JPS63188510U - - Google Patents

Info

Publication number
JPS63188510U
JPS63188510U JP7977187U JP7977187U JPS63188510U JP S63188510 U JPS63188510 U JP S63188510U JP 7977187 U JP7977187 U JP 7977187U JP 7977187 U JP7977187 U JP 7977187U JP S63188510 U JPS63188510 U JP S63188510U
Authority
JP
Japan
Prior art keywords
light shielding
light
small hole
darkroom
sun
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
JP7977187U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP7977187U priority Critical patent/JPS63188510U/ja
Publication of JPS63188510U publication Critical patent/JPS63188510U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
JP7977187U 1987-05-28 1987-05-28 Pending JPS63188510U (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7977187U JPS63188510U (enrdf_load_stackoverflow) 1987-05-28 1987-05-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7977187U JPS63188510U (enrdf_load_stackoverflow) 1987-05-28 1987-05-28

Publications (1)

Publication Number Publication Date
JPS63188510U true JPS63188510U (enrdf_load_stackoverflow) 1988-12-02

Family

ID=30929950

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7977187U Pending JPS63188510U (enrdf_load_stackoverflow) 1987-05-28 1987-05-28

Country Status (1)

Country Link
JP (1) JPS63188510U (enrdf_load_stackoverflow)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5353040A (en) * 1976-10-26 1978-05-15 Sony Corp Solar tracking system
JPS5595809A (en) * 1979-01-16 1980-07-21 Noriaki Fujimura Optical axis detector
JPS55102013A (en) * 1979-01-26 1980-08-04 Sharp Corp Sun tracking unit
JPS57120808A (en) * 1981-01-21 1982-07-28 Agency Of Ind Science & Technol Detector for angle of parallel rays

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5353040A (en) * 1976-10-26 1978-05-15 Sony Corp Solar tracking system
JPS5595809A (en) * 1979-01-16 1980-07-21 Noriaki Fujimura Optical axis detector
JPS55102013A (en) * 1979-01-26 1980-08-04 Sharp Corp Sun tracking unit
JPS57120808A (en) * 1981-01-21 1982-07-28 Agency Of Ind Science & Technol Detector for angle of parallel rays

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