CN205301694U - Illuminators for microscopes - Google Patents

Abstract

The utility model discloses an illumination device for microscope belongs to petroleum geology research field. The illumination device comprises a light source assembly, an optical fiber light pipe and a control device for controlling the illumination intensity of the light source assembly, the illumination device is fixedly connected with the microscope, the light source assembly is connected with the control device, and light beams emitted by the light source assembly are transmitted to a sheet placed on an objective table of the microscope through the optical fiber light pipe. The utility model provides an illumination device for microscope has simple structure, and is with low costs, convenience safe in utilization, and is effectual, realize the microscopic observation of reverberation through simple auxiliary assembly cooperation transmission polarization microscope, make technical staff can observe and appraise the opaque metal mineral in the rock thin slice, satisfy the needs to the understanding of oil gas reservoir on exploration production and the scientific research, the observation appraisal that can also make opaque metal mineral in the deposit rock thin slice can not need professional reflection polarization microscope also to realize, can save the expense of purchasing equipment for the enterprise.

Description

Illuminators for microscopes

technical field

The utility model relates to the field of petroleum geological research, in particular to an illumination device for a microscope.

Background technique

In the fields of petroleum geology research and sedimentology research, thin section observation research is an essential research technology. The use of transmitted light microscopy to observe transparent minerals (such as quartz, feldspar, calcite, dolomite, gypsum, etc.) in various sedimentary rocks is widely used, and transmitted light microscopy is also a routine equipment for researchers. However, a small amount of various opaque metallic minerals (such as heavy minerals in clastic rocks, hydrothermal minerals in carbonate rocks, etc.) are also common in sedimentary rocks. These opaque metallic minerals are completely opaque under a transmitted light microscope Minerals, and metal minerals with poorly developed crystal forms that have not been observed in reflected light in reservoir thin sections are easily misidentified as reservoir bitumen, especially in reservoirs where bitumen is relatively developed.

Microscopic observation and identification of opaque metallic minerals requires the use of reflected light microscopy (also known as metallographic microscopy). Most sedimentary rock researchers in the petroleum industry are not equipped with reflected light microscopes, so it is difficult to observe and identify metallic minerals. Some experienced researchers use a flashlight as a source of reflected light to observe opaque metallic minerals. However, the method of using a flashlight as a reflected light source has the following three disadvantages: first, the light concentration of the flashlight light source is not good, and the light intensity cannot be adjusted; Insufficient intensity; the third is that a hand-held flashlight is required during operation, and the angle of irradiation is constantly adjusted, which makes the operation of the microscope inconvenient.

But there are also some researchers who are equipped with microscopes with two functions of transparent and reflected light, and equipped with special lenses for reflected light. Generally, the size (particle size) of opaque metal minerals in sedimentary rocks is significantly smaller than that of igneous rocks and metamorphic rocks. Sometimes it is necessary to magnify 100 to 200 times for observation and identification. Insufficient incident light intensity to metallic minerals may make the crystal form, cleavage, and metallic luster color reflected by opaque metallic minerals inconspicuous, resulting in difficulties in identification.

Utility model content

In order to solve at least one aspect of the above-mentioned problems and defects in the prior art, the utility model provides an illumination device for a microscope. Described technical scheme is as follows:

One object of the present utility model is to provide an illuminating device for a microscope.

According to one aspect of the present invention, there is provided a lighting device for a microscope, the lighting device includes a light source assembly, an optical fiber light pipe and a control device for controlling the light intensity of the light source assembly, the lighting device It is fixedly connected with the microscope, the light source assembly is connected with the control device, and the light beam emitted by the light source assembly is transmitted to the sheet placed on the stage of the microscope through the optical fiber light guide.

Specifically, the optical fiber light guide includes a metal shaped hose and an end-point luminous plastic lighting optical fiber bundle, and the metal shaped hose is wrapped on the outer surface of the end-point luminous plastic lighting optical fiber bundle.

Further, the illuminating device further includes a casing, and the light source assembly, the optical fiber light pipe and the control device are all accommodated in the inner cavity of the casing.

