JPS5713832A - Receiver - Google Patents

Receiver

Info

Publication number
JPS5713832A
JPS5713832A JP8802480A JP8802480A JPS5713832A JP S5713832 A JPS5713832 A JP S5713832A JP 8802480 A JP8802480 A JP 8802480A JP 8802480 A JP8802480 A JP 8802480A JP S5713832 A JPS5713832 A JP S5713832A
Authority
JP
Japan
Prior art keywords
filter
light
louver
stacking
wavelength
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
JP8802480A
Other languages
Japanese (ja)
Inventor
Takamitsu Narita
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8802480A priority Critical patent/JPS5713832A/en
Publication of JPS5713832A publication Critical patent/JPS5713832A/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
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/67—Optical arrangements in the receiver
    • H04B10/671—Optical arrangements in the receiver for controlling the input optical signal
    • H04B10/675—Optical arrangements in the receiver for controlling the input optical signal for controlling the optical bandwidth of the input signal, e.g. spectral filtering

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Selective Calling Equipment (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To prevent a receiving circuit unit from malfunctioning by stacking a filter part which permits only light of >= about 700nm wavelength and a filter part equipped with a louver part which limits an angle of light incidence within a permissible range. CONSTITUTION:A filter structure B is constituted by stacking a filter 25 and a filter 27. This filter 25 permits light with >= about 700nm wavelength to pass through it. The filter 27, on the other hand, is equipped with a louver 272 in a light-transmittable body 271, and the louver 272 transmits light arriving as shown by an arrow a1 and intercepts light arriving as shown by arrows a2, a3, etc. Consequently, a TV receiver is used for a general purpose, light from a fluorescent lamp in the direction of the arrow a1 is intercepted by the louver to suppress the malfunction of a receiving circuit unit sufficiently.
JP8802480A 1980-06-28 1980-06-28 Receiver Pending JPS5713832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8802480A JPS5713832A (en) 1980-06-28 1980-06-28 Receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8802480A JPS5713832A (en) 1980-06-28 1980-06-28 Receiver

Publications (1)

Publication Number Publication Date
JPS5713832A true JPS5713832A (en) 1982-01-23

Family

ID=13931251

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8802480A Pending JPS5713832A (en) 1980-06-28 1980-06-28 Receiver

Country Status (1)

Country Link
JP (1) JPS5713832A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62175035A (en) * 1986-01-28 1987-07-31 Sharp Corp Wireless mike for utilizing infrared ray
JPH01105239U (en) * 1987-12-29 1989-07-14
JPH0332846U (en) * 1989-08-02 1991-03-29
US5614699A (en) * 1994-05-09 1997-03-25 Nissan Motor Co., Ltd. Automobile exhaust noise suppressor
US5723827A (en) * 1994-12-26 1998-03-03 Nissan Motor Co., Ltd. Noise suppressing muffler

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62175035A (en) * 1986-01-28 1987-07-31 Sharp Corp Wireless mike for utilizing infrared ray
JPH01105239U (en) * 1987-12-29 1989-07-14
JPH0332846U (en) * 1989-08-02 1991-03-29
US5614699A (en) * 1994-05-09 1997-03-25 Nissan Motor Co., Ltd. Automobile exhaust noise suppressor
US5739483A (en) * 1994-05-09 1998-04-14 Nissan Motor Co., Ltd. Automobile exhaust noise suppressor
US5723827A (en) * 1994-12-26 1998-03-03 Nissan Motor Co., Ltd. Noise suppressing muffler

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