JPH06289302A - Photometric diaphragm device - Google Patents

Abstract

PURPOSE:To provide a photometric diaphragm device which can obtain information related to a diaphragm in the midst of using without detaching eyes from the eyepiece of the photometry device of a microscope. CONSTITUTION:A disk-like turret system photometric diaphragm disk 12 is rotatably arranged on a conjugated surface to a sample surface. Besides, the disk 12 is provided with the plural concentrically arranged different diaphragms 14. A display 30 on which the information related to the diaphragms 14 is recorded is provided on the inside of the diaphragms 14 on the lower surface of the disk 12. At the lower part of the disk 12, a lamp 36, a lens 34 and a half mirror 32 are provided. Then, the mirror 32 is set so that it can be inserted under a state inclined to the lower part of the display 30 by 45 deg. as necessary.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photometric diaphragm device used in a microscope photometric device.

[0002]

2. Description of the Related Art Generally, in a microscope photometric device, a method of taking out a part of light within a field of view of a microscope by a photometric diaphragm and measuring the light is used. With this method, it is desirable to be able to confirm the position, size, shape, etc. of the photometric aperture within the field of view. Such a photometric device is disclosed in Japanese Utility Model Laid-Open No. 62-16912 and Japanese Patent Laid-Open No.
-136112 and the like. The photometric apertures used in these devices are generally of the turret type in which apertures of different sizes are arranged on the same circumference on a disk, the type of slider type in which apertures of different sizes are attached and detached by sliders, and the size A rectangular diaphragm that can be changed is used. An illuminating unit is provided behind these photometric diaphragms to project the image of the diaphragm into the visual field.

[0003]

In the above-mentioned apparatus, the position of the photometric diaphragm, the size and shape of the sample, etc. can be confirmed, but which slider of the photometric diaphragm in the visual field is the turret. Whether or not is inserted is confirmed by visually observing the display on the side surface of the turret disc or the slider from the outside of the device. Generally, when measuring a sample using a microscope photometric device, the size of the photometric aperture is changed according to the size of the cell or tissue to be measured, but with the above-mentioned device, the aperture currently inserted in the optical path. In order to check the diameter, number, etc., it is necessary to take the eye away from the eyepiece each time and check the display part.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a photometric diaphragm device which can confirm information about the diaphragm in the field of view without taking the eye away from the eyepiece.

[0005]

SUMMARY OF THE INVENTION A photometric aperture device of the present invention comprises an aperture member provided with an aperture arranged on a surface conjugate with a sample surface, and a display provided on the surface of the aperture member for recording information of the aperture. And display means for illuminating the display.

[0006]

In the photometric diaphragm device of the present invention, the display in which the information of the diaphragm is recorded is arranged on the plane conjugate with the sample surface, like the diaphragm. This display is illuminated by illumination means. Illumination light is reflected or scattered by the display. The reflected or scattered light is optically coupled to the optical system of the microscope photometric device.
As a result, the image of the sample, the image of the diaphragm, and the image of the display are superimposed and formed in the same position in the same visual field.

[0007]

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

FIG. 1 shows a binocular device having a photometric aperture projection optical system incorporating the photometric aperture device of the first embodiment. The disk-shaped turret type photometric diaphragm 12 is rotatably arranged on a surface conjugate with the sample surface. The photometric diaphragm 12 has a plurality of different diaphragms 14 arranged concentrically, one of which is arranged on the optical axis connecting the sample and the photoelectric element. On the lower surface of the photometric diaphragm 12, a display 30 is provided inside each diaphragm 14 in which information regarding the diaphragm 14 is recorded. The display 30 is formed by depositing or painting a material that reflects or scatters light. An illumination lamp 20, a collimator lens 18, and a mirror 16 are provided above the photometric diaphragm 12. The mirror 16 can be inserted in a state of being tilted by 45 ° with respect to the optical axis connecting the sample and the photoelectric element, if necessary. A lamp 36, a lens 34, and a half mirror 32 are provided below the photometric diaphragm 12. The half mirror 32 can be inserted below the display 30 in a state of being tilted at 45 °, if necessary. The lamp 36, the lens 34, and the half mirror 32 together with the photometric diaphragm 12 constitute the photometric diaphragm device of this embodiment. Below that, the prism 22
And 24 are arranged, and an imaging lens 26 and a concave mirror 28 are provided obliquely above the prism 24.

