A multi-color fluorescence illumination device for an upright microscope

Abstract

The utility model belongs to the technical field of fluorescence microscopes, and specifically is a multi-color fluorescence lighting device for an upright microscope, comprising a shell installed on the microscope, an open end of the shell being provided with an end cover, the shell and the end cover enclosing an illumination cavity, a lamp room component and a color filter component being provided in the illumination cavity, the lamp room component comprising a plurality of lamp rooms fixedly installed on the inner wall of the shell, the irradiation directions of the plurality of lamp rooms being different, the color filter component comprising a plurality of color filter blocks fixedly installed on a rotating disk, a bright field tube being further provided on the rotating disk, the plurality of color filter blocks and the bright field tube being equidistantly distributed in a circumferential direction with the center of the rotating disk as the center, an outer gear ring being provided at the edge of the rotating disk, at least a portion of the rotating disk extending out of the illumination cavity, light shielding sheets being provided between adjacent color filter blocks and between the color filter blocks and the bright field tube, the rotating disk in the utility model is easy to adjust, and by rotating the rotating disk, different lamp rooms can be switched to irradiate the corresponding filter blocks, thereby realizing the switching of light paths.

Description

Technical Field

[0001] The utility model relates to the technical field of fluorescence microscopes, in particular to a multi-color fluorescence lighting device for an upright microscope. Background Art

[0002] When light shines on certain substances, these substances will stimulate the emission of light with a longer wavelength than the wavelength of the irradiated light. This phenomenon is called fluorescence, in which the irradiated light is called excitation light, and the excited light is called fluorescence. A fluorescence microscope is a microscope that uses this principle to illuminate the object being observed with light of certain wavelengths as a light source to stimulate fluorescence for observation. The main feature of an upright microscope is the position of its optical device. An upright microscope has the objective lens facing downward, the objective lens is above the microscope stage, and the object being observed is placed above the stage and at the lower end of the objective lens. The lighting device of an existing upright microscope occupies a large space; the irradiation direction of the lamp room of the existing lighting device is the same, and the heat dissipation of the lamp room does not meet the requirements of LED lamps, so the power of the LED lamp cannot be increased, and the optical path switching of the existing lighting device is troublesome and expensive. Utility Model Content

[0003] In order to overcome the above-mentioned defects in the prior art, the utility model provides a multi-color fluorescence illumination device for an upright microscope.

[0004] A multicolor fluorescent lighting device for an upright microscope comprises a shell mounted on the microscope, an open end of the shell being provided with an end cover, the shell and the end cover enclosing an illumination cavity, a lamp chamber assembly and a color filter assembly being provided in the illumination cavity, the lamp chamber assembly comprising a plurality of lamp chambers fixedly mounted on the inner wall of the shell, the illumination directions of the plurality of lamp chambers being all different, the color filter assembly comprising a plurality of color filter blocks fixedly mounted on a turntable, a bright field tube being further provided on the turntable, the plurality of color filter blocks and the bright field tube being equidistantly distributed in the circumferential direction with the center of the turntable as the center, an outer gear ring being provided at the edge of the turntable, at least a portion of the turntable extending out of the illumination cavity, and light shielding sheets being provided between adjacent color filter blocks and between the color filter blocks and the bright field tube.

[0005] Furthermore, the turntable is mounted on a support via a bearing, and the bottom of the support is fixedly mounted on the inner wall of the shell.

[0006] Furthermore, the lamp house assembly comprises a first lamp house, a second lamp house and a third lamp house with different irradiation directions.

[0007] Furthermore, the color filter assembly includes a first color filter block, a second color filter block and a third color filter block, and the first color filter block, the second color filter block and the third color filter block are all equipped with an excitation plate, a dichroic mirror and an emission plate.

[0008] Furthermore, corresponding photoelectric switches are provided on the inner wall of the housing at positions corresponding to the first color filter block, the second color filter block and the third color filter block, and a light shielding sheet is installed on the first color filter block.

