WO1998053273A1 - Dispositif de positionnement a laser - Google Patents
Dispositif de positionnement a laser Download PDFInfo
- Publication number
- WO1998053273A1 WO1998053273A1 PCT/FR1998/000993 FR9800993W WO9853273A1 WO 1998053273 A1 WO1998053273 A1 WO 1998053273A1 FR 9800993 W FR9800993 W FR 9800993W WO 9853273 A1 WO9853273 A1 WO 9853273A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- orientation
- beams
- laser
- optical
- optical assembly
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
- G01C15/004—Reference lines, planes or sectors
Definitions
- the present invention relates to a laser positioning device creating a reference beam for positioning a subject or an object in the medical or industrial field. 5 It is necessary, in industry or in the medical field, to identify subjects (objects or people) to carry out operations or treatments.
- positioning devices are used to generate a light mark in the space used for positioning or repositioning patients with respect to different therapy devices. These positioning devices are fixedly mounted in a radiotherapy room.
- these positioning devices ensure a high level of security for medical interventions by improving the identification of the areas or points to be treated.
- white light positioning devices comprising sets of slots placed in the path of the light beams. However, these devices did not allow positioning of high resolution.
- a third evolution of the tracking devices consisted in using a laser diode emitting in the red. (Wavelengths of 632.8 nm and 670 nm).
- the present invention aims to remedy these drawbacks and proposes to create a laser positioning device comprising a doubled infrared laser crystal, making it possible to ensure very precise positioning or location without exceeding the authorized transmission powers.
- the invention relates to a laser positioning device, characterized in that it comprises: A support and orientation means connected to a fixed part (wall, partition, ceiling),
- an optical assembly pivotally mounted on the support and orientation means and comprising a laser source formed by an infrared laser crystal and a frequency doubler for emitting green light, and at the output of the laser source, a means beam return and a group of two mirrors mounted in series in the beam, the first mirror being semi-transparent and each mirror of this group being each followed by an optical system spreading the beams according to two perpendicular fans and adjustment means to adjust the orientation of the beams leaving the optical assembly.
- the positioning device allows precise location even in poor visibility conditions without using a large power beam with means that are simple to produce and implement.
- the device is very compact thanks to its particularly efficient light source. This reduction in size results in a very significant reduction in the mechanical means of adjustment and proper positioning of the beams.
- the means of support and orientation is formed by a plate connected integrally to the fixed part carrying a console formed by a lug fixed in an adjustable manner to the plate and by a base itself carrying the optical assembly, orientable around an axis.
- the optical systems spreading the beams are two adjustable cylindrical lenses.
- the optical assembly is mounted in a turret formed of a base carrying a frame receiving in an adjustable manner the various deflection mirrors and the means of orientation of the optical beams, at the output of the laser source, the assembly being covered with '' a hood fitted with a window.
- FIG. 1 is a perspective view of a solid laser positioning device according to the invention
- FIG. 2 is a view in vertical axial section of the positioning device according to FIG. 1,
- FIG. 3 is a detail view of the laser source.
- the solid laser positioning device comprises a support and orientation means carrying an optical assembly which is itself orientable and adjustable.
- the support and orientation means consists of a fixing plate 1 connected integrally to a fixed part 2, for example a building (wall, ceiling, column) carrying an adjustable console 3 in its orientation.
- This console 3 consists of a tab 31 mounted on the plate 1 by fixing and adjusting means and a base 32 carrying the optical assembly.
- the console 2 is adjusted relative to the plate 1, in two directions, by connections with oblong holes 311, 312 of the tab 31 cooperating with bosses (not shown) belonging to the plate 1.
- the blocking once the orientation achieved, is done by screws 313, 314.
- This optical assembly is integrated in a turret 4 pivotally mounted about an axis ZZ in the base 32; rotation is controlled and / or blocked using a screw 33 provided in the base.
- the turret 4 is formed from a base 41 provided with a frame formed by two flanges 42 connected by spacers 43 and carrying the optical assembly: the laser source 50, the deflection mirrors 51, 52, 53, 54 and the adjustment means.
- the optical path includes a first deflection mirror 51 which returns the beam emitted on a second deflection mirror 52.
- the beam 52 attacks a set of two mirrors 53, 54 of which the first is semi-transparent; it returns part 55 of the beam and transmits the other part 56.
- the second mirror 54 returns a beam 56.
- the beams 55, 56 pass through optical systems 57, 58 which spread out each beam to form a light fan preferably following a flat surface.
- optical systems 57, 58 which spread out each beam to form a light fan preferably following a flat surface.
- These are for example cylindrical lenses whose axes are perpendicular. These two flat surfaces are perpendicular to form a cross on the positioning point.
- FIG. 3 shows in more detail the laser source 50 comprising, in an envelope 501, a laser diode 502 emitting in the infrared range, and whose beam is focused by a lens 503 to attack a YAG crystal 504 whose input is provided with a dichroic mirror 505 and the output of an output mirror 506. Downstream of the crystal 504 there is an intercavity frequency doubler 507 which transforms infrared light into visible green light.
- a focusing objective 508 directs the beam towards the exit window 509.
- the optical assembly is covered by a cover 43 provided with a window 44 for the exit of the beams 55, 56.
- the optical assembly is rotatably mounted by the base 22.
- the positioning and adjustment of the beams 55, 56 is done by the mirrors 52, 53, using the adjustment screws 521, 522, 523 appearing on the side of the chassis 31 (FIG. 1).
