JP6602841B2 - Microscope with combined pinch protection and light protection cover - Google Patents

Description

  The present invention is a microscope, comprising a stand base, an objective lens revolver that can rotate about a rotation axis, and a revolver support that supports the objective lens revolver, and the objective lens is provided via the revolver support. The present invention relates to a microscope in which a revolver is supported by the stand base so as to be movable in the direction of the optical axis of the microscope relative to the stand base. When the revolver support moves, the size of the intermediate space between the stand base, the revolver support, and the objective lens revolver changes. The objective lens revolver is attached to the revolver support so that the optical axis of the microscope and the rotation axis of the objective lens revolver extend with an inclination relative to each other.

  In a microscope, it is necessary to adjust the distance between the object and the objective lens of the microscope for focusing on the object. This can be done, for example, by allowing the revolver support to which the objective lens revolver is attached to run relative to the stand base and thus relative to the microscope table. In this case, there is usually a lower position where the revolver support contacts the stand base or has only a small distance to the stand base. When the revolver support is moved upward, an intermediate space is generated between the revolver support and the stand base. This intermediate space is usually large so that the operator's fingers can enter without problems. This leads to the problem that the fingers can be pinched between the revolver support and the stand base during the subsequent lowering movement of the revolver support. Another problem with such an intermediate space is that light can leak out through the intermediate space. This is particularly dangerous when the laser beam is used for observation and / or processing and / or sample manipulation.

  A German upright microscope is known from DE 102007028402. In this microscope, a disc spring-like element is arranged on the objective lens revolver or the microscope table as a pinch protection device. This disc spring-like element is arranged inside the intermediate space and thus closes the intermediate space so that the operator cannot insert his hand into the intermediate space. In particular, the problem of light protection from laser beams is not discussed at all.

  This pinch protection device has the disadvantage that the pinch protection device cannot be used easily in an inverse microscope (inverse Mikroskop) with an objective lens revolver supported at an angle. . In the objective lens revolver supported in such an inclined manner, the objective lens revolver normally protrudes beyond the revolver support on the side, and thus such a disc spring is easily provided on the lower surface of the revolver support. It cannot be installed.

  The object of the present invention is to provide a microscope in which the intermediate space produced during focusing is reliably and reliably closed, providing protection against insertion of the user's hand as well as against leakage light, in particular laser light. is there.

  This problem is solved by a microscope having the features of claim 1. Advantageous embodiments of the invention are described in the dependent claims.

  According to the present invention, the microscope has at least a first cover and a second cover. In this case, the first cover is attached to the stand base, and is formed between these two elements when the revolver support moves relative to the stand base, between the stand base and the revolver support. At least partly close the intermediate space. The first cover has a notch. In this notch, when the revolver support is disposed at the lower position, a partial region of the objective lens revolver and / or a partial region of the revolver support is disposed. On the other hand, the second cover is attached to the objective lens revolver and / or the revolver support, and at least the notch of the first cover is at least partially provided when the revolver support is disposed at the upper position. Thus, it is preferably completely closed. The first cover and the second cover may in particular overlap.

  Thus, the cooperation of the first cover and the second cover achieves that the intermediate space and the notch are reliably and reliably closed in a simple manner. Thus, pinch protection is achieved and leakage of light, especially laser light, is avoided for all positions of the revolver or revolver support.

  The revolver support preferably has a lower position with no or minimal spacing relative to the surface of the stand base and a maximum spacing with respect to this surface. It can move linearly between the upper position. Therefore, in the upper position, the intermediate space has the largest size, and in the lower position, it has the smallest size. The concept of “lower” and “upper” relates to a defined orientation of the microscope, ie the so-called z-direction.

  The second cover may in this case be formed so that only the notch is closed exclusively by this second cover, in this case facing the revolver support of the revolver support and the stand base The intermediate space between the surfaces is closed by the first cover. In an alternative embodiment, a part of the intermediate space can also be closed by the second cover, so that the first cover can be made correspondingly smaller in this region.

  The first cover and the second cover, in particular, prevent the operator's fingers from being pinched even at the maximum possible intermediate space and / or avoid light leakage from the intermediate space. Close the notch. Therefore, reliable pinch protection and reliable light protection are assured.

