Optical system and augmented reality device

An optical system and relationship technology, applied in optics, optical components, instruments, etc., can solve the problems of heavy weight and large volume of AR equipment

Active Publication Date: 2020-06-09
GOERTEK OPTICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides an optical system and an augmented reality device, a

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  • Optical system and augmented reality device
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  • Optical system and augmented reality device

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no. 1 example

[0078] In the first embodiment, the optical system design data are shown in Table 1 below:

[0079] Table 1

[0080]

[0081] Wherein, the first surface 21 to the sixth surface 42 are all aspherical structures, wherein A4, A6, A8, A10, and A12 are aspheric high-order coefficients of the aspheric lens, as shown in Table 2.

[0082] Table 2

[0083]

[0084] In the first embodiment, each parameter is as follows:

[0085] The focal length f of the optical system is 8.3mm;

[0086] The focal length f1 of the first lens 20 is 7.75 mm;

[0087] The focal length f2 of the second lens 30 is -5.64mm;

[0088] The focal length f3 of the third lens 40 is 6.04mm;

[0089] f1 / f3=1.283; f1 / f=0.934; f2 / f=-0.68; f3 / f=0.728;

[0090] The aperture number of the optical system is 2.1;

[0091] The lens thickness T1 of the first lens 20 along the optical axis direction is 1.39mm;

[0092] The lens thickness T2 of the second lens 30 along the optical axis direction is 1.0mm;

[0093...

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Abstract

The invention discloses an optical system and augmented reality equipment, and the optical system sequentially comprises a display unit, a third lens, a second lens and a first lens in a light transmission direction, the first lens and the third lens have positive focal power, and the second lens has negative focal power; the first lens comprises a first surface and a second surface, the first surface is of a concave aspheric surface structure, and the second surface is of a convex aspheric surface structure; the second lens comprises a third surface and a fourth surface, the third surface isof a convex aspheric surface structure, and the fourth surface is of a concave aspheric surface structure; the third lens comprises a fifth surface and a sixth surface, the fifth surface is of a convex aspheric surface structure, and the sixth surface is of a convex aspheric surface structure. The invention provides an optical system and augmented reality equipment, and aims to solve the problemsof large size and heavy weight of AR equipment in the prior art.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to an optical system and an augmented reality device. Background technique [0002] Wearable devices are a new development direction in the field of optoelectronic imaging, and augmented reality devices, as augmented reality devices in wearable devices, are gradually developing in the direction of light weight and miniaturization. [0003] In the existing AR equipment, the optical system is the main working part of the AR equipment. The optical system is composed of a display unit and a mirror group. The light emitted by the display unit is transmitted to the human eye after the action of the mirror group. For imaging quality, the lens group in AR devices usually needs to be combined with multiple lenses. When the number of lenses is large, the size and weight of the AR device will increase. Contents of the invention [0004] The present invention provides an optical syst...

Claims

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Application Information

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IPC IPC(8): G02B27/01
CPCG02B27/0172
Inventor 聂红星赵望妮
Owner GOERTEK OPTICAL TECH CO LTD
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