Stereo microscope fluorescence illumination device

Abstract

The utility model provides a kind of stereoscopic microscope fluorescence illumination device of quick replacement fluorescent module, simple structure, control operation is easy, can be adapted to different external light source, it includes shell, pivot, carousel, multiple fluorescent module detachably connected on carousel, fluorescent module has an incident light channel and two emergent light channels;There is a take-out hole on the shell lower wall opposite to the axial direction of carousel, take-out hole is covered by a cover plate detachably connected on shell lower wall;When cover plate is removed, one fluorescent module can be removed and taken out through take-out hole;Carousel has via on the opposite of two emergent light channels of each fluorescent module;Two upper through holes, two lower through holes are respectively opened on shell upper wall, shell lower wall;When carousel can be rotated to the position that the incident light channel on one fluorescent module is coaxial with light source incident channel, two emergent light channels are coaxial with two via on carousel, two upper through holes, two lower through holes.

Description

Technical Field

[0001] This utility model relates to a fluorescence illumination device for a stereomicroscope. Background Technology

[0002] CN213069319U discloses a fluorescent illumination device for a stereo microscope. The device comprises a base plate, a housing, a first turntable, a second turntable, and a mounting base. Each fluorescent module has one light inlet and two light outlets. A mounting cavity is formed between the housing and the base plate. Two observation holes are provided on the top of the housing, and two light-transmitting holes are provided on the base plate. The first turntable is axially connected to the base plate, and the second turntable is fixed to the first turntable. The first turntable has n workstations, and each of the n fluorescent modules is installed at one of the n workstations. Each workstation has a first group of light-transmitting holes, each group consisting of two first light-transmitting holes. The second turntable has n groups of second light-transmitting holes, each group consisting of two second light-transmitting holes. The side wall of the housing has a first opening and a second opening. The first opening faces the mounting base, allowing an LED light to be mounted on the mounting base. The second turntable is exposed at the second opening.

[0003] The main problems are: when replacing the fluorescent module, the cover needs to be removed first, and then the fluorescent module to be replaced needs to be removed, which is complicated and cumbersome; in addition, it is equipped with a reflector to reflect the light emitted by the LED light on the mounting base onto the fluorescent module, which makes the optical path more complicated. Summary of the Invention

[0004] The purpose of this invention is to provide a stereomicroscope fluorescence illumination device that allows for quick replacement of the fluorescence module, has a simple structure, is easy to control and operate, and can be adapted to different external light sources.

[0005] A fluorescence illumination device for a stereo microscope, including:

[0006] An outer shell consisting of an upper shell, a lower shell, and side shells;

[0007] The pivot is located inside the outer casing and is fixed to the upper wall of the casing.

[0008] A turntable is mounted on a pivot and rotates relative to the pivot about the pivot axis.

[0009] The turntable is connected to a drive device, including a motor, mounted on the outer casing, which drives its rotation. The controller is connected to the motor to control the motor's rotation, thereby driving the turntable to rotate.

[0010] There are multiple fluorescent modules distributed on a circumference with the pivot as the axis. Each fluorescent module is detachably connected to the lower end face of the turntable and has one incident light channel and two exit light channels. A dichroic mirror is set at the junction of one incident light channel and one exit light channel.

[0011] A light source incident channel is located on the side wall of the housing opposite to the radial direction of the turntable, for connecting an external light source that can emit light of different wavelengths. An extraction hole is located on the lower wall of the housing opposite to the axial direction of the turntable, and this hole is covered by a cover plate detachably attached to the lower wall of the housing. When the cover plate is removed, a fluorescent module on the turntable, opposite to the extraction hole, can be removed through the extraction hole. The turntable has through holes corresponding to the two light emission channels of each fluorescent module. Two upper through holes and two lower through holes are located on the upper and lower walls of the housing, respectively.

[0012] When the turntable can rotate to a position where the incident light channel on the fluorescent module is coaxial with the incident light channel of the light source, the two outgoing light channels on the fluorescent module are coaxial with the two through holes, two upper through holes, and two lower through holes on the turntable.

[0013] The aforementioned stereomicroscope fluorescence illumination device has a retaining ring fixed around the outer periphery of the light source incident channel on the side wall of the housing. A set screw extending radially along the retaining ring is provided on the retaining ring, and the set screw is used to fix the retaining interface of the external light source that extends into the retaining ring.

[0014] In the aforementioned stereomicroscope fluorescence illumination device, the controller is located on the PCB board inside the housing, and an interface for electrical connection with the PCB board is provided on the housing. The buttons are located on the operation box, which is electrically connected to the PCB board through the interface. The motor rotation is controlled by pressing the buttons through the controller.

[0015] The aforementioned stereomicroscope fluorescence illumination device includes an external light source comprising multiple LEDs capable of emitting light of different wavelengths, and a light source controller that controls the operation of one or more LEDs. The light source controller is electrically connected to the PCB board via a signal transmission line. When a button is pressed, the controller controls the motor to rotate, causing a fluorescence module corresponding to that button to rotate with the turntable to a position opposite to the light source incident channel. The controller then controls one or more LEDs to operate, ensuring that the light emitted by the operating LEDs is of a specific wavelength that can be transmitted by the fluorescence module that has rotated to the position opposite to the light source incident channel.

