JPH0225121Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is based on the basic size (area, width or maximum diameter), shape and
When enlarging numbers with a microscope and measuring them with the naked eye or with an electronic measuring device, it is possible to accurately know the measurement accuracy of the machine such as the microscope or electronic measuring device and the accuracy of the operator's operation. The present invention provides a marker plate for particle measurement, which can be called a standard model, and which allows the focus and contrast of the image of the machine to be easily adjusted with high precision.

Conventionally, there is no marker plate similar to the particle measurement marker plate of the present invention, and the measurement sample and scale are set on the microscope at the same time, and the focus and contrast of the image reflected on the television screen of the microscope or electronic measuring device is adjusted using an image adjustment device. I adjusted it and then measured it.

However, in this case, it is not possible to know the measurement accuracy of machines such as microscopes and electronic measuring machines, and
It is also impossible to know the accuracy of the operator's operation.

For this reason, it is unclear what the error range of the measurement results is, and there is a fatal drawback that the reliability of the measurement results cannot be confirmed.

Moreover, when adjusting the focus and contrast of an image, the fine particles in the sample often have a similar color to the surroundings, and in this case, it is difficult to see the image of the fine particles, and the operator must carefully adjust the image. Repeatedly, it is difficult to determine whether the image has been accurately adjusted, which is tiring for the operator, time consuming, and inefficient. Moreover,
The error in image adjustment is large, and this appears as a measurement error, resulting in a decrease in measurement accuracy.

Furthermore, there is the serious drawback that if the measurement accuracy is abnormally reduced due to a malfunction on the machine side, or if the operator is unwell and the operational accuracy is abnormally reduced, the measurement result may be incorrect without being aware of it. It was hot.

Therefore, the inventor of the present invention set an object with a predetermined size, shape, and number of model marks imitating the particles in the measurement sample in place of the measurement sample, and created an image of the model mark that appeared on the machine side. By comparing the measured values of the size, shape, and number of the model mark with the known actual size, shape, and number of the model mark, it is possible to know the measurement accuracy of the machine or the operation accuracy of the operator, Moreover, by clearly marking the model mark so that the image stands out more than the sample particles, they devised a method to easily adjust the focus and contrast of the image with high precision.

By providing the above-mentioned "model mark-marked object" used in this method, the present invention makes it possible to accurately determine both the measurement accuracy of the machine and the operation accuracy of the operator. Its main purpose is to enable adjustment of focus and contrast.

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

In FIGS. 1 and 2, reference numeral 1 is a transparent plate made of glass or hard synthetic resin, and 2 is a model mark.

The model mark 2 imitates the basic size and shape of the particles of the sample to be measured with a microscope, and there are many types of shapes.
These model marks 2 are clearly marked and scattered over the entire image area 3 on the upper surface of the transparent plate 1. The upper surface of the transparent plate 1 may be covered with a transparent protective cover 4 as shown in FIG. 4, if necessary.

As shown in Figure 3, model mark 2 has three shapes: round, square, and rod.
Furthermore, each of these three shapes has large, medium, small, and
There are four sizes: micro.

As shown in FIG. 1, these many types of model marks 2 have several congruent shapes for each type, and the congruent shapes are separated from each other. There are two types of rectangular model marks: those that sit horizontally and those that stand diagonally. Stick-shaped objects include those that stand vertically, those that fall horizontally, and those that tilt diagonally.

The marker plate for particle measurement of the present invention is constructed as described above, and is used as follows.

That is, instead of the sample to be measured with the microscope, the marker plate for particle measurement according to the present invention is set on the stage of the microscope. Then, an enlarged image of the model mark 2 covering the entire image area 3 appears on the eyepiece of the microscope or the television receiver of the electronic measuring device attached thereto. (Figure 1 is 72.5 times the actual size.) Next, operate the image focus adjustment device of the microscope or electronic measuring device to clearly adjust the focus and contrast of the image over the entire image area 3. Match. At this time, the model mark 2 is clearly marked and can be easily distinguished from its surroundings, so the image becomes sharply clear when the focus and contrast is adjusted, making it easy to clearly match the contrast. .

