Patent ID: 9715110
Date: 2017-07-25
CPC Classifications: G02B

Claim:
1. A head up display for use in a vehicle including a glareshield, comprising: a waveguide combiner having an input grating, a turning grating and an output grating; and a projector configured to provide light to the input grating, the light entering the waveguide combiner through the input grating, wherein a pupil associated with the projector is expanded in a first direction by the turning grating and is expanded in a second direction by the output grating, wherein the projector comprises a first image source for instrumentation information and a second image source for conformal data, wherein a first image from the first image source is projected at a first focal distance and a second image from the second image source is projected at a second focal distance wherein the first focal distance is less than the second focal distance, wherein the first image is a color image and the second image is a monochrome image, wherein the first image source comprises a scanning laser.