JPH05241078A - Infrared microscope - Google Patents

Abstract

PURPOSE:To utilize an infrared spectroscope for other measurements by providing a mechanism for fitting other optical systems on main body section and providing an optical path switching mechanism which guides infrared light out to other optical systems in the optical path of a main body optical system. CONSTITUTION:An attachment B is fixed to a microscope main body A by inserting a bolt into the through hole of its flange part. A switching mirror 1 is provided in the optical system optical path of the main body A. The mirror 1 is fitted to a cylinder 6 at 45 deg.. The cylinder 6 is fitted rotatably on the rear surface of the main body A. The projection light from the spectroscope of a light source is made incident from an opening 61 at an end of the cylinder 6 and 90 deg. rotated by the switching mirror 1. When a lock pin 7 is inserted into the bored hole of the main body A and, for example, a pin hole 6a of a collar 62 which are aligned with each other, the light from the spectroscope is directed upward in the main body A. When a pin hole 6b is aligned with the hole of the main body A, the mirror 1 faces sideways and the spectroscope projection light is directed to the attachment B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infrared microscope having an infrared spectroscope as a light source.

[0002]

2. Description of the Related Art The general structure of an infrared microscope is shown in FIG.
Depending on whether the infrared light from the spectroscope (not shown) of the infrared light source 26 is transmission measurement or reflection measurement, the transmission / reflection switching mirror 20
Then, the optical path is switched to the transmission illumination optical system (lower optical system in the figure) or the reflection illumination optical system (upper optical system in the figure), and the light is condensed by the condenser 21 or the objective optical system 22 to irradiate the sample. . The infrared light transmitted or reflected by the sample is collected by the objective optical system 22 and guided to the MCT detector 23. The conventional infrared microscope has the above-described configuration and is integrated with the spectroscope, and other measurements cannot be performed using the spectroscope. However, since the spectroscope itself is an expensive device, the fact that it is dedicated to the infrared microscope means that the user can use the device economically and effectively. There was a desire to use the spectrometer for other measurements.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to make an infrared spectroscope available for other measurements in an infrared spectroscopic microscope.

[0004]

[Means for Solving the Problems] In an infrared microscope, a mechanism for mounting another optical system on the side surface of the main body, and an optical path switching for extracting infrared light into the other optical system mounted on the side surface of the main body in the optical path of the main body optical system. And the mechanism.

[0005]

According to the present invention, another measuring device can be attached to the side surface of the infrared microscope as an attachment, and the infrared light from the infrared spectroscope is transmitted and reflected in the infrared microscope main body. The switching mirror that switches to and is a mechanism that can guide infrared light to an attachment mounted on the side of the main unit, so that infrared light can be switched to transmission / reflection / other optical systems by switching the switching mirror. This made the infrared spectroscope of the infrared spectroscopic microscope available for other measurements.

[0006]

1 is a plan view of an embodiment of the present invention. In FIG. 1, A is an infrared microscope main body, which itself has the structure shown in FIG. 2 similar to the conventional example. Reference numeral B denotes an attachment that is detachably attached to the main body A, and the figure shows a state in which the attachment is attached to the main body. A switching mirror 1 has the same function as the transmission / reflection switching mirror 20 in FIG. Conventionally, in this mirror 1, in FIG. 2, infrared light from the spectroscope (not shown) of the light source 26 is switched up and down to switch the illumination method of the microscope. Infrared light is introduced into the attachment B mounted on the side surface so that the mirror 1 can be switched to distribute the infrared light also in the side direction. In FIG. 1, B is an example of an attachment. In the attachment B, 2 is a mirror that reflects infrared light introduced into the attachment B and guides it to a concave mirror 3. The concave mirror 3 directs infrared light to the sample S. The concave mirror 4 collects the measurement light that has been collected and transmitted through the sample S, and guides it to the detector 5. The detector 5 measures the light transmitted through the sample. The attachment B is an ordinary spectroscopic transmission measuring device for samples,
It is self-evident that another attachment such as a diffuse reflectance measuring device may be attached.

An example of the mirror switching mechanism is shown in FIG. This is an example of the arrangement of the microscope main body A, the spectroscope (not shown) of the light source 26, and the attachment B shown in FIG. 2. The mirror 1 is attached to the cylinder 6 at an angle of 45 °.
Is rotatably attached to the rear surface of the infrared microscope main body A such that the axis of is aligned with the optical axis of the light emitted from the spectroscope of the light source 26 outside the drawing. Light emitted from the spectroscope of the light source 26 is made incident through the mirror 1 of the cylinder 6 and the opening 61 at the end on the reflection side, and is turned by 90 ° by the mirror 1. The outer periphery of the opening 61 is knurled, and a collar 62 is provided in contact with the back surface of the microscope main body A. The collar 62 has three holes 6a for inserting the lock pins 7,
6b and 6c are bored, and one hole into which the lock pin is inserted is bored on the back surface of the microscope body 1. When this hole and the pin hole 6a of the collar 62 are overlapped and the knock pin 7 is inserted, the light from the spectroscope is turned upward in the microscope main body, and the sample is illuminated from above to enter the reflection microscopic measurement mode. When the hole 6c is superposed on the hole of the microscope main body, the spectroscopic output light is turned downward to illuminate the sample from below, and the transmission measurement mode of the microscope is set. When the pin hole 6b is superposed on the hole, the mirror 1 is turned sideways to divert the light emitted from the spectroscope toward the attachment B. The positioning mechanism using the knock pin described above may be another known mechanism, for example, a click mechanism or a motor drive by a stepping motor.

As shown in FIG. 1, the lower surface of the main body of the infrared microscope has a rear portion jutting out to the left and right, and screw legs 8 and 9 are screwed to the respective tip portions of the main body A. Leg 10
Is screwed on to adjust the level of the main body A. The rear two screw legs are extended laterally in order to bear the weight of the attachment when attached and maintain the stability of the entire device. A window for sending light to the attachment B is provided on the side surface of the infrared microscope main body A, and the window is usually covered with a cover plate (not shown). The direction of the optical axis of the attachment optical system with respect to the main body A of the attachment B is regulated by the flange surface of the mounting surface of the main body A and the flatness between the attachment mounting surfaces of the main body A. The attachment B is fixed to the main body A with a bolt through the through hole of the flange portion of the attachment. The cover plate has the same area as the flange of the attachment, has a through hole at the same position as the flange, and is usually bolted to the main body A. However, the attachment mechanism of the attachment B to the main body A is not limited to the mold of this embodiment.

[0009]

According to the present invention, since the ordinary infrared spectroscopic measurement with the infrared microscope and the measurement with another attachment are made possible, the measurement range is further expanded and the spectroscope can be effectively used. .

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is an optical system diagram in the infrared microscope in the above embodiment.

FIG. 3 is a perspective view of a mirror switching mechanism in the above embodiment.

[Explanation of symbols]

 A Infrared microscope body B Attachment S Sample 1 Switching mirror 2 Mirror 3 Concave mirror 4 Concave mirror 5 Detector

Claims (1)

[Claims] 1. A mechanism for mounting another measurement attachment optical system on the side surface of the microscope main body, and another optical system in which infrared light from an infrared spectroscope introduced into the optical path of the main body optical system is mounted on the side surface of the main body. An infrared microscope provided with an optical path switching mechanism for turning the light toward a system.