  The first cover and the second cover are arranged in particular on the same side of the revolver support. Furthermore, it is preferable that the first cover and the second cover overlap at least partially. As a result, the intermediate space and the notch can be reliably closed. If only the first cover is provided, the intermediate space is certainly closed, but no light protection is achieved at the same time as reliable pinch protection. This is because, in the notched region, it is possible to sandwich the upper edge of the first cover and the objective lens revolver, and light can leak out here. Only the cooperation of both covers provides reliable protection.

  In particular, the first cover is arranged between the revolver support and the second cover. In this case, the interval is selected as small as possible, and in particular, it is impossible to insert a hand into the intermediate gap, so that pinching is avoided.

  For this purpose, the first cover is preferably arranged in front of the revolver support. Similarly, the second cover is also arranged immediately in front of the first cover.

  The shape of the first cover is particularly adapted to the contour of the revolver support, so that the first cover rests on the revolver support and therefore light can escape or the operator can There is no intermediate space that can be inserted. Correspondingly, the second cover has the contour of the first cover and / or the objective lens revolver so that the intermediate space or notch can be closed as little as possible in the overlap region between the covers. Done.

  When the revolver support is disposed at the lower position, a portion located on the side opposite to the optical axis particularly with respect to the rotation axis is disposed inside the cutout of the first cover. In the part located on the opposite side, in particular, the rotation axis is arranged between the optical axis and the part located on the opposite side, so that the part located on the opposite side is optically It is understood that it has the greatest spacing relative to the axis.

  The objective lens revolver is rotatably supported by a revolver support so that the objective lens of the objective lens revolver can be selectively rotated on the optical axis of the microscope.

  In another aspect, the operating portion of the objective lens revolver protrudes beyond the revolver support, the first cover, and the second cover. In this case, this protruding part can be operated for manual rotation of the objective lens revolver. This achieves that the functionality of the objective lens revolver is completely guaranteed even during manual operation, despite the complete closure of the intermediate space. Alternatively or additionally, a motor that enables movement of the objective lens revolver by a motor may be arranged corresponding to the objective lens revolver.

  In a preferred embodiment, the stand base is provided with a third cover for closing the intermediate space. In this case, the first cover and the third cover are arranged on different sides of the revolver support with respect to the revolver support. Therefore, it is achieved that one side is closed by the third cover and the other side is closed by the cooperation of the first cover and the second cover. The third cover is particularly adapted to the contour of the revolver support, so that also on this side, an intermediate space closure with as little gap as possible is achieved. Therefore, the risk of pinching the operator's finger and / or the risk of light leakage is minimized.

  The first cover, the second cover and / or the third cover are each in particular formed as a cover sheet metal, whereby simple production and the best possible shaping and stability are achieved.

  The first cover, the second cover or the third cover is arranged in particular outside the intermediate space, thus leaving the intermediate space empty. That is, these covers are not arranged below the revolver support and are not particularly attached to the lower surface thereof, so that additional optical means can be positioned in the intermediate space. This may be, for example, a beam splitter, a filter, an additional optical system for forming the beam, etc. These are protected against light entering from the outside by a cover.

  Advantageously, the first cover, the second cover and / or the third cover are not deformed when the revolver support moves relative to the stand base. In particular, the first cover, the second cover, and the third cover are formed as rigid bodies and are not elastically deformed during movement of the revolver support.

  The first cover, the second cover and the third cover, the revolver support, the objective lens revolver and the stand base cooperate in particular so that the intermediate space is completely enclosed, so that they are sandwiched on all sides and are protected and inconvenient Reliable laser protection against light leakage is guaranteed.

  Other features and advantages of the present invention will become apparent from the following drawings, which illustrate the present invention in detail with reference to the accompanying drawings.