Further, the light source assembly includes a plurality of light-emitting diodes, the control device is a dimmer switch, and each light-emitting diode in the plurality of light-emitting diodes is connected to the output terminal of the dimmer switch connected, and the dimmer switch is fixed on an inner surface of the housing.

Further, the light source assembly further includes a reflector, and all the light-emitting diodes in the plurality of light-emitting diodes are located at a focal point in the center of the reflector.

Further, an illumination through hole is provided on the housing in front of the reflector, the illumination through hole is fixedly connected to the input end of the optical fiber light guide, and the output end of the optical fiber light guide is arranged on the sheet above.

Further, the housing includes a box body and a box cover fixedly connected to each other, and the light source assembly, the optical fiber light guide and the control device are all fixed in the box body.

Specifically, the metal sizing hose includes metal spring steel wires and galvanized iron wires that are coiled and wrapped with each other.

Further, the lighting device further includes a power supply device connected to the control device.

Further, the power supply device is connected to the input terminal of the control device through a USB power cable.

The beneficial effects of the technical solution provided by the utility model are:

(1) The illumination device for microscope provided by the utility model has the characteristics of simple structure, low cost, safe, convenient and good effect;

(2) The illuminating device used for the microscope provided by the utility model realizes the microscopic observation of reflected light through a simple auxiliary equipment and a transmission polarizing microscope, so that technicians can observe and identify the opaque metal minerals in rock slices, and Satisfied the needs of oil and gas reservoirs in exploration, production and scientific research;

(3) The illumination device for microscope provided by the utility model enables the observation and identification of opaque metal minerals in sedimentary rock slices to be realized without professional reflective polarizing microscope, and can also save the cost of purchasing equipment for enterprises.

Description of drawings

Fig. 1 is a schematic structural view of an illumination device for a microscope according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the illumination device for the microscope shown in FIG. 1 when assembled on the microscope.

Among them, 100 is used for the illumination device of the microscope, 10 light source assembly, 11 LED, 12 reflector, 20 fiber optic light guide, 30 control device, 40 housing, 41 light through hole, 42 cable through hole, 50 USB power cord , 200 microscope, 210 stage, 211 sheet, 220 mirror arm, 230 transmitted light source switch, 240 objective lens, 250 eyepiece, 260 stage height adjustment knob.

detailed description

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 , it shows an illumination device 100 for a microscope according to an embodiment of the present invention. The illuminating device 100 includes a light source assembly 10 , a fiber optic light pipe 20 and a control device 30 for controlling the illumination intensity of the light source assembly 10 . Specifically, the illuminating device 100 is fixedly connected to the microscope 200, the light source assembly 10 is connected to the control device 30, and the light beam emitted by the light source assembly 10 is transmitted to the sheet 211 placed on the stage 210 of the microscope through the optical fiber light guide 20.

In an example of the present invention, the lighting device 100 further includes a power supply device (not shown), and the power supply device is connected to the input end of the control device 30 through a USB power cable 50 . The USB power cord 50 is a cable with a USB interface. This design is because the USB power supply is convenient to use, and it can be used as long as it is connected to a computer that matches the lighting device 100 . For example, the USB power cord 50 can be connected to the USB interface of the computer, so that the computer can be used as a power supply device.

In another example of the present invention, the light source assembly 10 , the optical fiber light pipe 20 and the control device 30 are all housed in the inner cavity of the housing 40 of the illuminating device 100 . The housing 40 includes a box body and a box cover. The box body and the box cover are fixedly connected to each other by, for example, screws, bolts or buckles, and the light source assembly 10 , the optical fiber light guide 20 and the control device 30 are all fixed in the box body. In yet another example of the present utility model, both the box body and the box cover are made of engineering plastics. This example is only an illustrative example, and should not be construed as a limitation to the present invention. Those skilled in the art can use other alternative materials to make the housing 40 as required.

As shown in FIG. 1 , an illumination through hole 41 and a cable through hole 42 are respectively arranged on opposite sides of the box body. side of the device 30. After one end of the USB power cable is connected to the control device 30 (such as a dimmer switch) in the casing 40 , the other end is connected to the power supply device through the cable through hole 42 . The illumination through hole 41 is fixedly connected to the input end of the optical fiber light pipe 20 , and the output end of the optical fiber light pipe 20 extends above the sheet 211 .

