The present application discloses device and system embodiments that address mobile device integration considerations for various categories of UV sensors, including cameras, photodiodes, and chemical sensors. The UV sensors may use the functionalities of the existing in-built sensors in conventional mobile devices, and/or integrate additional components specific to UV sensing. By optimally positioning the sensors, UV sensing and other collateral functionalities (e.g., charging a photovoltaic cell integrated with the mobile device) can be realized in parallel.

A color measuring device includes a color difference meter module. The color difference meter module includes: a main detecting unit having an optical detecting unit configured to receive light introduced from an incident lens to generate a first current depending on a color, a first measuring unit configured to measure the first current, a sub-detecting unit having a dark detecting unit disposed adjacent to the main detecting unit and blocking the light to generate a second current in a dark state, a second measuring unit configured to measure the second current, a leakage measuring unit including a charging unit provided in the second measuring unit and charged with a predetermined set current, and measures a third current leaking from the charging unit, and a control unit that corrects the first current by reflecting the second current and the third current.

Provided is a semiconductor light detection device having a relatively high detection sensitivity to a light component of a specific wavelength. The semiconductor light detection device includes: a semiconductor light receiving element, in which a first conductive layer is formed on a surface of a semiconductor substrate, a second conductive layer is formed below the first conductive layer, a third conductive layer is formed below the second conductive layer, and a photocurrent based on the intensity of incident light is output from the third conductive layer while an input voltage is applied to the first conductive layer; and a semiconductor detection circuit configured to output an output voltage based on a current difference between a first photocurrent and a second photocurrent being output in response to the application of the first input voltage and the second input voltage, respectively.

The invention relates to a method for the sequential measurement of a plurality of semiconductor-based light sources such as LEDs, OLEDs or VCSELs, in particular comparatively low-luminosity light sources such as so-called micro-LEDs. The invention further relates to a device for carrying out the method. The object of the present invention is to provide a method that operates faster, more accurately and more sensitively than the known methods, which operate by scanning with a photodiode or with a spectrometer. The method according to the invention proposes for this that a current pulse is applied by means of a pulsed current source (1) to the low-luminosity light sources consecutively or simultaneously. The emitted light pulse of the LED (2) is converted into electric charge carriers by means of a photodiode (3), the electric charge carriers are added up by means of an integrator circuit (5), the added-together charge carriers are converted by means of an A/D converter (6) into a digital signal and the digital signal is forwarded to a measurement and control unit (7). The invention also relates to a method and a corresponding device for the sequential measurement of a plurality of optical pulses, wherein the pulsed light radiation enters an Ulbricht sphere (10) through an inlet opening (11), a first portion of the light radiation, which exits the Ulbricht sphere (10) following interaction with the same through a first outlet opening, is measured by means of a first detector (14, 18) and a second portion of the light radiation, which exits the Ulbricht sphere (10) without interaction with the same through a second outlet opening (19), is measured by means of a second detector (14′).

An ambient light detector, a detector array and a method are disclosed. An ambient light sensor includes a first plurality of sensor elements, where each sensor element is configured to provide a signal in response to a level of illumination and a second plurality of reference elements, each reference element configured to provide a reference signal and each including a blocking element configured to shield the respective reference element from being illuminated, where the first plurality is larger than the second plurality and the first plurality of sensor elements and the second plurality of reference elements are arranged in an array, and where a sensor element and a reference element are laterally arranged on or in a common layer substrate sharing at least one common first contact.

A system and method with AC coupling that reserves photodiode bandwidth in a biased configuration, allows optimal transimpedance amplifier performance, retains DC signal measurement capability, and does not introduce noise into the balanced detection signal.

A system for compensating for photodiode errors includes a live photodiode configured to be exposed to a light source and to output a live signal. The system further includes a reference photodiode located proximate to the live photodiode and configured to be isolated from the light source and to output a reference signal. The system further includes a controller configured to generate a compensated output signal by subtracting the reference signal from the live signal.

A photoelectric detection circuit, a photoelectric detection device and an electronic device. The photoelectric detection circuit includes a first detection sub-circuit configured to be exposed to the environment of light to be detected and having an equivalent resistance that varies with the variation of illumination intensity of the light to be detected in the environment; and a second detection sub-circuit configured to be in a state of fixed illumination intensity and having an equivalent resistance that is constant due to the fixed illumination intensity. The first detection sub-circuit is connected in series with the second detection sub-circuit via a first node N1 and the signal output lead Vout is electrically connected with the first node N1 to output detected electrical signals.

According to an aspect of the present disclosure, a detection device includes: a substrate; a plurality of first optical sensors provided in a detection area of the substrate and comprising an organic material layer having a photovoltaic effect; and at least one or more second optical sensors provided on the substrate and comprising an inorganic material layer having a photovoltaic effect.

A light sensing panel includes a substrate, at least one readout line, at least one scan line, and at least one pixel unit. The substrate has an array region and a peripheral region. The readout line and the scan line extend at least over the array region of the substrate. The pixel unit is over the array region of the substrate and electrically connected to the readout line and the scan line. The pixel unit at least includes a sensing switch device, a light sensing device, and a reference light sensing device. A first terminal of the sensing switch device is connected to the readout line. The light sensing device is connected between a second terminal of the sensing switch device and a voltage source. The reference light sensing device is connected between the second terminal of the sensing switch device and a grounded source.