Head-Mounted Display Optics With Seamless Waveguide-Lens Docking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The docking seam between the waveguide sheet and optical lens in head mount displays causes light deflection and scattering, hindering the imaging effect.
Innovation Solution
An optical system with a first lens, correcting lens, and extensions that cover the docking locations between optical surfaces, ensuring seamless integration without visible seams, using transparent media of the same material to facilitate smooth light transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a waveguide sheet is used to direct light and couple light into human eyes, then the size of the head mount display is reduced, but a docking seam occurs between the waveguide sheet and the optical lens causing light deflection and scattering
Solution Approach 1:
An extension structure is introduced as an intermediary component between the waveguide sheet and the optical lens. This extension is made of the same transparent material as both components and covers the docking location, serving as a mediator that eliminates the refractive index mismatch at the interface. The extension seamlessly connects the waveguide sheet and optical lens, preventing light deflection and scattering while maintaining the compact design.
Solution Approach 2:
The extension is made of the same transparent material as the waveguide sheet and optical lens, ensuring homogeneous optical properties across the entire light path. By using identical materials with matching refractive indices, the invention eliminates optical discontinuities at the docking interface, allowing light to pass through without deflection or scattering.
2Manufacturing precision
If other optical lenses are spliced on the basis of the waveguide sheet, then a clear image can be formed, but the docking seam becomes visible to the user and hinders the imaging effect
Solution Approach 1:
The extension acts as an intermediary that bridges the waveguide sheet and optical lens, covering the docking seam from the user's view. By positioning the extension at the docking location and making it opaque or matching the surrounding material, the seam becomes invisible while the optical components maintain their precise alignment for clear imaging.
Solution Approach 2:
The extension is made of transparent material that matches the optical properties of the surrounding components, making the docking seam invisible. By matching the refractive index and visual appearance of the extension with the adjacent waveguide sheet and lens, the invention conceals the seam while preserving optical performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures clear imaging by eliminating visible docking seams, allowing light to pass through without scattering or deflection, thereby enhancing the user's viewing experience.
Implementation Method 1
light being incident into the first lens from the light input-coupling end-face is reflected to the docking end-face via at least one of the first surface and the second surface
Implementation Method 2
the first extension and the second extension are transparent media... allowing light to pass through without scattering or deflection
Data Source
AI summary
The present disclosure provides an optical system and a head mount device. The optical system comprises: a first lens, a correcting lens, a first extension, and a second extension, the first lens comprising a first surface and a second surface provided oppositely; the correcting lens provided on the docking end-face of the first lens and comprising a third surface which is docked with the first surface, and a fourth surface which is docked with the second surface; the first extension being integrally formed with the first lens or the correcting lens, extending to and covering a docking location between the first surface and the third surface, the second extension being integrally formed with the first lens or the correcting lens, extending to and covering a docking location between the second surface and the fourth surface.