NL7500316A - DEVICE FOR MODULATION OF LIGHT. - Google Patents

DEVICE FOR MODULATION OF LIGHT.

Info

Publication number
NL7500316A
NL7500316A NL7500316A NL7500316A NL7500316A NL 7500316 A NL7500316 A NL 7500316A NL 7500316 A NL7500316 A NL 7500316A NL 7500316 A NL7500316 A NL 7500316A NL 7500316 A NL7500316 A NL 7500316A
Authority
NL
Netherlands
Prior art keywords
modulation
light
Prior art date
Application number
NL7500316A
Other languages
Dutch (nl)
Original Assignee
Leitz Ernst 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/en
Priority claimed from DE2431551A external-priority patent/DE2431551C2/en
Application filed by Leitz Ernst Gmbh filed Critical Leitz Ernst Gmbh
Publication of NL7500316A publication Critical patent/NL7500316A/en

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
NL7500316A 1974-01-12 1975-01-10 DEVICE FOR MODULATION OF LIGHT. NL7500316A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2401476A DE2401476A1 (en) 1974-01-12 1974-01-12 Light modulation system - has three successive diffracting elements at specified spacings
DE2431551A DE2431551C2 (en) 1974-07-01 1974-07-01 Arrangement for measuring movements and speeds

Publications (1)

Publication Number Publication Date
NL7500316A true NL7500316A (en) 1975-07-15

Family

ID=25766457

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7500316A NL7500316A (en) 1974-01-12 1975-01-10 DEVICE FOR MODULATION OF LIGHT.

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029154A (en) * 1988-11-21 1991-07-02 Ricoh Company, Ltd. Optical reproducing apparatus

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 (en) * 1986-02-28 1995-04-27 Canon Kk Rotation encoder
DE3633574A1 (en) * 1986-10-02 1988-04-14 Heidenhain Gmbh Dr Johannes LIGHT ELECTRIC ANGLE MEASURING DEVICE
GB8729246D0 (en) * 1987-12-15 1988-01-27 Renishaw Plc Opto-electronic scale-reading apparatus
GB2239088B (en) * 1989-11-24 1994-05-25 Ricoh Kk Optical movement measuring method and apparatus
ATE100194T1 (en) * 1990-10-20 1994-01-15 Heidenhain Gmbh Dr Johannes INTERFERENTIAL MEASUREMENT DEVICE FOR AT LEAST ONE MEASUREMENT DIRECTION.
AT395914B (en) * 1991-04-18 1993-04-26 Rsf Elektronik Gmbh PHOTOELECTRIC POSITION MEASURING DEVICE
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 (en) * 1993-07-12 1995-01-27 Canon Inc Optical displacement sensor
JP3028716B2 (en) * 1993-09-29 2000-04-04 キヤノン株式会社 Optical displacement sensor
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
CN110530283A (en) * 2018-05-23 2019-12-03 宁波舜宇光电信息有限公司 Project structured light device and its manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029154A (en) * 1988-11-21 1991-07-02 Ricoh Company, Ltd. Optical reproducing apparatus

Also Published As

Publication number Publication date
FR2257915A1 (en) 1975-08-08
JPS5845687B2 (en) 1983-10-12
GB1474049A (en) 1977-05-18
JPS50104037A (en) 1975-08-16
CH601799A5 (en) 1978-07-14
FR2257915B1 (en) 1979-07-20

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