Title:
INFRARED-RAY DATA COMMUNICATION MODULE
Document Type and Number:
Japanese Patent JP3900606
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a low-priced microminiature and thin type infrared-ray data communication module of low power consumption having a high output light-emitting element by a method, wherein the upper surface of a light-emitting element and a light-receiving element are positioned on the outer circumference of semispherical lens parts, the circumference of the semispherical lens parts in surrounded by the reflection surface of the reflection member, and the infrared rays, emitted from the light-emitting element, are projected effectively and condensed on the light-emitting element.
SOLUTION: Electronic components such as a light-emitting element 3, a light-receiving element 4, an IC chip, etc., are mounted on a circuit board 7. An inverted cone-shaped reflection surface 12b is provided in the vicinity of the inner edge part of a through-hole 12a of a shield case 12, which covers the main body of a module using an infrared-ray data communication module 11 to be sealed by light-transmitting resin 6, in such a manner that the upper surface of the light-emitting element 3 and the light-receiving element 4 are covered by semispherical lenses 6a and 6b, and the reflecting thin films 12c such as an Ni-plated layers, etc., are formed on the surface of the reflecting surfaces 12b. A wasteful light, which spreads to the left and the right sides of the light-emitting element 4, is made to be irradiated, the light of the outer circumference of the lens is condensed by the light-receiving element 4, the area of light-receiving part becomes wider, and the light-receiving and light-emitting sensitivity are enhanced. As a result, a small, thin type and low-power consuming domestic appliance for high speed and long distance operation can be attained.
Inventors:
Harumi Watanabe
Hirohiko Ishii
Tsuyoshi Miura
Shin Shimozawa
Junichi Watanabe
Hirohiko Ishii
Tsuyoshi Miura
Shin Shimozawa
Junichi Watanabe
Application Number:
JP20735897A
Publication Date:
April 04, 2007
Filing Date:
July 17, 1997
Export Citation:
Assignee:
Citizen Electronics Co., Ltd.
International Classes:
H01L31/10; H01L33/00; H01L33/48; H01L33/56; H01L33/58; H01L33/60; H04B10/116; H04B10/40; H04B10/50; H04B10/60; (IPC1-7): H01L33/00; H01L31/10; //H04B10/28; H04B10/02
Domestic Patent References:
| JP61043487A | ||||
| JP8204653A | ||||
| JP7231120A | ||||
| JP7235696A | ||||
| JP60088646U | ||||
| JP9097928A |
Attorney, Agent or Firm:
Gojong Hiroaki