JPS59142750U - Device to measure lens resolution - Google Patents

Device to measure lens resolution

Info

Publication number
JPS59142750U
JPS59142750U JP3656583U JP3656583U JPS59142750U JP S59142750 U JPS59142750 U JP S59142750U JP 3656583 U JP3656583 U JP 3656583U JP 3656583 U JP3656583 U JP 3656583U JP S59142750 U JPS59142750 U JP S59142750U
Authority
JP
Japan
Prior art keywords
solid
image sensor
state image
resolution
frequency chart
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
JP3656583U
Other languages
Japanese (ja)
Other versions
JPH037799Y2 (en
Inventor
砂金　光記
Original Assignee
株式会社リコー
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 株式会社リコー filed Critical 株式会社リコー
Priority to JP3656583U priority Critical patent/JPS59142750U/en
Publication of JPS59142750U publication Critical patent/JPS59142750U/en
Application granted granted Critical
Publication of JPH037799Y2 publication Critical patent/JPH037799Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing Of Optical Devices Or Fibers (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

゛　第１図、および第２図は、従来技術を説明する　　
　　゛。 ための図、第３図ないし、第８図は、本考案の原理およ
び、効果を説明するための図、第９図は、白黒の条線群
による空間周波数チャートの空間周□　　期を説明する
ための図である。 Ｒ・・・ランプ（照明手段）、Ｃ・・・空間周波数チャ
ート、Ｌ・・・被検レンズ、■・・・固体撮像素子、Ｐ
・・・フォトエレメント。゛ Fig. 1 and Fig. 2 explain the prior art.
゛. Figures 3 to 8 are diagrams for explaining the principle and effects of the present invention, and Figure 9 is for explaining the spatial period of a spatial frequency chart using black and white lines. This is a diagram for R...Lamp (illumination means), C...Spatial frequency chart, L...Test lens, ■...Solid-state image sensor, P
...Photo element.

Claims (1)

【実用新案登録請求の範囲】 一定間隔で形成される白黒の条線群又は、空間的に一定
周期で濃度が正弦波的に変化する、空間周波数チャート
と、 この周波数チャートを照明する照明手段と、解像度を測
定すべき被検レンズを保持する保持手段と、 固体撮像素子とを有し、 上記空間周波数チャートのｍ倍率像を、被検レンズによ
り、固体撮像素子上に結像投影し、上記固体撮像素子の
出力によって、被検レンズの解像度を評価する装置であ
って、 空間周波数チャートの空間周期をＸＴ、固体撮像素子に
おけるフォトエレメントピッチをＸＯとするとき、これ
らＸア、ｘｏを、自然数Ｍおよび上。 配信率ｍに対して、 Ｘ、（２Ｍ−１−１）　Ｘ。 ７１ なる関係を満足するように定めたことを特徴とする、レ
ンズの解像度を測定する装置。[Claims for Utility Model Registration] A spatial frequency chart in which a group of black and white lines formed at regular intervals or a density changes sinusoidally in a spatially constant period, and illumination means for illuminating this frequency chart. , a holding means for holding a test lens whose resolution is to be measured, and a solid-state image sensor, which forms and projects an m-magnification image of the spatial frequency chart onto the solid-state image sensor using the test lens, and This is a device that evaluates the resolution of a lens to be tested based on the output of a solid-state image sensor, where XT is the spatial period of the spatial frequency chart, and XO is the photoelement pitch in the solid-state image sensor, and these Xa and xo are natural numbers. M and above. For delivery rate m, X, (2M-1-1) X. 71. A device for measuring the resolution of a lens, characterized in that it is determined to satisfy the following relationship.
JP3656583U 1983-03-14 1983-03-14 Device to measure lens resolution Granted JPS59142750U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3656583U JPS59142750U (en) 1983-03-14 1983-03-14 Device to measure lens resolution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3656583U JPS59142750U (en) 1983-03-14 1983-03-14 Device to measure lens resolution

Publications (2)

Publication Number Publication Date
JPS59142750U true JPS59142750U (en) 1984-09-25
JPH037799Y2 JPH037799Y2 (en) 1991-02-26

Family

ID=30167234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3656583U Granted JPS59142750U (en) 1983-03-14 1983-03-14 Device to measure lens resolution

Country Status (1)

Country Link
JP (1) JPS59142750U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0614940U (en) * 1992-07-24 1994-02-25 矢崎総業株式会社 Pressure detector for gas meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0614940U (en) * 1992-07-24 1994-02-25 矢崎総業株式会社 Pressure detector for gas meter

Also Published As

Publication number Publication date
JPH037799Y2 (en) 1991-02-26

Similar Documents

Publication Publication Date Title
JPS59142750U (en) Device to measure lens resolution
JPS59149006U (en) detection device
JPS59149125U (en) distance measuring device
JPS5888113U (en) Optical displacement measuring device
JPS5921744U (en) Lens specific image plane illuminance measuring device
JPS59185609U (en) Surface roughness measuring device
JPS59134006U (en) Optical mechanical quantity measuring device
JPS58144219U (en) displacement measuring device
JPS60166813U (en) Magnetic head shape/attitude measurement device
JPS59195867U (en) Color document reading device
JPS6133553U (en) image reading device
JPS5940841U (en) Color measurement device for discoloration test paper
JPS607007U (en) flatness measuring device
JPS59135407U (en) Width measurement device using image sensor
JPS58129109U (en) Distance measuring device using spatial filter
JPS60120352U (en) Powder concentration meter side device
JPS6084926U (en) Flow field photography device
JPS60181961U (en) image reading device
JPS5930040U (en) Overlap detection device for paper sheets
JPS58125809U (en) shape detection device
JPS6061864U (en) image reading device
JPS5866761U (en) 2 sensor sequential reading device
JPH0164263U (en)
JPS60116779U (en) color imaging device
JPS6119750U (en) Press mark detection device