Multipath detection microscopic optical system

Abstract

The utility model discloses a multi-path detection microscopic optical system, comprising a vertically arranged support member, the support member is provided with a horizontal objective table and two light sources which are respectively arranged on the upper and lower sides of the objective table and used for irradiating the objective table, and the support member is sequentially provided with objective lenses and imaging devices on the upper and lower sides of the objective table; the light source and the objective table are arranged on the two opposite sides of the supporting piece. The supporting piece is provided with a beam splitter used for reflecting light emitted by the light source to the objective lens and transmitting light returned by the objective lens to the imaging device. The device is high in space utilization rate and good in stability.

Description

Technical Field

[0001] The utility model relates to a microscopic optical system, in particular to a multi-path detection microscopic optical system. Background Art

[0002] In order to meet various light processing requirements, existing microscopic optical systems often set up multi-layer optical platforms, and build various optical paths on the optical platforms to process light. The light source and objective lens, as the two most expensive components in the microscopic optical system, need to be able to be multiplexed by multiple optical paths. Normally, the light source, objective lens and stage are built on the same optical platform. If there are multiple light sources and objective lenses, the horizontal space occupied by this layer will be larger, increasing the lateral volume of the entire microscopic optical system. During normal use, the microscopic optical system is placed on the test bench. The horizontal space is limited, but there is actually a large amount of unused space in the vertical direction. The overall space utilization rate of the existing microscopic optical system is low. Moreover, when the optical system is built by multi-layer optical platforms, if a certain layer of the optical platform is touched during use, it may cause the optical device of this layer to shift, and it takes a lot of time to recalibrate the light path. Summary of the Invention

[0003] Purpose of the utility model: The purpose of the utility model is to provide a multi-path detection microscopic optical system with small lateral space occupation and good stability.

[0004] Technical solution: The multi-path detection microscope optical system described in the utility model includes a vertically arranged support member, on which is provided a horizontal stage and two light sources respectively arranged on the upper and lower sides of the stage for illuminating the stage. The support member is also provided with objective lenses and imaging devices on the upper and lower sides of the stage in sequence.

[0005] Based on the above technical solution, a light source for providing illumination is provided in the middle of the support member, and an objective lens and an imaging device are provided on the upper and lower sides of the stage in sequence to image the stage. That is, a complete microscope optical system is formed on the upper and lower sides of the stage, and multiple light sources and objective lenses are no longer laid out in one layer, which effectively utilizes the vertical space and improves the overall space utilization of the device. The light source, objective lens and imaging device are all arranged on the support member, which is equivalent to being fixed on the same main body, rather than being fixed on different platforms respectively. There is no need to readjust the light path due to collision with a platform, thereby improving the overall stability of the device.

[0006] Preferably, the light source and the objective lens are arranged on opposite sides of the support.

[0007] Because the volume of the light source may be large, if it is set on the same side as the objective lens, in order to separate the two from each other, the vertical length of the support must be larger. However, if the two are set on opposite sides of the support, their projections on the support can partially overlap, and the vertical length of the support can be set shorter, reducing the overall volume of the device.

[0008] Preferably, the support member is provided with a beam splitter for reflecting light emitted by the light source to the objective lens and transmitting light returned by the objective lens to the imaging device.

[0009] Setting up a beam splitter can adjust the light emitted by the light source to be directed vertically toward the stage, so that the objective lens and the imaging device can be set vertically coaxially, without having to tilt their axes to match the direction of the light emitted by the light source. If the objective lens and the imaging device are set at an angle, they will inevitably occupy more horizontal space, so this setting improves space utilization.

[0010] Preferably, the light source, objective lens and beam splitter are slidably connected to the support.

[0011] The light source, objective lens and beam splitter are slidably connected to the support. When it is necessary to take or place a slide on the stage, they can be slid away from the stage to free up more operating space.

[0012] Preferably, the imaging device includes a light processing device and an image acquisition device.

[0013] Preferably, the light processing devices of the two imaging devices have different structures.

[0014] The light processing devices of the two imaging devices have different structures and can process the light differently, thus meeting the requirements of performing multiple processing on the light.

[0015] Preferably, the light source includes a light emitting device and a plurality of lenses.

[0016] The light source includes a light emitting device and multiple lenses that can diffuse or converge the light emitted by the light emitting device to meet subsequent use requirements.

[0017] Preferably, a plurality of objective lenses are arranged on a turntable which can rotate and switch different objective lenses toward the stage.

[0018] There are multiple objective lenses and they are arranged on a turntable that can rotate and switch the objective lenses. The objective lenses can be switched according to actual needs, which is more convenient to use.

