JPH01240863A - Method and apparatus for generating speckle pattern - Google Patents

Method and apparatus for generating speckle pattern

Info

Publication number
JPH01240863A
JPH01240863A JP63067266A JP6726688A JPH01240863A JP H01240863 A JPH01240863 A JP H01240863A JP 63067266 A JP63067266 A JP 63067266A JP 6726688 A JP6726688 A JP 6726688A JP H01240863 A JPH01240863 A JP H01240863A
Authority
JP
Japan
Prior art keywords
diffusion plate
speckle pattern
diffusion
12b
12a
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.)
Pending
Application number
JP63067266A
Inventor
Yoshinaga Aizu
Koji Ogino
Toshiaki Sugita
Original Assignee
Kowa Co
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 Kowa Co filed Critical Kowa Co
Priority to JP63067266A priority Critical patent/JPH01240863A/en
Publication of JPH01240863A publication Critical patent/JPH01240863A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To enable generation of a speckle pattern making a boiling motion depending on none of a lighting optical system and light receiving optical system, by building up a diffusion plate unit with two diffusion plates arranged apart at a specified interval to move the plates relatively.
CONSTITUTION: After converged with a lens 11, a laser beam from a laser light source 10 is made to irradiate a diffusion plate 12a. Diffusively transmitted light subjected to a random phase modulation with the diffusion plate 12a further irradiates a diffusion plate 12b. The diffusion plates 12a and 12b are made movable relative to each other within surfaces thereof. Light transmitted through the diffusion plate 12b forms a speckle pattern in a diffraction area or an image area. The speckle pattern thus obtained is detected with a photo detector 15 through a detection opening 14 and a detection output thereof is inputted into a signal processing section 16.
COPYRIGHT: (C)1989,JPO&Japio
JP63067266A 1988-03-23 1988-03-23 Method and apparatus for generating speckle pattern Pending JPH01240863A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63067266A JPH01240863A (en) 1988-03-23 1988-03-23 Method and apparatus for generating speckle pattern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63067266A JPH01240863A (en) 1988-03-23 1988-03-23 Method and apparatus for generating speckle pattern

Publications (1)

Publication Number Publication Date
JPH01240863A true JPH01240863A (en) 1989-09-26

Family

ID=13339987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63067266A Pending JPH01240863A (en) 1988-03-23 1988-03-23 Method and apparatus for generating speckle pattern

Country Status (1)

Country Link
JP (1) JPH01240863A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009530604A (en) * 2006-03-14 2009-08-27 プライム センス リミティド Light field to depth change for three-dimensional detection
US8150142B2 (en) 2007-04-02 2012-04-03 Prime Sense Ltd. Depth mapping using projected patterns
US8982182B2 (en) 2010-03-01 2015-03-17 Apple Inc. Non-uniform spatial resource allocation for depth mapping
US9030528B2 (en) 2011-04-04 2015-05-12 Apple Inc. Multi-zone imaging sensor and lens array
US9066087B2 (en) 2010-11-19 2015-06-23 Apple Inc. Depth mapping using time-coded illumination
US9098931B2 (en) 2010-08-11 2015-08-04 Apple Inc. Scanning projectors and image capture modules for 3D mapping
US9131136B2 (en) 2010-12-06 2015-09-08 Apple Inc. Lens arrays for pattern projection and imaging
US9157790B2 (en) 2012-02-15 2015-10-13 Apple Inc. Integrated optoelectronic modules with transmitter, receiver and beam-combining optics for aligning a beam axis with a collection axis
US9582889B2 (en) 2009-07-30 2017-02-28 Apple Inc. Depth mapping based on pattern matching and stereoscopic information

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009530604A (en) * 2006-03-14 2009-08-27 プライム センス リミティド Light field to depth change for three-dimensional detection
US8150142B2 (en) 2007-04-02 2012-04-03 Prime Sense Ltd. Depth mapping using projected patterns
US9582889B2 (en) 2009-07-30 2017-02-28 Apple Inc. Depth mapping based on pattern matching and stereoscopic information
US8982182B2 (en) 2010-03-01 2015-03-17 Apple Inc. Non-uniform spatial resource allocation for depth mapping
US9098931B2 (en) 2010-08-11 2015-08-04 Apple Inc. Scanning projectors and image capture modules for 3D mapping
US9215449B2 (en) 2010-11-19 2015-12-15 Apple Inc. Imaging and processing using dual clocks
US9066087B2 (en) 2010-11-19 2015-06-23 Apple Inc. Depth mapping using time-coded illumination
US9131136B2 (en) 2010-12-06 2015-09-08 Apple Inc. Lens arrays for pattern projection and imaging
US9167138B2 (en) 2010-12-06 2015-10-20 Apple Inc. Pattern projection and imaging using lens arrays
US9030528B2 (en) 2011-04-04 2015-05-12 Apple Inc. Multi-zone imaging sensor and lens array
US9157790B2 (en) 2012-02-15 2015-10-13 Apple Inc. Integrated optoelectronic modules with transmitter, receiver and beam-combining optics for aligning a beam axis with a collection axis
US9651417B2 (en) 2012-02-15 2017-05-16 Apple Inc. Scanning depth engine

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