JPH1073771A - Microphotographing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize photographing with appropriate exposure by easy operation by providing a light shielding member to intercept an observation system optical path, a detecting means to detect that a photographer approaches an observation system and a controlling means to control to attach/detach the light shielding member to/from the observation system optical path based on the detection output of the detecting means. SOLUTION: A microscope device 1 is constituted of the light shielding member 20 to intercept the observation system optical path B, an approach sensor 30 to detect the photographer approaching the observation system and the controlling part 50 to control to attach/detach the member 20 in/from the observation system optical path B based on the detection output of the sensor 30 in addition to an objective lens 101 and a projection lens 102. By such constitution, when the photographer approaches the observation system, the detecting sensor 30 detects it, and the member 20 is detached from the optical path B so that the sample can be observed. Meanwhile, in the case observation is not performed, the member 20 intercepts the optical path B and only the light from the sample is guided to a photometry system optical path C, whereby accurate photometry is executed without being influenced by the external light made incident from the optical path B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a microscope photographing apparatus.

[0002]

2. Description of the Related Art FIG. 12 is a view for explaining an optical path of a microscope apparatus provided with a conventional microscope photographing apparatus, and FIG.
It is an XIII-XIII line arrow view.

A microscope apparatus 100 includes an objective lens 101
, A projection lens 102, a microscope photographing device 110
And a camera 130.

The camera 130 is a microscope photographing device 110
And a film 131 is built-in.

The microscope photographing apparatus 110 includes a prism 111 that divides light from the sample 103 guided by the objective lens 101 into a photographing system optical path A, an observation system optical path B, and a photometric system optical path C.

[0006] A shutter 112 is disposed between the camera 130 and the prism 111 on the optical path A of the photographing system.
This shutter 112 is used for the primary image plane 1 of the objective lens 101.
The exposure time of the image of the specimen 103 formed on the film 131 at 01a and enlarged and projected by the projection lens 102 is controlled.

On the optical path B of the observation system, a reducing lens 114 for keeping the angle of view of the film 131 within the field of view of the finder eyepiece 113, and a double cross line as an index of the photographing range frame and focusing operation are displayed. A reticle 115 is provided. The finder eyepiece 113 includes a reticle 115
And an image 115a formed on the reticle 115.

A photometric element 123 is arranged on the optical path C of the photometric system, and the photometric element 123 measures the brightness of the image from the sample 103.

The operation of the above-mentioned microscope photographing apparatus will be described.

The prism 111 is at the position indicated by the solid line in FIG. 13 except at the time of exposure. And is guided to the photometric optical path C.

The photographer adjusts the position of the eyepiece 113 with respect to the reticle 115 in the optical axis direction in accordance with the diopter, and focuses on the double cross line of the reticle 115.
For example, the stage 104 on which the sample 103 is mounted is moved in the optical axis direction so that the double cross line of the reticle 115 and the image of the sample 103 can be clearly seen.

In the photomicrographing apparatus 110, the amount of light guided to the photometric optical path C is measured by the photometric element 123, and the exposure time is calculated from the measured value and a preset film sensitivity and exposure correction value. .

At the time of exposure, the prism 111 moves from the solid line position in FIG. 13 to a position indicated by a two-dot chain line as shown by an arrow a, and deviates from the observation system optical path B and the photometry system optical path C.
All the light from 3 is directed to the imaging system optical path A. And
The shutter 112 opens for the exposure time obtained by the calculation, and light is irradiated on the film surface 131.

[0014]

The specimen 103
When the light from the microscope device 100 is weak and the outside of the microscope apparatus 100 is bright, the amount of light entering from the observation system optical path B becomes relatively larger than the amount of light from the sample 103,
In this case, accurate photometry of the sample 103 cannot be performed. Therefore, when a photograph is taken with the exposure time calculated based on the photometric value, the photograph is often underexposed.

Therefore, when accurate exposure is required, a cap (not shown) as a light-shielding member is put on the tip of the finder VF to prevent light from entering the microscope apparatus 100 from entering. Photometry and exposure were performed.