It is the schematic of the microscope seen from the 1st side in the lower position of a revolver support body. It is the schematic of the microscope shown in FIG. 1 seen from the 1st side in the upper position of a revolver support body. FIG. 3 is a schematic partial view of the microscope shown in FIGS. 1 and 2. FIG. 4 is a schematic view of the microscope shown in FIGS. 1 to 3 as viewed from the second side at a lower position of the revolver support. FIG. 5 is a schematic view of the microscope shown in FIGS. 1 to 4 when viewed from the second side at an upper position of the revolver support. FIG. 6 is a schematic partial view of the microscope shown in FIGS. 1 to 5 as viewed from a second side. It is the schematic which shows the 1st cover of the microscope shown in FIGS. FIG. 7 is a schematic diagram showing a second cover of the microscope shown in FIGS. 1 to 6. FIG. 7 is a schematic diagram showing a third cover of the microscope shown in FIGS. 1 to 6. It is the schematic which shows the revolver support body of the microscope shown in FIGS. It is the schematic which shows the microscope shown in FIGS. 1-6 without a cover seen from the 1st side in the upper position of a revolver support body. It is the schematic which shows the microscope shown in FIGS. 1-6 without a cover seen from the 2nd side in the upper side position of a revolver support body. FIG. 7 is a schematic partial view of the microscope shown in FIGS. 1 to 6 without a second cover, viewed from the first side, in the upper position of the revolver support. FIG. 7 is a schematic partial view of the microscope shown in FIGS. 1 to 6 without a second cover, viewed from the first side, in the lower position of the revolver support.

  FIG. 1 shows a schematic view of the microscope 10 as viewed from the first side. The microscope 10 has a stand base 12, and a microscope table 14 is fixedly attached to the stand base 12. An observation object can be supported on the microscope table 14, in particular in the form of an object support.

  Further, an objective lens revolver 16 is provided. The objective lens revolver 16 has a plurality of notches. One of these notches is exemplarily indicated by reference numeral 22. The objective lens 18 can be accommodated in each of the notches 22. In this case, only one objective lens 18 is shown in FIG. 1 for easy viewing of the drawing. In this case, the objective lens revolver 16 is rotatably attached to the revolver support 20, so that one of the plurality of objective lenses 18 can be selectively rotated to the optical axis of the microscope 10. In this case, the objective lens revolver 16 is attached to the revolver support 20 so as to be inclined such that a rotation axis on which the objective lens revolver 16 can be rotated extends with respect to the optical axis of the microscope 10.

  The rotation of the objective lens revolver 16 is performed manually using the operation part. For this purpose, a jagged portion 26 is preferably provided at the edge of the objective lens revolver 16 so that it is desirable to avoid operator slippage. Furthermore, the objective lens revolver 16 protrudes beyond the revolver support 20 in the direction of the first side of the microscope for better operability. Thereby, the objective lens revolver 16 can be easily rotated by the operator.

  The microscope 10 further includes an eyepiece 30 and a cylindrical portion 32. The operator can observe the object through the eyepiece 30 and the cylindrical portion 32. Further, in order to illuminate the object, a transmissive light source 36 attached to the transmissive illumination arm 34 is provided on the one hand, and an epi-illumination unit 38 is provided on the other hand.

  The revolver support 20 is attached to the stand base 12 so that the revolver support 20 can travel in the direction of the bidirectional arrow P1 relative to the stand base 12 and thus relative to the microscope table 14. ing. In this case, the traveling direction P <b> 1 is directed parallel to the optical axis of the microscope 10. Through a corresponding movement of the revolver support 20 and thus the objective lens revolver 16, it is possible to focus on the object to be observed.

  In order to move the revolver support 20, a movement button 24 is provided on the first side of the microscope 10. Through this movement button 24, the operator can control the traveling of the revolver support 20 in the z direction (that is, upward and downward). In this case, traveling can be carried out selectively purely mechanically or even by a motor.

  In FIG. 1, the lower position of the revolver support 20 is shown. In this lower position, the objective lens revolver 20 has a minimum spacing relative to the surface 40 of the stand base 12 facing the revolver support 20 and is in particular contact with this surface.

  In contrast, FIG. 2 shows a schematic view of the microscope 10 as viewed from the first side, in which the revolver support 20 is shown in the upper position. In this upper position, the revolver support 20 has its maximum spacing relative to the surface 40. As can be seen from FIGS. 11 and 12, the movement of the revolver support 20 creates an intermediate space 60 between the surface 40 of the stand base 12 and the lower surface of the revolver support 20. In order to close the intermediate space 60 from the first side, a first cover 50 and a second cover 52 are provided on the first side, and a third cover is provided on the second side. A cover 58 is provided. In FIGS. 11 and 12, these covers 50, 52, 58 are removed so that the intermediate space 60 is visible. As clearly seen in FIGS. 11 and 12, the intermediate space 60 can be inserted into the intermediate space 60 by the operator of the microscope 10 without the various covers 50, 52, 58. It is large so that the finger can be pinched when moving from the upper position to the lower position. Furthermore, without the covers 50, 52, 58, light, in particular laser light, can escape from the intermediate space 60.