[0016] The beneficial effects of this utility model are:

[0017] When using the fluorescence illumination device of this stereo microscope, the light emitted by the external light source passes through the light source incident channel and the incident light channel, and is then reflected by the dichroic mirror. It is emitted through an outgoing light channel and a lower through hole to form excitation light. The excitation light irradiates the sample to be observed with a laser, causing the sample to produce fluorescence of a certain wavelength. The fluorescence is emitted through two lower through holes, two outgoing light channels, two through holes, and two upper channels.

[0018] An access hole is provided on the lower wall of the housing, which is covered by a detachable cover plate attached to the lower wall of the housing. When it is necessary to replace the fluorescent module that can transmit light of different wavelengths, the cover plate is removed, and the fluorescent module opposite to the access hole can be removed and replaced through the access hole.

[0019] The light source incident channel allows for connection to various external light sources, offering wide adaptability. In particular, it can be quickly connected to different external light sources via snap rings and set screws.

[0020] To operate and control the rotation of the turntable so that the incident light channel on any fluorescent module can rotate with the turntable to a position coaxial with the incident light channel of the light source, a control box of existing technology is used. By pressing different buttons or combinations of buttons on the control box, the turntable rotates to different positions. For example, each button corresponds to a fluorescent module. When a button is pressed, the turntable rotates, causing the fluorescent module corresponding to the pressed button to rotate to a position coaxial with the incident light channel of the light source.

[0021] Of course, the light emitted by the external light source should be of a specific wavelength that can be transmitted through the fluorescent module opposite the light source's incident channel. To easily change the wavelength of the light emitted by the external light source, the external light source includes multiple LEDs capable of emitting light of different wavelengths. The controller transmits signals to the light source controller via a signal transmission line. The light source controller then controls one or more LEDs to operate, causing the operating LEDs to emit light of a specific wavelength that can be transmitted through the fluorescent module. The external light source, signal transmission line, and light source controller are all existing technologies. Attached Figure Description

[0022] Figure 1 , 2 All of these are general schematic diagrams of the fluorescent illumination device for the stereomicroscope in Example 1.

[0023] Figure 3 This is a schematic diagram of the overall fluorescent illumination device for a stereomicroscope (with the cover plate removed).

[0024] Figure 4 This is a schematic diagram of the overall fluorescence illumination device of a stereo microscope (when the fluorescence module is removed).

[0025] Figure 5 This is a schematic diagram of the overall fluorescent illumination device for a stereomicroscope (excluding the lower wall of the casing, etc.).

[0026] Figure 6 This is a schematic diagram of the overall fluorescent illumination device for a stereomicroscope (with the outer casing removed).

[0027] Figure 7 This is a schematic diagram showing the connection relationship between the card plate and the card interface of the external light source.

[0028] Figure 8 This is a schematic diagram of the fluorescence module.

[0029] Figure 9 This is a three-dimensional sectional view of the fluorescent module.

[0030] Figure 10 This is a diagram showing the connection between the control box and the interface.

[0031] Figure 11 This is a schematic diagram of the fluorescence illumination device for the stereomicroscope in Example 2. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1:

[0034] like Figure 1-3 The stereomicroscope fluorescence illumination device shown consists of an outer shell 1 formed by an upper shell 11, a lower shell 12, and a side shell 13; a pivot 2 is located inside the outer shell and fixed to the upper shell 11; and a turntable 3 is rotatably mounted on the pivot 2 about the pivot axis.

[0035] See Figure 5 , 6 The drive unit 4 includes a motor 41, a toothed belt 42, and a controller. The motor is fixed to the upper wall 11 of the housing, and a drive pulley is fixed to the motor's output shaft. The outer circumference of the turntable has teeth, forming a driven pulley. The toothed belt passes around the drive pulley and the driven pulley. The controller is connected to the motor to control the motor's rotation, which in turn drives the turntable to rotate.

[0036] See Figure 5 , 8 There are 5 fluorescent modules, distributed on a circle with the pivot as the axis. Each fluorescent module is detachably connected to the lower end face of the turntable 3 by screws 51 on both sides. It has one incident light channel 52 and two outgoing light channels 53. A dichroic mirror 54 is set at the intersection of one incident light channel and one outgoing light channel. Filters 55 are set on both the incident light channel 52 and the outgoing light channel 53.

[0037] A light source incident channel 16 is provided on the housing sidewall 13, which is radially opposite to the turntable, for connecting an external light source that can emit light of different wavelengths.

[0038] See Figure 7A retaining ring 61 is fixed to the outer periphery of the light source incident channel on the side wall of the housing. A set screw 62 extending radially along the retaining ring is bolted to the retaining ring. The set screw 61 is used to fix the retaining interface 71 of the external light source that extends into the retaining ring. The retaining interface 71 has an annular groove 72 on its outer periphery. The inner end of the set screw 62 extends into the annular groove 72 to fix the retaining interface 71 to the retaining ring 61.

