Wearable Display Light Mixing Element for High Resolution

The invention divides the light mixing function into multiple sequential stages using a light mixing element with multiple layers. Each layer mixes a subset of wavelengths, and the mixing process is completed progressively through multiple reflections and transmissions, rather than attempting to mix all wavelengths simultaneously in a single stage. This segmentation enables effective light mixing even when pixel sizes are reduced.

The light mixing element extends the light mixing process into the depth dimension by using multiple internal layers and reflections. Instead of mixing all wavelengths in a single planar interface, the light undergoes sequential mixing through multiple layers at different depths, effectively utilizing the third dimension to achieve comprehensive wavelength mixing within a compact structure.

The invention combines multiple light sources emitting different wavelengths into a single integrated light mixing element. The light mixing element integrates the functions of multiple discrete optical components (such as dichroic mirrors, prisms, or waveguides) into one compact structure, allowing all wavelength components to be mixed together in a unified device rather than requiring separate optical paths for each wavelength.

The light mixing element serves multiple functions simultaneously: it acts as a wavelength separator, a mixer, and an optical guide all in one component. This multi-functional design eliminates the need for multiple specialized components, reducing overall device complexity while maintaining the capability to handle multiple wavelengths effectively.

The light mixing element acts as an intermediary component that facilitates efficient wavelength mixing through a structured internal design. It uses multiple reflective and transmissive layers as intermediary surfaces to guide and mix different wavelengths systematically, rather than relying on complex active control mechanisms or multiple discrete optical components.

The invention replaces complex mechanical wavelength mixing systems (such as moving mirrors or rotating prisms) with a static, fixed light mixing element that achieves wavelength mixing through its internal layered structure. This substitution eliminates mechanical complexity while maintaining or improving light mixing efficiency through the optimized optical path design.