The light from the sample enters the prism 22 from below, is reflected by the interface between the prism 22 and the prism 24, is further reflected by the lower surface of the prism 22, and is guided to the eyepiece.

The light emitted from the illumination lamp 20 is collimated by the collimator lens 18 and reflected by the mirror 16 to illuminate the diaphragm 14. The light that has passed through the diaphragm 14 is reflected by the interface between the prism 22 and the prism 24, and is imaged on the surface of the concave mirror 28 by the lens 26. The reflected light passes through the lens 26, enters the prism 24, passes through the interface between the prism 24 and the prism 22, is reflected by the lower surface of the prism 22, and is guided to the eyepiece lens.

The light emitted from the illumination lamp 36 is
It is collimated by the lens 34, reflected by the half mirror 32, and reflected or scattered by the display 30. The reflected light or scattered light passes through the half mirror 32 and is reflected at the interface between the prism 24 and the prism 22, and the lens 26
Thus, an image is formed on the surface of the concave mirror 28. The reflected light passes through the lens 26 and the prism 24 and the prism 22.
Of the prism 22, is reflected by the lower surface of the prism 22, and is guided to the eyepiece.

Since both the diaphragm 14 and the display 30 are located on a plane conjugate with the sample surface, these three images are superposed and observed in the same visual field when looking through the eyepiece. . Therefore, the user does not take his eyes off the eyepiece,
It is possible to confirm the diaphragm 14 that is currently in the optical path. The image of the display 30 can be selectively removed from the image in the visual field by removing the half mirror 32 from the optical path and the image of the diaphragm 14 by removing the mirror 16 from the optical path.

Next, the photometric diaphragm device of the second embodiment will be described with reference to FIG. In this embodiment, the display 30 is made of a material that scatters light, and the lamp 36 and the lens 34 are arranged so as to illuminate the display 30 from obliquely below. The light emitted from the lamp 36 passes through the lens 34 and is applied to the display 30, and the applied light is scattered downward by the display 30. If this embodiment is incorporated into the optical system of FIG. 1 instead of the first embodiment, the image of the display 30 is projected on the image of the sample in the same manner as described with reference to FIG.
In this case, the lamp 36 is used to select the projection / non-projection of the display 30.
This is done by turning on and off. Compared to the above-mentioned embodiment, this embodiment has no half mirror and has a simpler configuration.

The present invention is not limited to the above-described embodiments, and various modifications and alterations can be made without departing from the gist of the invention. For example, although the turret type is given as an example, it can be applied to a slider type and a variable rectangular diaphragm. Further, although the one incorporated in the projection optical system has been described as an example, it may be incorporated in another optical system.

[0015]

According to the present invention, the image of the sample, the diaphragm and the display are superimposed and formed in the same field of view of the microscope photometric device, so that the user can record them on the display without taking his eyes off the eyepiece. You will be able to get information.

[Brief description of drawings]

FIG. 1 shows a binocular device having a photometric aperture projection optical system incorporating the photometric aperture device of the first embodiment of the present invention.

FIG. 2 shows a photometric aperture device according to a second embodiment of the present invention.

[Explanation of symbols]

12 ... Photometric diaphragm, 14 ... Aperture, 30 ... Display, 32 ... Half mirror, 34 ... Lens, 36 ... Lamp.

Claims (1)

[Claims] 1. A photometric aperture device used in a microscope photometric device, comprising an aperture member provided with an aperture arranged on a surface conjugate with a sample surface, and a display provided with information on the aperture on the surface of the aperture member. A photometric aperture device having means for illuminating a display.