Title:
OPTICAL WIRELESS RECEIVER
Document Type and Number:
Japanese Patent JPH02242126
Kind Code:
A
Abstract:
PURPOSE:To facilitate assembling work with a simple adjustment for obtaining a desired light receiving performance by mounting an auxiliary lens for a wider angle of a light receiving range integral on the front of a photo detector of a light receiving module. CONSTITUTION:An auxiliary lens 4 is provided between a lens for gathering light of an optical wireless transmitter. It is also so arranged that light near a limit point of a light receiving range, for example, light near 85 deg. in angle of incidence can enter into the photo detector 3. In this manner, as the auxiliary lens 4 for a wider angle of the light receiving range is mounted integral on the front of the photo detector 3 of a light receiving module 2, adjustment for obtaining a desired photosensing performance can be simplified. Simplification of assembling work is also possible.
Inventors:
HARADA TAKAO
MASUDA TOSHIYUKI
MASUDA TOSHIYUKI
Application Number:
JP6310289A
Publication Date:
September 26, 1990
Filing Date:
March 15, 1989
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G01J1/04; G01J1/02; G02B3/00; H04B10/11; (IPC1-7): G01J1/04; G02B3/00; H04B10/10; H04B10/22
Attorney, Agent or Firm:
Ishida Choshichi