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Micro display eyepiece and head-mounted equipment

A micro-display and eyepiece technology applied in the optical field to achieve the effects of compensating chromatic aberration, improving imaging quality, and reducing volume

Active Publication Date: 2017-01-18
GOERTEK OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a micro-display eyepiece and a head-mounted device to solve the problem that the existing eyepiece cannot realize a large field of view under the requirements of light weight and miniaturization

Method used

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  • Micro display eyepiece and head-mounted equipment
  • Micro display eyepiece and head-mounted equipment

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] figure 1 It is a schematic diagram of the structure of the micro-display eyepiece provided by the embodiment of the present invention. This system is a refraction-diffraction hybrid optical system.

[0022] The micro-display eyepiece includes a first positive lens 1 and a second positive lens 2, and the first positive lens 1 and the second positive lens 2 are sequentially arranged against the light incident direction, wherein the diaphragm 3 of the micro-display eyepiece is the pupil of the human eye, The distance from the first surface 11 of the first positive lens 1 is 10mm, wherein:

[0023] The first positive lens 1 has a first surface 11 facing the image side and a second surface 12 facing the object side;

[0024] The se...

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Abstract

The invention discloses a micro display eyepiece and head-mounted equipment. The micro display eyepiece comprises two positive lenses. A first positive lens and a second positive lens are orderly arranged against a light incident direction. A second surface and a third surface have diffraction surfaces with positive focal power. The focal powers are mutually compensated through diffraction surfaces and refraction surfaces, thus the light emitting screen of a micro display eyepiece realizes an 80-degree visual angle in the condition of 1 inch. Since the diffraction surfaces have positive color dispersion in a positive focal power state, the color difference of a compensation system can be compensated, the diffraction surfaces do not generate field curvature, and thus the imaging quality of an edge visual field can be improved further. At the same time, a plastic material which is easy to process is used to reduce the size of the lens. The micro display eyepiece and head-mounted equipment provided by the technical scheme can satisfy the market requirements of a light weight, a small size, low cost and a large visual field.

Description

[0001] The patent application of the present invention is a divisional application of the Chinese invention patent application with the filing date of November 28, 2014, the application number of 201410713899.1, and the title of "a micro-display eyepiece and head-mounted device". technical field [0002] The invention relates to the field of optical technology, in particular to a micro-display eyepiece and a head-mounted device. Background technique [0003] Micro-display (i.e. tiny screen) head-mounted devices are popular in the market due to their advantages of small screen size, low cost and light weight. [0004] The image height and viewing angle in the micro-display system satisfy the relationship h=fgtan(θ), where h is the half height of the screen, f is the focal length of the optical system, and θ is the half viewing angle. If the micro-display system provides a larger viewing angle, that is, under the requirement that h in the formula takes a small value and θ need...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B25/00G02B25/04G02B27/01
CPCG02B25/001G02B25/04G02B27/0101G02B27/0172G02B2027/0123
Inventor 王元鹏
Owner GOERTEK OPTICAL TECH CO LTD
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