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JPS564031A - Mtf measuring device - Google Patents

Mtf measuring device

Info

Publication number
JPS564031A
JPS564031A JP8031579A JP8031579A JPS564031A JP S564031 A JPS564031 A JP S564031A JP 8031579 A JP8031579 A JP 8031579A JP 8031579 A JP8031579 A JP 8031579A JP S564031 A JPS564031 A JP S564031A
Authority
JP
Japan
Prior art keywords
chart
image
respect
mtf
elements
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
JP8031579A
Other languages
Japanese (ja)
Other versions
JPS6262284B2 (en
Inventor
Nobuo Sakuma
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 JP8031579A priority Critical patent/JPS564031A/en
Publication of JPS564031A publication Critical patent/JPS564031A/en
Publication of JPS6262284B2 publication Critical patent/JPS6262284B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/0292—Testing optical properties of objectives by measuring the optical modulation transfer function

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

PURPOSE:To continuously vary the space frequency for measuring MTF by varying the linear direction of a grid chart with respect to the arranged direction of light receiving elements, in a device which projects the grid chart image on solid scanning elements through an optical element to be inspected, and the transmission function (MTF) of the optical element is measured by the outputs of the above scanning elements. CONSTITUTION:A light ray emitted from a light source 22 is focused on a focusing lens 23, and forms an image of a chart 24 on solid scanning elements 281 through 289 arranged on a plate 29 through a lens 26 to be inspected. The solid scanning element 28 has a self scanning function as CCD or the like, and converts the waveform signal of the spatial chart 24 into a time waveform signal. The image of the chart projected on the plate 29 is rotated by a rotary device 25, and can assume various angles with respect to the arrangement of unit light receiving elements. Accordingly, MTF values corresponding to spatial frequencies continuously varying with respect to nine image heights including the optical axis corresponding point can be simultaneously obtained.
JP8031579A 1979-06-26 1979-06-26 Mtf measuring device Granted JPS564031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8031579A JPS564031A (en) 1979-06-26 1979-06-26 Mtf measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8031579A JPS564031A (en) 1979-06-26 1979-06-26 Mtf measuring device

Publications (2)

Publication Number Publication Date
JPS564031A true JPS564031A (en) 1981-01-16
JPS6262284B2 JPS6262284B2 (en) 1987-12-25

Family

ID=13714820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8031579A Granted JPS564031A (en) 1979-06-26 1979-06-26 Mtf measuring device

Country Status (1)

Country Link
JP (1) JPS564031A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163838A (en) * 1981-04-01 1982-10-08 Agency Of Ind Science & Technol Evaluation device for transmitted picture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163838A (en) * 1981-04-01 1982-10-08 Agency Of Ind Science & Technol Evaluation device for transmitted picture
JPH0310897B2 (en) * 1981-04-01 1991-02-14 Kogyo Gijutsuin

Also Published As

Publication number Publication date
JPS6262284B2 (en) 1987-12-25

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