JP2020190569A5 - Telecentric optics - Google Patents

Telecentric optics Download PDF

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Publication number
JP2020190569A5
JP2020190569A5 JP2020135553A JP2020135553A JP2020190569A5 JP 2020190569 A5 JP2020190569 A5 JP 2020190569A5 JP 2020135553 A JP2020135553 A JP 2020135553A JP 2020135553 A JP2020135553 A JP 2020135553A JP 2020190569 A5 JP2020190569 A5 JP 2020190569A5
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JP
Japan
Prior art keywords
optical element
telecentric optics
telecentric
optical
optics
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JP2020135553A
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Japanese (ja)
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JP6903392B2 (en
JP2020190569A (en
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Priority claimed from JP2015180529A external-priority patent/JP6883939B2/en
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Priority to JP2020135553A priority Critical patent/JP6903392B2/en
Priority claimed from JP2020135553A external-priority patent/JP6903392B2/en
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Publication of JP2020190569A5 publication Critical patent/JP2020190569A5/en
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Claims (1)

光軸に沿って第１光学要素および第２光学要素を備えるテレセントリック光学系であって、 A telecentric optical system having a first optical element and a second optical element along the optical axis.
前記第２光学要素は、前記第１光学要素との間に間隔を開けて配置され、 The second optical element is arranged at a distance from the first optical element.
前記第１光学要素の前記第２光学要素側の面、および前記第２光学要素の前記第１光学要素側の面の少なくとも一方にアパーチャが設けられていることを特徴とするテレセントリック光学系。 A telecentric optical system characterized in that an aperture is provided on at least one of a surface of the first optical element on the side of the second optical element and a surface of the second optical element on the side of the first optical element.
JP2020135553A 2015-09-14 2020-08-11 Telecentric optics Active JP6903392B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020135553A JP6903392B2 (en) 2015-09-14 2020-08-11 Telecentric optics

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015180529A JP6883939B2 (en) 2015-09-14 2015-09-14 Photoelectric encoder
JP2020135553A JP6903392B2 (en) 2015-09-14 2020-08-11 Telecentric optics

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2015180529A Division JP6883939B2 (en) 2015-09-14 2015-09-14 Photoelectric encoder

Publications (3)

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JP2020190569A JP2020190569A (en) 2020-11-26
JP2020190569A5 true JP2020190569A5 (en) 2021-04-01
JP6903392B2 JP6903392B2 (en) 2021-07-14

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JP2020135553A Active JP6903392B2 (en) 2015-09-14 2020-08-11 Telecentric optics

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385234A (en) * 1980-11-25 1983-05-24 Bei Electronics, Inc. Optical systems for optical encoders
JPS62232611A (en) * 1986-04-02 1987-10-13 Dainippon Screen Mfg Co Ltd Laser exposing device for image scanning and recording device
JP4713908B2 (en) * 2005-03-17 2011-06-29 株式会社ミツトヨ Lens system and photoelectric encoder using the same
EP2287639A3 (en) * 2009-08-17 2012-05-30 Sony Corporation Lens array imaging optics for a line sensor module
JP5981836B2 (en) * 2011-12-02 2016-08-31 京セラ株式会社 Erecting equal-magnification lens array unit, image reading apparatus, and image forming apparatus

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