[0019] Beneficial effects: Compared with the prior art, the present invention has the following beneficial effects: a light source and an objective lens are respectively arranged on the upper and lower sides of the stage, and an imaging device is not configured for each objective lens, which makes full use of the vertical space and occupies little horizontal space; secondly, all optical devices are connected to the support and are no longer arranged in layers, thereby improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of this optical system;

[0021] Figure 2 This is the optical path diagram of this optical system. DETAILED DESCRIPTION

[0022] As shown in the figure, the multi-channel detection microscope optical system described in the utility model includes a vertically arranged support member 1, on which a horizontal stage 2 and two light sources 3 are arranged on the upper and lower sides of the stage 2 for illuminating the stage 2. The support member 1 is also provided with an objective lens 4 and an imaging device 5 on the upper and lower sides of the stage 2 in sequence.

[0023] The support member 1 is a vertical mounting plate, and the stage 2 is arranged in the middle position on the front side of the support member 1. The objective lens 4, the beam splitter 6 and the imaging device 5 are arranged in sequence from near to far on the front side of the support member 1. The light source 3 is provided on the back side of the support member 1. The light source 3 penetrates the support member 1 and emits light to the beam splitter 6. The beam splitter 6 reflects the light to the objective lens 4. The objective lens converges the light and then photographs the slide on the stage 2. The emitted light from the slide passes through the objective lens 4 and then through the beam splitter 6 to the imaging device 5. The imaging device 5 images the light returned by the objective lens 4 to form a complete microscopic optical system, that is, there is a complete microscopic optical system on the upper and lower sides of the stage 2, which can process light differently.

[0024] The light source 3 includes a light-emitting device and multiple lenses, which can converge or expand the light emitted by the light-emitting device to finally form parallel light; the light source 3 is arranged on the rear side of the support 1, and the objective lens 4, the stage 2 and the imaging device 5 are arranged on the front side of the support 1. In this way, space for the light source 3 can be saved on the front side of the support 1, so that the height of the support 1 is reduced, and the space occupied by the entire device is reduced; of course, the light source 3 can also be arranged on the front side.

[0025] The objective lens 4 adopts an objective lens turret with multiple objective lenses, and the corresponding objective lens can be selected as needed. The objective lens turret can also be provided with an empty hole without an objective lens. In this way, when the upper light path needs to use the lower light source 3, the objective lens turret can be switched to the empty hole, allowing the lower light source 3 to directly shine through the empty hole onto the stage to achieve transmitted illumination. If the lower light path needs to use the upper light source 3, the same operation is performed.

[0026] The light source 3 , objective lens 4 and beam splitter 6 can be slidably connected to the support 1 and can be adaptively moved when taking and placing the slide, or they can be fixedly connected to the support 1 as long as there is enough space between the objective lens 4 and the stage 2 .

[0027] The imaging device 5 includes a light processing device and an image acquisition device. The light processing device includes multiple lenses of different types, which can deflect light or filter out specific light for acquisition and processing by the image acquisition device. The image acquisition device can be a photosensitive electronic component such as a CCD, or an eyepiece for direct observation. The light processing devices of the two imaging devices 5 can be the same or different. The specific structure of the imaging device 5 can be replaced according to actual needs, and the light source 3 and the objective lens 4 can be reused, and which light source 3 to use can be selected according to needs.

[0028] The beam splitter 6 can be at an angle of 45° to the horizontal plane, and the light source 3 emits horizontal light, which is reflected by the beam splitter 6 and directed toward the objective lens 4; the beam splitter 6 can also be not set, and the light source 3 passes through the support 1 and directly illuminates the stage 2 at an angle. However, in order to better collect the reflected light of the slide, the objective lens 4 and the imaging device 5 must also be set to a corresponding tilt, which will increase the lateral space of the entire device.

Claims

1. A multi-path detection microscopic optical system, characterized in that: The invention comprises a vertically arranged support member (1), wherein the support member (1) is provided with a horizontal stage (2) and two light sources (3) respectively arranged on the upper and lower sides of the stage (2) for illuminating the stage (2), and the support member (1) is also provided with an objective lens (4) and an imaging device (5) in sequence on the upper and lower sides of the stage (2).

2. The multi-path detection microscopic optical system according to claim 1, characterized in that: The light source (3) and the objective lens (4) are arranged on two opposite sides of the support member (1).

3. The multi-path detection microscopic optical system according to claim 2, characterized in that: The support member (1) is provided with a beam splitter (6) for reflecting light emitted by the light source (3) to the objective lens (4) and transmitting light returned by the objective lens (4) to the imaging device (5).

4. The multi-path detection microscopic optical system according to claim 3, characterized in that: The light source (3), objective lens (4) and beam splitter (6) are slidably connected to the support (1).

5. The multi-path detection microscopic optical system according to claim 1, characterized in that: The imaging device (5) comprises a light processing device and an image acquisition device.

6. The multi-path detection microscopic optical system according to claim 5, characterized in that: The light processing devices of the two imaging devices (5) have different structures.

7. The multi-path detection microscopic optical system according to claim 1, characterized in that: The light source (3) comprises a light-emitting device and a plurality of lenses.

8. The multi-path detection microscopic optical system according to claim 1, characterized in that: A plurality of objective lenses (4) are arranged on a turntable capable of rotating and switching different objective lenses (4) toward the stage (2).

Images