Abstract: An optical system may include a lens assembly that has two or more single-sided wafer level optics (WLO) lenses arranged to propagate light. The optical system can further include an image sensor, wherein the lens assembly is arranged relative to the image sensor to propagate light received at a first surface of the lens assembly, through the two or more single-sided WLO lenses and to the image sensor. In some embodiments, the optical system further includes a camera which includes the lens assembly and the image sensor. In various embodiments, a smart phone, a tablet computer, or another mobile computing device may include such a camera. In some embodiments, the at least two single-sided wafer level optics (WLO) lenses are each separated by a gap G, wherein the gap may be different between each of the single-sided lenses, and the gap G may be zero.

Abstract: Certain aspects relate to systems and techniques for folded optic stereoscopic imaging, wherein a number of folded optic paths each direct a different one of a corresponding number of stereoscopic images toward a portion of a single image sensor. Each folded optic path can include a set of optics including a first light folding surface positioned to receive light propagating from a scene along a first optical axis and redirect the light along a second optical axis, a second light folding surface positioned to redirect the light from the second optical axis to a third optical axis, and lens elements positioned along at least the first and second optical axes and including a first subset having telescopic optical characteristics and a second subset lengthening the optical path length. The sensor can be a three-dimensionally stacked backside illuminated sensor wafer and reconfigurable instruction cell array processing wafer that performs depth processing.

Abstract: Certain aspects relate to wafer level optical designs for a folded optic stereoscopic imaging system. One example folded optical path includes first and second reflective surfaces defining first, second, and third optical axes, and where the first reflective surface redirects light from the first optical axis to the second optical axis and where the second reflective surface redirects light from the second optical axis to the third optical axis. Such an example folded optical path further includes wafer-level optical stacks providing ten lens surfaces distributed along the first and second optical axes. A variation on the example folded optical path includes a prism having the first reflective surface, wherein plastic lenses are formed in or secured to the input and output surfaces of the prism in place of two of the wafer-level optical stacks.

Abstract: Certain aspects relate to wafer level optical designs for a folded optic stereoscopic imaging system. One example folded optical path includes first and second reflective surfaces defining first, second, and third optical axes, and where the first reflective surface redirects light from the first optical axis to the second optical axis and where the second reflective surface redirects light from the second optical axis to the third optical axis. Such an example folded optical path further includes wafer-level optical stacks providing ten lens surfaces distributed along the first and second optical axes. A variation on the example folded optical path includes a prism having the first reflective surface, wherein plastic lenses are formed in or secured to the input and output surfaces of the prism in place of two of the wafer-level optical stacks.

Abstract: Certain aspects relate to systems and techniques for folded optic stereoscopic imaging, wherein a number of folded optic paths each direct a different one of a corresponding number of stereoscopic images toward a portion of a single image sensor. Each folded optic path can include a set of optics including a first light folding surface positioned to receive light propagating from a scene along a first optical axis and redirect the light along a second optical axis, a second light folding surface positioned to redirect the light from the second optical axis to a third optical axis, and lens elements positioned along at least the first and second optical axes and including a first subset having telescopic optical characteristics and a second subset lengthening the optical path length. The sensor can be a three-dimensionally stacked backside illuminated sensor wafer and reconfigurable instruction cell array processing wafer that performs depth processing.

Abstract: An optical system may include a lens assembly that has two or more single-sided wafer level optics (WLO) lenses arranged to propagate light. The optical system can further include an image sensor, wherein the lens assembly is arranged relative to the image sensor to propagate light received at a first surface of the lens assembly, through the two or more single-sided WLO lenses and to the image sensor. In some embodiments, the optical system further includes a camera which includes the lens assembly and the image sensor. In various embodiments, a smart phone, a tablet computer, or another mobile computing device may include such a camera. In some embodiments, the at least two single-sided wafer level optics (WLO) lenses are each separated by a gap G, wherein the gap may be different between each of the single-sided lenses, and the gap G may be zero.

Abstract: This disclosure provides systems, methods and apparatus for light-guiding layers including light-turning features with multiple reflective surfaces oriented at different angles to the light-guiding layer. In one aspect, the multiple reflective surfaces may be located on each individual light-turning feature, while in another aspect, the multiple reflective surfaces may be located on separate light-turning features. The use of multiple reflective surfaces oriented at different angles can improve the efficiency and appearance of a frontlight system using such a light-guiding layer.

