FR2257915B1 - - Google Patents

Info

Publication number
FR2257915B1
FR2257915B1 FR7500778A FR7500778A FR2257915B1 FR 2257915 B1 FR2257915 B1 FR 2257915B1 FR 7500778 A FR7500778 A FR 7500778A FR 7500778 A FR7500778 A FR 7500778A FR 2257915 B1 FR2257915 B1 FR 2257915B1
Authority
FR
France
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.)
Expired
Application number
FR7500778A
Other languages
French (fr)
Other versions
FR2257915A1 (de
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.)
Ernst Leitz Wetzlar GmbH
Original Assignee
Ernst Leitz Wetzlar GmbH
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
Priority claimed from DE2401476A external-priority patent/DE2401476A1/de
Priority claimed from DE2431551A external-priority patent/DE2431551C2/de
Application filed by Ernst Leitz Wetzlar GmbH filed Critical Ernst Leitz Wetzlar GmbH
Publication of FR2257915A1 publication Critical patent/FR2257915A1/fr
Application granted granted Critical
Publication of FR2257915B1 publication Critical patent/FR2257915B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/4233—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive element [DOE] contributing to a non-imaging application
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0808—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more diffracting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/4272—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having plural diffractive elements positioned sequentially along the optical path
    • G02B27/4277—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having plural diffractive elements positioned sequentially along the optical path being separated by an air space
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/33—Acousto-optical deflection devices
FR7500778A 1974-01-12 1975-01-10 Expired FR2257915B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2401476A DE2401476A1 (de) 1974-01-12 1974-01-12 Anordnung zur modulation von licht
DE2431551A DE2431551C2 (de) 1974-07-01 1974-07-01 Anordnung zur Messung von Bewegungen und Geschwindigkeiten

Publications (2)

Publication Number Publication Date
FR2257915A1 FR2257915A1 (de) 1975-08-08
FR2257915B1 true FR2257915B1 (de) 1979-07-20

Family

ID=25766457

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7500778A Expired FR2257915B1 (de) 1974-01-12 1975-01-10

Country Status (5)

Country Link
JP (1) JPS5845687B2 (de)
CH (1) CH601799A5 (de)
FR (1) FR2257915B1 (de)
GB (1) GB1474049A (de)
NL (1) NL7500316A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110530283A (zh) * 2018-05-23 2019-12-03 宁波舜宇光电信息有限公司 结构光投射装置以及其制造方法

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157118A (en) * 1981-03-24 1982-09-28 Mitsutoyo Mfg Co Ltd Photoelectric type displacement detecting device
GB8320629D0 (en) * 1983-07-30 1983-09-01 Pa Consulting Services Displacement measuring apparatus
US4584484A (en) * 1983-10-03 1986-04-22 Hutchin Richard A Microscope for producing high resolution images without precision optics
GB8413955D0 (en) * 1984-05-31 1984-07-04 Pa Consulting Services Displacement measuring apparatus
DE3706277C2 (de) * 1986-02-28 1995-04-27 Canon Kk Drehungsmeßgeber
DE3633574A1 (de) * 1986-10-02 1988-04-14 Heidenhain Gmbh Dr Johannes Lichtelektrische winkelmesseinrichtung
GB8729246D0 (en) * 1987-12-15 1988-01-27 Renishaw Plc Opto-electronic scale-reading apparatus
US5029154A (en) * 1988-11-21 1991-07-02 Ricoh Company, Ltd. Optical reproducing apparatus
GB2239088B (en) * 1989-11-24 1994-05-25 Ricoh Kk Optical movement measuring method and apparatus
ATE100194T1 (de) * 1990-10-20 1994-01-15 Heidenhain Gmbh Dr Johannes Interferentielle messeinrichtung fuer wenigstens eine messrichtung.
AT395914B (de) * 1991-04-18 1993-04-26 Rsf Elektronik Gmbh Photoelektrische positionsmesseinrichtung
WO1993022615A1 (en) * 1992-05-05 1993-11-11 Bei Electronics, Inc. Apparatus for detecting relative movement
US5486923A (en) * 1992-05-05 1996-01-23 Microe Apparatus for detecting relative movement wherein a detecting means is positioned in the region of natural interference
JPH0727543A (ja) * 1993-07-12 1995-01-27 Canon Inc 光学式変位センサー
JP3028716B2 (ja) * 1993-09-29 2000-04-04 キヤノン株式会社 光学式変位センサ
GB9424969D0 (en) * 1994-12-10 1995-02-08 Renishaw Plc Opto-electronic scale reading apparatus
GB0004120D0 (en) 2000-02-23 2000-04-12 Renishaw Plc Opto-electronic scale reading apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110530283A (zh) * 2018-05-23 2019-12-03 宁波舜宇光电信息有限公司 结构光投射装置以及其制造方法

Also Published As

Publication number Publication date
NL7500316A (nl) 1975-07-15
FR2257915A1 (de) 1975-08-08
JPS5845687B2 (ja) 1983-10-12
GB1474049A (en) 1977-05-18
JPS50104037A (de) 1975-08-16
CH601799A5 (de) 1978-07-14

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