An optical sensor module and a packaging method thereof are disclosed, wherein the optical sensor module comprises a substrate having a light sensing element; and a housing made of a transparent material. The housing is connected to the substrate and covers the light sensing element. The housing has a light-receiving area facing the light sensing element, and the inner surface of the housing toward the substrate is provided with a light-shielding coating in a portion outside of the light-receiving area. In this way, optical components such as the light sensor can be effectively protected, and still retain the effect of avoiding noise light interference with the light sensor module.

An apparatus includes a photodetector configured to generate an electrical current based on received illumination. The apparatus also includes an integration capacitor configured to integrate the electrical current and generate an integrator voltage. The apparatus further includes an amplifier configured to control a transistor switch coupled in series between the photodetector and the integration capacitor. The apparatus also includes an event detector configured to sense a high-energy event affecting the photodetector. In addition, the apparatus includes a switchable clamp coupled across inputs of the amplifier, where the event detector is configured to close the switchable clamp in response to sensing the high-energy event.

Method and disinfection system for disinfecting a closed space or surface including light fixtures fixedly positioned at predefined locations in a closed space. The disinfection system includes a UV emitter module positioned over a robotic system. The light fixtures and the UV emitter module emit ultraviolet C (UVC) light for disinfecting the closed space or a surface in the closed space. The disinfection system includes sensors for measuring the amount of UVC light delivered by the light sources and UV emitter module. The disinfection system includes a control system for determining a profile for the closed space or surface based on the amount of UVC light needed and corresponding time to disinfect. The control system communicatively connects to the sensors. The control system monitors the amount of UVC light and controls the operation of the light sources and UV emitter module to deliver the required amount of UVC light.

Aspects of embodiments pertain to a sensing systems configured to receive scene electromagnetic (EM) radiation comprising a first wavelength (WL1) range and a second wavelength (WL2) range. The sensing system comprises at least one spectral filter configured to filter the received scene EM radiation to obtain EM radiation in the WL1 range and the WL2 ranges; and a self-adaptive electromagnetic (EM) energy attenuating structure. The self-adaptive EM energy attenuating structure may comprise material that includes nanosized particles which are configured such that high intensity EM radiation at the WL1 range incident onto a portion of the self-adaptive EM energy attenuating structure causes interband excitation of one or more electron-hole pairs, thereby enabling intraband transition in the portion of the self-adaptive EM energy attenuating structure by EM radiation in the WL2 range.

The invention relates to a light module including a laser source capable of emitting a coherent light beam of given wavelength, a first sensor capable of picking up a first light signal of a wavelength lying in a first band of wavelengths centered around the given wavelength and a second sensor capable of picking up a second light signal of a wavelength lying in a second band of wavelengths centered around a wavelength distinct from the given wavelength. In particular, the light module includes a detection module capable of comparing at least one value that is a function of the signals to a threshold value and of commanding the stopping of the laser source as a function of the comparison.

A water discharge apparatus including a water discharger, a water supply path, an opening/closing valve, a photoelectric sensor, and a controller, the photoelectric sensor projects detection light, receives a reflected light of the detection light, and outputs a received signal corresponding to a light reception amount of the reflected light, the controller detects an existence or absence of an object based on the received signal and controls opening and closing of the opening/closing valve according to a detection result of the object, the photoelectric sensor includes a sensor main body and a conductive member, the sensor main body includes a light-projecting element and a light receiving element, and the conductive member covers a front of the light receiving element, is formed in a sheet configuration, is light-transmissive, is conductive, and is electrically connected to a reference potential of the sensor main body.

Techniques for shielding an optical sensor are described. An example of an electronic device includes an optical sensor and a combined light-focusing and electrical-shielding unit disposed over the optical sensor. The light-focusing and electrical-shielding unit has two portions. The first portion gathers light and focuses the light on the electrical sensor. The second portion encloses sides of the first portion and is coated with an electrically conductive material to shield the optical sensor from electromagnetic interference.

Optical apparatus includes a primary radiation source, which emits first optical radiation along a first optical axis. A DOE includes at least an entrance surface, upon which the first optical radiation from the primary radiation source is incident, and an exit surface, through which one or more primary diffraction orders of the first optical radiation are emitted from the DOE. At least one secondary radiation source is configured to direct second optical radiation to impinge on the DOE along a second optical axis, which is non-parallel to the first optical axis, causing at least a part of the second optical radiation to be diffracted by the DOE such that one or more secondary diffraction orders of the second optical radiation are emitted through the entrance face of the DOE. At least one detector is configured to sense at least one of the secondary diffraction orders of the second optical radiation.

A protective device for an imager which is contained within a housing and in which the imager is aligned with an opening in the housing. The protective device includes a cover which overlies the housing opening and is manually detachably secured to the housing by three or more resilient clips. A plurality of openings are formed through the cover to enable operation of the imager.

Aspects and examples described herein provide a lightweight radiation shielding structure for infrared cameras. In one example, a top radiation shielding element and a bottom radiation shielding element are placed as close as possible to an infrared detector to minimize excess weight added to the infrared camera while providing optimal radiation shielding. Such aspects and examples provide important functionality for numerous weight-sensitive applications in high-radiation environments.