There is provided a module package including a substrate, a photo sensor chip, a molded transparent layer and a glass filter. The substrate has an upper surface. The photo sensor chip is attached to the upper surface of the substrate and electrically connected to the substrate. The molded transparent layer covers the photo sensor chip and a part of the upper surface of the substrate, wherein a top surface of the molded transparent layer is formed with a receptacle opposite to the photo sensor chip. The glass filter is accommodated in the receptacle.

Flexible and shockproof electrochemical cells for simultaneously detecting infrared and ultraviolet irradiation are provided. The electrochemical sensors comprise a flexible electrolyte comprising an orange dye suspended in a gel.

Flexible and shockproof electrochemical cells for simultaneously detecting infrared and ultraviolet irradiation are provided. The electrochemical sensors comprise a flexible electrolyte comprising an orange dye suspended in a gel.

A device allowing the angular emission pattern of a source to be measured without mechanical movement comprises, in succession, along its optical axis: a first objective, called the Fourier objective, arranged to form a Fourier surface each point of which corresponds to one direction of observation of the object; a diffuser used in transmission and placed on the Fourier surface; a substance of optical density placed upstream of the diffuser and arranged to attenuate the light backscattered toward the Fourier objective and the areal source; and a video photometer located downstream of the plane of the diffuser and arranged to image the surface of the diffuser.

Various embodiments provide a wellness tracking device with a base plate that may be utilized as a combination electrode by a variety of sensors. The base plate may be a multi-material electrode that includes a conductor and a transparent or semi-transparent material to enable optical sensing. In certain embodiments, the base plate supports a plurality of different sensors, which may selectively utilize the base plate as an electrode.

An optical sensing circuit and an optical sensing method are provided. The optical sensing circuit includes a first photosensitive unit, a second photosensitive unit, an arithmetic unit, and a control unit. The first photosensitive unit and the second photosensitive unit provide a sensing current during a light sensing period. The arithmetic unit generates a combined current according to the sensing current during the light sensing period. The control unit generates a first sensed value and a second sensed value according to the combined current.

Methods and apparatus for using an indicator window of a handheld scanner as a trigger are disclosed herein. An example handheld scanner includes: a housing; an image sensor to capture image data through a front-facing opening; an indicia decoder; an indicator window positioned to face generally away from the front-facing opening and toward a user when the handheld scanner is in a handheld position; a light source disposed inside the housing to emit indication light through the window to provide an indication; a light detector disposed inside the housing and positioned to detect a reflection of the indication light received from an object positioned in front of or on the window outside the housing; and a processor configured to control a mode of the handheld scanner and/or a device in communication with the handheld scanner in response to the light detector detecting the reflection of the emitted indication light.

An optical lens assembly is adapted for receiving a light beam that is emitted by an object, and includes a lens unit and a sleeve unit. The lens unit includes a casing that has a light-incident side adapted for receiving the light beam. The sleeve unit surrounds the light-incident side of the casing, and defines a light-receiving space that is adapted for the light beam to pass through so that propagation of the light beam is unaffected by disturbance caused by movement of air. An optical measurement method includes steps of: a) providing a lens unit, a sleeve unit, and an object that is for emitting a light beam; and b) operating the lens unit so that the light beam is received by the lens unit.

A system for determining the profile of a laser beam includes a detector having a thermochromic liquid crystal film (TLCF) in thermal communication with a heat spreader and a thermoelectric cooler. The liquid crystal film has a thermochromic response such that heating of the film by a received laser beam creates a detectable color response at the film. The system also includes an image sensor and a controller configured to output an operating current for the TEC and receive images from the sensor. The system can selectively vary the temperature set point of the TEC to change the steady state temperature of the TLCF to examine the full intensity profile of the received beam even when the temperature response bandwidth of the TLCF is too narrow to display the full beam profile in a single color spot.

Provided a semiconductor light detection element including: a semiconductor portion having a front surface including a light reception region that receives incident light and photoelectrically converting the incident light incident on the light reception region; a metal portion provided on the front surface; and a carbon nanotube film provided on the light reception region and formed by depositing a plurality of carbon nanotubes. The carbon nanotube film extends over an upper surface of the metal portion from an upper surface of the light reception region.