JP2561305Y2 - Light source device for microscope - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light source device for a microscope that generates desired observation light by various light sources such as a point light source and a surface light source.

[0002]

2. Description of the Related Art Conventionally, high-intensity light sources and light sources for fluorescence observation have been used in microscopes according to the object to be observed and the observation method. As these light sources, a xenon lamp or a mercury lamp generally comprising a discharge tube is used. like this,
Various lamps have features such as being close to a point light source, and the distance from the brightest luminescent spot to the mounting surface is not stable.

In an illumination light source of a microscope, a slight error in the light source position appears as a large illumination unevenness. As a countermeasure, a configuration is generally adopted in which a reflecting mirror is provided behind the lamp. This is to fill the pupil of the objective lens by slightly shifting the direct image of the luminescent spot of the lamp and the image reflected by the reflecting mirror.

Further, measures have been taken to adjust the distance from the bright spot to the mounting surface. This is a microscope illumination device equipped with a lamp centering mechanism that brings a bright spot to the optical axis of the collector lens, and a focus mechanism that adjusts the focal length of the collector lens and the bright spot. is there.

Japanese Utility Model Publication No. 43-26705 discloses a light source device having a lamp centering mechanism and a reflecting mirror adjusting mechanism for preventing illumination unevenness. In such a light source device, adjustment in the vertical direction, the horizontal direction, and the focus direction is performed as mirror adjustment by the reflection mirror adjustment mechanism. Adjustment in the up-down direction, left-right direction, and focus direction is performed as centering adjustment by the centering mechanism of the lamp.

On the other hand, there is a light source device in which lamps are exchanged for each lamp socket so that several types of lamps (a mercury lamp near a point light source, a xenon lamp, a halogen lamp near a surface light source, etc.) can be used in one lamp house. It is considered.

A light source device of this kind is disclosed in Japanese Utility Model Laid-Open Publication No. 62-1797.
No. 14 publication. This light source device has a configuration in which a lamp socket is detachably attached to a lamp house, and a lens for guiding the light source light beam to the microscope body side and a reflection mirror for preventing illumination unevenness are fixed to the lamp house side. .

[0008]

However, the above-mentioned conventional light source device for a microscope has the following problems. That is, when a light source close to a point light source such as a mercury lamp is used, a reflection mirror is required as described above. However, in the case of a surface light source such as a halogen lamp, a reflection mirror is not particularly required. However, in the conventional light source device, since the reflection mirror is fixed to the lamp house, it cannot be removed when the lamp is replaced. However, there is a problem in that the presence of the reflection mirror when the surface light source is used causes a problem such as shortening the life of the lamp.

In the conventional light source device, since the lamp centering mechanism and the mirror adjusting mechanism are independent of each other, the mirror adjustment by the reflecting mirror adjusting mechanism and the centering adjusting by the lamp centering mechanism are performed. However, a total of six adjustment operations are required, and such an operation must be performed each time the lamp is replaced, and thus there is a problem that the operability is complicated.

The present invention has been made in view of the above circumstances, and it is possible to prevent the life of a lamp from being shortened by a reflecting mirror when a surface light source is used, and it is possible to use several types of light sources in one lamp house. An object of the present invention is to provide a light source device for a microscope that is easy to use.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a microscope light source device for generating desired observation light by using various light sources. And a light source unit mounting portion shared by the point light source unit and the surface light source unit is provided. When the point light source unit is mounted on the light source unit mounting portion, the collector lens is mounted on the collector lens mounting portion. A reflector is attached to the collector lens with a point light source interposed therebetween, and when the surface light source unit is attached to the light source unit attachment portion, one of the collector lens or the collector lens for the surface light source is attached to the collector lens. Attached to the collector lens attachment section and Mirror was configured to be excluded from the lamp house.

According to another aspect of the present invention, in order to achieve the above object, when the point light source is mounted on the light source unit mounting portion of the microscope light source device having the above configuration, the collector lens and the reflection mirror are connected. Are provided with a focal length adjusting mechanism and a light source centering mechanism.

