Electro-optical assembly for image projection, especially in portable instruments
First Claim
Patent Images
1. An arrangement for displaying an image for viewing by a human eye, comprising:
- a) a housing having a movable screen which has a front surface and a rear surface, and an optically diffusive property;
b) an energizable laser supported by the housing for projecting a laser beam toward the rear surface of the screen when energized and upon moving the screen to a deployed position;
c) a scanner supported by the housing for sweeping the laser beam along a plurality of light paths over the rear surface of the screen for diffusion therethrough; and
d) a controller supported by the housing and operatively connected to, and operative for energizing, the laser at selected positions of the laser beam in at least one of the light paths to generate individual light pixels at the selected positions, and at a refresh rate at which the pixels persist to enable the eye to steadily view the image comprised of a light pattern of the pixels visible on the front surface of the screen.
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Accused Products
Abstract
An arrangement for and method of projecting an image on a viewing surface include sweeping a light beam along a plurality of scan lines that extend over the viewing surface, and selectively illuminating parts of the image at selected positions of the light beam on the scan lines. The viewing surface can be remote from a housing supporting the arrangement, or can be located on the housing.
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Citations
55 Claims
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1. An arrangement for displaying an image for viewing by a human eye, comprising:
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a) a housing having a movable screen which has a front surface and a rear surface, and an optically diffusive property;
b) an energizable laser supported by the housing for projecting a laser beam toward the rear surface of the screen when energized and upon moving the screen to a deployed position;
c) a scanner supported by the housing for sweeping the laser beam along a plurality of light paths over the rear surface of the screen for diffusion therethrough; and
d) a controller supported by the housing and operatively connected to, and operative for energizing, the laser at selected positions of the laser beam in at least one of the light paths to generate individual light pixels at the selected positions, and at a refresh rate at which the pixels persist to enable the eye to steadily view the image comprised of a light pattern of the pixels visible on the front surface of the screen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An arrangement for displaying an image for viewing by a human eye, comprising:
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a) a housing having a screen which has a rear surface;
b) an energizable laser supported by the housing for projecting a laser beam toward the rear surface of the screen when energized;
c) a scanner supported by the housing for sweeping the laser beam along a plurality of light paths over the rear surface of the screen; and
d) a controller supported by the housing and operatively connected to, and operative for energizing, the laser at selected positions of the laser beam in at least one of the light paths to generate individual light pixels at the selected positions, and at a refresh rate at which the pixels persist to enable the eye to steadily view the image comprised of a light pattern of the pixels on the screen, and for changing a size of the light pattern as a function of screen position to adapt image size to screen size. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An arrangement for displaying an image for viewing by a human eye, comprising:
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a) a housing having a screen which has a rear surface;
b) an energizable laser supported by the housing for projecting a laser beam toward the rear surface of the screen when energized;
c) a scanner supported by the housing for sweeping the laser beam along a plurality of light paths over the rear surface of the screen;
d) a controller supported by the housing and operatively connected to, and operative for energizing, the laser at selected positions of the laser beam in at least one of the light paths to generate individual light pixels at the selected positions, and at a refresh rate at which the pixels persist to enable the eye to steadily view the image comprised of a light pattern of the pixels on the screen; and
e) a sensing element for sensing ambient light to provide brightness adjustment on the screen. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. An arrangement for displaying an age for viewing by a human eye, comprising:
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a) a housing having a screen which has a rear surface;
b) an energizable laser supported by the housing for projecting a laser beam toward the rear surface of the screen when energized;
c) a scanner supported by the housing for sweeping the laser beam along a plurality of light paths over the rear surface of the screen; and
d) a controller supported by the housing and operatively connected to, and operative for energizing, the laser at selected positions of the laser beam in least one of the light paths to generate individual light pixels at the selected positions, and at a refresh rate at which the pixels persist to enable the eye to steadily view the image comprised of a light pattern of the pixels on the screen, the controller being operative for energizing the laser at selected positions of the laser beam to generate individual light pixels depicting a cursor that is movable across the light pattern. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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Specification