JPS5228339A - Differential slit - Google Patents

Differential slit

Info

Publication number
JPS5228339A
JPS5228339A JP10411775A JP10411775A JPS5228339A JP S5228339 A JPS5228339 A JP S5228339A JP 10411775 A JP10411775 A JP 10411775A JP 10411775 A JP10411775 A JP 10411775A JP S5228339 A JPS5228339 A JP S5228339A
Authority
JP
Japan
Prior art keywords
slit
differential
differential slit
perfectly
pass
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
JP10411775A
Other languages
Japanese (ja)
Other versions
JPS567562B2 (en
Inventor
Nobuya Shinoyama
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.)
Nikon Corp
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial Co Ltd
Nippon Kogaku KK
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 Nippon Chemical Industrial Co Ltd, Nippon Kogaku KK filed Critical Nippon Chemical Industrial Co Ltd
Priority to JP10411775A priority Critical patent/JPS5228339A/en
Publication of JPS5228339A publication Critical patent/JPS5228339A/en
Publication of JPS567562B2 publication Critical patent/JPS567562B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE: Simple position detection by a slit consisting of line apertures to perfectly block the luminous flux, perfectly pass it, and half pass it.
COPYRIGHT: (C)1977,JPO&Japio
JP10411775A 1975-08-29 1975-08-29 Differential slit Granted JPS5228339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10411775A JPS5228339A (en) 1975-08-29 1975-08-29 Differential slit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10411775A JPS5228339A (en) 1975-08-29 1975-08-29 Differential slit

Publications (2)

Publication Number Publication Date
JPS5228339A true JPS5228339A (en) 1977-03-03
JPS567562B2 JPS567562B2 (en) 1981-02-18

Family

ID=14372172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10411775A Granted JPS5228339A (en) 1975-08-29 1975-08-29 Differential slit

Country Status (1)

Country Link
JP (1) JPS5228339A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5461545A (en) * 1977-10-26 1979-05-17 Hitachi Ltd Optically scanning location
WO2001031291A1 (en) * 1999-10-25 2001-05-03 Totani Giken Kogyo Co., Ltd. Heat seal position measurement device for plastic film

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS503362A (en) * 1973-05-10 1975-01-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS503362A (en) * 1973-05-10 1975-01-14

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5461545A (en) * 1977-10-26 1979-05-17 Hitachi Ltd Optically scanning location
JPS6113207B2 (en) * 1977-10-26 1986-04-12 Hitachi Seisakusho Kk
WO2001031291A1 (en) * 1999-10-25 2001-05-03 Totani Giken Kogyo Co., Ltd. Heat seal position measurement device for plastic film

Also Published As

Publication number Publication date
JPS567562B2 (en) 1981-02-18

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