Automatic image regulating arrangement for head-mounted image display apparatus
First Claim
Patent Images
1. An automatic image regulating arrangement for an enclosed image display device, comprising:
- a light opaque casing;
a display portion disposed in said casing and receivable of a video signal, said display portion including means for producing an image and a selectively energizable backlighting source which exclusively illuminates the image;
a first reflective member disposed in said casing for reflecting the image produced by said display portion in a first direction;
a single second semi-reflective member disposed statically in said casing for reflecting said image in a second direction different from said first direction, said second semi-reflective member exclusively permitting ambient light to be transmitted therethrough in said second direction into said casing;
sensor means for detecting a condition affecting visibility of said image displayed on said display portion and outputting a signal indicative thereof; and
regulating means for receiving said sensor output and including means for varying visibility of an image displayed at said display portion in response to said sensor signal, and for compensating for the visibility reducing effect of excess ambient light which is transmitted through said second semi-reflective member in said second direction.
1 Assignment
0 Petitions
Accused Products
Abstract
An automatic image regulating arrangement for a head-mounted image display device includes a sensor for detected conditions, such as outside ambient light, or vibration, applied to display elements of the display device and a regulating portion to control display of the images so as to compensate for conditions detected by the sensor so as to maintain good image visibility in various viewing environments.
-
Citations
15 Claims
-
1. An automatic image regulating arrangement for an enclosed image display device, comprising:
-
a light opaque casing; a display portion disposed in said casing and receivable of a video signal, said display portion including means for producing an image and a selectively energizable backlighting source which exclusively illuminates the image; a first reflective member disposed in said casing for reflecting the image produced by said display portion in a first direction; a single second semi-reflective member disposed statically in said casing for reflecting said image in a second direction different from said first direction, said second semi-reflective member exclusively permitting ambient light to be transmitted therethrough in said second direction into said casing; sensor means for detecting a condition affecting visibility of said image displayed on said display portion and outputting a signal indicative thereof; and regulating means for receiving said sensor output and including means for varying visibility of an image displayed at said display portion in response to said sensor signal, and for compensating for the visibility reducing effect of excess ambient light which is transmitted through said second semi-reflective member in said second direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An automatic image regulating arrangement for an enclosed image display device, comprising:
-
a light opaque casing adapted to be worn on the head of a viewer in a manner which encloses the viewer'"'"'s left and right eyes; a display means disposed in said casing, said display means being adapted to receive a video signal and including a pair of image display elements which produce display images for the respective left and right eyes of the viewer, said display means including a selectively energizable backlighting source which illuminates the images produced by said pair of image display elements; a first reflective member disposed in said casing for reflecting the images produced by said pair of display elements in a first direction; a single static second semi-reflective member disposed in said casing for reflecting the images reflected by said first reflective member in a second direction different from said first direction, said second semi-reflective member permitting ambient light to be transmitted therethrough in said second direction into said casing; sensor means for detecting a condition which varies with at least one of an ambient light level and a vibration which is applied to said pair of image display elements, and which deteriorates visibility of the images produced by said pair of display elements, and for outputting a signal indicative thereof; and regulating means responsive to the signal output by said sensor and including means for varying a characteristic of the images produced by said pair of image display elements in a manner which compensates for the image deteriorating effect of the condition which is detected by said sensor means. - View Dependent Claims (14, 15)
-
Specification