Spectroscope apparatus and reaction apparatus using the same

An apparatus for controlling reaction which is accompanied by light emission, comprising:

• a reaction apparatus for generating a light emitting body;
• an optical guide for light from said light emitting body;
• a spectroscope apparatus for separating light from said optical guide into spectral components, said spectroscope apparatus including a first spectroscope, a second spectroscope coupled with said first spectroscope through an intermediate slit, and drive means, said first spectroscope being made up of a collimator system and a light dispersing optical system, said light dispersing optical system including a light dispersing grating and a first optical system for leading the dispersed light from said light dispersing grating to said intermediate slit, said collimator system converting light rays from said optical guide into parallel rays incident on said light dispersing grating, said second spectroscope being made up of a light mixing optical system and an image formation optical system for forming an image of mixed light from said light mixing optical system, said light mixing optical system including a light mixing grating and a second optical system for focusing light from said intermediate slit on said light mixing grating, said drive means driving said light dispersing optical system and said light mixing optical system so that said light dispersing optical system and said light mixing optical system are optically symmetrical with respect to said intermediate slit;
• a monitor for displaying an image, said image being formed of mixed light corresponding to that part of said spectral components which exists in one of different wavelength ranges;
• a memory for storing a plurality of reference images;
• and
• a controller for comparing a plurality of images corresponding to said wavelength ranges with the reference images read out of said memory, to control variable quantities concerning the state of said light emitting body so that at least one of said images agrees with a corresponding one of said reference images.