PROJECTOR WITH OPTICAL CONVERSION MEDIA PUMPED BY LOW ETENDUE SOURCE

摘要

A projector system with a single imaging array has a low-etendue light source. The projector system includes a first optical path from the low-etendue light source to a plurality of optical conversion media having a plurality of emission wavelengths to provide display light with wavelengths longer than blue light. The projector system includes a second optical path from the optical conversion media to the imaging array. The projector system has a means of moving an excitation location on the optical conversion media in the first optical path. The projector system may include a blue LED, a diffuser region, or an optical conversion medium with a blue emission wavelength to provide blue display light. Light from the low-etendue light source is prevented from directly impinging on the imaging array.

主权项

1. A projector system, comprising:
exactly one imaging array; a low-etendue light source having an etendue less than 10 millimeters squared—steradians with a center wavelength less than 470 nanometers; a rotatable structure having a plurality of optical conversion media in a reflective configuration, the optical conversion media having emission wavelengths longer than the wavelength of the low-etendue light source; a first optical path which extends from the low-etendue light source to the optical conversion media; and a second optical path which extends from the optical conversion media to the imaging array.