JPS60186417U - Astigmatism removal device - Google Patents

Astigmatism removal device

Info

Publication number
JPS60186417U
JPS60186417U JP7496484U JP7496484U JPS60186417U JP S60186417 U JPS60186417 U JP S60186417U JP 7496484 U JP7496484 U JP 7496484U JP 7496484 U JP7496484 U JP 7496484U JP S60186417 U JPS60186417 U JP S60186417U
Authority
JP
Japan
Prior art keywords
removal device
astigmatism
converges
optical axis
cylindrical lens
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
JP7496484U
Other languages
Japanese (ja)
Inventor
文男 中辻
Original Assignee
日本電気ホームエレクトロニクス株式会社
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 日本電気ホームエレクトロニクス株式会社 filed Critical 日本電気ホームエレクトロニクス株式会社
Priority to JP7496484U priority Critical patent/JPS60186417U/en
Publication of JPS60186417U publication Critical patent/JPS60186417U/en
Pending legal-status Critical Current

Links

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 drawings]

第１図は本考案の一実施例の構成を示す断面図、第２図
は非点収差を説明するための光学系の断面図、第３図は
本考案の基礎となった従来技術の延長に基づく非点収差
除去装置の構成の一例を示す断面図、第４図は第３図の
作用・効果を説明するための特性図、第５１図、第６図
は、第１図に示し−た本考案の一実施例の作用・効果を
説明するための特性図である。 ｓｔｌ・・・・・・第１のシリンドリカル・レンズ、５
Ｌ−２・・・・・・第２のシリンドリカル・レンズ、Ｌ
・・・・・・収束レンズ。Fig. 1 is a cross-sectional view showing the configuration of an embodiment of the present invention, Fig. 2 is a cross-sectional view of an optical system to explain astigmatism, and Fig. 3 is an extension of the conventional technology that is the basis of the present invention. 4 is a characteristic diagram for explaining the action and effect of FIG. 3, and FIGS. 51 and 6 are the same as those shown in FIG. It is a characteristic diagram for explaining the action and effect of one embodiment of the present invention. stl...first cylindrical lens, 5
L-2...Second cylindrical lens, L
・・・・・・Convergent lens.

Claims (1)

【実用新案登録請求の範囲】 光軸に垂直な面内に設定された第１の方向に入射光を収
束または発散する第１のシリンドリカル・レンズと、 光軸に垂直な面内において前記第１の方向に垂直に設定
された第２の方向に木射光を収束または−発散する第２
のシリンドリカル・レンズとζ−前記第１、第２のシリ
ンドリカル・レンズの光軸方向の間隔を調整する手段と
を備えたことを特徴とする非点収差除去装置。　−[Claims for Utility Model Registration] A first cylindrical lens that converges or diverges incident light in a first direction set in a plane perpendicular to the optical axis; A second direction that converges or diverges tree light in a second direction set perpendicular to the direction of
An astigmatism removing device comprising: a cylindrical lens; and means for adjusting the distance between the first and second cylindrical lenses in the optical axis direction. −
JP7496484U 1984-05-22 1984-05-22 Astigmatism removal device Pending JPS60186417U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7496484U JPS60186417U (en) 1984-05-22 1984-05-22 Astigmatism removal device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7496484U JPS60186417U (en) 1984-05-22 1984-05-22 Astigmatism removal device

Publications (1)

Publication Number Publication Date
JPS60186417U true JPS60186417U (en) 1985-12-10

Family

ID=30615742

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7496484U Pending JPS60186417U (en) 1984-05-22 1984-05-22 Astigmatism removal device

Country Status (1)

Country Link
JP (1) JPS60186417U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999053488A1 (en) * 1998-04-08 1999-10-21 Seiko Epson Corporation Method and apparatus for exposing master disk for optical disk

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4918480A (en) * 1972-06-09 1974-02-18
JPS53100842A (en) * 1977-02-15 1978-09-02 Canon Inc Beam shaping optical system
JPS5446574A (en) * 1977-09-21 1979-04-12 Dainippon Screen Mfg Optical system for recording in picture scanning recorder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4918480A (en) * 1972-06-09 1974-02-18
JPS53100842A (en) * 1977-02-15 1978-09-02 Canon Inc Beam shaping optical system
JPS5446574A (en) * 1977-09-21 1979-04-12 Dainippon Screen Mfg Optical system for recording in picture scanning recorder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999053488A1 (en) * 1998-04-08 1999-10-21 Seiko Epson Corporation Method and apparatus for exposing master disk for optical disk

Similar Documents

Publication Publication Date Title
JPS60186417U (en) Astigmatism removal device
JPS5963316U (en) lens mirror frame
JPS59168738U (en) Fine finder system
JPS59161046U (en) Omnidirectional photodetector
JPS59158123U (en) optical collimator
JPS5881510U (en) variable magnification observation device
JPS5946320U (en) optical deflector
JPS6141213U (en) Light receiving module for optical communication
JPS58138901U (en) plastic lens construction
JPS60155144U (en) Reflective photoelectric switch
JPS59173018U (en) attachment lens
JPS5896501U (en) Tubular Fresnel lens for marker lights
JPS58195209U (en) optical fiber connector
JPS59184102U (en) optical element
JPS6124728U (en) Winder light shielding structure
JPS5934319U (en) optical pulse detector
JPS5951306U (en) right image mirror
JPS59104121U (en) fiber optic input device
JPS59161522U (en) Laser light source device
JPS58159648U (en) optical pickup device
JPS60169718U (en) Optical pickup device
JPS581902U (en) Small optical fixed attenuator
JPS60169601U (en) half prism
JPS5963312U (en) lens mirror frame
JPS58113007U (en) optical coupler