DE2640282A1 - Scanning mirror for optical instruments - has one swivel axis in direction of incident beam bundle and other perpendicular to it - Google Patents
Scanning mirror for optical instruments - has one swivel axis in direction of incident beam bundle and other perpendicular to itInfo
- Publication number
- DE2640282A1 DE2640282A1 DE19762640282 DE2640282A DE2640282A1 DE 2640282 A1 DE2640282 A1 DE 2640282A1 DE 19762640282 DE19762640282 DE 19762640282 DE 2640282 A DE2640282 A DE 2640282A DE 2640282 A1 DE2640282 A1 DE 2640282A1
- Authority
- DE
- Germany
- Prior art keywords
- mirror
- axis
- incident beam
- scanning mirror
- beam bundle
- 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- Withdrawn
Links
Classifications
-
- 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
- G02B26/0816—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 reflecting elements
-
- 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
- G02B26/10—Scanning systems
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
Description
Scanningspiegel für optische Geräte Scanning mirrors for optical devices
Die Erfindung betrifft einen Scanningspiegel für optische Geräte, insbesondere für eine Anordnung zur optischen Abtastung mikroskopischer Objekte, bei der Flächananteile einzelner Objektphasen ermittelt werden.The invention relates to a scanning mirror for optical devices, especially for an arrangement for optical scanning of microscopic objects, in which the area proportions of individual object phases are determined.
Es ist bereits eine Abtastmethode bekannt, bei der auf der Eeleuchtungsseite das Meßfeld ausgeblendet und durch das Objekt bewegt wird. Als Mittel hierzu wird ein Kippspiegel mit feststehender Leuchtfeldblende verwendet. Er ist vorzugsweise so ausgebildet, daß zugleich auch eine synchrone Abtastung auf der Beobachtungsseite e rfolgen kann. Die notwendige Kippung des SpiegeLs wird dadurch erreicht, daß er zusätzlich zu einer oszillierenden Bewegung eine weitere kontinuierliche Winkelbewegung senkrecht dazu ausführt. Zu diesem Zweck wird er einmal um eine in der Spiegel- und Strahleneinfalisebene befindliche Achse und zum anderen in eine senkrecht dazu in der Spiegelebene liegende Achse drehbar gelagert.A scanning method is already known in which on the lighting side the measuring field is hidden and moved through the object. As a means of doing this, a tilting mirror with a fixed field diaphragm is used. He is preferably designed so that at the same time synchronous scanning on the observation side e can succeed. The necessary tilting of the mirror is achieved by the fact that it in addition to an oscillating movement, another continuous angular movement executes perpendicular to it. For this purpose, he is once around a mirror in the and the plane of incidence of rays and on the other hand in an axis perpendicular to it The axis lying in the mirror plane is rotatably mounted.
Es hat sich gezeigt, daß diese bisher angewandte Art der Spiegellagerung gewisse Nachteile mit sich bringt.It has been shown that this previously used type of mirror mounting brings with it certain disadvantages.
So sind die Strahlenablenkungen in den beiden senkrecht zueinander liegenden Richtungen nicht proportional den Spiegeldrehungen um die entsprechenden Achsen. Die Bildzeilen und -spalten werden dadurch einseitig verzerrt und ergeben insgesamt ein Bild, bei dem die gegenüber- liegenden Kanten des einen Kantenpaares zueinander geneigt liegen und bei dem die Kanten des anderen Kantenpaares unterschiedliche Länge haben.So the beam deflections in the two are perpendicular to each other lying directions are not proportional to the mirror rotations around the corresponding Axles. The lines and columns of the image are thereby distorted on one side and result overall a picture in which the opposite lying edges of the one pair of edges are inclined to each other and in which the edges of the other Edge pairs have different lengths.
Aufgabe der vorliegenden Erfindung ist es, eine Anordnung zu schaffen, bei der die genannte Verzerrung weitgehend ausgeschaltet wird. Zu diesem Zweck wird ein Scanningspiegel der vorgenannten Art vorgeschlagen, dessen eine Achse in Richtung des einfallenden Strahlenbündels und dessen andere Achse senkrecht dazu in der Spiegelebene verläuft.The object of the present invention is to create an arrangement in which the aforementioned distortion is largely eliminated. To this end, will proposed a scanning mirror of the aforementioned type, one axis of which in the direction of the incident beam and its other axis perpendicular to it in the mirror plane runs.
