Integrated display and photosensor
First Claim
1. An apparatus for simultaneously imaging a subject and displaying computer generated image (“
- CGI”
) light to the subject, the apparatus comprising;
a Liquid Crystal on Silicon (“
LCOS”
) display disposed on a semiconductor die, wherein the LCOS display includes LCOS pixels configured to selectively generate the CGI light to be sent along a forward optical path;
a photodetector array disposed on the semiconductor die and positioned to receive non-visible image light directed along a reverse optical path, wherein the non-visible image light is reflected by the subject and travels along the reverse optical path in a substantially opposite direction as the CGI light to be sent along the forward optical path; and
a filter element disposed in the reverse optical path for substantially filtering out visible light and substantially passing the non-visible image light to the photodetector array, wherein the non-visible image light directed along the reverse optical path travels through at least a portion of one of the LCOS pixels before reaching one of the photodetector pixels.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for simultaneously imaging a subject and displaying computer generated image (“CGI”) light to the subject includes a display array and a photodetector array. The display array and the photodetector array are disposed on a same semiconductor die. The display array includes display pixels configured to selectively generate the CGI light to be sent along a forward optical path. The photodetector array is positioned to receive non-visible image light that is reflected by the subject and directed along a reverse optical path. The CGI light to be sent along the forward optical path travels in a substantially opposite direction as the non-visible image light directed along the reverse optical path.
20 Citations
24 Claims
-
1. An apparatus for simultaneously imaging a subject and displaying computer generated image (“
- CGI”
) light to the subject, the apparatus comprising;a Liquid Crystal on Silicon (“
LCOS”
) display disposed on a semiconductor die, wherein the LCOS display includes LCOS pixels configured to selectively generate the CGI light to be sent along a forward optical path;a photodetector array disposed on the semiconductor die and positioned to receive non-visible image light directed along a reverse optical path, wherein the non-visible image light is reflected by the subject and travels along the reverse optical path in a substantially opposite direction as the CGI light to be sent along the forward optical path; and a filter element disposed in the reverse optical path for substantially filtering out visible light and substantially passing the non-visible image light to the photodetector array, wherein the non-visible image light directed along the reverse optical path travels through at least a portion of one of the LCOS pixels before reaching one of the photodetector pixels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- CGI”
-
9. An apparatus for a head mounted display (“
- HMD”
), the apparatus comprising;a first light source for providing illumination light; a Liquid Crystal on Silicon (“
LCOS”
) array disposed on a semiconductor die, wherein LCOS pixels of the LCOS array are configured to selectively reflect the illumination light provided by the first light source to generate computer generated image (“
CGI”
) light to be sent along a forward optical path within an eyepiece;a second light source oriented to emit non-visible light in an eyeward direction of the HMD; a photodetector array disposed on the semiconductor die and positioned to receive a reflection of the non-visible light emitted in the eyeward direction, the reflection directed along a reverse optical path in the eyepiece in a substantially opposite direction as the CGI light along the forward optical path; an end reflector disposed at an opposite end of the eyepiece from the LCOS array; a polarizing beam splitter positioned to direct the illumination light to the LCOS array and disposed within the eyepiece between the end reflector and the LCOS array; and a beam splitter for directing the reflection of the non-visible light along the reverse optical path in the eyepiece, the beam splitter disposed within the eyepiece between the polarizing beam splitter and the end reflector. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
- HMD”
-
18. A method of operating a head mounted display (“
- HMD”
), the method comprising;acquiring view data corresponding to a field of view of a user of the HMD; receiving non-visible light reflected off of an eye of the user of the HMD to generate eye image data; determining a visual point of interest of the user based on the view data and the eye image data; and projecting refreshed computer generated image (“
CGI”
) light from a Liquid Crystal on Silicon (“
LCOS”
) array onto the eye of the user based on the visual point of interest, wherein a photodetector array receives the non-visible light and the photodetector array and the LCOS array are both disposed on a same semiconductor die, and wherein the non-visible light reflected off of the eye of the user travels through liquid crystal of the LCOS array before being received by the photodetector array. - View Dependent Claims (19, 20, 21, 22, 23, 24)
- HMD”
Specification