacturing method thereof, glasses and an optical system. Background technique [0002] In the principle of optics, when a luminous point P undergoes the diffraction effect, the light intensity distribution received on the observation screen is many groups of concentric rings with alternating bright and dark, where the distance from the center of the circle C to the luminous point P is z 1 , and the distance between the outer diameter of each ring and point P is z 1 +λ / 2, z 1 +λ, ...; and according to the principle of reversible optical path, a group of alternating light and dark rings are used as the optical modulation film, refer to figure 1 , it can achieve the same focusing function as a lens, and this special aperture that is blocked by odd or even wave bands is called a Fresnel zone plate. [0003] In the manufacture of Fresnel zone p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02C7/08G02B3/08
CPCG02B3/08G02C7/083G02C2202/20G02F1/29G02C2202/16G02F2201/122G02F2203/28
Inventor 赵伟利王倩赵文卿
Owner BOE TECH GRP CO LTD
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