[0013]

According to the present invention constructed as described above, various light source units of a point light source and a surface light source are appropriately mounted on the light source unit mounting portion of the lamp house, and a predetermined collector lens is mounted on the collector lens mounting portion of the lamp house. Is attached. When a point light source is used, a point light source unit is attached to the lamp house, a collector lens is attached, and a reflection mirror is arranged on the collector lens with the point light source interposed therebetween. On the other hand, when a surface light source is used, the surface light source unit is mounted on the same lamp house and the collector lens is mounted. At this time, the reflection mirror is excluded from the lamp house. Therefore, both a point light source and a surface light source can be used in one lamp house, and at the time of the surface light source, since the reflection mirror is excluded, there is no adverse effect that the life of the lamp is shortened.

Further, according to the present invention, the above operation is achieved, and at the time of a point light source, the focal length adjusting mechanism in which the collector lens and the reflecting mirror are integrated is attached to the collector lens attaching portion. The distance between the light sources and the distance between the light sources and the reflection mirror can be adjusted by one operation, and the number of operations can be reduced. In addition, when the surface light source is used, by removing the collector lens from the collector lens mounting portion, the reflection mirror integrated with the collector lens is also removed at the same time. Therefore, at the time of the surface light source, the reflection mirror is excluded from the lamp house, thereby preventing a problem that the life of the lamp is shortened.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a system configuration of a light source device for a microscope according to an embodiment of the present invention. The light source device for a microscope includes a lamp house 10, a point light source unit 20 detachably attached to the lamp house 10,
A collector lens unit 30 for a point light source removably attached to the lamp house 10 together with the point light source unit 20.
A surface light source unit 40 detachably attached to the lamp house 10, and a surface light source unit 4
And a collector lens unit 50 for a surface light source, which is detachably mounted together with the collector lens unit 50.

FIGS. 2A and 2B show the appearance of the lamp house 10. FIG. FIG. 1A illustrates a state where the lamp house 10 is viewed from above, and FIG. 2B illustrates a state where the lamp house 10 is viewed from the side. FIGS. 3A and 3B and FIGS. 4A and 4B are cross-sectional views of the lamp house 10.

The lamp house 10 has a box-shaped outer shape.
On one side surface 11a, the various light source units 20, 40 are provided.
An opening 12 is provided as a light source unit attachment portion to which the light source unit is detachably attached. In addition, lamp house 10
An opening for guiding observation light emitted from the light source to the microscope main body side is formed on the other side surface 11b, and a cylindrical fixing part as a collector lens mounting part from outside the lamp house 10 to this opening. 13 is attached concentrically to the opening.

The fixing unit 13 accommodates the lens units 20 and 40 in a cylindrical accommodation space formed therein. A long hole 14 for focus adjustment is formed on the side surface of the fixing portion 13 along the optical axis direction.

Further, the lamp house 10 is provided with an inner frame 15 for shading and heat radiation inside. This inner frame 1
5 has a large number of heat radiation holes 15a. The upper and lower surfaces of the lamp house 10 have a large number of vents 15b.
Are formed. The fixing part 13 is attached to a microscope or a light emitting tube.

The point light source unit 20 includes the lamp house 10.
A fixed plate 21 fitted and fixed to the opening 12 of the light source, a socket 23 for supporting a point light source 22 such as a mercury lamp, and a centering mechanism 24 of the point light source 22 are provided.