  In order to reliably avoid both of these problems, that is, pinching and light leakage, the first cover 50 and the second cover shown in FIGS. 1 to 3, 7 and 9 are provided on the first side. A cover 52 is provided. FIG. 3 shows a partial view of the microscope 10 as viewed from the first side. In this case, the areas of the first cover 50 and the second cover 52 are enlarged. FIG. 7 is a schematic view of the first cover 50, and FIG. 8 is a schematic view of the second cover 52.

  The first cover 50 is firmly attached to the stand base 12 and is preferably formed as a rigid cover metal sheet. The cover sheet metal is not deformed during the movement of the revolver support 20. Basically, the first cover (and also the second and third covers) can be made from another material that does not transmit light.

  On the other hand, the second cover 52 is attached to a non-rotatable portion of the objective lens revolver 16. Alternatively or additionally, the second cover 52 may be attached to the revolver support 20. Accordingly, the second cover 52 is moved together with the revolver support 20 and the objective lens revolver 16 when moving in the direction of the arrow P1.

  Since the first cover 50 has a notch 54 in the area of the objective lens revolver 16, the objective lens revolver 16 is not obstructed by the first cover 50 even at the lower position of the revolver support 20. The objective lens revolver 16 can always rotate because it can protrude beyond the first cover 50.

  The first cover 50 is used to close the intermediate space 60, whereas the second cover 52 specifically closes the notch 54 of the first cover 50. However, the second cover 52 can at least partially close the intermediate space 60 together. Therefore, by the cooperation of the first cover 50 and the second cover 52, light leakage and pinching on the first side are surely avoided. Once the second cover is removed, the operator holds his / her finger between the objective lens revolver 16 and the first cover 50 in the notch region of the revolver support 20 when the revolver support 20 moves down, And / or at least if the revolver support 20 is located in the upper position, there will be a risk of light leaking in this region. This problem is clearly shown in FIGS. 13 and 14 are partial views of the microscope 10 as viewed from the first side. In this case, the second cover 52 is turned off. FIG. 13 shows the upper position of the revolver support 20, and FIG. 14 shows the lower position of the revolver support 20. Without the second cover 52, the operator puts his finger between the objective lens revolver 16 and the first cover 50 in the area of the notch 54 when the revolver support 20 is moved from the upper position to the lower position. Light can leak out in this area. Only the cooperation of the first cover 50 and the second cover 52 provides complete safety.

  The first cover 50 is particularly adapted to the contour of the revolver support 20 because of its shape, and is disposed immediately in front of the revolver support 20, so that the revolver support 20 and the first cover 50 are separated from each other. There is only a small gap between them, which makes it impossible to pinch at this point. Correspondingly, the second cover 52 is adapted to the shape of the objective lens revolver 16, the revolver support 20 and the first cover 50, and in particular is arranged immediately in front of the first cover 50. However, as little gap as possible is still generated, and pinching is reliably avoided.

  4 and 5 each show a schematic view of the microscope 10 as viewed from the second side. In this case, the second side is located opposite the first side. In FIG. 4, the revolver support 20 is disposed at the lower position, and in FIG. 5, it is disposed at the upper position. FIG. 6 also shows a partial view of the area around the objective lens revolver 16.

  A third cover 58 is provided on the second side. The third cover 58 is also firmly disposed on the stand base 12. This third cover 58 serves to close the intermediate space 60 also from the second side, so that on the one hand pinching protection is achieved and on the other hand light leakage is avoided. FIG. 9 shows a schematic view of the third cover 58.

  The third cover 58 is also formed as a rigid cover metal sheet and is adapted to the contour of the revolver support 20. Furthermore, since the third cover 58 is disposed immediately in front of the revolver support 20, only a minimal gap is generated.

  On the second side, since the objective lens revolver 16 that is inclined and does not protrude from the revolver support 20 in the lower region, the third cover 58 has a notch unlike the first cover 50. You don't have to. Therefore, it is sufficient to provide only one cover 58 on the second side. This is because this single cover 58 provides complete pinch protection.

