Patent ID: 7538877

Claim:
A method for measuring the spectral characteristics of a light source comprising a plurality of wavelengths, the method comprising the steps of: positioning an optical detector to receive the light from the light source; positioning an optical filter between the light source and the optical detector, the optical filter comprising a plurality of filter elements, each of the plurality of filter elements to filter at least one of the plurality of wavelengths; moving the optical filter at a constant rate between the light source and the optical detector such that each of the plurality of filter elements is exposed to the light source, wherein the constant rate is such that a maximized optical response is achieved for at least one of the plurality of filter elements; varying the constant rate to achieve a plurality of constant rates at which the optical filter is moved between the light source and the optical detector, wherein each of the plurality of constant rates is such that a maximized optical response is achieved for at least one of the plurality of filter element; and measuring the spectral characteristics of the light source for each of the plurality of filter elements at each of the plurality of constant rates.