In an example of the present invention, each of the plurality of LEDs 11 is connected to the output end of the dimmer switch, and the dimmer switches are all fixed on an inner surface of the box body. The dimmer switch is a dimmer switch dedicated to the light emitting diodes 11 in the light source assembly 10, and has the function of adjusting light intensity. This example is only an illustrative example, and should not be construed as a limitation on the present utility model.

Continuing to refer to FIG. 1 , the light source assembly 10 includes a plurality of light-emitting diodes 11 and a reflector 12 , and all the light-emitting diodes 11 in the plurality of light-emitting diodes 11 are located at the focal point in the center of the reflector 12 . The light-emitting diode (LED) 11 is a dimmable light-emitting diode with a rated voltage of 5V, and the main function of the reflector 12 is to gather light and improve lighting efficiency. The reflector 12 is made of aluminum alloy, and its inner surface is smooth. Through such a design, the reflector 12 can efficiently reflect light from a plurality of LEDs.

Continuing to refer to FIG. 1 , the fiber optic light guide 20 is composed of a metal shaped hose wrapped around an illumination fiber. The metal shaped hose is a composite metal tube made of metal spring steel wire and galvanized iron wire wrapped around each other. Through such a design, the metal shaped hose can be bent into a certain shape arbitrarily in the three-dimensional space and can maintain its shape. Support objects of a certain weight; when supporting objects, the metal shaping hose also has the function of shaping, that is, it will not be deformed by the force of the object. In an example of the present utility model, a helical thread is provided outside the hollow of the metal shaping hose, and a certain size of optical fiber or wires etc. In another example of the present invention, the metal shaped hose can be made using a hose with a length of 25 cm and an inner diameter of 6 mm.

For the lighting fiber, for example, an end-point light-emitting plastic lighting fiber with a length of 25 cm and an outer diameter of 5 mm can be selected as the light-transmitting medium. This is due to the good variability of the plastic lighting optical fiber, so that the light source can flexibly change the angle and distance of the incident light. A plurality of end-point light-emitting plastic lighting optical fibers are formed into a fiber bundle and threaded into a metal shaped hose, so that the metal shaped hose is wrapped on the outer surface of the end-point light-emitting plastic lighting fiber bundle, thereby forming an optical fiber light guide tube 20 . Through such a design, the optical fiber light pipe 20 has the functions of guiding light, flexibly changing the incident light and fixing the angle and distance of the incident light.

During assembly, one end of the USB power cord 50 is connected to the input end of the dimmer switch, and the light-emitting diode is connected to the output end of the dimmer switch; then the dimmer switch and the light-emitting diode are fixed on the box body of the lighting device 100; then Fix the reflector 12 on the box body of the illuminating device 100 so that all the light-emitting diodes 11 are located at the focal point of the center of the reflector 12; ; Finally, install the box cover of the lighting device 100 with screws to complete the connection and assembly of the lighting device 100 .

As shown in FIG. 1 and FIG. 2, the following steps are included when using the lighting device 100:

(1) Cooperate the illuminating device 100 with the transmitted polarizing microscope 200, for example, the back of the illuminating device 100 is fixed on the mirror arm 220 of the transmitting polarizing microscope 200 with a strong double-sided adhesive, and the double-sided adhesive has a bearing force greater than 50N (Newton), Since the total mass of the illuminating device 100 is about 0.2-0.3 kg (kilograms), it can ensure that the illuminating device 100 is stably fixed on the microscope 200;

(2) Put opaque metallic mineral flakes 211 on the stage 210 of the transmission polarizing microscope 200, then turn on the transmission light source switch 230 of the transmission polarizing microscope 200, then observe the flakes 211 at the eyepiece 250, and adjust the height of the stage Adjust the knob 260 until the sheet 211 is clearly imaged, and finally turn off the transmission light source switch 230;

(3) Insert the interface of the USB power cord 50 of the lighting device 100 into the USB socket of the computer, and ensure normal power supply, then turn on the dimmer switch to a smaller position, and light is emitted from the light output end of the optical fiber light guide tube 20;

