EP1421779A1 - Camera de balayage - Google Patents

Camera de balayage

Info

Publication number
EP1421779A1
EP1421779A1 EP02754414A EP02754414A EP1421779A1 EP 1421779 A1 EP1421779 A1 EP 1421779A1 EP 02754414 A EP02754414 A EP 02754414A EP 02754414 A EP02754414 A EP 02754414A EP 1421779 A1 EP1421779 A1 EP 1421779A1
Authority
EP
European Patent Office
Prior art keywords
micromirror
scanning camera
sensor
opto
mirror
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Withdrawn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
EP02754414A
Other languages
German (de)
English (en)
Inventor
Gerhard Bock
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.)
Gigaset Communications GmbH
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1421779A1 publication Critical patent/EP1421779A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
    • H04N3/08—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector

Definitions

  • the invention relates to a so-called scanning camera.
  • the opto-electrical image sensors used today in electronic cameras or digital cameras, ca corder and video telephones are based on semiconductor chips with an array of light-sensitive elements, so-called pixels.
  • a lens optic is provided for imaging an object on this sensor, which in the simplest case consists of a single lens.
  • Such optics are subject to distortions, require focusing or are bound to a fixed distance range, and their resolution is limited.
  • the manufacturers of the devices mentioned at the outset strive to reduce weight, body volume and costs.
  • the focal length of the lens and the distance of the lens from the image sensor are fixed by the sensor diagonal and the angle of the camera.
  • a further miniaturization by reducing the sensor diagonal and thus the pixel size requires a significantly higher quality and thus more expensive optics.
  • the invention has for its object to provide a smaller, yet inexpensive camera.
  • a lens is no longer required and all optical properties can be significantly improved.
  • the construction volume in the scanning camera according to the invention is drastically reduced compared to the conventional cameras with optics and sensor array.
  • FIG. 1 shows a basic illustration of the scanning camera according to the invention
  • Figure 4 shows an implementation of the scanning camera according to the invention on a chip.
  • the scanning camera (SC) uses a novel image recording system.
  • a biaxially tiltable or swiveling micromirror scans the surroundings or an object in a grid pattern and directs the light beam onto, for example, a single light detector element or opto-electrical sensor.
  • the scanning camera SC has a point-shaped image pickup sensor SE.
  • the sensor SE consists of an element or a pixel. In particular in the case of a color camera, several pixels can be provided which are sensitive to the different colors.
  • the image pickup sensor SE can be implemented, for example, by a photo transistor, a CCD chip or by a CMOS module.
  • the scanning camera SC has a deflection unit which is implemented by a micromirror SP.
  • the micromirror SP scans an object OB two-dimensionally.
  • the micromirror SP is designed to be tiltable in two axes. det. These two tilting axes are preferably perpendicular to one another. This tilting movement is symbolically represented in FIG. 1 by the two double arrows (not designated in more detail).
  • the scanned solid angle is directed or reflected on the sensor SE. As a result, all elements of an image to be recorded are scanned using the time-division multiplex method and converted into image data by the sensor SE.
  • the deflection unit or the micromirror SP can be implemented, for example, by so-called micromechanical elements (MEMS arrangements).
  • MEMS arrangements micromechanical elements
  • An overview of such components can be found, for example, on the Internet at the URL http: // ems .colorado.edu / cl. res .ppt / ppt / oe.review.
  • the light-sensitive sensor SE is reduced to only a single pixel, all elements of an image to be recorded or an object OB being recorded in time-division multiplex.
  • collimation optics can be dispensed with, which means that focusing on the image distance is also eliminated.
  • FIG. 2 shows a possible form of implementation for the micromirror SP using a micromechanical element.
  • the micromechanical element preferably consists of silicon, from which a movable tongue Z is etched out.
  • the tongue Z can be deflected perpendicular to the plane of the drawing, for example with a frequency of approximately 30 to 40 kHz. This direction of movement is symbolically represented by a double arrow P1.
  • the micromirror SP shown in FIG. 2 can be rotated further in the plane of the drawing, for example at a frequency of 50 Hz. This direction of movement is symbolically represented by a double arrow P2.
  • FIG. 1 A further implementation possibility for the micromirror SP is shown in FIG.
  • a mirror element SPM is the Art movably connected on two sides with a base body made of silicon, so that this element SPM can be deflected two-dimensionally.
  • the oscillation frequencies are, for example, the same as in FIG. 2.
  • FIG. 4 shows a particularly preferred embodiment of the scanning camera SC according to the invention.
  • the micromirror SP and the image recording sensor SE are arranged in one plane.
  • Micromirror SP and image recording sensor SE can be produced side by side, for example, as micromechanical elements on an integrated module, a chip CP.
  • a deflection mirror US is provided for deflecting a light beam LS reflected by the micromirror SP onto the sensor SE.
  • the chip CP can be arranged in a recess in a housing GH, and the opening can be covered by a glass plate GP.
  • the light beam LS falling through the glass plate GP onto the mirror SP is then directed onto the sensor SE via the deflecting mirror US.
  • the deflecting mirror is preferably implemented by partially reflecting the glass plate GP.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Studio Devices (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)

