Optical device, system and optical apparatus

A technology of optical devices and optical systems, applied in optical components, optics, instruments, etc., can solve the problems of poor system flexibility, difficulty in realizing light field display, and can not replace lens/reflector light compression or expansion, etc., and achieve volume reduction. Effect

Pending Publication Date: 2021-04-20
SHANGHAI INTELIGHT ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technologies are often realized by waveguide systems (such as diffractive waveguides, arrayed waveguides, etc.), but the above-mentioned waveguides themselves only have the ability to expand pupils, and cannot replace optical devices such as lenses/mirrors to achieve modulation such as compression or expansion of light function, and the inciden

Method used

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  • Optical device, system and optical apparatus
  • Optical device, system and optical apparatus
  • Optical device, system and optical apparatus

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0047]Example 1

[0048]Such asFigure 1A ,1bAccording to 1C, the present embodiment is used as a zipper in a reality display system, which is composed of a Fresnel lens that is brought by two tooth surfaces (for easy production, glue or bonding, the Fresnel lens The teeth may be equal, each of which can be between 10 and 30 microns, and the teeth here may be a single teeth, or a tooth line or column in a one-dimensional direction, or a tooth having the same center. Ring or belt, or a combination of these forms), the optical parameters corresponding to each of the teeth may be independently designed (eg, the curvature of each tooth is different), one of which Fresnel lens is fitted with another Fresnel lens. The surface is plated with angular selective increase in membranes. One of the Fresnel lens is glued to have a medium waveguide, and the refractive index is the same or similar to the Fresnel lens, and the waveguide receives the image light output, and the image output of the image ...

Example Embodiment

[0056]Example 2

[0057]Such asFigure 7 As shown, another enhanced azer in a real display system, a phase-fit structure (which can be an off-axis design having a certain refractiveness may be a periodic repeating microstructure. The optical device is composed, wherein the surface of the device is coated with another device with a polarized selective increase in a membrane. The image light is linearly polarized light (e.g., using an LCOS device using an LCOS device, the image light relative to the tooth surface of the Fresnel lens is p-light), from one side of the device, when it is incident on the two-piece device interface, it is all Reflection (or in some embodiments may also be partially reflected, for example 50% reflection). The ambient light is incident from one side of the other device, and when the two-piece interface is incident, the polarization direction is all of the S component, or may be mostly transmitted, for example 95%), and the components of the polarization directio...

Example Embodiment

[0061]Example 3

[0062]Such asFigure 8As shown, another enhanced azer in a real display system, composed of an optical device having a phase-fitted toothed structure by two side surfaces. The image light is incident from one surface of a structure at a certain angular range, and then reaches its toothed surface after the structure, wherein the toothed structure is plated with a retrorefil in the direction surface of the image light incident, and the image light is reflected, for the image Light, these toothed structures correspond to mirrors (radius, conical coefficient, aspherical high-order ", etc.) having a certain optical parameter. The surface opposite the direction in which the image light incident is plated with an enhancement film (if the refractive index of the material of the two devices is close or the same or the same may not be plated into the film), the external ambient light is incident from another device, transmitting another When the device reaches the interface, the...

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Abstract

The invention provides an optical device, a system and an optical apparatus, the optical device is composed of a plurality of parts, light rays satisfying a predetermined characteristic propagate on an interface of the plurality of parts in one manner, and light rays not satisfying the predetermined characteristic propagate on the interface in another manner. According to the invention, at least part of parts with matched tooth surfaces are adopted, and the ambient light is equivalent to transmitting a flat medium and is not influenced by the parts to change the focal power. And the image light is equivalently reflected by a reflector with focal power after being reflected by the tooth-shaped structure of one part, so that the focal power of the image light is changed.

Description

technical field [0001] The present invention relates to the field of optical devices, in particular to an optical device, a system and an optical device. Background technique [0002] In some optical applications such as AR display and transparent display, it is necessary to combine light rays, and the corresponding combined image light often needs to be modulated (such as compression or expansion, focusing, etc.), and often requires optical devices (such as lenses) The modulated light travels a certain distance, so that the entire optical system must occupy a certain amount of space. In some volume-sensitive applications, such as head-mounted AR / VR systems, mobile phones, and camera lenses for wearable devices, it is a design challenge to compress the volume of the optical system and improve light efficiency. [0003] Just as the patent document "Diffraction waveguide capable of pupil expansion and uniform light output" (CN111123524A), waveguide substrate, incident grating...

Claims

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Application Information

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IPC IPC(8): G02B5/124G02B27/28G02B27/01
CPCG02B27/01G02B27/28G02B5/124
Inventor 谈顺毅陈理军
Owner SHANGHAI INTELIGHT ELECTRONICS TECH CO LTD
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