DESCRIPTION OF SYMBOLS 10 Microscope 12 Stand base | substrate 14 Microscope table 16 Objective lens revolver 18 Objective lens 20 Revolver support body 22 Notch 24 Button 26 Jagged part 30 Eyepiece part 30 Eyepiece lens 32 Tube part 34 Transmission illumination arm 36 Transmission light source 38 Epi-illumination unit 40 Surface 50 1st Cover 52 Second cover 54 Notch 58 Third cover 60 Intermediate space P1 Movement direction

Claims (16)

A stand base (12);
An objective lens revolver (16) rotatable about a rotation axis;
A revolver support (20) for supporting an object support, wherein the revolver support (20) causes the objective lens revolver (16) to move relative to the stand base (12) of the microscope (10). A revolver support (20) supported by the stand base (12) movably along an optical axis,
When the revolver support (20) moves along the optical axis, an intermediate space (60) between the stand base (12), the revolver support (20) and the objective lens revolver (16) The size changes,
The objective lens revolver (16) includes the revolver support (20) such that the optical axis of the microscope (10) and the rotation axis of the objective lens revolver (16) are inclined with respect to each other. In the microscope (10) attached at an angle to
A first cover (50) is attached to the stand base (12), and the first cover (50) is intermediate between the stand base (12) and the revolver support (20). At least partially closing the space (60);
The first cover (50) has a notch (54) in the region of the objective lens revolver (16), and when the revolver support (20) is disposed at a lower position, In the notch (54), a partial region of the objective lens revolver (16) and / or a partial region of the revolver support (20) are arranged,
A second cover (52) is attached to the objective lens revolver (16) and / or the revolver support (20), and the second cover (52) has at least the notch (54). A microscope characterized in that it is partially closed.   The microscope (10) according to claim 1, wherein the second cover (52) closes a part of the intermediate space (60).   The microscope (10) according to claim 1 or 2, wherein the first cover (50) and the second cover (52) are arranged on the same side of the revolver support (20).   The microscope (10) according to claim 3, wherein the first cover (50) is arranged between the revolver support (20) and the second cover (52).   The first cover (50) is disposed immediately in front of the revolver support (20) and / or the second cover (52) is immediately in front of the first cover (50). The microscope (10) according to any one of claims 1 to 4, arranged in   The shape of the first cover (50) is adapted to the contour of the revolver support (20) and / or the shape of the second cover (52) is the first cover (50). 6. Microscope (10) according to any one of the preceding claims, adapted to the contour of the objective lens revolver (16) and / or.   With respect to the rotation axis, a portion of the objective lens revolver (16) located on the side opposite to the optical axis is disposed inside the notch (54) of the first cover (50). The microscope (10) according to any one of claims 1 to 6.   The operating portion of the objective lens revolver (16) operable to manually rotate the objective lens revolver (16) protrudes beyond the second cover (52). The microscope (10) according to any one of 7 to 7.   The operation portion of the objective lens revolver (16) is located inside the notch (54) of the first cover (50) when the revolver support (20) is disposed at the lower position. The microscope (10) according to claim 8, which is arranged.   The stand base (12) is provided with a third cover (58) for closing the intermediate space (60). The first cover (50) and the third cover (58) The microscope (10) according to any one of the preceding claims, wherein the microscope (10) is arranged on different sides with respect to the revolver support (20).   The microscope (10) according to claim 10, wherein the shape of the third cover (58) is adapted to the contour of the revolver support (20). The microscope (10) according to claim 10 or 11 , wherein the first cover (50), the second cover (52) and / or the third cover (58) are each formed as a cover metal sheet. ). Said first cover (50), said second cover (52) and / or the third cover (58) is arranged on the outside of each of the intermediate space (60), from claim 1 0 The microscope (10) according to any one of up to 12. The first cover (50), the second cover (52), and / or the third cover (58) are configured such that the revolver support (20) is relatively disposed with respect to the stand base (12). when moving, not deformed, of any one of claims 1 0 to 13 microscope (10). The first cover (50), the second cover (52), the third cover (58), the revolver support (20), the objective lens revolver (16) and the stand base (12) , said intermediate space (60) surrounds on all sides, of any one of claims 1 0 to 14 microscope (10).   Optical means can additionally be positioned within the enclosed intermediate space (60), the optical means comprising the first cover (50), the second cover (52) and the third cover. The microscope (10) according to claim 15, wherein said microscope (10) is protected against light entering from the outside by a cover (58).

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