[0009] Furthermore, the shell and the end cover are both provided with light outlets.

[0010] Furthermore, an arc portion adapted to the shape of the turntable is provided at the end of the end cover, a through slot penetrating the side wall of the end cover is provided on the arc portion, and the outer gear ring on the turntable extends out of the lighting cavity through the through slot.

[0011] Furthermore, a turntable positioning bracket is provided on the inner wall of the end cover, and positioning grooves are provided on the turntable at corresponding positions of the color filter block and the bright field tube on one side close to the end cover.

[0012] Furthermore, the housing is provided with a brightness knob for adjusting the illumination brightness of the lamp chamber assembly.

[0013] Due to the adoption of the above technical scheme, the beneficial technical effect of the utility model is as follows: in the utility model, the user can, according to the observation needs of the observed object, turn the outer gear ring of the turntable with his fingers to make the color filter block on the turntable correspond to its corresponding lamp chamber; the turntable is easy to adjust; by rotating the turntable, different lamp chambers can be switched to illuminate their corresponding filter blocks, thereby realizing the switching of light paths; light shielding plates are provided between adjacent color filter blocks and between the color filter blocks and the bright field tube to prevent leakage of light diffracted by the lamp chamber; the lamp chamber assembly is fixedly mounted on the inner wall of the shell; when the light path is changed, the lamp chamber assembly does not need to be moved, thereby reducing the space of the lighting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an exploded schematic diagram of a multi-color fluorescence illumination device for an upright microscope of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a multi-color fluorescence illumination device for an upright microscope according to the utility model. Figure 1 ;

[0016] Figure 3 The schematic diagram of the assembly of the lamp chamber component and the color filter component in the utility model is shown in FIG. Figure 1 ;

[0017] Figure 4 The schematic diagram of the assembly of the lamp chamber component and the color filter component in the utility model is shown in FIG. Figure 2 .

[0018] In the figure, 1, end cover, 2, turntable positioning bracket, 3, lighting cavity, 4, turntable, 5, turntable bearing pressure ring, 6, bright field tube, 7, first color filter block, 8, second color filter block, 9, third color filter block, 10, light shielding plate, 11, light blocking plate, 13, light outlet, 14, shell, 15, first photoelectric switch, 16, pillar, 17, second photoelectric switch, 18, third photoelectric switch, 19, brightness knob, 20, input electric switch, 21, LED lamp bead driving board, 22, first lamp chamber, 23, second lamp chamber, 24, third lamp chamber, 25, arc portion, 26, through groove, 27, positioning groove. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the technical solution of the utility model, the utility model is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all belong to the protection scope of the utility model.

[0020] according to Figure 1-4 As shown, a multi-color fluorescent illumination device for an upright microscope comprises a shell 14 mounted on the microscope, an open end of the shell 14 is provided with an end cover 1, the shell 14 and the end cover 1 enclose an illumination cavity 3, a lamp room assembly and a color filter assembly are provided in the illumination cavity 3, the lamp room assembly comprises a plurality of lamp rooms fixedly mounted on the inner wall of the shell 14, the illumination directions of the plurality of lamp rooms are all different, the color filter assembly comprises a plurality of color filter blocks fixedly mounted on a turntable 4, a bright field tube 6 is further provided on the turntable 4, the plurality of the color filter blocks and the bright field tube 6 are equidistantly distributed circumferentially with the center of the turntable 4 as the center, an outer gear ring is provided at the edge of the turntable 4, at least a portion of the turntable 4 extends out of the illumination cavity 3, and light blocking sheets 11 are provided between adjacent color filter blocks and between the color filter blocks and the bright field tube 6.

