光学模组、显示控制方法以及头戴显示设备
CN116974078BActive Publication Date: 2026-07-17GEER TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GEER TECH CO LTD
- Filing Date
- 2023-07-11
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing AR products have shortcomings in virtual image distance adjustment, which limits their use cases and reduces the user's wearing experience.
Method used
Design an optical module including an optomechanical system, a light guide device, and a grating modulation device. By adjusting the distance between the light source and the optomechanical lens and the modulation of the grating structure in the coupling area by the grating modulation device, the virtual image distance can be adjusted.
Benefits of technology
It realizes the virtual image distance adjustment function of the optical module, improves the realism of the usage scenarios and display effects, and solves the problem of difficult virtual image distance adjustment in AR products.
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Smart Images
Figure CN116974078B_ABST
Abstract
本申请实施例提供了一种光学模组、显示控制方法以及头戴显示设备；光学模组包括光机，导光器件及光栅调制器件；光机包括光源及光机透镜，光源与光机透镜之间的距离可进行调节，使光学模组的虚像能呈现在多个不同的虚像距位置处；导光器件包括透明基板及设于透明基板上的耦入区及耦出区；光栅调制器件设于光机的周侧，用于根据目标虚像距位置对耦入区内的光栅结构进行调制，使得光栅结构重新排列以形成目标耦入光栅，且耦出区包括与任一目标耦入光栅相对应的耦出光栅；在光机发出的成像光线角度与目标耦入光栅的光栅角度相匹配的情况下，成像光线能经目标耦入光栅耦入至透明基板内并全反射传播至耦出区，在耦出区能够将成像光线进行耦出。
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