väriäityskäyrä

Väriäityskäyrä, often translated as spectral curve or color response curve, is a graphical representation of how a sensor, detector, or material responds to different wavelengths of light. It illustrates the sensitivity or output of the device across the visible spectrum and potentially beyond into the ultraviolet and infrared regions. The horizontal axis typically represents the wavelength of light, usually measured in nanometers (nm), while the vertical axis denotes the corresponding response, which could be in units of intensity, quantum efficiency, or a normalized value.

Understanding a väriäityskäyrä is crucial in fields such as photography, remote sensing, colorimetry, and material science. For cameras, it shows which colors are captured most effectively. In spectroscopy, it helps identify substances by their unique absorption or emission spectra, which are essentially specific väriäityskäyrät. Different types of sensors will have distinct väriäityskäyrät based on their physical properties and intended applications. For instance, a sensor designed for detecting infrared radiation will have a peak response in the infrared region, whereas a sensor for visible light will show a different pattern. Analyzing these curves allows for calibration, comparison, and optimization of optical systems.