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Optical systems and augmented reality devices

An optical system and related technology, applied in optics, optical components, instruments, etc., can solve the problems of large volume and heavy weight of AR equipment, and achieve the effect of solving large volume and reducing the number of lenses

Active Publication Date: 2022-04-22
GOERTEK OPTICAL TECH CO LTD
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  • Claims
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Problems solved by technology

[0004] The present invention provides an optical system and an augmented reality device, aiming to solve the problems of large volume and heavy weight of AR devices in the prior art

Method used

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  • Optical systems and augmented reality devices
  • Optical systems and augmented reality devices
  • Optical systems and augmented reality devices

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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 aspheric 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 1.39 mm;

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

[0093...

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Abstract

The invention discloses an optical system and an augmented reality device. The optical system sequentially includes a display unit, a third lens, a second lens, and a first lens along the light transmission direction, and the first lens and the third lens both have positive optical focus. degree, the second lens has a negative refractive power; the first lens includes a first surface and a second surface, the first surface is a concave aspheric structure, and the second surface is a convex aspheric structure; The second lens includes a third surface and a fourth surface, the third surface is a convex aspheric structure, and the fourth surface is a concave aspheric structure; the third lens includes a fifth surface and a sixth surface, so The fifth surface is a convex aspheric structure, and the sixth surface is a convex aspheric structure. The present invention provides an optical system and an augmented reality device, aiming to solve the problems of large volume and heavy weight of the AR device 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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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/01
CPCG02B27/0172
Inventor 聂红星赵望妮
Owner GOERTEK OPTICAL TECH CO LTD
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