In the centering mechanism 24, an adjusting ring 25 having a hollow inside is fixed to one wall surface of the fixed plate 21. A vertical adjustment member 26 is provided inside the adjustment ring 25 so as to be slidable in the vertical direction. The vertical adjustment member 26 is urged upward from a lower end by a spring 27, and the tip of a vertical adjustment knob 28a screwed in from the upper surface of the adjustment ring 25 abuts thereon, thereby restricting upward movement. A socket support shaft 29 is slidably inserted in the center of the vertical adjustment member 26 in the horizontal direction. One end of the socket support shaft 29 penetrates through the other surface of the fixing plate 21, and a support member of the socket portion 23 is fitted and fixed to a distal end thereof. (A portion of the fixing plate 21 through which the socket support shaft 29 penetrates is formed with a long hole or a through hole having a width corresponding to the vertical stroke of the socket support shaft 29). The other end of the socket support shaft 29 is in contact with the tip of a horizontal adjustment knob 28b screwed from the side surface of the adjustment ring 25. The socket support shaft 29 is constantly urged in the direction of the horizontal adjustment knob 28b by a spring (not shown) provided inside.

The point light source unit 20 constructed as described above
The bright spot of the point light source 22 supported by the socket 23 is arranged on the optical axis in the lamp house 10 by fitting the fixing plate 21 into the opening 12 of the lamp house 10.

Collector lens unit 30 for point light source
Is a cylindrical member 31 having an outer diameter slightly smaller than the inner diameter of the cylindrical storage space of the fixing portion 13, and a collector lens 32 is provided in the cylindrical internal space of the cylindrical member 31.
a to 32d are held on the same optical axis. Cylindrical member 3
From one end on the light source side, a reflection mirror holding portion 33 is provided to protrude in a joint shape. This reflection mirror holding unit 3
A mirror holding member 35 to which a reflecting mirror 34 is attached is fitted to the distal end of the mirror 3 such that the mirror reflecting surface is perpendicular to the optical axis.

Incidentally, in the cylindrical member 31, the respective portions where the collector lenses 32a to 32d and the reflection mirror holding portion 33 are fitted are precisely formed by simultaneous processing. or,
In the cylindrical member 31, a portion where the light source 22 is arranged is notched by D-cut. Therefore, the collector lenses 32a to 32d and the reflection mirror 34 are connected to the cylindrical member 31.
The optical axes coincide with each other, and the distance is also an optical design value.

This point light source collector lens unit 3
When 0 is stored in the fixing portion 13 of the lamp house 10,
The distal end portion of the cylindrical member 31 and the reflection mirror holding portion 33 are
It is inserted into the lamp house 10 as shown in FIG.

This point light source collector lens unit 3
0 and the point light source unit 20 as shown in FIG.
When mounted on the lamp house 10, the light source 22 is disposed between the lens 32d closest to the light source and the reflection mirror 34.

A screw hole is formed in the side surface of the cylindrical member 31. The length of the long hole 14 formed on the side surface of the fixing portion 13 is designed to be about twice the optical design value from the collector lens 32d to the light source 22. The light source 22 is disposed between the collector lens 32d and the reflection mirror 34.
When the collector lens unit 30 for a point light source is installed so that is disposed, the screw hole on the side surface of the cylindrical member 31 becomes
The fixing portion 13 is located in the middle of the long hole 14. Then, the adjusting lever 36 is screwed and attached to the screw hole of the cylindrical member 31 exposed from the long hole 14 of the fixing portion 13.

The surface light source unit 40 shares the point light source unit 20, the fixing plate 21, and the centering mechanism 24. That is, the surface light source unit 40 is obtained by exchanging the surface light source 41 such as a halogen lamp and the socket 42 supporting the surface light source 41.

Collector lens unit 50 for surface light source
Is constituted by fitting a collector lens 52 for a surface light source and a bonbon glass 53 for heat absorption in a cylindrical member 51 having the same outer diameter as the cylindrical member 31. Further, similarly to the cylindrical member 31, a screw hole for mounting the adjustment lever 36 from the long hole 14 of the fixed portion 13 is formed in a part of the side surface of the cylindrical member 51 in the storage state in the fixed portion 13. I have. Next, the operation of the present embodiment configured as described above will be described.

A collector lens unit corresponding to the light source to be used is mounted on the lamp house 10. For example, if the light source to be used is a point light source 22, the point light source collector lens unit 30 is attached to the fixing unit 13 of the lamp house 10.
Insert inside. Next, the adjusting lever 36 is screwed into the screw hole of the cylindrical member 31 and attached.

