Microscopic system lighting device

Abstract

The utility model discloses an illuminating device of a microscopic system, which relates to the technical field of microscopic devices and comprises a lamp bead, a gland matched with an objective lens end of a single-tube microscopic system, an outer cover connected below an annular boss of the gland, and a light reflecting part in threaded connection with the lower part of the gland, a light reflecting surface of the light reflecting part is obliquely arranged, and the light reflecting surface of the light reflecting part is in threaded connection with the outer cover. The reflecting surface of the reflecting piece is opposite to the reflecting surface of the outer cover arranged in the outer cover, and the lamp beads are annularly and uniformly distributed on the bottom surface of the annular boss; compared with the prior art, the utility model has the advantages of simple structure, fewer parts, convenience in assembly and low maintenance cost, can be suitable for different working scenes, and can quickly switch bright and dark fields of view.

Description

Technical Field

[0001] The utility model relates to the technical field of microscope devices, in particular to a microscope system lighting device. Background Art

[0002] Microscopes are widely used in scientific research, medical diagnosis and other fields. Different observation objects and working scenes require different lighting methods. Most existing microscope lighting devices can only provide fixed lighting methods and cannot adapt to various observation needs. For a small number of microscope imaging devices that can provide brightfield lighting and darkfield lighting, when switching between brightfield lighting and darkfield lighting, the following methods are usually used:

[0003] 1. Light source switching: Use different light sources to provide bright field and dark field lighting respectively, and switch the lighting mode by controlling the switch of the light source. Although this method can achieve faster switching, it requires multiple light sources and their control circuits, which increases the complexity and cost of the system, and multiple light sources will also increase energy consumption.

[0004] 2. Aperture adjustment: By adjusting the size or shape of the aperture in the illumination system, the propagation path of the light is changed, thereby switching between bright field and dark field. Although this method can adjust the light intensity to a certain extent, the adjustment range is limited, and it is difficult to accurately control the aperture, which may limit the adaptability of the microscope in different application scenarios. Utility Model Content

[0005] The utility model aims to provide a microscope system lighting device, which can solve the problems of complex structure and limited use scenarios of existing microscope system lighting devices.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is: this microscope system lighting device includes lamp beads, and also includes a pressure cover that cooperates with the objective lens end of the monocular microscope system, an outer cover connected under the annular boss of the pressure cover, and a reflector screwed on the lower part of the pressure cover, the reflector is provided with a reflective surface that is inclined, and the reflective surface of the reflector is opposite to the reflective surface of the outer cover provided in the outer cover, and the lamp beads are evenly distributed in a ring shape on the bottom surface of the annular boss.

[0007] In the technical solution of the above-mentioned microscope system lighting device, a more specific technical solution can also be: the pressure cover is a cylinder, the top of the cylinder is provided with the annular boss extending outward, the annular boss is composed of a radial connecting part located on the upper side and an axial connecting part located on the lower side, the outer diameter of the radial connecting part is smaller than the outer diameter of the axial connecting part, radial threaded holes are evenly arranged radially on the circumference of the radial connecting part, and axial threaded holes are axially arranged on the circumference of the axial connecting part; a circle of fixing ring extending downward is processed in the middle of the bottom surface of the axial connecting part; the lower part of the cylinder of the pressure cover is provided with an external thread.

[0008] Furthermore, the outer cover is a cylinder, the upper part of which is a connecting part, the top of which abuts against the bottom surface of the axial connecting part of the pressure cover and one side of which is close to the fixing ring, and threaded holes corresponding to the axial threaded holes are evenly arranged axially on the circumference of the connecting part, and the middle part of the cylinder is provided with the outer cover reflective surface, which is inclined, and the angle between the outer cover reflective surface and the axis of the outer cover is β, and β is 45°.

[0009] Furthermore, the reflector is a cone with a channel in the middle, and the cone is provided with an internal thread that matches the external thread provided on the lower part of the cylinder of the pressure cover. The outer wall of the cone is the reflective surface of the reflector, and the angle between the reflective surface of the reflector and the axis of the reflector is γ, and the γ angle is 53°~62°.

[0010] Furthermore, the main light beam emitted by the lamp bead is reflected by the reflective surface of the reflector to the reflective surface of the outer cover and then reflected out, and the final reflected light forms an angle α° with the optical axis of the monocular microscope system, and the angle α is 15° to 35°.

[0011] Furthermore, the top of the connection between the reflective surface of the outer cover and the connecting part is an inwardly protruding annular step, and the annular circuit board of the lamp bead is installed on the annular step. When the pressure cover and the outer cover are installed and tightened, the bottom end of the fixing ring of the pressure cover abuts against one end of the annular circuit board.