After this, by removing the particle measurement marker plate of this invention from the stage of the microscope and placing the measurement sample there, the particles in the measurement sample can be accurately focused and contrasted, and their basic shape・All sizes and numbers are measured with high precision by a worker or an electronic measuring device.

In addition, as a modification of the above embodiment, the size of the model mark 2 may be 2 types, 3 types, or 5 types.
It may be arbitrarily determined to be of any plurality of types or to any size. Further, the shape of the model mark 2 may be made rectangular instead of square, or a model mark of a triangular or other shape may be added, as necessary.

Since the present invention is configured and used as described above, it has the following effects.

(a) Measured values of the size, shape, and number of the image of the model mark displayed on the screen of the microscope or an electronic measuring device attached to it by setting the particle measurement marker plate of the present invention in a microscope. , the known actual size, shape and shape of the model mark.
By comparing the numbers, it is possible to know both the measurement accuracy of the machine and the accuracy of the operator's operation.

That is, if an operator with a certain level of operational accuracy performs the inspection, the measurement accuracy of the machine can be accurately known. Furthermore, by testing with a machine that has a certain level of measurement accuracy, it is possible to determine the level of operator accuracy.

This makes it possible to know the extent of the error range of the measurement results and to accurately know the reliability of the measurement results.

(b) By marking the model mark clearly, it can be more easily distinguished from its surroundings than the fine particles in the measurement sample, making it easier to adjust the focus and contrast of images from a microscope or electronic measuring device with high precision. Can be done.

This allows you to quickly, easily and efficiently adjust the image, and also to perform fine particle measurements with high accuracy with precisely matched focus and contrast.
Measurement accuracy can be improved.

C. If the measurement accuracy is abnormally reduced due to a malfunction on the machine side, or if the operator is unwell and the operational accuracy is abnormally reduced, if the marker plate for particulate measurement of this invention is used, the measurement accuracy will be abnormally reduced. Abnormalities in machines and operators can be easily detected. This eliminates the possibility of overlooking the abnormality and making a mistake in the measurement results.

(2) The model mark is marked over the entire image area of the transparent plate, so you can check at a glance whether the focus or contrast of the image is correct in the center but not in the periphery. The parts can be re-aligned accurately, so
From this point of view, it is possible to more accurately know the measurement accuracy of the machine and the operation accuracy of the operator, and it is also possible to further improve the accuracy of particle measurement.

E Model marks have almost the same basic shapes as round, square, and bar shapes, and each of these shapes also comes in multiple sizes.
Not only the number of particles in the measurement sample, but also
Its basic shape and basic size can be measured with high precision.

Moreover, with one type of marker plate for particle measurement according to the present invention, particles of various measurement samples can be measured with high precision even over a fairly wide range, and is highly versatile.

F. A large number of model marks can be easily and clearly marked with high precision and high speed using, for example, photoengraving, so they can be easily mass-produced and provided at low cost.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a sectional view taken along the line shown in Fig. 1, Fig. 3 is a mark indicating the type of shape and size of the model mark, and Fig. 4 is a plan view.
The figure is a diagram corresponding to FIG. 2 according to another embodiment. 1...Transparent plate, 2...Model mark, 3
...image area.

Claims (1)

[Claims for Utility Model Registration] 1. A large number of model marks of multiple types that imitate the basic size and shape of microparticles of a sample to be measured with a microscope are placed all over the entire imaging area of a transparent plate. The model mark has at least three shapes: round, square, and bar.
A marker plate for microparticle measurement using a microscope, which has multiple types of seed shapes with different sizes, and has a plurality of model marks of each congruent shape dispersed among each other. 2. In the marker plate described in claim 1 of the utility model registration claim, each of the three types of model marks has at least large, medium, and
There are three small sizes. 3. In the marker plate described in paragraph 1 or 2 of the claims for utility model registration, if at least one of the square and rod-shaped model marks has a congruent shape, the orientations of two or more different model marks. What I set.