Dynamic push-pull lens for XR display
By using a combination of dynamic push/pull lenses and liquid crystal cell technology, the focal length and convergence distance of the virtual content are dynamically adjusted, solving the problem of visual distortion between virtual content and the real-world environment in optical XR displays, and achieving a higher level of visual realism and user comfort.
CN122122484APending Publication Date: 2026-05-29SNAP INC
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Patent Information
- Application Number
- CN202480070001.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-10-17
- Filing Date
- 2024-10-29
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
Existing optical see-through XR displays struggle to maintain user visual comfort and realism while faithfully presenting virtual content and real-world environments, especially when the focus distance and focal length are mismatched.
Method used
A dynamic push/pull lens combination is adopted, and the optical power of the lens is adjustable by using a liquid crystal cell. Through the electronically controlled birefringence effect, the focal length and convergence distance of the virtual content are dynamically adjusted, and a static lens is used to provide the baseline focal length.
Benefits of technology
It enhances the realism of virtual visual content, expands the range of perceptible distances, reduces user discomfort, and improves visual realism and comfort.
✦ Generated by Eureka AI based on patent content.
Abstract
An XR display system includes a near-eye optical see-through XR display having an image presentation component having an eye-facing side and an externally-facing side and configured to present virtual visual content to an eye of a user from a location on an image presentation surface of the eye-facing side. The dynamic push lens located on the outside facing side and the dynamic pull lens located on the eye facing side each comprise a liquid crystal cell capable of being dynamically switched between an inactive state and an active state through electrical stimulation. In the active state, the dynamic push lens converges ambient light approaching the image presentation member from the outside-facing side by applying a positive refractive power, and the dynamic pull lens diverges light emitted toward the eyes of the user from the eye-facing side of the image presentation member by applying a negative refractive power.
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