SPECTROSCOPE FOR TAKING-OUT SYNTHETIC LIGHT HAVING OPTIONAL SPECTRAL DISTRIBUTION AND METHOD FOR DESIGNING SHAPE OF OPTICAL MASK TO BE USED IN THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a spectroscope capable of taking out synthetic light having an optional spectrum distribution in stead of an optical filter which is difficult to manufacture while needing much time and cost. SOLUTION: The spectroscope capable of making the optional distribution of wave length energy performance of the collectively synthesized light to a second output slit is constituted as follows: diffraction constants d1and d2of a first diffraction grating, and the second diffraction grating are set to the same value; the second diffraction grating is arranged at least so as to equate the output angleβ1of the spectrum light from the first diffraction grating with an incident spectrum light angle i2; the light mask storage part is provided, in stead of the first output slit and the second diffraction incident slit; the intermediate slit part is provided in which the a optical mask storage part is provided for inserting the optical mask for optionally restricting the light transmittance for each wave length of the spectrum light; the area or the height of the optical mask at the position where each wave length of the light passes through is formed in the shape proportional to the light transmittance. COPYRIGHT: (C)2006,JPO&NCIPI