[0021] In the above specific implementation manner, the user can rotate the turntable 4 according to the observation needs of the observed object, so that the color filter blocks on the turntable 4 correspond to the corresponding lamp chambers. The turntable 4 is easy to adjust. By rotating the turntable 4, different lamp chambers can be switched to illuminate the corresponding filter blocks, thereby realizing the switching of the light path. Light blocking plates 11 are provided between adjacent color filter blocks and between the color filter blocks and the bright field tube 6 to prevent the leakage of light diffracted by the lamp chamber. When the bright field tube 6 is rotated to the observation position, the LED lamp beads installed on the lamp chamber are not lit, and the light source of the microscope can be used for bright field observation. The lamp chamber assembly is fixedly installed on the inner wall of the shell 14. When the light path is changed, the lamp chamber assembly does not need to be moved, thereby reducing the space of the lighting device.

[0022] The turntable 4 is mounted on the support column 16 via a bearing, and the bottom of the support column 16 is fixedly mounted on the inner wall of the housing 14 , so that the turntable 4 can be rotatably mounted on the support column 16 .

[0023] The lamp chamber assembly includes a first lamp chamber 22, a second lamp chamber 23 and a third lamp chamber 24 with different irradiation directions. By placing the first lamp chamber 22, the second lamp chamber 23 and the third lamp chamber 24 at a certain angle, the space occupied by the lamp chamber assembly can be reduced, thereby reducing the volume of the device. At the same time, the irradiation angles of the first lamp chamber 22, the second lamp chamber 23 and the third lamp are different, which is beneficial to the heat dissipation of the lamp chamber assembly.

[0024] The color filter assembly includes a first color filter block 7, a second color filter block 8 and a third color filter block 9, on which excitation plates, dichroic mirrors and emission plates are installed. The number of color filters corresponds to the number of lamp chambers, and corresponding irradiation is performed through rotation. Light enters the color filter blocks, and the light is reflected downward through the excitation plates and dichroic mirrors in the color filter blocks, and then shines toward the sample through the microscope objective. The sample emits fluorescence after irradiation, and passes through the objective lens, the dichroic mirror and the emission plate in the color filter blocks, and enters the eyepiece for observation.

[0025] Corresponding photoelectric switches are provided on the inner wall of the shell 14 at positions corresponding to the first color filter block 7, the second color filter block 8 and the third color filter block 9. A shading sheet 10 is installed on the first color filter block 7. Preferably, there are three photoelectric switches, corresponding to the number of color filters, and installed at the placement positions of the color filters when the color filters correspond to the lamp chamber. By rotating the turntable 4, the shading sheet 10 on the first color filter block 7 can be driven to block the photoelectric switches at each point, thereby lighting up the corresponding lamp chamber and realizing the switching of the light path.

[0026] In a specific application, when the shading sheet 10 blocks the first photoelectric switch 15, the LED lamp beads in the first lamp chamber 22 are lit to illuminate the first color filter block 7; when the shading sheet 10 blocks the second photoelectric switch 17, the LED lamp beads in the second lamp chamber 23 are lit to illuminate the second color filter block 8; when the shading sheet 10 blocks the third photoelectric switch 18, the LED lamp beads in the third lamp chamber 24 are lit to illuminate the third color filter block 9; when the shading sheet 10 rotates to a position where there is no photoelectric switch, the user observes through the bright field tube 6. The device has three fluorescence modes and one bright field mode. Preferably, the lighting of the LED on the lamp chamber assembly can be controlled by the input electrical switch 20 on the shell 14 and the LED lamp bead driving board 21 in the shell 14.

[0027] The housing 14 and the end cover 1 are both provided with a light outlet 13 .

[0028] The end of the end cover 1 is provided with an arc portion 25 adapted to the shape of the turntable 4, and the arc portion 25 is provided with a through groove 26 penetrating the side wall of the end cover 1. The outer gear ring on the turntable 4 extends out of the lighting cavity 3 through the through groove 26, and part of the turntable 4 extends out of the lighting cavity 3, which is beneficial for the user to switch the light path by turning the turntable 4, and the light path conversion is convenient.