However, since the setting of the photographing range and the operation of focusing are often performed for each frame of the film, it is necessary to attach and remove the cap for each frame, and this operation is troublesome. Was. In order to eliminate the inconvenience of this operation, it is possible to provide a dedicated driving mechanism for inserting and removing the light shielding member in and out of the optical path, but there is a problem that the microscope apparatus 100 becomes expensive.

The light from the sample 103 is
Since the light is distributed to the viewfinder VF and the photometric element 123 at 1, the light quantity guided to the photometric element 123 is smaller than the light quantity guided to the film 131 at the time of exposure. Therefore, in the case of the dark specimen 103, the light quantity guided to the photometric element 123 may not reach the minimum light quantity that satisfies the photometric performance of the photometric element 123, so that highly reliable photometry could not be performed. .

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an inexpensive microscope photographing apparatus which can perform photographing with appropriate exposure by a simple operation. is there.

[0019]

According to a first aspect of the present invention, there is provided a microscope photographing apparatus for dividing light from a specimen into a photographing optical path, an observation optical path, and a photometric optical path. In a microphotographing apparatus provided with a dividing means,
A light-blocking member that blocks the observation system light path, a detection unit that detects that a photographer has approached the observation system, and insertion / removal of the light-blocking member into the observation system light path based on a detection output of the detection unit. Control means for performing the operation.

When the photographer approaches the observation system for observing the sample, the detecting means detects the photographer and the light-shielding member is displaced from the optical path of the observation system so that the sample to be photographed can be observed. Become. When the specimen is not observed, the light-blocking member blocks the optical path of the observation system, and only the light from the specimen is guided to the optical path of the photometric system. Photometry can be performed.

According to a second aspect of the present invention, there is provided the microscopic photographing apparatus according to the first aspect.
The light splitting means is a plurality of prisms or mirrors having different division ratios, and the control means synchronizes switching of the prism or mirror with insertion and removal of the light shielding member into and out of the observation system optical path, and the light shielding member When inserted into the system optical path, a prism or a mirror having a division ratio in which the amount of light to the photometric system optical path is larger than when the light blocking member deviates from the observation system optical path is selected.

When the light-blocking member is inserted into the optical path, the amount of light to the photometric system is increased by the prism or mirror inserted into the optical path, so that light can be measured with a larger amount of light than before.

According to a third aspect of the present invention, in the photomicrographing apparatus according to the first or second aspect, the light shielding member is formed integrally with a supporting member that supports the light splitting means. It is characterized by having been done.

A special drive mechanism for inserting and removing the light shielding member with respect to the observation optical path becomes unnecessary.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a view for explaining an optical path of a microscope apparatus provided with a micrograph photographing apparatus according to one embodiment of the present invention.
FIG. 2 is a view taken along the line II-II of FIG. 1, and the same parts as those of the conventional micrographing apparatus shown in FIG.

The microscope apparatus 1 according to this embodiment includes an objective lens 101, a projection lens 102, a micrograph photographing apparatus 110, and a camera 130, a light-shielding member 20 that blocks an observation system optical path B, and an imaging system that approaches the observation system. A proximity sensor 30 for detecting a person, and a control unit (control means) 50 (see FIG. 3) for inserting and removing the light blocking member 20 into and from the observation system optical path B based on the detection output of the proximity sensor 30.

The proximity sensor 30 detects a photographer who has approached his face to the viewfinder VF.

The light-shielding member 20 is arranged so as to be insertable into and removable from the observation system optical path B, and moves as indicated by an arrow b in FIG.

The prism (light splitting means) 111 is a prism 111b having a division ratio capable of directing a large amount of light to the observation system light path B, and measures the same light amount as the light amount directed to the observation system light path B by the prism 111b. And a prism 111a having a division ratio that can be directed to the system optical path C, and moves as shown by an arrow c in FIG.

The proximity sensor 30 is, for example, a sensor using the principle of an optical proximity sensor or the principle of triangulation.

