A system comprising a display and an ambient light sensing module, the ambient light sensing module being located beneath the display. The display comprises an array of light emitting diodes and a first polarizer located above the display. The sensing module comprises a first sensor and a second sensor, a second polarizer being located above the second sensor.

A foldable mobile electronic device is provided. The foldable mobile electronic device includes a processor configured to recognize, based on the data received from the first sensor, a change in a state of the foldable mobile electronic device from the folded state to a partially folded state before reaching an unfolded state, to identify a first illuminance by using the data received from the second sensor, based on the recognized state change, to set a first luminance corresponding to the first illuminance as a brightness of the display, to when an angle identified after the state change falls within a predetermined first angle range or when a specific time has not elapsed after the state change, perform a real-time adjustment operation on the brightness of the display, based on a second illuminance identified using the second sensor, and to when the angle identified after the state change is outside the first angle range or when the specific time has elapsed after the state change, perform a hysteresis adjustment operation on the brightness of the display, based on the first illuminance.

A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.

A system (5) for quantifying a colour change in a colorimetric indicator (15), the system (5) comprises an image capture device (22) configured to acquire an image of an object (10) comprising the colorimetric indicator (15); and a processing device (20) configured to compare the acquired image to reference data (30) associated with the colourimetric indicator (15), and generate a quantitative output (28) associated with the acquired image.

The present disclosure includes an electronic device and a method thereof. The electronic device includes a display, an ambient light sensor, and at least one processor, operatively connected to the display and the ambient light sensor. The at least one processor is configured to detect, by using the ambient light sensor, ambient light of the electronic device during a first duration in a state in which the display is turned off, identify a setting for being used for the ambient light sensor, based at least in part on a characteristic of the ambient light, detect, by using the ambient light sensor, ambient light of the electronic device during a second duration based at least in part on the identified setting, and control a function of the display, based at least in part on the characteristic of the ambient light detected during the second duration.

An example electronic device includes: a housing: a display including a plurality of signal lines; an optical sensor module including first and second light emitting elements respectively overlapping first and second signal lines, and a light receiving element configured to collect light from the first and/or second light emitting elements that is reflected and received from an external object; and a processor. The processor is configured to control the first light emitting element based on an off-time point of time of the first signal line corresponding to brightness of the display such that the first light emitting element emits light at a first light-emitting point of time, and to control the second light emitting element based on a time difference between off-time points of time of the first and second signal lines such that the second light emitting element emits light at a second light-emitting point of time.

A method includes sensing data indicative of a plurality of wavelengths of light utilizing one or more sensors forming a part of a sensor ring, storing the data on a memory device forming a part of the sensor ring, transmitting the data to a computing device external to the ring and receiving a photic environmental model from the computing device the photic environmental model based, at least in part, on the data.

Provided is a laser scattered light measuring device capable of easily confirming the safety of laser scattered light to a human body. The laser scattered light measuring device includes a light receiving unit, a calculation unit, and a display unit. The light receiving unit receives laser scattered light generated by irradiating an object with laser light and detects intensity of the laser scattered light. The calculation unit compares the intensity of the laser scattered light received by the light receiving unit with a predetermined threshold value and calculates a degree of risk of the laser scattered light to a human body based on a comparison result. The display unit displays the degree of risk calculated by the calculation unit.

Systems and methods for optical imaging are disclosed. An optical sensor for imaging a biometric input object on a sensing region includes a transparent layer having a first side and a second side opposite the first side; a set of apertures disposed above the first side of the transparent layer; a first set of reflective surfaces disposed below the second side of the transparent layer configured to receive light transmitted through the first set of apertures and to reflect the received light; a second set of reflective surfaces disposed above the first side of the transparent layer configured to receive the light reflected from the first set of reflective surfaces and to further reflect the light; and a plurality of detector elements positioned to receive the further reflected light from the second set of reflective surfaces.

Method, product and blocking element of short wavelengths in LED-type light sources consisting of a substrate with a pigment distributed on its surface and, in that said pigment has an optical density such that it allows the selective absorption of short wavelengths between 380 nm and 500 nm in a range between 1 and 99%.