Abstract

La présente invention concerne une caméra de balayage (SC) comprenant un micromiroir mobile bidimensionnel (SP) conçu pour balayer un objet (OB) et pour le représenter sur un capteur opto-électrique stigmatique (SE) qui est conçu pour transformer une image balayée par multiplexage par répartition dans le temps en données d'images électriques . Ce micromiroir (SP) et ce capteur opto-électrique (SE) sont placés dans un plan. Un miroir de déviation (US) est placé sur le trajet optique entre le micromiroir (SP) et le capteur opto-électrique (SE).
EP02754414A 2001-08-28 2002-07-23 Camera de balayage Withdrawn EP1421779A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10141908 2001-08-28
DE10141908 2001-08-28
PCT/DE2002/002703 WO2003028363A1 (fr) 2001-08-28 2002-07-23 Camera de balayage

Publications (1)

Publication Number Publication Date
EP1421779A1 true EP1421779A1 (fr) 2004-05-26

Family

ID=7696739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02754414A Withdrawn EP1421779A1 (fr) 2001-08-28 2002-07-23 Camera de balayage

Country Status (5)

Country Link
US (1) US20040207744A1 (fr)
EP (1) EP1421779A1 (fr)
JP (1) JP4018631B2 (fr)
CN (1) CN1287585C (fr)
WO (1) WO2003028363A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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CN101455045B (zh) * 2006-05-02 2013-02-06 艾利森电话股份有限公司 一种调度无线通信网络中的用户设备的方法及一种基站

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IL165212A (en) * 2004-11-15 2012-05-31 Elbit Systems Electro Optics Elop Ltd Device for scanning light
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US8508098B2 (en) * 2006-12-03 2013-08-13 Maradin Technologies Ltd. Gimbaled scanning micro-mirror actuation scheme and architecture
WO2009147654A1 (fr) * 2008-06-02 2009-12-10 Maradin Technologies Ltd. Appareil de micro-miroir de balayage à la cardan
EP2435355B1 (fr) * 2009-05-29 2018-10-24 DigitalOptics Corporation MEMS Isolation mécanique pour contacts électriques de microsystème électromécanique
US9253360B2 (en) 2011-07-15 2016-02-02 Ziva Corporation, Inc. Imager
AU2013219966B2 (en) 2012-02-15 2015-04-02 Apple Inc. Scanning depth engine
CN104221058B (zh) 2012-03-22 2017-03-08 苹果公司 装有万向接头的扫描镜阵列
CN104520750B (zh) 2012-07-26 2018-02-23 苹果公司 双轴式扫描镜
DE112013005128T5 (de) 2012-10-23 2015-08-13 Apple Inc. Produktion mikromechanischer Vorrichtungen
US9835853B1 (en) 2014-11-26 2017-12-05 Apple Inc. MEMS scanner with mirrors of different sizes
US9784838B1 (en) 2014-11-26 2017-10-10 Apple Inc. Compact scanner with gimbaled optics
US9798135B2 (en) 2015-02-16 2017-10-24 Apple Inc. Hybrid MEMS scanning module
US9897801B2 (en) 2015-09-30 2018-02-20 Apple Inc. Multi-hinge mirror assembly
US9703096B2 (en) 2015-09-30 2017-07-11 Apple Inc. Asymmetric MEMS mirror assembly
US10488652B2 (en) 2016-09-21 2019-11-26 Apple Inc. Prism-based scanner
KR20220027246A (ko) 2019-08-18 2022-03-07 애플 인크. 전자기 작동을 갖는 힘 밸런싱된 마이크로미러

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FR2703475A1 (fr) * 1993-03-30 1994-10-07 Foulgoc Patrick Dispositif de projection et de prise de vue miniaturisé.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101455045B (zh) * 2006-05-02 2013-02-06 艾利森电话股份有限公司 一种调度无线通信网络中的用户设备的方法及一种基站

Also Published As

Publication number Publication date
JP4018631B2 (ja) 2007-12-05
WO2003028363A1 (fr) 2003-04-03
US20040207744A1 (en) 2004-10-21
CN1287585C (zh) 2006-11-29
CN1550099A (zh) 2004-11-24
JP2005504487A (ja) 2005-02-10

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