(4) Adjust the optical fiber light guide 20 so that the light is irradiated on the center of the sheet 211. At this time, the light of the sheet 211 is reflected to the objective lens 240. In this step, in order to obtain better reflected light, the light can be emitted from the optical fiber light guide 20 The incident angle of the incident light is as large as possible, and at the same time, in order to obtain better light intensity, it is also possible to make the light output end of the optical fiber light guide tube 20 as close as possible to the sheet 211;

(5) Observe the thin slice 211 from the eyepiece 250, and adjust the dimmer switch (i.e. the control device 30) to a suitable brightness in the eyepiece 250, then slowly move the thin slice 211 on the stage 210 to observe and identify metallic minerals;

(6) After changing the magnification of the objective lens 240 to observe and identify the metal minerals, the above steps (2) to (5) need to be repeated.

The beneficial effects of the technical solution provided by the utility model are:

(1) The illumination device for microscope provided by the utility model has the characteristics of simple structure, low cost, safe, convenient and good effect;

(2) The illuminating device used for the microscope provided by the utility model realizes the microscopic observation of reflected light through a simple auxiliary equipment and a transmission polarizing microscope, so that technicians can observe and identify the opaque metal minerals in rock slices, and Satisfied the needs of oil and gas reservoirs in exploration, production and scientific research;

(3) The illumination device for microscope provided by the utility model enables the observation and identification of opaque metal minerals in sedimentary rock slices to be realized without professional reflective polarizing microscope, and can also save the cost of purchasing equipment for enterprises.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. one kind is used for microscopical illumination apparatus, it is characterised in that

Described illumination apparatus includes light source assembly, optical fiber light pipe and for controlling the control device of the intensity of illumination of described light source assembly, described illumination apparatus is fixing with described microscope to be connected, described light source assembly is connected with described control device, and the light beam that described light source assembly sends is conducted to the thin slice being placed on described microscopical object stage by described optical fiber light pipe.

2. according to claim 1 for microscopical illumination apparatus, it is characterised in that

Described optical fiber light pipe includes metal sizing flexible pipe and end points light emitting-type plastic illumination fiber bundle, and described metal sizing hose package is rolled on the outer surface of described end points light emitting-type plastic illumination fiber bundle.

3. according to claim 2 for microscopical illumination apparatus, it is characterised in that

Described illumination apparatus also includes housing, and described light source assembly, optical fiber light pipe and control device are contained in the inner chamber of described housing.

4. according to claim 3 for microscopical illumination apparatus, it is characterised in that

Described light source assembly includes multiple Light-Emitting Diode, described control device is dimmer switch, each Light-Emitting Diode in the plurality of Light-Emitting Diode is all connected with the outfan of described dimmer switch, and described dimmer switch is fixed on an inner surface of described housing.

5. according to claim 4 for microscopical illumination apparatus, it is characterised in that

Described light source assembly also includes reflector, and all of Light-Emitting Diode in the plurality of light emitting diode is respectively positioned on the focal point at the center of described reflector.

6. according to claim 5 for microscopical illumination apparatus, it is characterised in that

Being provided with illumination through hole on the housing in the front of described reflector, described illumination through hole is fixing with the input of described optical fiber light pipe to be connected, and the outfan of described optical fiber light pipe is arranged on the top of described thin slice.

7. according to claim 3 for microscopical illumination apparatus, it is characterised in that

Described housing includes the box body and the lid that are fixedly secured to one another, and described light source assembly, optical fiber light pipe and control device are each attached in described box body.

8. according to claim 2 for microscopical illumination apparatus, it is characterised in that

Described metal sizing flexible pipe includes metal spring steel wire and the galvanized iron wire of cladding one another.

9. according to any one of claim 1-8 for microscopical illumination apparatus, it is characterised in that

Described illumination apparatus also includes electric supply installation, and described electric supply installation is connected with described control device.

10. according to claim 9 for microscopical illumination apparatus, it is characterised in that

Described electric supply installation is connected with the input of described control device by USB power source line.