Abstract: A potentially small, gimballed, multi-sensor system employs a shared aperture for at least some of the image sensors. Applications include intelligence, surveillance, target acquisition and reconnaissance (ISTAR), and guiding autonomous vehicles. The system can actively blend images from multiple spectral bands for clarity and interpretability, provide remote identification of objects and material, provide anomaly detection, control lasers and opto-mechanics for image quality, and use shared aperture using folded optics.

Abstract: An optical system such as an imaging system, projecting system or combined imaging and projecting system, has complex dielectric coatings and/or reflecting polarizers to separate multiple spectral bands and/or polarizations on one or more of the system's curved mirrors.

Abstract: A digital camera optically couples a monocentric lens to image sensor arrays, without optical fibers, yet shields the image sensor arrays from stray light. In some digital cameras, baffles are disposed between an outer surface of a monocentric lens and each image sensor array to shield the image sensor arrays from stray light. In other such digital cameras, an opaque mask defines a set of apertures, one aperture per image sensor array, to limit the amount of stray light. Some digital cameras include both masks and baffles.

Abstract: A coupling interface arrangement is described for a photonic integrated circuit (PIC) device. The PIC includes an interface coupling surface having optical grating elements arranged to form optical output locations that produce corresponding light output beams. A coupling lens couples the light output beams into a conjugate plane at a far-field scene characterized by one or more optical aberrations that degrade optical resolution of the light outputs. The optical grating elements are configured to correct for the one or more optical aberrations.

Abstract: A LiDAR system includes an array of optical emitters, an objective lens optically coupling each optical emitter to a respective unique portion of a field of view, an optical switching network coupled between a laser and the array of optical emitters and a controller coupled to the optical switching network and configured to cause the optical switching network to route light from the laser to a sequence of the optical emitters according to a dynamically varying temporal pattern and to vary the temporal pattern in a way that reduces risk of eye injury from the laser light.

Abstract: An optical system such as an imaging system, projecting system or combined imaging and projecting system, has complex dielectric coatings and/or reflecting polarizers to separate multiple spectral bands and/or polarizations on one or more of the system's curved mirrors.

Abstract: A potentially small, gimballed, multi-sensor system employs a shared aperture for at least some of the image sensors. Applications include intelligence, surveillance, target acquisition and reconnaissance (ISTAR), and guiding autonomous vehicles. The system can actively blend images from multiple spectral bands for clarity and interpretability, provide remote identification of objects and material, provide anomaly detection, control lasers and opto-mechanics for image quality, and use shared aperture using folded optics.

Abstract: A coupling interface arrangement is described for a photonic integrated circuit (PIC) device. The PIC includes an interface coupling surface having optical grating elements arranged to form optical output locations that produce corresponding light output beams. A coupling lens couples the light output beams into a conjugate plane at a far-field scene characterized by one or more optical aberrations that degrade optical resolution of the light outputs. The optical grating elements are configured to correct for the one or more optical aberrations.

Abstract: An optical assembly for three-dimensional image capture includes first and second optical channels that are fixed with respect to one another. Each channel is configured to direct light onto at least a portion of an image sensor. The first and second optical channels each include an aperture for receiving the light, an objective lens for focusing the light into an intermediate image on an intermediate image plane, and an eyepiece lens for collimating the intermediate image.

Abstract: A folded optical system includes a powered optical element, at least one folding mirror and an aperture and defines an optical path through the optical system. The powered optical element, the at least one folding mirror and the aperture are configured to fold the optical path at the aperture, thereby providing a compact optical system. The optical system may include an optical block that totally internally reflects the optical signal at the aperture. Optionally or alternatively, discrete optical components may be used, such as an aperture made of a conventional material or a metamaterial, an off-axis parabolic mirror or lens and one or more folding mirrors. Some embodiments include a wavelength dispersive element, so as to implement a spectrometer.

Abstract: A fundoscopy system comprises a fixture supporting optics configured to be mounted to a surface of a smartphone and align the optics with a pupil of a camera of the smartphone and to align a light guide with an illumination source of the smartphone. The light guide is configured to direct light from the illumination source into an eye of a subject disposed in front of the fixture. The fixture is further configured to direct light reflected from a retina of the eye through the optics and into the pupil of the camera of the smartphone.

Abstract: A digital camera optically couples a monocentric lens to image sensor arrays, without optical fibers, yet shields the image sensor arrays from stray light. In some digital cameras, baffles are disposed between an outer surface of a monocentric lens and each image sensor array to shield the image sensor arrays from stray light. In other such digital cameras, an opaque mask defines a set of apertures, one aperture per image sensor array, to limit the amount of stray light. Some digital cameras include both masks and baffles.

Abstract: A folded optical system includes a powered optical element, at least one folding mirror and an aperture and defines an optical path through the optical system. The powered optical element, the at least one folding mirror and the aperture are configured to fold the optical path at the aperture, thereby providing a compact optical system. The optical system may include an optical block that totally internally reflects the optical signal at the aperture. Optionally or alternatively, discrete optical components may be used, such as an aperture made of a conventional material or a metamaterial, an off-axis parabolic mirror or lens and one or more folding mirrors. Some embodiments include a wavelength dispersive element, so as to implement a spectrometer.

Abstract: An optical assembly for three-dimensional image capture includes first and second optical channels that are fixed with respect to one another. Each channel is configured to direct light onto at least a portion of an image sensor. The first and second optical channels each include an aperture for receiving the light, an objective lens for focusing the light into an intermediate image on an intermediate image plane, and an eyepiece lens for collimating the intermediate image.

Abstract: An apparatus is disclosed including: an optical coherence tomographic system; a spinal needle having a needle tip adapted to penetrate tissue; and an optical delivery system adapted to direct probe light from the optical coherence tomographic system onto tissue located in front of the needle tip, collect test light backscattered from the tissue, and transmit the test light to the optical coherence tomographic system. The optical coherence tomographic system is adapted to provide information indicative of one or more properties of the tissue based on the test light.