[0039] See Figure 2-4 A removal hole 14 is provided on the lower wall 12 of the housing, which is axially opposite to the turntable. The removal hole 14 is covered by a cover plate 15 that is detachably connected to the lower wall of the housing by screws. When the cover plate 15 is removed, a fluorescent module can be removed and taken out through the removal hole. The turntable has through holes corresponding to the two emission light channels of each fluorescent module. Two upper through holes 17 and two lower through holes 18 are directly or indirectly provided on the upper wall 11 and the lower wall 12 of the housing, respectively.

[0040] See Figure 10 The controller is located on the PCB board inside the housing. Multiple interfaces that are electrically connected to the PCB board are provided on the housing. Multiple buttons are provided on the operation box 8. The operation box is electrically connected to the PCB board through the control line 81 and one interface. The motor rotation is controlled by pressing the buttons through the controller.

[0041] When the turntable can rotate to a position where the incident light channel on the fluorescence module is coaxial with the incident light channel of the light source, the two exit light channels on the fluorescence module are coaxial with the two vias, two upper through holes, and two lower through holes on the turntable. Light emitted from the external light source passes through the light source incident channel and the incident light channel, and is then reflected by a dichroic mirror, exiting through one exit light channel and one lower through hole to form excitation light. The excitation light irradiates the sample to be observed with a laser, causing the sample to produce fluorescence of a certain wavelength. The fluorescence exits through the two lower through holes, two exit light channels, two vias, and two upper channels.

[0042] Example 2:

[0043] See Figure 11 The stereomicroscope fluorescence illumination device shown has an additional external light source 7 compared to Embodiment 1. The external light source 7 includes multiple LEDs capable of emitting light of different wavelengths, and a light source controller that controls the operation of one or more LEDs. The light source controller is electrically connected to the PCB board via a signal transmission line 82 and an interface. When a button on the control box is pressed, the controller controls the motor to rotate, causing a fluorescence module corresponding to that button to rotate with the turntable to a position opposite to the light source incident channel. The controller then controls the operation of one or more LEDs through the light source controller, ensuring that the light emitted by the operating LEDs is of a specific wavelength that can be transmitted by the fluorescence module rotated to the position opposite to the light source incident channel.

[0044] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. A fluorescence illumination device for a stereo microscope, comprising: An outer shell consisting of an upper shell, a lower shell, and side shells; The pivot is located inside the outer casing and is fixed to the upper wall of the casing. A turntable is mounted on a pivot and rotates relative to the pivot about the pivot axis. The turntable is connected to a drive device, including a motor, mounted on the outer casing, which drives its rotation. The controller is connected to the motor to control the motor's rotation, thereby driving the turntable to rotate. Its characteristics are: There are multiple fluorescent modules distributed on a circumference with the pivot as the axis. Each fluorescent module is detachably connected to the lower end face of the turntable and has one incident light channel and two exit light channels. A dichroic mirror is set at the junction of one incident light channel and one exit light channel. A light source incident channel is located on the side wall of the housing opposite to the radial direction of the turntable, for connecting an external light source that can emit light of different wavelengths. An extraction hole is located on the lower wall of the housing opposite to the axial direction of the turntable, and this hole is covered by a cover plate detachably attached to the lower wall of the housing. When the cover plate is removed, a fluorescent module on the turntable, opposite to the extraction hole, can be removed through the extraction hole. The turntable has through holes corresponding to the two light emission channels of each fluorescent module. Two upper through holes and two lower through holes are located on the upper and lower walls of the housing, respectively. When the turntable can rotate to a position where the incident light channel on the fluorescent module is coaxial with the incident light channel of the light source, the two outgoing light channels on the fluorescent module are coaxial with the two through holes, two upper through holes, and two lower through holes on the turntable.

2. The fluorescence illumination device for a stereo microscope as described in claim 1, characterized in that: A retaining ring is fixed around the light source incident channel on the side wall of the housing. A set screw is provided on the retaining ring, which is used to fix the retaining interface of the external light source that extends into the retaining ring.

3. The fluorescence illumination device for a stereo microscope as described in claim 1, characterized in that: The controller is mounted on a PCB board located inside the housing. An interface for electrical connection to the PCB board is provided on the housing. Buttons are located on the control box, which is electrically connected to the PCB board through the interface. The controller controls the motor rotation by pressing the buttons.

4. The fluorescence illumination device for a stereo microscope as described in claim 1, characterized in that: The external light source includes multiple LEDs capable of emitting light of different wavelengths, and a light source controller that controls whether one or more LEDs are working. The light source controller is electrically connected to the PCB board via a signal transmission line. When a button is pressed, the controller controls the motor to rotate, causing a fluorescent module corresponding to the button to rotate with the turntable to a position opposite to the light source incident channel. The controller then controls one or more LEDs to work, ensuring that the light emitted by the working LEDs is of a specific wavelength that can be transmitted by the fluorescent module that has rotated to the position opposite to the light source incident channel.

Images