US 12,710,592 B2 · Waveguide device and optical engine

Abstract

A waveguide device includes a first diffractive element, a second diffractive element, a third diffractive element, and a waveguide element. The first diffractive element is configured to diffract light of a wavelength to propagate with a diffraction angle. The second diffractive element is configured to diffract the light of the wavelength to propagate with the diffraction angle. The third diffractive element is configured to diffract the light of the wavelength to propagate with the diffraction angle. The waveguide element is configured to guide the light of the wavelength to propagate from the first diffractive element to the second diffractive element and the third diffractive element. Diffraction efficiencies of the second diffractive element and the third diffractive element are different.

Claims17

Dependent claims

A waveguide device, comprising:

a first diffractive element configured to diffract light of a wavelength to propagate with a diffraction angle;
a second diffractive element configured to diffract the light of the wavelength to propagate with the diffraction angle and diffract light of another wavelength;
a third diffractive element configured to diffract the light of the wavelength to propagate with the diffraction angle and diffract the light of the another wavelength;
and
a waveguide element configured to guide the light of the wavelength to propagate from the first diffractive element to the second diffractive element and the third diffractive element, wherein diffraction efficiencies of the second diffractive element and the third diffractive element are different,
wherein each of the second diffractive element and the third diffractive element has different holographic gratings intersecting each other.

3 more elements

Dependencies are inferred from the claim text.

Waveguide device and optical engine

Life of this patent

Waveguide device and optical engine

Life of this patent

Abstract

Claims17