JPS5536757A - Black body having rectangular low-brightness plane - Google Patents

Black body having rectangular low-brightness plane

Info

Publication number
JPS5536757A
JPS5536757A JP10980578A JP10980578A JPS5536757A JP S5536757 A JPS5536757 A JP S5536757A JP 10980578 A JP10980578 A JP 10980578A JP 10980578 A JP10980578 A JP 10980578A JP S5536757 A JPS5536757 A JP S5536757A
Authority
JP
Japan
Prior art keywords
rectangular plates
plane
mirror surfaces
light
plates
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
JP10980578A
Other languages
Japanese (ja)
Inventor
Naomiki Izumitani
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP10980578A priority Critical patent/JPS5536757A/en
Publication of JPS5536757A publication Critical patent/JPS5536757A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
    • G01J5/53—Reference sources, e.g. standard lamps; Black bodies

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radiation Pyrometers (AREA)

Abstract

PURPOSE:To obtain highly accurate low-brightness plane by combining two rectangular plates having a normal reflection surface with the mirror surfaces being opposed one another. CONSTITUTION:Rectangular plates 1 and 2 have mirror surfaces 1a and 1b, respectively. The vertical angle theta which is formed by combining the plates in a lambda shape is less than 90 deg.. The outside portions of the open sides of the rectangular plates 1 and 2 are cut out along the planes 1b and 2b, which are in parallel with the bisector of the vertical angle theta, or are equally inclined to the direction of the parallel plane, and the open ends of the rectangular plates 1 and 2 form sharp edges 1c and 2c. A fine gap 3 is provided at the portion where the rectangular plates 1 and 2 approach in order to pass the light which is reflected by the mirror surfaces 1a and 2a. The light through the fine gap 3 is absorbed by a light absorbing plane 4a. The plane between the sharp edge 1c and 2c of the rectangular plates 1 and 2 is a low-brightness plane 5.
JP10980578A 1978-09-08 1978-09-08 Black body having rectangular low-brightness plane Pending JPS5536757A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10980578A JPS5536757A (en) 1978-09-08 1978-09-08 Black body having rectangular low-brightness plane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10980578A JPS5536757A (en) 1978-09-08 1978-09-08 Black body having rectangular low-brightness plane

Publications (1)

Publication Number Publication Date
JPS5536757A true JPS5536757A (en) 1980-03-14

Family

ID=14519648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10980578A Pending JPS5536757A (en) 1978-09-08 1978-09-08 Black body having rectangular low-brightness plane

Country Status (1)

Country Link
JP (1) JPS5536757A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009109020A (en) * 2000-11-08 2009-05-21 Jtekt Corp Assembly method of drive force transmitting equipment using electromagnetic clutch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009109020A (en) * 2000-11-08 2009-05-21 Jtekt Corp Assembly method of drive force transmitting equipment using electromagnetic clutch

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