JPS5776514A - Optical device - Google Patents

Optical device

Info

Publication number
JPS5776514A
JPS5776514A JP55152503A JP15250380A JPS5776514A JP S5776514 A JPS5776514 A JP S5776514A JP 55152503 A JP55152503 A JP 55152503A JP 15250380 A JP15250380 A JP 15250380A JP S5776514 A JPS5776514 A JP S5776514A
Authority
JP
Japan
Prior art keywords
full
angle
reflection
made incident
optical axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP55152503A
Other languages
Japanese (ja)
Inventor
Osamu Hasegawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55152503A priority Critical patent/JPS5776514A/en
Publication of JPS5776514A publication Critical patent/JPS5776514A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

PURPOSE:To improve the directivity of a light source, by arranging the light source so that the emitted light is made incident to the edge face of a hollow and columnar transparent matter. CONSTITUTION:The beam made incident to a hollow part through an edge face formed into a rotary hyperboloid or a spherical surface is radiated directly or after a full-reflection on the inner surface through a pipe in the same angle as the angle of radiation of a light emitting diode 6. In the case of a material having a 1.5 refractive index, the beam made incident with 5 deg. to the optical axis has a >=60% full- reflection. The full-reflection quantity increases as the angle decreases. The optical path having a >=psim radiation angle causes refraction by a curved surface and becomes parallel to the optical axis. A rotary hyperboloid is ideal for the curved surface, but a spherical surface is also available if some problem of production arises although some inferiority in its characteristics may be caused.
JP55152503A 1980-10-30 1980-10-30 Optical device Pending JPS5776514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55152503A JPS5776514A (en) 1980-10-30 1980-10-30 Optical device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55152503A JPS5776514A (en) 1980-10-30 1980-10-30 Optical device

Publications (1)

Publication Number Publication Date
JPS5776514A true JPS5776514A (en) 1982-05-13

Family

ID=15541879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55152503A Pending JPS5776514A (en) 1980-10-30 1980-10-30 Optical device

Country Status (1)

Country Link
JP (1) JPS5776514A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0252208U (en) * 1988-10-07 1990-04-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0252208U (en) * 1988-10-07 1990-04-16

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