Color control system for optical image apparatus
Color-sensitive photoelectric control system with fiber optics Patent #: 4045667
ApplicationNo. 06/043031 filed on 05/29/1979
US Classes:250/227.23, With spectral frequency/wavelength discrimination250/205Controlling light source intensity
ExaminersPrimary: Nelms, David C.
Attorney, Agent or Firm
International ClassesG01H 9/00 (20060101)
G01P 15/093 (20060101)
G01P 15/08 (20060101)
G01D 5/26 (20060101)
Foreign Application Priority Data1978-06-02 SE
AbstractThe invention relates to an optical measuring device for measuring physical magnitudes such as position, speed, acceleration, force, pressure, elongation, temperature, etc., comprising at least one optical fiber for conducting light between an electronic unit and a transducer forming an optical modulator which is directly or indirectly influenced by the quantity being measured and, in dependence thereon, modulates the light emitted to the transducer. The transducer contains at least one optical filter having spectrally varying absorbing and/or transmitting and/or reflecting characteristics within the spectra of the emitted light. The light filter generates one or more stabilizing signals for the fiber optic and optoelectronics, and possibly one or more measurement signals within one or more wavelength ranges.