[0029] A turntable positioning bracket 2 is provided on the inner wall of the end cover 1, and a positioning groove 27 is provided on the turntable 4 on the side close to the end cover 1 at the corresponding positions of the color filter block and the bright field tube 6. When the color filter block rotates to the specified position, the turntable 4 is positioned by the positioning bracket to prevent the turntable 4 from being accidentally touched and affecting normal observation. Preferably, the positioning bracket is fixedly installed on the end cover 1 by bolts, and a roller is installed on the positioning bracket through a wheel frame. The wheel frame is slidably connected to the positioning bracket, and the wheel frame and the positioning bracket are connected by a spring. The spring gives the roller a force toward the turntable 4, and the turntable 4 is positioned by the cooperation of the roller and the positioning groove 27.

[0030] The housing 14 is provided with a brightness knob 19 for adjusting the illumination brightness of the lamp chamber assembly, so that the user can adjust the light brightness according to needs.

[0031] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A polychromatic fluorescence illumination device for an upright microscope, comprising a housing (14) mounted on the microscope, characterized in that: The open end of the shell (14) is provided with an end cover (1), the shell (14) and the end cover (1) enclose an illumination cavity (3), a lamp chamber assembly and a color filter assembly are provided in the illumination cavity (3), the lamp chamber assembly comprises a plurality of lamp chambers fixedly mounted on the inner wall of the shell (14), the illumination directions of the plurality of lamp chambers are all different, the color filter assembly comprises a plurality of color filter blocks fixedly mounted on a rotating disk (4), the rotating disk (4) is also provided with a bright field tube (6), the plurality of color filter blocks and the bright field tube (6) are equidistantly distributed in the circumferential direction with the center of the rotating disk (4) as the center, an outer gear ring is provided on the edge of the rotating disk (4), at least a portion of the rotating disk (4) extends out of the illumination cavity (3), and light shielding sheets (11) are provided between adjacent color filter blocks and between the color filter blocks and the bright field tube (6).

2. The multicolor fluorescence illumination device for an upright microscope according to claim 1, characterized in that: The turntable (4) is mounted on a support (16) via a bearing, and the bottom of the support (16) is fixedly mounted on the inner wall of the housing (14).

3. The multi-color fluorescence illumination device for an upright microscope according to claim 2, characterized in that: The lamp chamber assembly comprises a first lamp chamber (22), a second lamp chamber (23) and a third lamp chamber (24) having different irradiation directions.

4. The multi-color fluorescence illumination device for an upright microscope according to claim 3, characterized in that: The color filter assembly comprises a first color filter block (7), a second color filter block (8) and a third color filter block (9), and the first color filter block (7), the second color filter block (8) and the third color filter block (9) are all equipped with an excitation plate, a dichroic mirror and an emission plate.

5. The multi-color fluorescence illumination device for an upright microscope according to claim 4, characterized in that: Corresponding photoelectric switches are provided on the inner wall of the housing (14) at positions corresponding to the first color filter block (7), the second color filter block (8) and the third color filter block (9), and a light shielding sheet (10) is installed on the first color filter block (7).

6. The multi-color fluorescence illumination device for an upright microscope according to claim 5, characterized in that: The housing (14) and the end cover (1) are both provided with a light outlet (13).

7. The multi-color fluorescence illumination device for an upright microscope according to claim 1, characterized in that: An arc-shaped portion (25) adapted to the shape of the rotating disk (4) is provided at the end of the end cover (1); a through slot (26) penetrating the side wall of the end cover (1) is provided on the arc-shaped portion (25); and an outer tooth ring on the rotating disk (4) extends out of the lighting cavity (3) through the through slot (26).

8. The multi-color fluorescence illumination device for an upright microscope according to claim 7, characterized in that: A turntable positioning bracket (2) is provided on the inner wall of the end cover (1), and a positioning groove (27) is provided on the turntable (4) at a position corresponding to the color filter block and the bright field tube (6) on a side close to the end cover (1).

9. The multi-color fluorescence illumination device for an upright microscope according to claim 8, characterized in that: The housing (14) is provided with a brightness knob (19) for adjusting the illumination brightness of the lamp chamber assembly.

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