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Optical system

An optical system and optical film technology, which is applied in the field of optical systems, can solve problems such as difficulty in ensuring imaging consistency, information leakage, and complicated processes, and achieve the effects of wide human eye movement range, avoiding information leakage, and good imaging quality

Pending Publication Date: 2018-09-28
NINGBO HONGYI OPTO ELECTRONICS CO LTD
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Problems solved by technology

The holographic grating solution is light and thin, with high transmittance, but the process is very complicated, expensive, and the viewing angle is limited; the reflective waveguide requires a responsible coating process and assembly process, which is difficult for mass production and difficult to guarantee imaging consistency; ordinary reflective prisms, the process is simple, but The angle of view is very small; the angle of view of the free-form prism is large, but the process is complicated, mass production is difficult, and the consistency is difficult to guarantee; in addition, some penetrating optical display solutions have the problem that the displayed image is visible to the outside world, causing the information browsed by the user to be perceived by the outside world , the confidentiality is poor, and there will be information leakage

Method used

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Embodiment approach 1

[0032] refer to figure 1 As shown, Embodiment 1 of the present invention provides an optical system, which is mainly applied to head-mounted products, such as AR glasses. The optical system includes a display system 10, a first optical lens 20, a second optical lens 30, The third optical lens 40 and the fourth optical lens 50 .

[0033] The display system 10 mainly plays the role of emitting light, and the light emitted by the display system 10 is defined as incident light 101 . In this embodiment, the display system 10 is an OLED display system or an LED display system, and the light emitted by the display system 10 is non-polarized light. Of course, the display system 10 can also adopt other display systems 10 that meet the requirements.

[0034] The first optical lens 20 is arranged on the optical path of the incident light 101, and the function of the first optical lens 20 is to reduce field curvature, distortion and dispersion. The quantity of the first optical lens 20...

Embodiment approach 2

[0052] refer to figure 2 As shown, Embodiment 2 of the present invention provides an optical system, which is mainly applied to head-mounted products, such as AR glasses. The optical system includes a display system 10, a first optical lens 20, a second optical lens 30, The third optical lens 40 , the fourth optical lens 50 and the fifth optical lens 60 .

[0053] It should be noted that the first optical lens 20, the second optical lens 30, the third optical lens 40 and the fourth optical lens 50 in this embodiment adopt the first optical lens 20 and the second optical lens 30 in the first embodiment. 1. For the structure, working principle and technical effects of the third optical lens 40 and the fourth optical lens 50 , reference may be made to the corresponding content in Embodiment 1, which will not be repeated here.

[0054] The display system 10 in this embodiment adopts an LCOS display system, and may also adopt an LCD display system. The light emitted by the LCOS ...

Embodiment approach 3

[0061] refer to image 3 As shown, Embodiment 3 of the present invention provides an optical system, which is mainly applied to head-mounted products, such as AR glasses. The optical system includes a display system 10, a first optical lens 20, a second optical lens 30 and The sixth optical lens 70 .

[0062] It should be noted that the display system 10, the first optical lens 20 and the second optical lens 30 in this embodiment adopt the display system 10, the first optical lens 20 and the second optical lens 30 in Embodiment 1, and its structure, For the working principle and the generated technical effects, reference may be made to the corresponding content in Embodiment 1, and details are not repeated here.

[0063] The sixth optical lens 70 is disposed on the optical path of the first reflected light 305 .

[0064] The sixth optical lens 70 includes a linear polarizer 502, a second quarter-wave plate 503, a second optical plate 401 and a third optical film 402 that are...

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Abstract

The invention provides an optical system, and belongs to the technical field of optical imaging and displaying. The optical system comprises a display system, a first optical lens, a second optical lens, a third optical lens and a four optical lens, light transmitted by the display system is incident light, the first optical lens is arranged on a light path of the incident light, light transmittedfrom the first optical lens is first transmission light, the second optical lens is arranged on a light path of the first transmission light, the first transmission light is treated by the second optical lens to generate first reflected light, the third optical lens is arranged on a light path of the first reflected light, the first reflected light is treated by the third optical lens, part of first reflected light reflects to generate second reflected light, the rest reflected light transmits to form second transmission light, the second reflected light enters the second optical lens and istransmitted out from the second optical lens, and the four optical lens is arranged on a light pat of the second transmission light. The optical system is simple in structure, light in weight and goodin imaging quality, light leakage is omitted, and information leakage is avoided.

Description

technical field [0001] The invention belongs to the technical field of optical imaging, and in particular relates to an optical system. Background technique [0002] One of the core technologies in the field of Augmented Reality (AR, Augmented Reality) is a penetrating optical display system, which can superimpose computer-generated images on the user's real vision, and seamlessly blend virtual images and real images. The combination of the digital world and the real world will bring users a new experience. At present, AR technology has been widely used in games, retail, education, industry, medical and other fields. [0003] At present, there are holographic gratings, reflective waveguides, ordinary reflective prisms and free-form surface prisms for transmissive optical displays. The holographic grating solution is light and thin, with high transmittance, but the process is very complicated, expensive, and the viewing angle is limited; the reflective waveguide requires a ...

Claims

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Application Information

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IPC IPC(8): G02B27/01
CPCG02B27/0172
Inventor 王锐
Owner NINGBO HONGYI OPTO ELECTRONICS CO LTD
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