FIG. 3 is a fragmentary sectional view showing a part of a microphotographing apparatus to which the above embodiment is applied, FIG. 4 is a view taken along the line IV-IV in FIG. 3, and FIG. 6, FIG. 6 is a sectional view taken along the line VI-VI of FIG. 5, FIG. 7 is a broken sectional view showing a part of the micrographing apparatus, and FIG. 8 is VIII-VIII of FIG.
FIG. 9 shows a prism on the optical path and the sensors 15a and 15a.
It is a figure showing relation with output of 5b. 3 and 4 show a photometric state, and FIGS. 5 and 6 show an observation state.
FIG. 7 and FIG. 8 show the exposure state, respectively.

The microscope photographing device 110 includes the prism 1
11a, 111b, a prism supporting member 12, a rack 13, a motor 14, a photometric element 123, gap-type photo sensors (sensors) 15a, 15b, and a reticle 1.
15, a reduction lens 114, an eyepiece 113, a shutter 112, and a proximity sensor (detection unit) 30;
It is housed in a housing 10.

The prism supporting member 12 has a horizontal portion 12H,
It has an L-shape composed of a light shielding member 20 provided vertically to the horizontal portion 12H. At one end of the horizontal portion 12H,
A guide portion 12b is formed to engage with the guide groove 10b formed in the housing 10, and the prism supporting member 12 can be moved in the direction perpendicular to the drawing along the guide groove 10b.

A rack 13 is provided at one end of the horizontal portion 12H.
The rack 13 has a shaft 14a of a motor 14 fixed thereto.
Gears 16 fixed to are engaged with each other, and driving the motor 14 moves the prism support member 12 (the prism prisms 111a and 111b). Note that the motor 14 is attached to a motor support member 17 fixed to the housing 10.

In order to project an image of the specimen at an appropriate magnification,
A photometric lens 122 is provided between the photometric element 123 and the prisms 111a and 111b.

The other end of the horizontal portion 12H has a prism 111a.
And the prism 111b are fixed, and a hole 12a for irradiating all the light from the specimen to the film 131 at the time of exposure is formed.

The prism 111a, the prism 111b and the hole 12a are arranged along a direction orthogonal to the optical axis L and the optical path C of the photometric system.

The prism 111a is formed so as to direct all the light from the sample to the (100%) light measuring system optical path C, and the prism 111b is formed so as to direct all the light from the sample to the (100%) observation system optical path B.

The lower surface of the other end of the horizontal portion 12H is provided with three protrusions 12c to 12e extending in the horizontal direction. When the prism supporting member 12 is moved, the three protrusions 12c
To 12e, two gap-type photosensors 15a and 15b provided in the housing 10 at least one of them.
Across the gap.

In the photosensors 15a and 15b, the light transmitting unit and the light receiving unit are opposed to each other via a gap, and when a light blocking object (projections 12c to 12e) enters the gap, the light transmitting unit and the light receiving unit are changed. Is interrupted and the output current decreases, and this current change causes the protrusions 12c to 12e to change.
Detect the presence of And in any state, 1
One or more protrusions 12 exist in the gap between the sensors 15a and 15b (see FIG. 9).

In FIG. 9, ON indicates that the projection 12 exists in the gap between the sensors 15a and 15b, and OFF indicates that the projection 12 does not exist in the gap between the sensors 15a and 15b.

At the other end of the horizontal portion 12H, a light-blocking member 20 is provided integrally for blocking the optical path B for the observation system and for blocking external light entering from the finder VF for confirming the photographing range and focus. Have been. However, a hole 12f is formed in a portion of the light shielding member 20 corresponding to the prism 111b to secure an optical path toward the observation system optical path B (see FIG. 5). The finder VF includes a reticle 115, a reduction lens 114, and an eyepiece 113.
It is composed of

The operation of the microscope photographing apparatus 110 is controlled by a controller CTR having a control unit 50.