Abstract: This disclosure provides systems, methods and apparatus for illumination, such as for illuminating displays, including reflective displays. An illumination device may include a light-extracting, diffusive holographic medium. The holographic medium may be a holographic film and may be disposed on the surface of a light guide, and includes a hologram that both extracts light out of the light guide and diffuses this extracted light for propagation towards the display elements of the display. The hologram can extract light by redirecting light, which is propagating within the light guide, so that the light propagates out of the light. The diffusion occurs upon the light being redirected, as the hologram redirects the light towards the light guide in a controlled range of angles.

Abstract: This disclosure provides systems, methods and apparatus for an imaging system that includes a light guide having light-turning features that are configured to receive ambient light incident on the light guide, including light scattered from a scene to be imaged, and to direct the received ambient light towards an image sensor. The light-turning features may have angle-discriminating properties so that some light-turning features capture light incident upon the light guide at certain angles of incidence, but not others. Light scattered from multiple parts of a scene to be imaged may then be directed to correlated locations on an image sensor, which provides electronic data representing an image.

Abstract: This disclosure provides systems, methods and apparatus for an imaging system that includes a light guide having light-turning features that are configured to receive ambient light incident on the light guide, including light scattered from a scene to be imaged, and to direct the received ambient light towards an image sensor. The light-turning features may have angle-discriminating properties so that some light-turning features capture light incident upon the light guide at certain angles of incidence, but not others. Light scattered from multiple parts of a scene to be imaged may then be directed to correlated locations on an image sensor, which provides electronic data representing an image.

Abstract: A system is provided herein for inspecting a specimen. In one embodiment, the system may include a dual-channel microscope, two illuminators, each coupled for illuminating a different channel of the dual-channel microscope and two detectors, each coupled to a different channel of the dual-channel microscope for acquiring images of the specimen. Means are provided for separating the channels of the dual-channel microscope, so that the two detectors can acquire the images of the specimen at substantially the same time. In one embodiment, the channels of the dual-channel microscope may be spectrally separated by configuring the two illuminators, so that they produce light in two substantially non-overlapping spectral ranges.

Abstract: A system is provided herein for inspecting a specimen. In one embodiment, the system may include a dual-channel microscope, two illuminators, each coupled for illuminating a different channel of the dual-channel microscope and two detectors, each coupled to a different channel of the dual-channel microscope for acquiring images of the specimen. Means are provided for separating the channels of the dual-channel microscope, so that the two detectors can acquire the images of the specimen at substantially the same time. In one embodiment, the channels of the dual-channel microscope may be spectrally separated by configuring the two illuminators, so that they produce light in two substantially non-overlapping spectral ranges.

Abstract: A virtual image display system is provided which comprises a non-emissive, reflective microdisplay which forms a source object; an optical system which forms a magnified, virtual image of the source object from light reflected off the microdisplay; a light source system which produces light to illuminate the display system; and an illumination system which forms at least two virtual light sources to illuminate the display system.

Abstract: One embodiment of the present invention is a visual field tester that includes: (a) a high intensity light source; (b) an optical fiber; (c) scanning optics, wherein light output from the light source is directed by the optical fiber to impinge upon the scanning optics, and the scanning optics directs the light to form a stimulus at various field positions; and (d) a video display system to output one or more light patterns. Another embodiment of the present invention is a visual field tester that includes: (a) a video display system to output one or more types of light patterns; (b) a background illumination display system; and (c) viewing optics to magnify the field of view of the video display system and the background illumination display system.

Abstract: A virtual image display system is provided which comprises a non-emissive, reflective microdisplay which forms a source object; an optical system which forms a magnified, virtual image of the source object from light reflected off the microdisplay; a light source system which produces light to illuminate the display system; and an illumination system which forms at least two virtual light sources to illuminate the display system.

Abstract: One embodiment of the present invention is a visual field tester that includes: (a) a high intensity light source; (b) an optical fiber; (c) scanning optics, wherein light output from the light source is directed by the optical fiber to impinge upon the scanning optics, and the scanning optics directs the light to form a stimulus at various field positions; and (d) a video display system to output one or more light patterns. Another embodiment of the present invention is a visual field tester that includes: (a) a video display system to output one or more types of light patterns; (b) a background illumination display system; and (c) viewing optics to magnify the field of view of the video display system and the background illumination display system.

Abstract: A virtual image display system is provided which comprises a non-emissive, reflective microdisplay which forms a source object; an optical system which forms a magnified, virtual image of the source object from light reflected off the microdisplay; a light source system which produces light to illuminate the display system; and an illumination system which forms at least two virtual light sources to illuminate the display system.

Abstract: A virtual image display system is provided which comprises a non-emissive, reflective microdisplay which forms a source object; an optical system which forms a magnified, virtual image of the source object from light reflected off the microdisplay; a light source system which produces light to illuminate the display system; and an illumination system which forms at least two virtual light sources to illuminate the display system.