Abstract: An optical module includes: an avalanche photodiode; a power supply terminal; a self bias resistor connected between a cathode of the avalanche photodiode and the power supply terminal; a grounding terminal; and a surge preventing Zener diode having a cathode connected to a connection point between the power supply terminal and the self-bias resistor and an anode directly connected to the grounding terminal.

Abstract: One embodiment of the invention relates to a system for operating a plurality of streetlights in response to motion from a vehicle. The system includes a sensor associated with at least one of the streetlights and configured to detect the presence of a moving vehicle and to provide a signal representative of the moving vehicle. The system further includes a radio frequency transceiver associated with each of the streetlights. The system yet further includes processing electronics configured to receive the signal representative of the moving vehicle from the sensor and to cause the radio frequency transceiver to transmit a command to one or more of the plurality of the streetlights to change lighting states along a pathway for the vehicle.

Abstract: An optical filter, a sensor device including the optical filter, and a method of fabricating the optical filter are provided. The optical filter includes one or more dielectric layers and one or more metal layers stacked in alternation. The metal layers are intrinsically protected by the dielectric layers. In particular, the metal layers have tapered edges that are protectively covered by one or more of the dielectric layers.

Abstract: A solid-state imaging device includes: plural photodiodes formed in different depths in a unit pixel area of a substrate; and plural vertical transistors formed in the depth direction from one face side of the substrate so that gate portions for reading signal charges obtained by photoelectric conversion in the plural photodiodes are formed in depths corresponding to the respective photodiodes.

Abstract: A focusing EBCCD includes a control device positioned between a photocathode and a CCD. The control device has a plurality of holes therein, wherein the plurality of holes are formed perpendicular to a surface of the photocathode, and wherein a pattern of the plurality of holes is aligned with a pattern of pixels in the CCD. Each hole is surrounded by at least one first electrode, which is formed on a surface of the control device facing the photocathode. The control device may include a plurality of ridges between the holes. The control device may be separated from the photocathode by approximately half a shorter dimension of a CCD pixel or less. A plurality of first electrodes may be provided, wherein each first electrode surrounds a given hole and is separated from the given hole by a gap.

Abstract: A method of obtaining or maintaining optical transference into deaerated liquid in contact with a light transference medium is disclosed. The method comprises applying ultrasonic energy at a wavelength (?) into deaerated liquid in contact with a light transference medium. The ultrasonic energy at wavelength (?) originates at a distance (d) from an optical signal transmitted into the light transference medium. The distance (d) may be defined by a formula based on the wavelength (?) of the ultrasonic energy.

Abstract: One embodiment of the invention relates to an outdoor lighting fixture that includes a ballast for controlling the amount of current provided to a lamp. The lighting fixture also includes a fixture housing at least partially surrounding the ballast and the lamp and a mounting system for holding the fixture housing to at least one of a wall and a pole. The lighting fixture yet further includes a camera coupled to the housing and a control circuit wired to the camera. The lighting fixture also includes a radio frequency transceiver wired to the control circuit. The control circuit is configured to cause information from the camera to be wirelessly transmitted by the radio frequency transceiver.

Abstract: A portable device for quantification of thermochromatic coating signatures is provided. The portable device includes a directing component configured to direct light to a target having a thermochromatic coating. Additionally, the portable device includes a conditioning component configured to condition reflected light from the target, the reflected light including thermochromatic coating signatures. The portable device also includes an image detector configured to generate images from the conditioned reflected light, and a processor configured to receive and analyze images from the image detector and identify at least one portion of the target that has exceeded a predefined temperature or predefined temperature variance based on the analyzed images.

Abstract: An image sensor comprising a plurality of pixels, each of at least part of the plurality of pixels comprises: a plurality of photoelectric conversion parts; a microlens; and a plurality of interlayer lenses formed between the plurality of photoelectric conversion parts and the microlens and integrally formed to correspond to the plurality of photoelectric conversion parts. The plurality of interlayer lenses cause light incident on the plurality of interlayer lenses to enter the corresponding plurality of photoelectric conversion parts.

Abstract: An illumination device comprises one or more emitter modules having improved thermal and electrical characteristics. According to one embodiment, each emitter module comprises a plurality of light emitting diodes (LEDs) configured for producing illumination for the illumination device, one or more photodetectors configured for detecting the illumination produced by the plurality of LEDs, a substrate upon which the plurality of LEDs and the one or more photodetectors are mounted, wherein the substrate is configured to provide a relatively high thermal impedance in the lateral direction, and a relatively low thermal impedance in the vertical direction, and a primary optics structure coupled to the substrate for encapsulating the plurality of LEDs and the one or more photodetectors within the primary optics structure.

