Terminology

Blue Shift

Blue Shift is the phenomenon where the spectral response of a thin-film optical filter shifts toward shorter wavelengths (the "blue" end of the spectrum) as the Angle of Incidence (AOI)...

Clear Aperture (CA)

Clear Aperture (CA) is the central area of an optical component (such as a lens, mirror, filter, or window) where the manufacturer guarantees the optical specifications will be met. It...

Cone Half-Angle (CHA)

Cone Half-Angle (CHA) is the maximum angle formed between the optical axis and the marginal ray (the outermost ray) of a converging or diverging cone of light. It defines the...

Metal Halide Lamp

A Metal Halide Lamp is a type of high-intensity discharge (HID) gas discharge lamp that generates light by passing an electric arc through a mixture of vaporized mercury and metal...

Fluorescence Filter Set

A Fluorescence Filter Set is an optical assembly consisting of three specific filters - an Excitation Filter, a Dichroic Mirror, and an Emission Filter—mounted together within a microscope. Its primary...

Xenon Arc Lamp

A Xenon Arc Lamp is a specialized High-Intensity Discharge (HID) light source. It produces extremely bright, white light by passing a high-current electric arc through ionized xenon gas under high...