JPS55117120A - Reflection type optical system - Google Patents

Reflection type optical system

Info

Publication number
JPS55117120A
JPS55117120A JP2364279A JP2364279A JPS55117120A JP S55117120 A JPS55117120 A JP S55117120A JP 2364279 A JP2364279 A JP 2364279A JP 2364279 A JP2364279 A JP 2364279A JP S55117120 A JPS55117120 A JP S55117120A
Authority
JP
Japan
Prior art keywords
correcting plate
optical system
reflection type
luminous flux
type optical
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
JP2364279A
Other languages
Japanese (ja)
Inventor
Mitsuo Yasukuni
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP2364279A priority Critical patent/JPS55117120A/en
Publication of JPS55117120A publication Critical patent/JPS55117120A/en
Pending legal-status Critical Current

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  • Lenses (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

PURPOSE: To obtain the reflection type optical system of a large diameter and wide angle of view which is superior in imaging performance over the entire part of the image plane by disposing a coma flare correcting plate of peripheral light in front of a television projector using only the Schmidt correcting plate.
CONSTITUTION: An extremely bright optical system of wide angle of view is demanded for television projectors and when a reflection type optical system using a Schmidt correcting plate is used in order to obtain a large diameter, the degradation in imaging performance of the periphery of image plane is large and the decrease in resolving power is considerable of the portions closer to the periphery because no considerations are paid for out-of-axis light. So, a correcting plate 7 which corrects coma flare of out-of-axis light is disposed in front of the Schmidt correcting plate 1. r6 of the correcting plate 7 is plane, r6 aspherical face and selecting the aspherical face coefficient to the specified value lets only the peripheral luminous flux become over without any change in the aberrations of the central luminous flux, thus permitting the improvement of the focusing characteristic of the luminous flux as a whole.
COPYRIGHT: (C)1980,JPO&Japio
JP2364279A 1979-02-28 1979-02-28 Reflection type optical system Pending JPS55117120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2364279A JPS55117120A (en) 1979-02-28 1979-02-28 Reflection type optical system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2364279A JPS55117120A (en) 1979-02-28 1979-02-28 Reflection type optical system

Publications (1)

Publication Number Publication Date
JPS55117120A true JPS55117120A (en) 1980-09-09

Family

ID=12116212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2364279A Pending JPS55117120A (en) 1979-02-28 1979-02-28 Reflection type optical system

Country Status (1)

Country Link
JP (1) JPS55117120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0660152A2 (en) * 1993-12-22 1995-06-28 Hughes Aircraft Company Dynamic aberration corrector for conformal windows

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0660152A2 (en) * 1993-12-22 1995-06-28 Hughes Aircraft Company Dynamic aberration corrector for conformal windows
EP0660152A3 (en) * 1993-12-22 1995-09-20 Hughes Aircraft Co Dynamic aberration corrector for conformal windows.

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