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PSD (Positon Sensing Detector)
PSD (Position Sensitive Detector)
It is a semiconductor device based on the transverse photoelectric effect to detect the coordinate information of the center of gravity of the light spot
It has the advantages of high resolution, fast response and simple signal processing,
It is especially suitable for non-contact, high-precision and rapid measurement and collimation measurement of displacement, distance, angle and other physical quantities that can be indirectly converted into light point position or displacement.
At present, it has been widely used in online detection of displacement, size, surface state, vibration, eccentricity, clearance, stroke and other motion states of workpieces, three-dimensional pose detection in space, robot ranging (instead of ultrasonic vision sensor) and other aspects.
The products in this section are classified as "special detector", and NBTech is also classified as "Detector array", array products include products arranged by more than one light emitting unit or light receiving unit in a certain positional relationship.
Including one-dimensional/two-dimensional PSD, Dual PD, four quadrant and other products that realize "not single point" function.
Array products have ring array layout, linear array layout or area array layout...
Some products are customized according to customer requirements or specific applications and will not be open showed.
Dual PD
The dual PD consists of two highly sensitive photodiodes, with a variety of light receiving area ratios and packaging options.
With its unique layout structure and good photoelectric characteristics, it can be widely used in ranging, centering, offset measurement and other occasions.
■ Special Detector
Four quadrant photodetector is a photodetector composed of four photodiodes with identical performance arranged in four quadrants of rectangular coordinates.
The multi-element non imaging photodetectors widely used in photoelectric detection systems are mostly four quadrant photodetectors.
It includes silicon photocells of various specifications and four quadrant photodiodes of different types, such as four quadrant PIN photodiodes, four quadrant avalanche photodiodes, etc.
Four quadrant photodetector
Multi element equidistant linear Array
The "multi element linear array" in this category refers to array products with consistent performance and spacing of each element.
The product is named as "NPD + number of units + pitch".
Minimum spacing capacity: 10um+10um.
PD, P-Tr and APD can all be designed as equidistant arrays.
