JPS5545084A - High resolution lens - Google Patents

High resolution lens

Info

Publication number
JPS5545084A
JPS5545084A JP11959178A JP11959178A JPS5545084A JP S5545084 A JPS5545084 A JP S5545084A JP 11959178 A JP11959178 A JP 11959178A JP 11959178 A JP11959178 A JP 11959178A JP S5545084 A JPS5545084 A JP S5545084A
Authority
JP
Japan
Prior art keywords
face
lens
lenses
aspherical
convex
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
JP11959178A
Other languages
Japanese (ja)
Other versions
JPS6148130B2 (en
Inventor
Fumio Kondo
Masayuki Masuyama
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.)
Tokyo Optical Co Ltd
Original Assignee
Tokyo Optical 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 Tokyo Optical Co Ltd filed Critical Tokyo Optical Co Ltd
Priority to JP11959178A priority Critical patent/JPS5545084A/en
Publication of JPS5545084A publication Critical patent/JPS5545084A/en
Publication of JPS6148130B2 publication Critical patent/JPS6148130B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/003—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having two lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

PURPOSE:To enable the high resolution lens to be manufactured inexpensively from a minimum number of lenses by so constituting the lens that it consists of two lens systems having aspherical face on the second face. CONSTITUTION:Refractive indices of two lenses 1 and 2 are let to be n1, n2 respectively and the focal length of the lens 1 is let to be f1. The first face thereof is made a convex face of a strong radius r1 of curvature and the second face a convex or concave aspherical lens. The front of the lens 2 is made a spherical face of a strong radius r3 of curvature and the back face a gentle convex or concave aspherical lens. Further the air spacing between the lenses 1 and 2 is let to be d2 and the combined focal length of the lenses to be f. With such constitution, condition formulas I thru IV are satisfied, whereby the second face is so constituted as to be the aspherical face whose vertex is approximated by a spherical face and which includes at least up to the terms proportional to the fourth power of incident height.
JP11959178A 1978-09-26 1978-09-26 High resolution lens Granted JPS5545084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11959178A JPS5545084A (en) 1978-09-26 1978-09-26 High resolution lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11959178A JPS5545084A (en) 1978-09-26 1978-09-26 High resolution lens

Publications (2)

Publication Number Publication Date
JPS5545084A true JPS5545084A (en) 1980-03-29
JPS6148130B2 JPS6148130B2 (en) 1986-10-22

Family

ID=14765157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11959178A Granted JPS5545084A (en) 1978-09-26 1978-09-26 High resolution lens

Country Status (1)

Country Link
JP (1) JPS5545084A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3220408A1 (en) 1982-05-29 1983-12-01 Optische Werke G. Rodenstock, 8000 München SCAN LENS
JPS6043626A (en) * 1983-07-25 1985-03-08 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Projection lens system
US4525040A (en) * 1982-06-16 1985-06-25 Olympus Optical Co., Ltd. Lens system for optical recording type disks
JPS60247213A (en) * 1984-05-22 1985-12-06 Alps Electric Co Ltd Objective lens for optical pickup
US4571034A (en) * 1982-08-05 1986-02-18 Olympus Optical Co., Ltd. Lens system for optical recording type disks
US4595264A (en) * 1982-09-13 1986-06-17 Olympus Optical Co., Ltd. Lens system for optical recording type disks
JPS61177407A (en) * 1985-02-01 1986-08-09 Konishiroku Photo Ind Co Ltd Objective lens for recording and reproducing of optical information recording medium
JPS6267740A (en) * 1985-09-20 1987-03-27 Konishiroku Photo Ind Co Ltd Light converging optical system for recording and reproducing optical system of optical information storage medium
DE3249662C2 (en) * 1982-05-29 1988-08-04 Optische Werke G. Rodenstock, 8000 Muenchen, De Scanning lens
US9273683B2 (en) 2011-03-28 2016-03-01 Kabushiki Kaisha Toyota Jidoshokki Motor-driven compressor
US9777944B2 (en) 2012-08-17 2017-10-03 Trane International Inc. Sound enclosure for a compressor
US10030660B1 (en) 2017-05-31 2018-07-24 Trane International Inc. Pulsation and vibration control device
US10228148B2 (en) 2012-07-11 2019-03-12 Trane International Inc. Methods and apparatuses to isolate vibration
US10731648B2 (en) 2014-11-07 2020-08-04 Trane International Inc. Sound control for a heating, ventilation, and air conditioning unit

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3249662C2 (en) * 1982-05-29 1988-08-04 Optische Werke G. Rodenstock, 8000 Muenchen, De Scanning lens
JPS58211729A (en) * 1982-05-29 1983-12-09 オプテイツシエ・ウエルケ・ゲ−・ロ−デンストツク Scan lens system
DE3220408A1 (en) 1982-05-29 1983-12-01 Optische Werke G. Rodenstock, 8000 München SCAN LENS
US4525040A (en) * 1982-06-16 1985-06-25 Olympus Optical Co., Ltd. Lens system for optical recording type disks
US4571034A (en) * 1982-08-05 1986-02-18 Olympus Optical Co., Ltd. Lens system for optical recording type disks
US4595264A (en) * 1982-09-13 1986-06-17 Olympus Optical Co., Ltd. Lens system for optical recording type disks
JPS6043626A (en) * 1983-07-25 1985-03-08 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Projection lens system
JPS60247213A (en) * 1984-05-22 1985-12-06 Alps Electric Co Ltd Objective lens for optical pickup
JPH0462563B2 (en) * 1985-02-01 1992-10-06 Konishiroku Photo Ind
JPS61177407A (en) * 1985-02-01 1986-08-09 Konishiroku Photo Ind Co Ltd Objective lens for recording and reproducing of optical information recording medium
JPS6267740A (en) * 1985-09-20 1987-03-27 Konishiroku Photo Ind Co Ltd Light converging optical system for recording and reproducing optical system of optical information storage medium
US9273683B2 (en) 2011-03-28 2016-03-01 Kabushiki Kaisha Toyota Jidoshokki Motor-driven compressor
US10228148B2 (en) 2012-07-11 2019-03-12 Trane International Inc. Methods and apparatuses to isolate vibration
US9777944B2 (en) 2012-08-17 2017-10-03 Trane International Inc. Sound enclosure for a compressor
US10082314B2 (en) 2012-08-17 2018-09-25 Trane International Inc. Sound enclosure for a compressor
US10982879B2 (en) 2012-08-17 2021-04-20 Trane International Inc. Sound enclosure for a compressor
US10731648B2 (en) 2014-11-07 2020-08-04 Trane International Inc. Sound control for a heating, ventilation, and air conditioning unit
US11293441B2 (en) 2014-11-07 2022-04-05 Trane International Inc. Sound control for a heating, ventilation, and air conditioning unit
US11661941B2 (en) 2014-11-07 2023-05-30 Trane International Inc. Sound control for a heating, ventilation, and air conditioning unit
US10030660B1 (en) 2017-05-31 2018-07-24 Trane International Inc. Pulsation and vibration control device

Also Published As

Publication number Publication date
JPS6148130B2 (en) 1986-10-22

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