[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0013] 1. Simple structure: The device has few parts, easy assembly and low maintenance cost.

[0014] 2. Suitable for different working scenes: Two reflective surfaces are arranged in the middle and lower parts of the lighting device, namely the reflective surface of the reflector and the reflective surface of the outer cover. The main light of the lamp bead light source is reflected twice, and can illuminate the observed object from the side at an angle, forming an angle with the optical axis of the microscope system, and can produce dark field lighting. The reflector is screwed to the gland, and reflectors with different reflection angles can be replaced as needed. The angle formed by the main light of the lamp bead after reflection and the optical axis of the microscope system will change, forming dark field lighting in different areas to meet the needs of different working scenes.

[0015] 3. The bright and dark fields of view can be quickly switched: Since the reflector is screwed to the gland, when bright field lighting is needed, just rotate and remove the reflector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of embodiment 1 of the utility model.

[0017] Figure 2 It is a schematic diagram of the structure of the outer cover of Example 1 of the present utility model.

[0018] Figure 3 It is a schematic structural diagram of the reflective member of Example 1 of the utility model.

[0019] Figure 4 It is a structural schematic diagram of embodiment 2 of the present utility model.

[0020] Figure 5 It is a structural schematic diagram of the reflective member of Example 2 of the present utility model.

[0021] Serial number description:

[0022] LED lamp 1, objective lens end 2, pressure cover 3, annular boss 3-1, radial connecting part 3-1-1, axial connecting part 3-1-2, fixing ring 3-1-3, outer cover 4, reflecting surface of outer cover 4-1, connecting part 4-2, threaded hole 4-3, annular step 4-4, reflector 5, reflecting surface of reflector 5-1, tightening screw 6, tightening screw 7, annular circuit board 8, reflector 9, reflecting surface of reflector 9-1. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0024] like Figure 1-Figure 3The microscope system lighting device of the present embodiment 1 shown includes a lamp bead, which is an LED lamp 1, a pressure cap 3 matched with the objective end 2 of the monocular microscope system, an outer cover 4 connected under the annular boss 3-1 of the pressure cap 3, and a reflector 5 screwed to the lower part of the pressure cap 3, wherein the reflector is provided with a reflective surface 5-1 which is inclined and is opposite to the outer cover reflective surface 4-1 provided in the outer cover 4, and the LED lamp 1 is evenly distributed on the bottom surface of the annular boss 3-1 in an annular shape; the pressure cap 3 is a cylinder, and the top of the cylinder is provided with an annular boss 3-1 extending outward, The annular boss is composed of a radial connection part 3-1-1 located on the upper side and an axial connection part 3-1-2 located on the lower side. The outer diameter of the radial connection part 3-1-1 is smaller than the outer diameter of the axial connection part 3-1-2. The radial connection part 3-1-1 is evenly provided with radial threaded holes for tightening the stop screws 6 on the circumference of the radial connection part 3-1-1, and the axial connection part 3-1-2 is provided with axial threaded holes for tightening the clamping screws 7 on the circumference of the axial connection part 3-1-2. A circle of fixing ring 3-1-3 extending downward is processed in the middle of the bottom surface of the axial connection part 3-1-2. The lower part of the cylinder of the gland 3 is provided with external threads. Figure 2 The outer cover shown is a cylinder, the upper part of which is a connecting part 4-2, the top of which abuts against the bottom surface of the axial connecting part 3-1-2 of the gland 3 and one side of which is close to the fixing ring 3-1-3, and threaded holes 4-3 corresponding to the axial threaded holes are evenly arranged axially on the circumference of the connecting part 4-2, and the middle part of the cylinder is provided with an outer cover reflecting surface 4-1, which is inclined, and the angle between the outer cover reflecting surface and the axis of the outer cover is β, β is 45°, and the top of the connection between the outer cover reflecting surface and the connecting part is an inwardly protruding annular step 4-4, and an annular circuit board 8 for powering the LED lamp is installed on the annular step, and when the gland 3 and the outer cover 4 are installed and tightened, the bottom end of the fixing ring of the gland abuts against one end of the annular circuit board.

[0025] like Figure 3 The reflector shown in the figure is a cone with a channel in the middle, and the cone is provided with an internal thread that matches the external thread provided at the lower part of the cylinder of the pressure cover 3. The outer wall of the cone is the reflective surface 5-1 of the reflector, and the angle between the reflective surface of the reflector and the axis of the reflector 5 is γ, and the γ angle is 55°.

