LASER-SCANNING VIRTUAL IMAGE DISPLAY
First Claim
1. A virtual-image projector comprising:
- a laser configured to form a narrow beam;
first and second dilation optics, each one having a diffraction grating, the first dilation optic arranged to receive the narrow beam and to project a one-dimensionally dilated beam into the second dilation optic, the second dilation optic arranged to receive the one-dimensionally dilated beam and to project a two-dimensionally dilated beam;
first and second redirection optics, each one operatively coupled to a transducer, the first redirection optic arranged to direct the narrow beam into the first dilation optic at a first entry angle, the second redirection optic configured to direct the one-dimensionally dilated beam into the second dilation optic at a second entry angle; and
a controller configured to bias the transducers to vary the first and second entry angles.
2 Assignments
0 Petitions
Accused Products
Abstract
A virtual-image projector comprises a laser configured to form a narrow beam, first and second dilation optics, first and second redirection optics each having a diffraction grating, and a controller. The first dilation optic is arranged to receive the narrow beam and to project a one-dimensionally dilated beam into the second dilation optic. The second dilation optic is arranged to receive the one-dimensionally dilated beam and project a two-dimensionally dilated beam. The first and second redirection optics are each operatively coupled to a transducer. The first redirection optic is arranged to direct the narrow beam into the first dilation optic at a first entry angle. The second redirection optic is configured to direct the one-dimensionally dilated beam into the second dilation optic at a second entry angle. The controller is configured to bias the transducers to vary the first and second entry angles.
329 Citations
20 Claims
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1. A virtual-image projector comprising:
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a laser configured to form a narrow beam; first and second dilation optics, each one having a diffraction grating, the first dilation optic arranged to receive the narrow beam and to project a one-dimensionally dilated beam into the second dilation optic, the second dilation optic arranged to receive the one-dimensionally dilated beam and to project a two-dimensionally dilated beam; first and second redirection optics, each one operatively coupled to a transducer, the first redirection optic arranged to direct the narrow beam into the first dilation optic at a first entry angle, the second redirection optic configured to direct the one-dimensionally dilated beam into the second dilation optic at a second entry angle; and a controller configured to bias the transducers to vary the first and second entry angles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for projecting a virtual display image, the method comprising:
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biasing a first redirection optic to direct a narrow beam into a first dilation optic at a first entry angle; diffracting some of the narrow beam from the first dilation optic to form a one-dimensionally dilated beam; pivoting a second redirection optic to direct the one-dimensionally dilated beam from the first dilation optic into a second dilation optic at a second entry angle; diffracting some of the one-dimensionally dilated beam from the second dilation optic to form a two-dimensionally dilated beam; and modulating the narrow beam in synchronicity with the first and second entry angles so that the two-dimensionally dilated beam forms a virtual display image visible through the second dilation optic. - View Dependent Claims (16, 17, 18)
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19. A head-mounted display device for displaying a virtual display image for view by a wearer, the device comprising:
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a laser configured to form a narrow beam; first and second dilation optics, each one having a diffraction grating, the first dilation optic arranged to receive the narrow beam and to project a one-dimensionally dilated beam into the second dilation optic, the second dilation optic arranged to receive the one-dimensionally dilated beam and to project a two-dimensionally dilated beam; first and second redirection optics, each one pivotally mounted and coupled to a transducer configured to pivot the optic, the first redirection optic arranged to direct the narrow beam into the first dilation optic at a first entry angle, the second redirection optic configured to direct the one-dimensionally dilated beam into the second dilation optic at a second entry angle; a controller configured to bias the transducers to vary the first and second entry angles; and a wearable mount configured to position the second dilation optic a short distance in front of one eye of the wearer. - View Dependent Claims (20)
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Specification