AN IMAGE PROJECTOR AND OPTICAL ASSEMBLY
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Accused Products
Abstract
An image projector is disclosed that can include a light source and a MEMS mirror to receive a light beam emitted by the light source and oscillate to scan the light beam across multiple-beam-generators that each include a planar beam splitter arranged to receive the light beam and generate multiple beams to project an image.
70 Citations
31 Claims
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1-15. -15. (canceled)
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16. An image projector comprising:
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a light source to provide a light beam; a MEMS mirror arranged to receive the light beam and to reflect the light beam; one or more multiple-beam-generators, each of the one or more multiple-beam-generators comprising; a planar beam splitter arranged to receive the light beam reflected by the MEMS mirror and transmit at least part of the light beam; and a planar reflector to receive the part of the light beam which is transmitted through the planar beam splitter to generate multiple beams, the planar beam splitter and the planar reflector arranged in parallel; and a focusing lens arranged to receive the multiple beams generated by the one or more multiple-beam-generators, for each of the one or more multiple-beam-generators, the distance (h) between the planar beam splitter and planar reflector is such that the optical distance (OD) between the planar beam splitter and planar reflector is greater than, or equal to, half the coherent length of the light beam. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. An optical assembly comprising,
an image projector comprising: -
a light source to provide a light beam; a MEMS mirror arranged to receive the light beam and to reflect the light beam; one or more multiple-beam-generators, each of the one or more multiple-beam-generators comprising; a planar beam splitter arranged to receive the light beam reflected by the MEMS mirror and transmit at least part of the light beam; and a planar reflector to receive the part of the light beam which is transmitted through the planar beam splitter to generate multiple beams, the planar beam splitter and the planar reflector arranged in parallel; and a focusing lens arranged to receive the multiple beams generated by the one or more multiple-beam-generators and transmit the light through the focusing lens, for each of the one or more multiple-beam-generators, the distance (h) between the planar beam splitter and planar reflector is such that the optical distance (OD) between the planar beam splitter and planar reflector is greater than, or equal to, half the coherent length of the light beam; a screen to receive light transmitted through the focusing lens and to diffuse the received light; and a head-up-display to receive light diffused by the screen. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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Specification