Electric filter device based on slit-lamp microscope imaging light path

Abstract

An electric filter device based on a slit-lamp microscope imaging light path comprises a filter base, a filter rotating disc and a driving assembly. The filter base is provided with a cavity for accommodating the filter turntable, and the filter turntable is rotationally connected into the cavity; the driving assembly is connected to the filter base and used for driving the filter rotating disc to rotate, and the filter rotating disc is provided with at least one set of filter installing holes used for installing filters. And the motor drives the filter turntable to synchronously rotate through the transmission mechanism, so that the required filters are accurately switched. And at least two groups of filter disc mounting holes are uniformly distributed on the filter turntable, so that the device can adapt to various application scenes, corresponding filters are additionally mounted for observation according to special requirements, and the detection efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to an electric filter device based on a slit lamp microscope imaging light path. Background Art

[0002] The slit lamp microscope is an important and indispensable pathological diagnostic instrument for ophthalmic medical examinations. It is often used in conjunction with the sodium fluorescein staining method to examine hidden foreign bodies on the ocular surface, conjunctiva, cornea, etc. During the slit lamp sodium fluorescein staining examination, the staining is observed through the slit lamp lighting cobalt blue lens, the manual yellow light filter device installed between the slit lamp objective lens group and the eyepiece group. The unstained part shows a lighter blue light, which will not affect the observation of sodium fluorescein staining. The stained part shows a more eye-catching yellow-green color, making it easier to check for subtle lesions of the cornea and conjunctiva. The existing manual filter device has the following problems: 1. The filter needs to be switched manually, the operation range is large, and it is not convenient to switch the filter; 2. Only one set of filters can be installed, and other special filter installation interfaces are missing, so multiple filter observation modes cannot be performed. Utility Model Content

[0003] The utility model aims to provide an electric filter device with intelligent, simplified and convenient operation functions in view of the shortcomings of the prior art.

[0004] Therefore, an electric filter device based on the imaging optical path of a slit lamp microscope is proposed, and the specific technical solution is as follows:

[0005] An electric filter device based on the imaging optical path of a slit lamp microscope, characterized in that:

[0006] Includes filter holder, filter turntable and drive assembly;

[0007] The filter seat has a chamber for accommodating the filter turntable, and the filter turntable is rotatably connected in the chamber;

[0008] The driving assembly is connected to the filter seat, and the driving assembly is used to drive the filter turntable to rotate. The filter turntable is provided with at least one group of filter mounting holes for mounting filters.

[0009] In order to better realize the utility model, it can be further:

[0010] The locking screw is passed through the central axis of the chamber, the inner ring of the bearing is fixedly sleeved on the locking screw, and the inner hole of the filter turntable is fixedly sleeved on the outer ring of the bearing so that the filter turntable rotates relative to the locking screw.

[0011] Further:

[0012] The filter turntable is provided with at least two groups of filter mounting holes, and each group of filter mounting holes includes two filter mounting holes.

[0013] Further:

[0014] The outer end of the filter seat is provided with a snap-on interface.

[0015] Further:

[0016] The driving assembly includes a motor frame, a motor, a driving pulley, a synchronous belt and a synchronous driven pulley;

[0017] The filter seat has a motor mounting surface, and a through hole communicating with the interior of the chamber is formed on the motor mounting surface;

[0018] The motor frame is fixedly connected to the motor mounting surface; the motor is fixedly connected to the motor frame;

[0019] The rotating shaft of the motor is fixedly sleeved with a driving pulley, and a synchronous driven pulley is fixedly connected to the central axis of the filter turntable facing the bottom of the chamber, the synchronous belt is tensioned on the driving pulley and the synchronous driven pulley, and the synchronous belt is located in the through hole;

[0020] The driving pulley drives the synchronous driven pulley to rotate through a synchronous belt, and the synchronous driven pulley drives the filter turntable to rotate synchronously.

[0021] Further:

[0022] The motor drives the filter turntable to rotate through a gear transmission mechanism.

[0023] Further:

[0024] A Hall sensor is arranged in the cavity of the filter seat, and a magnet is arranged on the filter turntable. The rotation position of the filter turntable is detected by the magnetic induction of the Hall sensor.

[0025] Further:

[0026] A photoelectric sensor for detecting the position of the filter turntable is arranged in the cavity of the filter seat.

[0027] The beneficial effects of the utility model are:

[0028] The operation is simple, avoiding the trouble of manually switching filters. You only need to operate the switch button. The switch button controls the rotation of the motor through the electronic control system. The motor drives the filter turntable to rotate synchronously through the transmission mechanism, so as to achieve accurate switching of the required filter.

[0029] There are at least 2 groups of filter installation holes evenly distributed on the filter turntable, which can adapt to a variety of application scenarios. According to special needs, corresponding filters can be installed for observation, which is conducive to improving detection efficiency. At the same time, an installation interface is reserved for future detection filters, which facilitates the intelligent operation and remote operation of the entire slit lamp microscope inspection instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a cross-sectional structural diagram of the utility model;

[0031] Figure 2 It is an explosion diagram of the utility model;

[0032] Figure 3 This is the logic block diagram of this patent;

[0033] The accompanying drawings in the figure are marked as filter seat 1, filter turntable 2, bearing 3, locking screw 4, synchronous belt 5, motor frame 6, driving pulley 7, motor 8, chamber 9, filter mounting hole 10, synchronous driven pulley 11, buckle structure 12, imaging light path hole 13, Hall sensor mounting hole 101, and magnetic steel mounting hole 102. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present utility model, it should be noted that the terms "vertical", "upper", "lower", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present utility model. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] like Figure 1 and Figure 3 As shown:

[0037] An electric filter device based on the imaging optical path of a slit lamp microscope comprises a filter holder 1, a filter turntable 2 and a drive assembly. The filter holder 1 has a chamber 9 for accommodating the filter turntable 2, the filter turntable 2 is rotatably connected in the chamber 9, and the outer end of the filter holder 1 is provided with a snap-fit ​​interface 12 for connecting with an existing slit lamp objective lens group.