Die Erfindung ist in der Zeichnung dargestellt. Es zeigen: Fig. la die bisher übliche Drehlagerung des Scanningspiegels, Fig. lb das zugehörige Bild der Lichtflecke in schematischer Darstellung, Fig. 2a die erfindungsgemäße Lagerung des Scanningspiegels, Fig. 2b das zugehörige Lichtfleckbild.The invention is shown in the drawing. They show: Fig. La the previously customary rotary bearing of the scanning mirror, Fig. Lb the associated image the light spots in a schematic representation, Fig. 2a the storage according to the invention of the scanning mirror, Fig. 2b the associated light spot image.
0 Der einfallende Lichtstrahl 1 wird am Spiegel 2 um 90 abgelenkt. Gemäß Fig. la verläuft die eine Spiegelachse 4 in der Strahleneinfallsebene sowie in der Ebene des Spiegels 2. Die zweite Achse 3, um die der Spiegel ebenfalls schwingen kann, liegt senkrecht dazu in der Spiegelebene. Fig. ib zeigt die bei der Lagerung nach Fig. 0 The incident light beam 1 is deflected by 90 at mirror 2. According to FIG. 1 a, the one mirror axis 4 runs in the plane of incidence of rays as well in the plane of the mirror 2. The second axis 3, around which the mirror also oscillate can, lies perpendicular to it in the mirror plane. Fig. Ib shows the storage according to Fig.
la entstehende Verzerrung des Bildes der Lichtflecke.la resulting distortion of the image of the light spots.
Demgegenüber wird bei dem erfindungsgemäßen Spiegel nach Fig. 2a, dessen eine Achse 4a sich in Richtung der einfallenden Strahlen erstreckt und dessen andere Achse 3a in gleicher Weise wie die Achse 3 verläuft, eine wesent- liche Verbesserung der Symmetrie des Lichtfleckbildes (Fig. 2b) erzielt. Die obere und untere Begrenzungskante sind ebenso wie die seitlichen Kanten gleich lang.In contrast, in the mirror according to the invention according to FIG. 2a, one axis 4a of which extends in the direction of the incident rays and of which other axis 3a runs in the same way as axis 3, an essential liche Improvement of the symmetry of the light spot image (Fig. 2b) achieved. The top and The lower boundary edge, like the side edges, are of the same length.
Letztere sind allerdings leicht gekrümmt, was sich jedoch wegen des geringeren Ausmaßes und wegen der Symmetrie weniger nachteilig und nur außerhalb des Bildzentrums auswirkt, im Gegensatz zu der Verzerrung nach der Ausführung gemäß Fig. 1a und 1b.The latter are slightly curved, however, because of the to a lesser extent and because of the symmetry less disadvantageous and only outside of the image center, in contrast to the distortion after the execution according to Figures 1a and 1b.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762640282 DE2640282A1 (en) | 1976-09-08 | 1976-09-08 | Scanning mirror for optical instruments - has one swivel axis in direction of incident beam bundle and other perpendicular to it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762640282 DE2640282A1 (en) | 1976-09-08 | 1976-09-08 | Scanning mirror for optical instruments - has one swivel axis in direction of incident beam bundle and other perpendicular to it |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2640282A1 true DE2640282A1 (en) | 1978-03-09 |
Family
ID=5987366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19762640282 Withdrawn DE2640282A1 (en) | 1976-09-08 | 1976-09-08 | Scanning mirror for optical instruments - has one swivel axis in direction of incident beam bundle and other perpendicular to it |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2640282A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4256364A (en) * | 1978-02-20 | 1981-03-17 | Canon Kabushiki Kaisha | Two-dimensional scanning optical system with distortion correction |
DE3613233A1 (en) * | 1986-04-18 | 1987-10-22 | Rodenstock Instr Gmbh | DEVICE FOR ADJUSTING A LIGHT BEAM IN A MEETING LEVEL |
EP0471291A2 (en) * | 1990-08-07 | 1992-02-19 | Omron Corporation | Optical scanner |
-
1976
- 1976-09-08 DE DE19762640282 patent/DE2640282A1/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4256364A (en) * | 1978-02-20 | 1981-03-17 | Canon Kabushiki Kaisha | Two-dimensional scanning optical system with distortion correction |
DE3613233A1 (en) * | 1986-04-18 | 1987-10-22 | Rodenstock Instr Gmbh | DEVICE FOR ADJUSTING A LIGHT BEAM IN A MEETING LEVEL |
EP0471291A2 (en) * | 1990-08-07 | 1992-02-19 | Omron Corporation | Optical scanner |
EP0471291A3 (en) * | 1990-08-07 | 1992-04-22 | Omron Corporation | Optical scanner |
US5245463A (en) * | 1990-08-07 | 1993-09-14 | Omron Corporation | Optical scanner |
US5444565A (en) * | 1990-08-07 | 1995-08-22 | Omron Corporation | Optical scanner |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8125 | Change of the main classification |
Ipc: G02B 27/17 |
|
8130 | Withdrawal |