An optical system includes a display panel, an image former, a viewing window, a proximal beam splitter, and a distal beam splitter. The display panel is configured to generate a light pattern. The image former is configured to form a virtual image from the light pattern generated by the display pan
An optical system includes a display panel, an image former, a viewing window, a proximal beam splitter, and a distal beam splitter. The display panel is configured to generate a light pattern. The image former is configured to form a virtual image from the light pattern generated by the display panel. The viewing window is configured to allow outside light in from outside of the optical system. The virtual image and the outside light are viewable along a viewing axis extending through the proximal beam splitter. The distal beam splitter is optically coupled to the display panel and the proximal beam splitter and has a beam-splitting interface in a plane that is parallel to the viewing axis. A camera may also be optically coupled to the distal beam splitter so as to be able to receive a portion of the outside light that is viewable along the viewing axis.
대표청구항▼
1. An optical system, comprising: a display panel configured to generate a light pattern;an image former configured to form a virtual image from the light pattern generated by the display panel;a viewing window configured to allow outside light in from outside of the optical system;a proximal beam s
1. An optical system, comprising: a display panel configured to generate a light pattern;an image former configured to form a virtual image from the light pattern generated by the display panel;a viewing window configured to allow outside light in from outside of the optical system;a proximal beam splitter through which the outside light and the virtual image are viewable along a viewing axis; anda distal beam splitter optically coupled to the display panel and the proximal beam splitter. 2. The optical system of claim 1, further comprising: a light source optically coupled to the distal beam splitter, wherein the display panel is configured to generate the light pattern by spatially modulating light from the light source to provide spatially-modulated light. 3. The optical system of claim 2, wherein the distal beam splitter is configured to reflect toward the proximal beam splitter at least a portion of the spatially-modulated light provided by the display panel. 4. The optical system of claim 3, wherein the distal beam splitter is a polarizing beam splitter. 5. The optical system of claim 4, wherein the proximal beam splitter is a polarizing beam splitter. 6. The optical system of claim 5, further comprising a half-wave plate between the distal beam splitter and proximal beam splitter. 7. The optical system of claim 6, wherein the image former comprises a concave mirror and a quarter-wave plate. 8. The optical system of claim 7, wherein the proximal beam splitter is between the half-wave plate and the image former. 9. The optical system of claim 2, further comprising a reflector optically coupled to the distal beam splitter, wherein the distal beam splitter is configured to reflect at least a portion of the light from the light source toward the display panel via the reflector. 10. The optical system of claim 1, wherein the display panel comprises an emissive display. 11. A wearable computing device, comprising: a head-mountable support;an optical system attached to the head-mountable support, wherein the optical system comprises: a display panel configured to generate a light pattern;an image former configured to form a virtual image from the light pattern generated by the display panel;a proximal beam splitter through which the virtual image is viewable; anda distal beam splitter optically coupled to the display panel and the proximal beam splitter; anda computer attached to the head-mountable support, wherein the computer is configured to control the display panel. 12. The wearable computing device of claim 11, further comprising: a light source optically coupled to the distal beam splitter, wherein the display panel is configured to generate the light pattern by spatially modulating light from the light source to provide spatially-modulated light. 13. The wearable computing device of claim 12, wherein the distal beam splitter is configured to reflect toward the proximal beam splitter at least a portion of the spatially-modulated light provided by the display panel. 14. The wearable computing device of claim 13, wherein the distal beam splitter is a polarizing beam splitter. 15. The wearable computing device of claim 14, wherein the proximal beam splitter is a polarizing beam splitter. 16. The wearable computing device of claim 15, further comprising a half-wave plate between the distal beam splitter and proximal beam splitter. 17. The wearable computing device of claim 16, wherein the image former comprises a concave mirror and a quarter-wave plate. 18. The wearable computing device of claim 17, wherein the proximal beam splitter is between the half-wave plate and the image former. 19. The wearable computing device of claim 12, further comprising a reflector optically coupled to the distal beam splitter, wherein the distal beam splitter is configured to reflect at least a portion of the light from the light source toward the display panel via the reflector. 20. The wearable computing device of claim 11, wherein the display panel comprises an emissive display.
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