[0038] The driving assembly is connected to the filter seat 1, and the driving assembly is used to drive the filter turntable 2 to rotate. Three groups of filter mounting holes are arranged on the filter turntable 2, two groups of filter mounting holes are used to install the filters required for inspection, and the other group of filter mounting holes is used as a vacant position without installing filters. The filter mounting holes 10 are arranged along the circumferential direction of the filter turntable 2, and each group of filter mounting holes includes two filter mounting holes 10.

[0039] The filter holder 1 is provided with a Hall sensor mounting hole 101, and the filter wheel 2 is provided with a plurality of magnetic steel mounting holes 102, and the rotation position is detected by magnetic induction. Alternatively, a photoelectric sensor can be used as a similar substitute for the Hall sensor, and the photoelectric sensor is arranged in the cavity of the filter holder to detect the position of the filter wheel.

[0040] Specifically, the locking screw 4 is penetrated through the bottom of the chamber 9 , the inner ring of the bearing 3 is fixedly sleeved on the locking screw 4 , and the inner hole of the filter wheel 2 is fixedly sleeved on the outer ring of the bearing 3 so that the filter wheel 2 can rotate relative to the locking screw 4 .

[0041] The drive assembly includes a motor frame 6, a motor 8, a driving pulley 7, a synchronous belt 5 and a synchronous driven pulley 11. The filter holder 1 has a motor mounting surface, a through hole communicating with the interior of the chamber 9 is provided on the motor mounting surface, the motor frame 6 is fixedly connected to the motor mounting surface, a driving pulley 7 is fixedly sleeved on the rotating shaft of the motor 8, a synchronous driven pulley 11 is fixedly connected to the middle of the surface of the filter turntable 2 facing the bottom of the chamber 9, the synchronous belt 5 is tensioned on the driving pulley 7 and the synchronous driven pulley 11, the driving pulley 7 drives the synchronous driven pulley 11 to rotate through the synchronous belt 5, and the synchronous driven pulley 11 drives the filter turntable 2 to rotate synchronously. Another replaceable form of the drive assembly is that the motor 8 can drive the filter turntable 2 to rotate through a gear transmission mechanism.

[0042] Filters are installed in the filter mounting holes 10 as required, and the switch button drives the driving component through the electronic control system. The driving component drives the filter turntable 2 to rotate, and the position is detected through the magnetic induction of the Hall sensor and the magnet, so that a group of filter mounting holes 10 are concentric with the imaging light path holes 13, that is, the corresponding hole positions are switched as required.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An electric filter device based on the imaging optical path of a slit lamp microscope, characterized in that: Includes filter holder, filter turntable and drive assembly; The filter seat has a chamber for accommodating the filter turntable, and the filter turntable is rotatably connected in the chamber; The driving assembly is connected to the filter seat, and the driving assembly is used to drive the filter turntable to rotate. The filter turntable is provided with at least one group of filter mounting holes for mounting filters.

2. According to claim 1, the electric filter device based on the imaging optical path of a slit lamp microscope is characterized in that: The locking screw passes through the central axis of the chamber, the inner ring of the bearing is fixedly sleeved on the locking screw, and the inner hole of the filter turntable is fixedly sleeved on the outer ring of the bearing so that the filter turntable rotates relative to the locking screw.

3. According to claim 2, the electric filter device based on the imaging optical path of a slit lamp microscope is characterized in that: The filter turntable is provided with at least two groups of filter mounting holes, and each group of filter mounting holes includes two filter mounting holes.

4. According to claim 3, the electric filter device based on the imaging optical path of a slit lamp microscope is characterized in that: The outer end of the filter seat is provided with a snap-on interface.

5. According to claim 4, the electric filter device based on the imaging optical path of a slit lamp microscope is characterized in that: The driving assembly includes a motor frame, a motor, a driving pulley, a synchronous driven pulley and a driven pulley; The filter seat has a motor mounting surface, and a through hole communicating with the interior of the chamber is formed on the motor mounting surface; The motor frame is fixedly connected to the motor mounting surface; the motor is fixedly connected to the motor frame; The rotating shaft of the motor is fixedly sleeved with a driving pulley, and a synchronous driven pulley is fixedly connected to the central axis of the filter turntable facing the bottom of the chamber, the synchronous belt is tensioned on the driving pulley and the synchronous driven pulley, and the synchronous belt is located in the through hole; The driving pulley drives the synchronous driven pulley to rotate through a synchronous belt, and the synchronous driven pulley drives the filter turntable to rotate synchronously.

6. According to claim 4, the electric filter device based on the imaging optical path of a slit lamp microscope is characterized in that: The motor drives the filter turntable to rotate through a gear transmission mechanism.

7. The electric filter device based on the imaging optical path of a slit lamp microscope according to any one of claims 1 to 6, characterized in that: A Hall sensor is arranged in the cavity of the filter seat, and a magnet is arranged on the filter turntable. The rotation position of the filter turntable is detected by the magnetic induction of the Hall sensor.

8. The electric filter device based on the imaging optical path of a slit lamp microscope according to any one of claims 1 to 6, characterized in that: A photoelectric sensor for detecting the position of the filter turntable is arranged in the cavity of the filter seat.

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