JPS5237425A - Helicoid for photographic lens - Google Patents

Helicoid for photographic lens

Info

Publication number
JPS5237425A
JPS5237425A JP11321775A JP11321775A JPS5237425A JP S5237425 A JPS5237425 A JP S5237425A JP 11321775 A JP11321775 A JP 11321775A JP 11321775 A JP11321775 A JP 11321775A JP S5237425 A JPS5237425 A JP S5237425A
Authority
JP
Japan
Prior art keywords
helicoid
photographic lens
providing
lubricating oil
around
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.)
Granted
Application number
JP11321775A
Other languages
Japanese (ja)
Other versions
JPS5848881B2 (en
Inventor
Shigeru Hashimoto
Akira Masuda
Katsuro Mochizuki
Akira Sato
Koji Takeuchi
Teruhisa Oda
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP11321775A priority Critical patent/JPS5848881B2/en
Publication of JPS5237425A publication Critical patent/JPS5237425A/en
Publication of JPS5848881B2 publication Critical patent/JPS5848881B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Focusing (AREA)
  • Lens Barrels (AREA)
  • Automatic Focus Adjustment (AREA)
  • Transmission Devices (AREA)

Abstract

PURPOSE: To obtain a helicoid for the photographic lens of a smooth operation wherein a lubricating oil is never leaked out by providing a divided helicoid screw around the outer circumference of a helicoid cylinder and providing an oil sump groove for the lubricating oil around each screw portion.
COPYRIGHT: (C)1977,JPO&Japio
JP11321775A 1975-09-19 1975-09-19 lens barrel Expired JPS5848881B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11321775A JPS5848881B2 (en) 1975-09-19 1975-09-19 lens barrel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11321775A JPS5848881B2 (en) 1975-09-19 1975-09-19 lens barrel

Related Child Applications (4)

Application Number Title Priority Date Filing Date
JP16038482A Division JPS5878108A (en) 1982-09-14 1982-09-14 Lens barrel having straight helicoid cylinder
JP7242383A Division JPS58193506A (en) 1983-04-25 1983-04-25 Lens barrel
JP7242483A Division JPS58193507A (en) 1983-04-25 1983-04-25 Plastic lens barrel
JP16439784A Division JPS6063511A (en) 1984-08-06 1984-08-06 Lens barrel

Publications (2)

Publication Number Publication Date
JPS5237425A true JPS5237425A (en) 1977-03-23
JPS5848881B2 JPS5848881B2 (en) 1983-10-31

Family

ID=14606531

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11321775A Expired JPS5848881B2 (en) 1975-09-19 1975-09-19 lens barrel

Country Status (1)

Country Link
JP (1) JPS5848881B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54170210U (en) * 1978-05-15 1979-12-01
JPS5742658U (en) * 1980-08-22 1982-03-08
JPS6343116U (en) * 1987-01-08 1988-03-23
JPH08304683A (en) * 1996-05-08 1996-11-22 Olympus Optical Co Ltd Lens barrel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54170210U (en) * 1978-05-15 1979-12-01
JPS5742658U (en) * 1980-08-22 1982-03-08
JPS6343116U (en) * 1987-01-08 1988-03-23
JPS6344812Y2 (en) * 1987-01-08 1988-11-21
JPH08304683A (en) * 1996-05-08 1996-11-22 Olympus Optical Co Ltd Lens barrel

Also Published As

Publication number Publication date
JPS5848881B2 (en) 1983-10-31

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