A film 131 is provided on the upper part of the housing 10.
Is fixed, and a straight tube portion 60 of a microscope lens barrel is mounted on a sleeve 10 a formed at a lower portion of the housing 10, and is fixed with a clamp screw 61.

A proximity sensor 30 for detecting a photographer looking through the viewfinder VF is arranged above the viewfinder VF of the housing 10.

FIG. 10 is a block diagram showing a schematic configuration of the control system. FIG. 11 is a flowchart for explaining the operation of inserting and removing the prism. In FIG. 11, S1 to S7 show each step of the operation.

The control unit 50 comprises, for example, a one-chip microcomputer or a one-chip CPU. Photo sensor 15a, 1
5b, information from the proximity sensor 30, the photometric element 123, and the exposure operation switch 51 (provided on the controller CTR) are output to the control unit 50, whereby the control unit 50 controls the operation of the motor 14 and the shutter 112. .

The operation of inserting and removing the light shielding member will be described below with reference to FIGS.

The control unit 50 includes two photo sensors 15
a, 15b based on the outputs of the prisms 111a, 111b.
It is determined whether or not b is on the optical path (S1).

Normally, the prism 111a is placed at a position where the light is directed to the light path C of the photometric system (the position shown in FIGS. 3 and 4). (S2).

In this state, external light entering from the finder VF is blocked by the light shielding member 20, and all light from the sample 103 is used for photometry. The control unit 50 calculates the shutter time based on the photometric value from the photometric element 123, and stores the calculated shutter time in the memory 52.

On the other hand, the proximity sensor 30 constantly monitors the photographer (S3).

When the photographer approaches his / her face to look through the viewfinder VF, the control unit 50 drives the motor 14 and inserts the prism 111b in the optical path instead of the prism 111a as shown in FIGS. 5 and 6. S4), 1 of light from the sample
00% is directed to the observation system optical path B. The control unit 50 simultaneously monitors the outputs of the sensors 15a and 15b, and based on a change in the output current of one of the sensors 15a and 15b, applies a brake to the motor 14 to stop the prism 111b on the optical path.

In this state, since no light enters the photometric element 123, the photometric function is stopped.

Also in this state, the photographer is monitored (S5), and when the photographer moves his / her face away from the viewfinder VF, the control unit 50 inserts the prism 111a into the optical path so that photometry can be performed again. The motor 14 is driven so as to return to a state where light is directed to the photometric optical path C.

At this time, when it is detected that the output current of at least one of the sensors 15a and 15b has decreased, the motor 14 is stopped and the prism 111a is stopped on the optical path.

If there is no approach of the photographer in step 3 (S3), photometry is performed by the photometric element 123 (S3).
6).

The controller 50 calculates the shutter time based on the photometric value (S7) and stores it in the memory 52.

When the exposure operation switch 51 is pressed, the control unit 50 moves the prisms 111a and 111b to the positions shown in FIGS. 7 and 8, and then controls the shutter 112 according to the shutter time stored in the memory 52.
To expose the film 131 surface. Then, the prisms 111a and 111b are returned to the positions shown in FIGS.

When the exposure operation switch 51 is pressed in the state of step 4 (S4), the light is once directed to the light metering optical path C, and the light metering (S6) and the calculation of the shutter time (S7) are performed. Prisms 111a, 111b
Is moved to the position shown in FIG. 7 and FIG.
The shutter 112 is opened in accordance with the shutter time stored in the shutter 131 to expose the film 131.

According to this embodiment, it is possible to relieve the troublesome work of removing the cap for each frame of the film, which has been conventionally performed, and to easily perform photographing with an appropriate exposure.

When the minimum amount of light required to exhibit the performance of the photometric element 123 is the same as that of the related art, the ratio of the amount of light applied to the photometric element 123 to the amount of light applied to the surface of the film 131 during exposure is reduced. Larger than before,
It is possible to cope with photometry of weaker light,
Even in the case of 3, light measurement with high reliability is possible in combination with the light shielding effect of the light shielding member 20.