Abstract: This invention is directed to attenuating a beam output without changing the beam position and the beam diameter. A high-output optical attenuator includes a first reflector that totally reflects incident light and causes first reflected light serving as reflected light of the incident light to enter a second reflecting portion, a second reflector that reflects the first reflected light and causes second reflected light serving as reflected light of the first reflected light to enter a third reflecting portion, a third reflector that reflects the second reflected light and causes third reflected light serving as reflected light of the second reflected light to enter a fourth reflecting portion, and a fourth reflector that reflects the third reflected light as fourth reflected light having the same optical axis as the optical axis of the incident light. At least two of the second reflector, the third reflector, and the fourth reflector are half mirrors.

Abstract: The optical fiber sensor device comprises a probe light supply unit, an optical fiber sensor unit, and a polarization state measuring unit. The probe light supply unit generates and outputs a polarization switched light beam by alternately switching a polarized CW light beam in polarization directions orthogonal to each other with elapse of time. The optical fiber sensor unit includes a loop-state optical fiber into which the polarization switched light beam is input and which outputs a light wave reflecting a change of birefringence according to a stress applied from an outside in the polarization switched light beam. The polarization state measuring unit observes polarization states of the respective light waves propagating clockwise and counterclockwise through the optical fiber.

Abstract: A motor may be configured to drive a drive shaft and an engagement member supported on the drive shaft. A detectable feature comprising a rotary member may be supported on the drive shaft such that movement of the drive shaft by the motor changes a state of the detectable feature. At least one sensor may be arranged to detect the state of the detectable feature. Circuitry may be configured to provide a signal in response to a change in the state of the detectable feature detected by the at least one sensor.

Abstract: The present disclosure provides an optical system. In one aspect, the optical system includes a plurality of imagers configured to emit an electromagnetic radiation, a plurality of optical sensors configured to receive the electromagnetic radiation from the imagers, and a beam splitting device disposed at an optical path between the imagers and the optical sensors. In one example, the beam splitting device is a multi-way beam splitter configured to receive the electromagnetic radiation from one of the imagers and separate the received electromagnetic radiation into a plurality of portions, each separated portion of the received electromagnetic radiation being directed to one of the optical sensors.

Abstract: The present application relates to vertically integrated assemblies including a MEMS-based optomechanical architecture. In some embodiments, the assembly includes a MEMS/optoelectronic module, an emitter module, and a detector module, where these modules are vertically integrated. Methods of fabricating such assemblies are also described herein.

Abstract: A heating package test apparatus and a method of operating the same are disclosed. In one aspect, the apparatus includes a plurality of heating package testers configured to i) measure temperatures of a plurality of divided regions included in a display device and ii) one or more characteristics of light output from the divided regions. Each of the heating package testers includes a heater configured to apply heat to a selected one of the divided regions of the display device, an optical window configured to receive the output light, a temperature measurement circuit configured to measure a temperature of the selected divided region of the display device based on the received light, and a brightness measurement circuit configured to measure a brightness change of the selected divided region based on the received light.

Abstract: An optical touch system includes two touch devices, two optical sensing devices, and a processing module. When the optical touch system is in use according to an optical touch method, the two touch device are used to touch a touch surface and emit first light and second light with different wavelengths respectively. The two optical sensing devices are disposed at the circumference of the touch surface and individually receive the first light and the second light to generate an optical sensing signal. The processing module receives the two optical sensing signals and determines a touch position on the touch surface for each touch device according to the two optical sensing signals. Therefore, the touching by each touch device is independent, so the optical touch system and the optical touch method can allow touch operations for different purposes to be performed simultaneously.

Abstract: An integrated optical device includes a photo-detector (such as germanium) optically coupled to an optical waveguide. This photo-detector is deposited on the optical waveguide, and an optical signal propagating in the optical waveguide may be evanescently coupled to the photo-detector. In order to increase the absorption length of the photo-detector, a mirror (such as a distributed Bragg reflection grating) is included in the optical waveguide near the end of the photo-detector. This mirror reflects the optical signal back toward the photo-detector, thereby increasing the absorption of the optical signal by the photo-detector. In addition, absorption may be reduced by using electrical contacts that are electrically coupled to the photo-detector at locations where the optical mode of the optical signal is largely in the underlying optical waveguide, and by using a fingered metal layer to couple to the electrical contacts.

Abstract: A device for detecting light includes at least one silicon photomultiplier (SiPM) having an array of a plurality of single-photon avalanche diodes (SPADs), the array being larger in area than an incident light. The device is configured so as to at least one of activate and analyze only the SPADs upon which a specific minimum intensity of light impinges.

Abstract: A system for continuously monitoring a laser beam includes a photodiode sensor mounted adjacent to a laser beam optical path. A laser beam optical path analysis module connected to the photodiode sensor and adapted to receive, analyze and report the sensor output from the photodiode sensor.