Title:
DETECTING DEVICE FOR INCIDENT POSITION OF LIGHT SPOT OR THE LIKE
Document Type and Number:
Japanese Patent JPS6355406
Kind Code:
A
Abstract:
PURPOSE:To detect an incident position of a light spot, etc., by a simpler constitution, by deriving a ratio of output of end parts of two thin wire members. CONSTITUTION:When a light spot S is made incident on the surface of a plate body 1, a fluorescent agent in the plate body 1 is excited by the light spot S and a fluorescence is generated in a random direction, and this fluorescence is propagated through the inside of the plate body 1 and reaches each end face 1a-1d. In this case, the light intensity of each end face 1a-1d increases or decreases in accordance with a distance to the light spot S. Subsequently, emitted fluorescences from the end faces 1a-1d are made incident on this wire members 2a-2d, respectively, and emitted in a random direction again by the fluorescent agent contained in the members 2a-2d, propagated through the inside of the members 2a-2d, and made incident on photoelectric transducers 3a, 3a'-3d' which have been placed at both its end parts. Accordingly, by deriving a ratio of the sum of outputs of the photoelectric transducers 3a, 3a', and the sum of outputs of the photoelectric transducers 3c, 3c', a position of the light spot S in the X direction can be derived.
Inventors:
TAWARA TAKAO
AKETO JUN
IWASHITA YOSHIYUKI
AKETO JUN
IWASHITA YOSHIYUKI
Application Number:
JP19985786A
Publication Date:
March 09, 1988
Filing Date:
August 26, 1986
Export Citation:
Assignee:
OPTO ELECTRON KK
AKETO JUN
AKETO JUN
International Classes:
G01B11/00; G01C15/00; (IPC1-7): G01B11/00; G01C15/00
Attorney, Agent or Firm:
Hibiya Masahiko