JP2021071502A - 光学系、投射レンズ、画像投射装置および撮像レンズ - Google Patents

光学系、投射レンズ、画像投射装置および撮像レンズ Download PDF

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Publication number
JP2021071502A
JP2021071502A JP2019195985A JP2019195985A JP2021071502A JP 2021071502 A JP2021071502 A JP 2021071502A JP 2019195985 A JP2019195985 A JP 2019195985A JP 2019195985 A JP2019195985 A JP 2019195985A JP 2021071502 A JP2021071502 A JP 2021071502A
Authority
JP
Japan
Prior art keywords
lens
optical system
group
negative lens
projection
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.)
Withdrawn
Application number
JP2019195985A
Other languages
English (en)
Japanese (ja)
Other versions
JP2021071502A5 (https=
Inventor
高橋　真
Makoto Takahashi
真 高橋
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP2019195985A priority Critical patent/JP2021071502A/ja
Priority to US17/078,339 priority patent/US20210124156A1/en
Priority to CN202011153471.8A priority patent/CN112748520A/zh
Publication of JP2021071502A publication Critical patent/JP2021071502A/ja
Publication of JP2021071502A5 publication Critical patent/JP2021071502A5/ja
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/142—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only
    • 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
    • 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
    • G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
    • G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/147—Optical correction of image distortions, e.g. keystone

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Projection Apparatus (AREA)
JP2019195985A 2019-10-29 2019-10-29 光学系、投射レンズ、画像投射装置および撮像レンズ Withdrawn JP2021071502A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2019195985A JP2021071502A (ja) 2019-10-29 2019-10-29 光学系、投射レンズ、画像投射装置および撮像レンズ
US17/078,339 US20210124156A1 (en) 2019-10-29 2020-10-23 Optical system, projection lens, image projection apparatus and image capturing lens
CN202011153471.8A CN112748520A (zh) 2019-10-29 2020-10-26 光学系统、投影透镜、图像投影装置和图像捕获透镜

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019195985A JP2021071502A (ja) 2019-10-29 2019-10-29 光学系、投射レンズ、画像投射装置および撮像レンズ

Publications (2)

Publication Number Publication Date
JP2021071502A true JP2021071502A (ja) 2021-05-06
JP2021071502A5 JP2021071502A5 (https=) 2022-11-04

Family

ID=75585067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019195985A Withdrawn JP2021071502A (ja) 2019-10-29 2019-10-29 光学系、投射レンズ、画像投射装置および撮像レンズ

Country Status (3)

Country Link
US (1) US20210124156A1 (https=)
JP (1) JP2021071502A (https=)
CN (1) CN112748520A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4246200A1 (en) 2022-03-17 2023-09-20 Canon Kabushiki Kaisha Optical system including negative lens and positive lens, imaging apparatus including the same, in-vehicle system including the same, and moving apparatus including the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7187590B2 (ja) 2021-01-27 2022-12-12 キヤノン株式会社 光学系、撮像装置、車載システムおよび移動装置
JP2022114767A (ja) 2021-01-27 2022-08-08 キヤノン株式会社 光学系、撮像装置、車載システムおよび移動装置
JP2022114764A (ja) 2021-01-27 2022-08-08 キヤノン株式会社 光学系、撮像装置、車載システムおよび移動装置
CN116774394A (zh) * 2022-03-17 2023-09-19 佳能株式会社 光学系统、成像装置、车载系统及移动装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4321056B2 (ja) * 2001-12-17 2009-08-26 パナソニック株式会社 温度補償機能を有する変倍撮像装置およびそれを用いたビデオカメラ
JP4813132B2 (ja) * 2005-09-16 2011-11-09 オリンパスイメージング株式会社 結像光学系及びそれを備えた撮像装置
JP6827299B2 (ja) * 2016-11-07 2021-02-10 京セラ株式会社 撮像レンズ
CN108469667B (zh) * 2018-05-31 2024-04-26 江西联创电子有限公司 广角镜头
CN110941077B (zh) * 2018-09-25 2023-01-24 富士胶片株式会社 成像光学系统、投射型显示装置及摄像装置
JP7115963B2 (ja) * 2018-11-27 2022-08-09 富士フイルム株式会社 ズームレンズ及び撮像装置
CN109870787B (zh) * 2019-03-20 2020-11-17 江西联益光学有限公司 一种光学成像镜头

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4246200A1 (en) 2022-03-17 2023-09-20 Canon Kabushiki Kaisha Optical system including negative lens and positive lens, imaging apparatus including the same, in-vehicle system including the same, and moving apparatus including the same
US12326615B2 (en) 2022-03-17 2025-06-10 Canon Kabushiki Kaisha Optical system including negative lens and positive lens, imaging apparatus including the same, in-vehicle system including the same, and moving apparatus including the same

Also Published As

Publication number Publication date
CN112748520A (zh) 2021-05-04
US20210124156A1 (en) 2021-04-29

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