JPS52155550A - Focus distance calibrating means for in-mirror type lens - Google Patents

Focus distance calibrating means for in-mirror type lens

Info

Publication number
JPS52155550A
JPS52155550A JP7170376A JP7170376A JPS52155550A JP S52155550 A JPS52155550 A JP S52155550A JP 7170376 A JP7170376 A JP 7170376A JP 7170376 A JP7170376 A JP 7170376A JP S52155550 A JPS52155550 A JP S52155550A
Authority
JP
Japan
Prior art keywords
focus distance
type lens
mirror type
calibrating means
distance calibrating
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
JP7170376A
Other languages
Japanese (ja)
Inventor
Nobuhisa Mikami
Atsushi Kawamura
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7170376A priority Critical patent/JPS52155550A/en
Publication of JPS52155550A publication Critical patent/JPS52155550A/en
Pending legal-status Critical Current

Links

Landscapes

  • Lenses (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE: To facilitate better and easy calibration of focus set up during manufacturing process, by adjusting aerial gap on lenses after selecting and using the reflection mirros which slightly differ in their curvature, in producing in-mirror lens for such as copying machine and etc.
COPYRIGHT: (C)1977,JPO&Japio
JP7170376A 1976-06-19 1976-06-19 Focus distance calibrating means for in-mirror type lens Pending JPS52155550A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7170376A JPS52155550A (en) 1976-06-19 1976-06-19 Focus distance calibrating means for in-mirror type lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7170376A JPS52155550A (en) 1976-06-19 1976-06-19 Focus distance calibrating means for in-mirror type lens

Publications (1)

Publication Number Publication Date
JPS52155550A true JPS52155550A (en) 1977-12-24

Family

ID=13468152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7170376A Pending JPS52155550A (en) 1976-06-19 1976-06-19 Focus distance calibrating means for in-mirror type lens

Country Status (1)

Country Link
JP (1) JPS52155550A (en)

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