[0026] The main light beam from the LED lamp is reflected by the reflective surface of the reflector to the reflective surface of the outer cover and then reflected obliquely. The reflected light finally forms an angle α with the optical axis of the monocular microscope system, and the angle α is 15°.

[0027] like Figure 4 and Figure 5In the embodiment 2 shown, the reflector 9 is a cone with a channel in the middle, the outer wall of the cone is the reflective surface 9-1 of the reflector, the angle between the reflective surface of the reflector and the axis of the reflector is γ1, the γ1 angle is 60°, and the other structures are the same as those in embodiment 1.

[0028] When a dark field is needed, loosen the locking screw to make room for assembly, connect the inner hole of the pressure cover of the device with the objective end of the monocular microscope system, tighten the locking screw, turn on the power, and the main light of the LED light source is irradiated onto the reflective surface of the reflector and then reflected onto the reflective surface of the outer cover, and finally obliquely reflected out of the device. After two reflections, the light forms an angle α with the optical axis of the monocular microscope system, and the angle α is 20°, presenting dark field illumination; when the dark field illumination needs to be changed, only different reflectors need to be replaced, the reflector 5 of Example 1 is loosened by rotating clockwise, the reflector 5 is removed from the pressure cover 3, the reflector 9 of Example 2 is replaced, the reflector 9 is tightened by rotating counterclockwise, and fixed on the pressure cover 3, and the power is turned on. After the main light of the light source is reflected twice, it forms an angle α1 with the optical axis of the monocular microscope system, and the angle α1 is 30°, presenting dark field illumination in different areas. When bright field illumination is required, just loosen and remove the reflector by rotating it clockwise. The main light of the light source will be parallel to the optical axis of the monocular microscope system without being blocked or reflected by the object, and the bright field illumination effect can be obtained.

[0029] In other embodiments, the reflective surface of the reflective element can be designed to have different inclinations. After secondary reflection from the reflective surface of the outer cover, it forms different angles with the optical axis of the monocular microscope system, thereby forming dark field illumination in different areas to meet the needs of different work scenarios.

Claims

1. A microscope system lighting device, comprising a lamp bead, characterized in that: It also includes a pressure cover that cooperates with the objective end of the monocular microscope system, an outer cover connected to the annular boss of the pressure cover, and a reflector screwed on the lower part of the pressure cover. The reflector is provided with a reflector with a tilted reflective surface, which is opposite to the reflective surface of the outer cover provided in the outer cover, and the lamp beads are evenly distributed in a ring shape on the bottom surface of the annular boss.

2. The microscope system lighting device according to claim 1, characterized in that: The pressure cover is a cylinder, and the top of the cylinder is provided with the annular boss extending outward, and the annular boss is composed of a radial connecting part on the top and an axial connecting part on the bottom, the outer diameter of the radial connecting part is smaller than the outer diameter of the axial connecting part, radial threaded holes are evenly arranged radially on the circumference of the radial connecting part, and axial threaded holes are axially arranged on the circumference of the axial connecting part; a circle of fixing ring extending downward is processed in the middle of the bottom surface of the axial connecting part; the lower part of the cylinder of the pressure cover is provided with external threads.

3. The microscope system lighting device according to claim 2, characterized in that: The outer cover is a cylinder, the upper part of which is a connecting part, the top of which abuts against the bottom surface of the axial connecting part of the pressure cover and one side of which is close to the fixing ring, and threaded holes corresponding to the axial threaded holes are evenly arranged axially on the circumference of the connecting part, and the middle part of the cylinder is provided with the outer cover reflecting surface, which is inclined, and the angle between the outer cover reflecting surface and the axis of the outer cover is β, and β is 45°.

4. The microscope system lighting device according to claim 3, characterized in that: The reflector is a truncated cone with a channel in the middle, and the truncated cone is provided with an internal thread that matches the external thread provided at the lower part of the cylinder of the pressure cover. The outer wall of the truncated cone is the reflective surface of the reflector, and the angle between the reflective surface of the reflector and the axis of the reflector is γ, and the γ angle is 53°~62°.

5. The microscope system lighting device according to claim 4, characterized in that: The main light beam emitted by the lamp bead is reflected by the reflective surface of the reflector to the reflective surface of the outer cover and then reflected out. The final reflected light forms an angle α with the optical axis of the monocular microscope system, and the angle α is 15° to 35°.

6. The microscope system lighting device according to claim 5, characterized in that: The top end of the connection between the reflective surface of the outer cover and the connecting part is an inwardly protruding annular step, and the annular circuit board of the lamp bead is installed on the annular step. When the pressure cover and the outer cover are installed and tightened, the bottom end of the fixing ring of the pressure cover abuts against one end of the annular circuit board.

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