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Laser Surgery Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002290677A CA2290677A1 (fr) | 1997-05-23 | 1998-05-19 | Dispositif de positionnement a laser |
JP55004698A JP2001525936A (ja) | 1997-05-23 | 1998-05-19 | 医療の分野において被験体あるいは対象物を位置決めするための参照ビームを発生するレーザ位置決め装置 |
AU77744/98A AU7774498A (en) | 1997-05-23 | 1998-05-19 | Laser positioning device |
EP98925740A EP0983484A1 (fr) | 1997-05-23 | 1998-05-19 | Dispositif de positionnement a laser |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR97/06316 | 1997-05-23 | ||
FR9706316A FR2763676B1 (fr) | 1997-05-23 | 1997-05-23 | Dispositif de positionnement a laser creant un faisceau de repere servant a positionner un sujet ou un objet dans le domaine medical ou industriel |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998053273A1 true WO1998053273A1 (fr) | 1998-11-26 |
Family
ID=9507166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/000993 WO1998053273A1 (fr) | 1997-05-23 | 1998-05-19 | Dispositif de positionnement a laser |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0983484A1 (fr) |
JP (1) | JP2001525936A (fr) |
AU (1) | AU7774498A (fr) |
CA (1) | CA2290677A1 (fr) |
FR (1) | FR2763676B1 (fr) |
WO (1) | WO1998053273A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7134211B2 (en) | 2004-03-18 | 2006-11-14 | Black & Decker Inc. | Laser level |
EP2208018A1 (fr) * | 2007-11-02 | 2010-07-21 | Robert Bosch Tool Corporation | Dispositif de mise à niveau utilisant un laser à faisceau vert |
WO2012000714A1 (fr) * | 2010-07-02 | 2012-01-05 | Robert Bosch Gmbh | Dispositif de création d'un marquage laser |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA995175B (en) * | 1999-02-09 | 2001-02-13 | Nigel Iivari Anderson | Laser survey device. |
KR101985749B1 (ko) * | 2018-06-18 | 2019-06-04 | 장미희 | 범용성이 향상된 계측기기용 마운트 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4703563A (en) * | 1985-02-20 | 1987-11-03 | Nippon Power Engineering Co., Ltd. | Laser measuring device |
EP0382304A1 (fr) * | 1989-02-10 | 1990-08-16 | Koninklijke Philips Electronics N.V. | Dispositif et procédé pour doubler la fréquence d'une source lumineuse |
US5539990A (en) * | 1995-05-30 | 1996-07-30 | Le; Mike | Three-dimensional optical levelling, plumbing and angle-calibrating instrument |
EP0729053A2 (fr) * | 1995-02-22 | 1996-08-28 | MICRO ITALIANA S.p.A. | Dispositif pour la projection d'un faisceau plan de rayons laser divergents |
-
1997
- 1997-05-23 FR FR9706316A patent/FR2763676B1/fr not_active Expired - Fee Related
-
1998
- 1998-05-19 WO PCT/FR1998/000993 patent/WO1998053273A1/fr not_active Application Discontinuation
- 1998-05-19 EP EP98925740A patent/EP0983484A1/fr not_active Withdrawn
- 1998-05-19 JP JP55004698A patent/JP2001525936A/ja active Pending
- 1998-05-19 AU AU77744/98A patent/AU7774498A/en not_active Abandoned
- 1998-05-19 CA CA002290677A patent/CA2290677A1/fr not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4703563A (en) * | 1985-02-20 | 1987-11-03 | Nippon Power Engineering Co., Ltd. | Laser measuring device |
EP0382304A1 (fr) * | 1989-02-10 | 1990-08-16 | Koninklijke Philips Electronics N.V. | Dispositif et procédé pour doubler la fréquence d'une source lumineuse |
EP0729053A2 (fr) * | 1995-02-22 | 1996-08-28 | MICRO ITALIANA S.p.A. | Dispositif pour la projection d'un faisceau plan de rayons laser divergents |
US5539990A (en) * | 1995-05-30 | 1996-07-30 | Le; Mike | Three-dimensional optical levelling, plumbing and angle-calibrating instrument |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7134211B2 (en) | 2004-03-18 | 2006-11-14 | Black & Decker Inc. | Laser level |
US7310886B2 (en) | 2004-03-18 | 2007-12-25 | Black & Decker Inc. | Laser level |
US7481002B2 (en) | 2004-03-18 | 2009-01-27 | Black & Decker Inc. | Laser level |
EP2208018A1 (fr) * | 2007-11-02 | 2010-07-21 | Robert Bosch Tool Corporation | Dispositif de mise à niveau utilisant un laser à faisceau vert |
EP2208018A4 (fr) * | 2007-11-02 | 2011-03-30 | Bosch Tool Corp | Dispositif de mise à niveau utilisant un laser à faisceau vert |
US8011105B2 (en) | 2007-11-02 | 2011-09-06 | Robert Bosch Tool Corporation | Green beam laser level device |
WO2012000714A1 (fr) * | 2010-07-02 | 2012-01-05 | Robert Bosch Gmbh | Dispositif de création d'un marquage laser |
Also Published As
Publication number | Publication date |
---|---|
EP0983484A1 (fr) | 2000-03-08 |
AU7774498A (en) | 1998-12-11 |
FR2763676A1 (fr) | 1998-11-27 |
FR2763676B1 (fr) | 1999-07-23 |
JP2001525936A (ja) | 2001-12-11 |
CA2290677A1 (fr) | 1998-11-26 |
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