Next, the point light source 22 is attached to the socket 23, and the socket 23 is fixed to the socket support shaft 29 of the point light source unit 20. Then, the fixing plate 21 of the point light source unit 20 to which the point light source is attached is fitted into the opening 12 of the lamp house 10. As a result, the point light source unit 20 is attached to the lamp house 10. Thus, a state as shown in FIGS. 3A and 3B is obtained.

The vertical direction of the point light source 22 (vertical direction in FIG. 3B), the horizontal direction (perpendicular to the plane of FIG. 3B), and the optical axis direction (FIG. 3B). The respective errors in the left and right directions in the figure are adjusted as follows.

First, errors in the vertical and horizontal directions are adjusted by the centering mechanism 24. That is, the cylindrical ring 2
When the up / down adjustment knob 28a screwed to the 5 is rotated, the cylindrical ring 25 side is fixed, so that the up / down adjustment knob 28a is fixed.
a moves up and down. When the upper adjustment knob 28a pressing the vertical adjustment member 26 moves upward, the upper adjustment knob 28a is pushed upward by the spring 27. The socket support shaft 29 penetrating the vertical adjustment member 26 in the left-right direction also moves upward at the same time, and the socket support shaft 2
The socket 23 and the point light source 22 fixed to 9 move upward. When the vertical adjustment knob 28a is moved downward, the vertical adjustment member 26 is lowered downward against the force of the spring 27, and the point light source 22 is also moved downward.

When the left / right adjustment knob 28b is rotated, the left / right adjustment knob 28b moves in the left / right direction because the cylindrical ring 25 is fixed. Left / right adjustment knob 28b
Is moved in the direction of the light source, the tip of the left / right adjustment knob 28b pushes the socket support shaft 29, and the socket 23 and the point light source 22 fixed thereto move in the direction of the light source. Conversely, if the left and right adjustment knob 28b is moved in the direction opposite to the light source, the socket supporting shaft 29 is pushed back by the spring urging the socket supporting shaft 29 in the direction opposite to the light source, and the point light source 22 Moves in the opposite direction of the light source.

As described above, when the centering adjustment of the point light source 22 by the centering mechanism 24 is completed, adjustment (focus adjustment) in the optical axis direction is performed next. Note that the focus adjustment described below may be performed before the centering adjustment.

This is performed by using an adjustment lever 36 screwed from the long hole 14 of the fixing portion 13 to the screw hole on the side surface of the cylindrical member 31. That is, by moving the adjustment lever 36 in the optical axis direction along the elongated hole 14, the point light source collector lens unit 30 moves in the optical axis direction. Collector lenses 32a-3 fixed to cylindrical member 31
The focus adjustment between the collector lenses 32a to 32d and the point light source 22 is performed by moving 2d in the optical axis direction for each unit.

At this time, the collector lenses 32a to 32
Since d and the reflection mirror 34 are integrated, when adjustment between the collector lenses 32a to 32d and the point light source 22 is performed, adjustment between the reflection mirror 34 and the point light source 22 is also performed at the same time. Therefore, adjustment of the distance between the collector lens and the light source and the distance between the reflection mirror and the light source are completed by one operation.

When replacing the point light source with the surface light source, first, the point light source unit 20 is removed from the lamp house 10, and the socket 23 is removed from the socket support shaft 29 of the point light source unit 20.

Next, the adjusting lever 36 is removed from the cylindrical member 31, and the point light source collector lens unit 30 is removed.
From the fixing portion 13. At this time, the reflection mirror 3
Since 4 is integrated with the cylindrical member 31, it is taken out of the lamp house 10 at the same time. Then, the collector lens unit 50 for the surface light source is inserted into the fixing part 13 instead of the collector lens unit 30 for the point light source.

