A non-invasive optical internal substance detector includes: a diode array including a plurality of light emitting diodes (LEDs) for emitting light toward a target where an internal substance is detected, and a plurality of photodiodes (PDs) for receiving light which is reflected from the target after being emitted from the plurality of light emitting diodes; and a controller for controlling the plurality of light emitting diodes to be turned on or off and for processing a signal obtained from the photodiodes. The plurality of light emitting diodes and the plurality of photodiodes each have a size of several micrometers to several tens of micrometers and are arranged at intervals of several micrometers to several tens of micrometers from each other.

A first light guide guides first light in a first light guiding path. The first light is of light irradiated from the light source to a sheet. A first detection unit receives reflected light from the sheet and outputs an image signal indicating an image of a surface of the sheet. A second light guide guides second light in a second light guiding path different from the first light guiding path. The second light is of the light irradiated from the light source and is different from the first light. A second detection unit receives the second light and output a detection signal corresponding to a light amount of the second light. A control unit controls a light emission amount of the light source based on the detection signal.

A method of making an integrated depth sensor window lens, such as for an augmented reality (AR) head set, the depth sensor window lens comprising a sensor lens and an illuminator lens separated by an opaque dam. The method uses a two-shot injection molding process, a first shot comprising an optically clear polymeric material to form the sensor lens and the illuminator lens and the second shot comprising an opaque polymeric material to form the separator of the two.

A light reflecting member has a mirror face adapted to reflect incident light. A first arm member and a second arm member are bonded to the light reflecting member. A first actuator and a second actuator are configured to cause the first arm member and the second arm member respectively to displace in a direction intersecting the mirror face to change an angle of the mirror face relative to the incident light. A thermal expansion coefficient of a material forming the light reflecting member is smaller than a thermal expansion coefficient of a material forming each of the first arm member and the second arm member.

A multispectral harmonisation device intended to align the optical channels of an optronic system that includes at least two directional optical sources emitting respective optical beams of various wavelengths belonging to various spectral bands and comprises a parabolic mirror and means for positioning and orienting each of the optical sources so that each of the optical beams emitted by the optical sources passes through the optical focus of the parabolic mirror before being reflected by said parabolic mirror so that all the optical beams form, by reflection on the parabolic mirror, a multispectral collimated beam.

A first light guide guides first light in a first light guiding path. The first light is of light irradiated from the light source to a sheet. A first detection unit receives reflected light from the sheet and outputs an image signal indicating an image of a surface of the sheet. A second light guide guides second light in a second light guiding path different from the first light guiding path. The second light is of the light irradiated from the light source and is different from the first light. A second detection unit receives the second light and output a detection signal corresponding to a light amount of the second light. A control unit controls a light emission amount of the light source based on the detection signal.

A laser radar includes: a base member; a drive part configured to rotate the base member about a rotation axis; and a plurality of optical units arranged on the base member at a predetermined interval in a circumferential direction about the rotation axis and each configured to project laser light in a direction away from the rotation axis. Here, projection directions of the laser lights from the plurality of optical units are different from each other in a direction parallel to the rotation axis.

A laser module includes: a laser diode bar including a plurality of emitters configured to emit laser light from a front surface and leak light from a rear surface; a housing including a reflecting surface configured to surround a space together with the laser diode bar and reflect, toward the space, light leaked from the rear surface, in a scattering manner; and a detector configured to detect light reflected by the reflecting surface. A laser module includes: a laser diode bar including a plurality of emitters configured to emit laser light from a front surface and leak light from a rear surface; a condenser lens on which light leaked from rear surfaces of all of the plurality of emitters impinges; and a detector configured to detect light transmitted through the condenser lens.

An optoelectronic device, e.g. of a photocell or light barrier, comprising an electrical-to-optical or optical-to-electrical transducer, and an optical tube assembly comprising an optical chamber, a first aperture proximal with respect to the transducer, and a second, distal aperture being formed in chamber wall. In at least one first half-section taken e.g. along optical axis, at least an intermediate portion of the chamber wall extending between a first and a second line has a local tangent at each point (P) oriented so that any stray light ray incoming from the boundary point of the first aperture in the opposite half-section would be so deviated at that point (P) as to impinge upon the chamber wall at an impingement point (Q) in said first halfsection and more distal than the distal line.

A multispectral harmonisation device intended to align the optical channels of an optronic system that includes at least two directional optical sources emitting respective optical beams of various wavelengths belonging to various spectral bands and comprises a parabolic mirror and means for positioning and orienting each of the optical sources so that each of the optical beams emitted by the optical sources passes through the optical focus of the parabolic mirror before being reflected by said parabolic mirror so that all the optical beams form, by reflection on the parabolic mirror, a multispectral collimated beam.