Further, the prism supporting member 12 is
Since it is used as 0, a dedicated driving mechanism for inserting and removing the light shielding member 20 with respect to the observation system optical path B is unnecessary, and
A microscope photographing device can be provided at low cost.

In the above embodiment, the case where a prism is used has been described. However, the present invention is not limited to the prism, and a mirror may be used.

When the light quantity from the sample is directed to the photometric element at 100%, the light irradiated on the photometric element may be larger than the light quantity at which the performance of the photometric element is guaranteed.
By adding a prism having a low light-splitting ratio to the photometric optical path C and forming a total of three or more prisms, a prism having a low splitting ratio to the photometric optical path C is inserted into the optical path when the amount of light from the sample is too strong. The photometric function can be applied to brighter specimens.

[0067]

As described above, according to the photomicrographing apparatus of the first aspect of the present invention, the troublesome work of removing the cap for each frame of the film, which has been conventionally performed, is eliminated, and the optical path of the observation system is reduced. Since accurate photometry of the sample can be performed without being affected by light from the outside of the microscope that enters from above, it is possible to take a photograph with proper exposure.

According to the second aspect of the present invention, when the minimum amount of light required to exhibit the performance of the photometric element is the same as the conventional one, the amount of light applied to the film surface during exposure is reduced. The ratio of the amount of light applied to the photometric element becomes larger than before, and it is possible to cope with the photometry of weaker light, and even in the case of a dark sample, highly reliable photometry can be performed in combination with the light shielding effect of the light shielding member.

According to the third aspect of the present invention, a dedicated drive mechanism for inserting and removing the light-shielding member from the observation optical path is not required, and the microphotographing device incorporating the light-shielding member is inexpensive. Can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an optical path of a microscope apparatus provided with a micrograph photographing apparatus according to an embodiment of the present invention.

FIG. 2 is a view taken along line II-II of FIG.

FIG. 3 is a cross-sectional view showing a part of a photomicrographing apparatus.

FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 3;

FIG. 5 is a cross-sectional view showing a part of a microphotographing apparatus.

FIG. 6 is a view taken along line VI-VI of FIG. 5;

FIG. 7 is a cross-sectional view showing a part of the photomicrographing apparatus.

FIG. 8 is a view taken along line VIII-VIII in FIG. 7;

FIG. 9 shows a prism on an optical path and sensors 15a, 15
It is a figure showing relation with output of b.

FIG. 10 is a block diagram showing a schematic configuration of a control system.

FIG. 11 is a flowchart illustrating an insertion / removal operation of a light shielding member.

FIG. 12 is a diagram illustrating an optical path of a microscope device provided with a conventional micrograph photographing device.

FIG. 13 is a view taken along line XIII-XIII in FIG. 12;

[Explanation of symbols]

 Reference Signs List 1,10 Microscope photographing device 12 Prism support member 20 Light shielding member 30 Proximity sensor (detection unit) 50 Control unit (control unit) 111,111a, 111b Prism (light division unit) 103 Sample B Observation optical path C Photometric optical path

Claims (3)

[Claims] 1. A microphotographing apparatus provided with a light splitting means for splitting light from a sample into an imaging system optical path, an observation system optical path, and a photometric system optical path, comprising: a light blocking member for blocking the observation system optical path; A microphotograph comprising: a detection unit for detecting that the detection system has approached the observation system; and a control unit for inserting and removing the light shielding member into and from the observation system optical path based on a detection output of the detection unit. Shooting equipment. 2. The light splitting means is a plurality of prisms or mirrors having different splitting ratios, and the control means synchronizes switching of the prism or mirror with insertion / removal of the light shielding member into / from the observation system optical path. When the light blocking member is inserted into the observation system light path, it is possible to select a prism or a mirror having a division ratio in which the amount of light to the light measurement system light path is larger than when the light blocking member is deviated from the observation system light path. The microscope photographing apparatus according to claim 1, wherein: 3. The apparatus according to claim 1, wherein the light blocking member is formed integrally with a support member that supports the light splitting unit.