Next, the surface light source 41 is attached to the socket 42, and the socket 42 is fixed to the socket support shaft 29. The fixing plate 21 of the surface light source unit 40 is fitted into the opening 12 of the lamp house 10. As a result, the surface light source unit 40 is attached to the lamp house 10. Thus, the state shown in FIGS. 4A and 4B is obtained. Since the surface light source unit 40 and the collector lens unit 50 for the surface light source do not interfere with each other in the lamp house 10, any one of them may be installed first.

In the case of a surface light source, the centering of the light source can be adjusted in the same manner as in the case of the point light source described above.
Unlike point light sources, surface light sources do not have problems such as uneven illumination.
The centering adjustment need not be performed.

The focus adjustment at the time of the surface light source is also performed by moving the collector lens unit 50 for the surface light source in the optical axis direction using the adjustment lever 36 as in the case of the point light source.

What is important here is that the reflection mirror 34 does not exist in the lamp house 10 when the surface light source is used. In the case of the present embodiment, the same lamp house 10 is shared by the point light source and the surface light source. However, when the collector lens unit is replaced, the reflection mirror is also excluded from the lamp house 10. Therefore, the surface light source 4 is
The life of 1 is not shortened.

As described above, in the present embodiment, the collector lens unit 30 for the point light source in which the collector lenses 32a to 32d for the point light source and the reflecting mirror 34 are integrated, and the collector lens unit 50 for the surface light source are connected to the lamp house. 10
The point light source unit 20 having the centering mechanism 24 and the surface light source unit 40 are detachable from the lamp house 10. As a result, a plurality of types of light sources can be used in one lamp house 10.
Illumination unevenness can be prevented by the reflection mirror 34 disposed inside,
In addition, when the surface light source is used, the reflection mirror
4 is eliminated, and the influence on the life of the surface light source 41 can be eliminated.

Also, a collector lens 32a for a point light source
32d and the reflection mirror 34 are integrated,
The number of operations at the time of focus adjustment can be reduced, and operability can be improved.

In the above-described embodiment, the collector lenses 32a to 32d and the reflection mirror 34 are integrated, but the present invention is not limited to such an integrated configuration. Even if the 32d and the reflection mirror 34 are separate, they may be separately attached to the lamp house 10 at the time of a point light source and excluded from the lamp house 10 at the time of a surface light source.

[0048]

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to prevent the life of the lamp from being shortened by the reflection mirror at the time of the surface light source, and moreover, it is possible to use many kinds of light sources in one lamp house. A good light source device for a microscope can be provided.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of a light source device for a microscope according to an embodiment of the present invention.

FIG. 2 is a plan view and a side view of a lamp house provided in the light source device for a microscope according to one embodiment.

3 is a cross-sectional view taken along a line BB shown in FIG. 2B and a cross-sectional view taken along a line AA shown in FIG. 2A when a point light source is used.

FIG. 4 is a cross-sectional view taken along a line BB shown in FIG. 2B and a cross-sectional view taken along a line AA shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Lamp house, 20 ... Point light source unit, 30 ... Collector lens unit for point light sources, 40 ... Surface light source unit, 50 ... Collector lens unit for surface light sources.

Claims (2)

(57) [Scope of request for utility model registration] 1. A light source device for a microscope for generating desired observation light by various light sources, wherein a collector lens mounting portion shared by a plurality of collector lenses according to the type of light source, a point light source unit and a surface light source are provided in a lamp house. When the point light source unit is mounted on the light source unit mounting portion, a collector lens is mounted on the collector lens mounting portion and a reflection mirror sandwiches a point light source between the collector lens. When the surface light source unit is mounted on the light source unit mounting portion, one of the collector lens or the collector lens for the surface light source is mounted on the collector lens mounting portion and the reflection mirror is excluded from the lamp house. Characterized by being performed Light source device for microscope. 2. When the point light source unit is mounted on the light source unit mounting portion, when the point light source is mounted on the light source unit, a focal length adjusting mechanism in which the collector lens and the reflection mirror are integrated, and a light source centering mechanism are provided. The light source device for a microscope according to claim 1, wherein: