EP0265462A1 - Einrichtung zum verstellen eines lichtstrahls in einer auftreffebene - Google Patents

Einrichtung zum verstellen eines lichtstrahls in einer auftreffebene

Info

Publication number
EP0265462A1
EP0265462A1 EP87902401A EP87902401A EP0265462A1 EP 0265462 A1 EP0265462 A1 EP 0265462A1 EP 87902401 A EP87902401 A EP 87902401A EP 87902401 A EP87902401 A EP 87902401A EP 0265462 A1 EP0265462 A1 EP 0265462A1
Authority
EP
European Patent Office
Prior art keywords
coils
light beam
mirror
tilt
magnets
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Withdrawn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
EP87902401A
Other languages
German (de)
English (en)
French (fr)
Inventor
Werner Reis
Siegfried Cierlak
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.)
G Rodenstock Instrumente GmbH
Original Assignee
G Rodenstock Instrumente 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
Application filed by G Rodenstock Instrumente GmbH filed Critical G Rodenstock Instrumente GmbH
Publication of EP0265462A1 publication Critical patent/EP0265462A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/0075—Apparatus for testing the eyes; Instruments for examining the eyes provided with adjusting devices, e.g. operated by control lever
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F9/00802—Methods or devices for eye surgery using laser for photoablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F9/00821—Methods or devices for eye surgery using laser for coagulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/076—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by electrical means including means to transmit the movements, e.g. shafts or joints
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • G02B7/1821—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors for rotating or oscillating mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • G02B7/1822—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors comprising means for aligning the optical axis
    • G02B7/1827—Motorised alignment
    • G02B7/1828—Motorised alignment using magnetic means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
    • A61F2009/00863—Retina
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
    • A61F2009/00872—Cornea

Definitions

  • the invention relates to a device for adjusting a light beam in an impact plane according to the preamble of patent claim 1.
  • Devices of this type are required, for example, in so-called laser coagulators which are used in ophthalmology.
  • laser coagulators which are used in ophthalmology.
  • Means the preamble of claim 1 is for example the so-called. "Micromanipulator” melderin the "An ⁇ according to.
  • a mirror is moved pneumatically, the processing laser beam in Rich ⁇ deflects on the eye.
  • This mirror may Example ⁇ be one of the mirrors that deflects the operation and / or the aiming beam in the device described in WO 85/00966 or in DE-GM 7 225 429.
  • the known micromanipulator is not easily over a suitable electronic system can be remote controlled and / or programmed.
  • the response times of the manipulator may be "noticeable" during the operation.
  • the manipulation process is not always silent.
  • the invention has for its object to provide a device for adjusting a light beam in an impact plane, which allows fast, accurate and electronically controllable manipulation of the beam in an impact plane.
  • a solution to this problem according to the invention is characterized by its developments in the claims.
  • the object is achieved by continuing to assume a device in which a mirror deflecting the light beam is tilted or pivoted.
  • the mirror is attached to a tilt / swivel joint which is pretensioned to a basic position by a pretensioning device and is connected to magnets.
  • the magnets are located in a magnetic field generated by current-carrying coils.
  • the tilt of the mirror and thus the displacement of the Light beam in the impact plane is quick and noiseless.
  • the system has a defined basic position, in which, for example, the laser beam of an operation laser is directed precisely at the geometric center of the field, over which the laser beam can be shifted.
  • the device is controlled, for example via an electronic control, it is possible to bring the system into any desired basic position by means of a constant current. In any case, however, an exact manipulation of the light beam in the impact plane is possible, since the prestressed tilt / swivel joint is mounted with almost no play.
  • the circuit claimed in claim 4 increases the symmetry of the device according to the invention and " further reduces the risk of the occurrence of tilting moments.
  • the mirror By reversing the currents flowing through the coils the mirror can be rotated or tilted in both directions with a symmetrical arrangement (claim 5).
  • the device according to the invention can be controlled both by hand, for example via a control stick (claim 8) and by a controller (claim 11).
  • the control enables the impact point of the light beam to be programmed or, for example, to be controlled by an image processing device.
  • the rapid reaction of the device according to the invention makes it possible to make "real time” corrections, for example during a laser shot during laser treatment on the human eye.
  • Another advantage of the device according to the invention is i Claim 12 characterized: the "purely electrical control" of the beam shift allows the connection, for example, of a log printer or a storage unit with which the manipulations of the beam can be recorded. This can be important, for example, in ophthalmology in the event of subsequent claims for recourse etc.
  • the device according to the invention is particularly suitable for manipulating a laser beam in an eye examination and treatment device.
  • the laser is an argon laser for retina treatment, a neodymium-YAG laser for cutting in anterior eye media or an excimer or 3 ⁇ m laser for keratotomy.
  • FIG. 1 a and b show two exemplary embodiments of a device according to the invention.
  • Fig. 2 shows an embodiment of a joystick.
  • FIGS. 1 a and 1 b show two exemplary embodiments which differ essentially in the design of the pretensioning device which defines the basic position.
  • the two exemplary embodiments have a tilt / swivel joint 1, to which two holders 2, of which only one is shown in the figures, for a mirror 3 are fastened.
  • a light and, in particular, a laser beam 4 runs between the two holders 2, which is deflected by the mirror 3 and whose impact location is to be manipulated in an impact plane 5, only shown schematically.
  • the tilt / swivel joint which is only shown schematically, is designed such that it has a passage channel for the laser beam.
  • the joint 3 is movable in the direction of arrows 6 and 7; the resulting mirror movements in the direction of arrows 6 'and 7' shift the beam 4 in the plane 5 in the x / y direction.
  • a coil / magnet unit is provided, which is described in more detail below.
  • the same unit is provided for moving the joint 1 in the direction of the arrow 7, but this system has been omitted for reasons of clarity in the drawing.
  • Permanent magnets 9 are fastened to the joint 1 by means of rods 8 and are located in a B field which is generated by current-carrying coils 10.
  • the coils 10 are each connected to one another in such a way that a current flow in one direction results in a force which attracts one of the permanent magnets 9 and repels the other.
  • a pretensioning device is provided which defines a basic position of the joint 1 when the coils 10 are not energized and thus of the mirror 3.
  • the prestressing device consists of two springs 11 and in the exemplary embodiment according to FIG. 1 b, there are two further permanent magnets 12 which exert a "same-directional" force on the magnets 9.
  • FIG. 2 shows an embodiment of a control stick for the manual control of the device according to the invention.
  • the control stick has an operating plate 20, a ball socket 21, which allows displacement of the operating plate in the x / y direction and a magnet 22, which is connected to the ball socket 21.
  • field plates 23 are provided, with regard to their arrangement and connection, reference is made to the figure.
  • a pair of field plates 23 is connected to a coil configuration 10 of the device according to the invention via an intermediate amplifier (not shown).
  • FIG. 1 a it is possible to use a device according to FIG. 1 a for moving the joint 1 in one direction and a device according to FIG. 1 b in the other direction.
  • a device according to FIG. 1 a for moving the joint 1 in one direction and a device according to FIG. 1 b in the other direction.
  • FIG. Sticks of a different design can be used.
  • the "translation" between the movement of the control stick and the deflection of the laser beam can be changed.
  • the coils and the permanent magnets can also be interchanged, that is to say the coils can be arranged on the joint 1 without the function of the device according to the invention being changed.
  • the device according to the invention When using the device according to the invention in a laser with a slit lamp device, for example when guiding the beam through the microscope arm, it is particularly advantageous if one of the mirrors located in the microscope arm is tilted by the device according to the invention.

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Ophthalmology & Optometry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Vascular Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Biophysics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Laser Surgery Devices (AREA)
  • Position Input By Displaying (AREA)
  • Mechanical Optical Scanning Systems (AREA)
EP87902401A 1986-04-18 1987-04-18 Einrichtung zum verstellen eines lichtstrahls in einer auftreffebene Withdrawn EP0265462A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863613233 DE3613233A1 (de) 1986-04-18 1986-04-18 Einrichtung zum verstellen eines lichtstrahls in einer auftreffebene
DE3613233 1986-04-18

Publications (1)

Publication Number Publication Date
EP0265462A1 true EP0265462A1 (de) 1988-05-04

Family

ID=6299043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87902401A Withdrawn EP0265462A1 (de) 1986-04-18 1987-04-18 Einrichtung zum verstellen eines lichtstrahls in einer auftreffebene

Country Status (5)

Country Link
US (1) US4850687A (enrdf_load_stackoverflow)
EP (1) EP0265462A1 (enrdf_load_stackoverflow)
JP (1) JPH01500063A (enrdf_load_stackoverflow)
DE (1) DE3613233A1 (enrdf_load_stackoverflow)
WO (1) WO1987006358A1 (enrdf_load_stackoverflow)

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DE19754676A1 (de) * 1997-12-10 1999-06-17 Thomas Dipl Ing Frank Vorrichtung und Verfahren zur periodischen Ablenkung von Lichtstrahlen mit vom Betrag konstanter Ablenkgeschwindigkeit
EP0927901B1 (en) * 1997-12-29 2007-09-19 Perkin-Elmer Limited Adjustable mounting of optical components
EP0932064A1 (en) * 1997-12-29 1999-07-28 Perkin-Elmer Limited Adjustable mounting of optical components
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EP1388462A3 (de) * 2002-08-10 2006-07-19 Hella KGaA Hueck & Co. Stelleinrichtung und Stellverfahren für eine Lichteinheit eines Kraftfahrzeuges
RU2295743C2 (ru) * 2005-03-29 2007-03-20 Виктор Валентинович Кулалаев Способ оптической модуляции лучистого потока
US7388699B1 (en) 2005-07-11 2008-06-17 Coffee Curtis L Musical laser display device
US7806585B2 (en) * 2007-06-22 2010-10-05 Decagon Devices, Inc. Apparatus, method, and system for measuring water activity and weight
DE102007058563A1 (de) 2007-11-30 2009-06-04 Sentronic GmbH Gesellschaft für optische Meßsysteme Spektrometermesskopf zur Analyse von Kenngrößen flüssiger, pastöser oder fester Substanzen
US8764188B2 (en) 2011-10-21 2014-07-01 Kent Tabor Functional vision tester
EP2708308A1 (de) * 2012-09-14 2014-03-19 Trumpf Laser Marking Systems AG Laserbearbeitungsvorrichtung
CN120322354A (zh) * 2022-12-08 2025-07-15 海拉有限双合股份公司 车辆前照灯组件

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Title
See references of WO8706358A1 *

Also Published As

Publication number Publication date
JPH01500063A (ja) 1989-01-12
US4850687A (en) 1989-07-25
WO1987006358A1 (en) 1987-10-22
DE3613233C2 (enrdf_load_stackoverflow) 1989-04-06
DE3613233A1 (de) 1987-10-22

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