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BC20 Photodiode Sensor

Updated:2025-03-13

Brand: OPHIR
Model: BC20
Description: The BC20 is a photodiode sensor for measuring scanned or intermittent beams such as bar code scanners. It has a swivel mount and a 10x10mm aperture. It covers the spectral range 400-1100nm and its pow
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Product Details

Overview of BC20 photodiode sensor:

The BC20 is a photodiode sensor for measuring scanned or intermittent beams such as bar code scanners. It has a swivel mount and a 10x10mm aperture. It covers the spectral range 400-1100nm and its power measuring range is 0.1mW - 20mW. The sensor comes with a 1.5 meter cable for connecting to a meter or PC interface.

BC20 Sensor Drawing：

Main parameters:

Aperture	10x10mm
Spectral Range	400-1100nm
Power Range	0.1mW-20mW
Dimensions	118 L x 10 W x 18 D (mm)
Max Average Power Density	50W/cm2
Max Average Power	20mW

Problem summary:

How does BC20 measure the true power of the scanning beam?

The BC20 has a peak measurement and hold circuit to measure the peak power on the detector and hold it. When the beam is on the detector, it rises to a peak value, which corresponds to the same power that the detector will measure whether the beam is stationary or not. Therefore, BC20 will read the correct power no matter whether the beam is scanned or not.

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