The response of a device or material to monochromatic light as a function of wavelength.
The response of a material as a function of wavelength to incident electromagnetic energy, particularly in terms of the measurable energy reflected from and emitted by the material.
The variation in sensitivity of a reading device to light of different wavelengths.
The measure of the ability to differentiate among wavelengths and characteristics emanating from a light source. The ability of a camera film to record various wavelengths (colors) of light.
A bar code verification term. The variation in sensitivity of a test surface to light of different wavelengths.
Using the example of the human eye, the spectral response curves map the wavelength of light against the fraction of light absorbed by each type of eye cone (red, green, and blue sensitive cones). It is the sensitivity of the eye or a device to different wavelengths of light.
The response of an image sensor to the various wavelengths of light. Human spectral sensitivity ranges from approximately 420 to 720 nanometres. In terms of colour, this is from bluish red-purple through to green, yellow, orange and red with the eye most sensitive to green and yellow. Vidicon tubes and CCD devices extend past this to the infra-red regions around 850nm. Newvicons have a good response in the ultra violet end of the spectrum.
A measure of a photodetector's resonse to a change in input wavelength.