An important part of an optical system is to convert light to a signal that then can be analyzed or stored. Examples of light detectors are
• Cone and rod cells in the retina in the human eye
• Optical recording materials, such as silver halide film used in analog photography
• Photodiodes used as optical receivers in fiber-optic communication systems
• A linear detector array used in a fax machine or a paper scanner
• A two-dimensional detector array used in a digital camera
The basic principles of using a photon detector involve detection of light and converting the light intensity signal to current or voltage via an amplifier.
In a detector array a number of methods are used to convert the light intensity distribution ...
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