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Optical system and augmented reality equipment

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

Active Publication Date: 2020-06-19
GOERTEK OPTICAL TECH CO LTD
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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 system and augmented reality equipment
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  • Optical system and augmented reality equipment

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no. 1 example

[0086] In the first embodiment, the optical system design data are shown in Table 1 below:

[0087] Table 1

[0088]

[0089]Wherein, the first surface 21 to the sixth surface 47 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.

[0090] Table 2

[0091]

[0092] In the first embodiment, each parameter is as follows:

[0093] The focal length f of the optical system is 7.6mm;

[0094] The focal length f1 of the first lens 20 is -5.56mm;

[0095] The focal length f2 of the second lens 30 is 6.63 mm;

[0096] The focal length f3 of the third lens 40 is 9.29 mm;

[0097] The focal length f4 of the fourth lens 50 is -8.69mm;

[0098] The focal length f5 of the fifth lens 60 is 13.59 mm;

[0099] f1 / f=-0.732; f2 / f=0.872; f3 / f=1.222; f4 / f=-1.143; f5 / f=1.788;

[0100] f1 / f3=-0.598; f2 / f4=-0.763; f3 / f5=0.684;

[0101] The aperture number of the optical system is 2.5;

[0102] Th...

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Abstract

The invention discloses an optical system and augmented reality equipment. The optical system sequentially comprises a first lens, a second lens and a third lens in a light transmission direction; thefirst lens and the fourth lens have negative focal power, and the second lens, the third lens and the fifth lens have positive focal power; the first lens, the second lens, the third lens and the fourth lens are all spherical lenses; and the fifth lens is an aspheric lens. According to the optical system and the augmented reality equipment, the problems of large size and heavy weight of AR equipment in the prior art are solved.

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 Applications(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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