OPTICAL COMBINER FOR NEAR-EYE DISPLAY

摘要

An optical combiner includes a first, second, and third color combiner layer (“CCL”). The first CCL includes a first diffractive grating coated with a first filter configured to reflect a first color light and pass a second and a third color light. The second CCL includes a second diffractive grating coated with a second filter configured to reflect the second color light and pass the third color light. The third CCL includes a third diffractive grating coated with a third filter configured to partially reflect visible light. The diffractive gratings are each embedded in an index matched material and are angle-tuned diffractive gratings configured to receive image light at an angle and respectively reflect the first, second, and third color light in the image light at an order of diffraction that directs the light to an eye of a user.

主权项

1. An optical combiner having an eye-ward side and an external scene side, the optical combiner comprising:
a first color combiner layer (“CCL”) including a first diffractive grating coated with a first filter configured to reflect a first color light and pass a second and a third color light; a second CCL including a second diffractive grating coated with a second filter configured to reflect the second color light and pass the third color light; and a third CCL including a third diffractive grating coated with a third filter configured to partially reflect visible light, wherein the first, second, and third diffractive gratings are each embedded in an index matched material and are angle-tuned diffractive gratings configured to receive image light at an angle and respectively reflect the first, second, and third color light in the image light at an order of diffraction that directs the first, second, and third color light in a direction substantially normal to an eye of a user to present images to the user.