CN219320107U

CN219320107U - CCD optical detection device

Info

Publication number: CN219320107U
Application number: CN202320263909.0U
Authority: CN
Inventors: 董欢; 凌燕; 杨路; 李奔; 董婷婷; 王宝泉; 钱进; 陈德智; 王加义; 李寅龙; 李静
Original assignee: BEIJING ZHONGSHENG JINYU DIAGNOSIS TECHNOLOGY CO LTD
Current assignee: BEIJING ZHONGSHENG JINYU DIAGNOSIS TECHNOLOGY CO LTD
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-07-07
Anticipated expiration: 2033-02-13

Abstract

The utility model relates to the technical field of optical detection, in particular to a CCD optical detection device. A CCD optical detection device, comprising: a housing; the light-emitting component is arranged at the bottom of the shell; the CCD camera is arranged at the bottom of the shell and is positioned in the center of the shell; the reaction assembly is arranged at the upper end of the shell and comprises a detection position and a transparent cover plate, the transparent cover plate is arranged at the upper end of the shell, the detection position is arranged in the transparent cover plate, a sample and a biochemical reaction reagent can be placed in the detection position, and the detection position is arranged corresponding to the CCD camera; the shading sleeve is arranged in the shell and positioned between the CCD camera and the detection position, and two ends of the opening of the shading sleeve face the CCD camera and the detection position respectively. Through setting up the shading cover between CCD camera and detection position, the shading cover can cut off incident light to can the light of luminous subassembly directly get into the CCD camera through the reflection, prevent that reflected light from getting into the camera lens and causing the exposure.

Description

CCD optical detection device

Technical Field

The utility model relates to the technical field of optical detection, in particular to a CCD optical detection device.

Background

In recent years, image measurement, image recognition, and image sensing technologies based on the CCD (Charge Couple Device, optical coupling assembly) imaging principle have been rapidly developed. Currently, the CCD image method is used for calibrating and measuring luminous signals, and the method is applied to the field of detection of medical biochemical indexes.

The working principle of the CCD detector is that after a light source irradiates a sample at a certain angle, light projected by a workpiece or reflected by the workpiece enters a lens of a photosensitive element to form an image, photoelectric signals are converted into digital image signals through an image sensor and an image acquisition card, and analysis software performs image processing technology to distinguish image information through a preset digital model and parameters. The CCD imaging intensity has a linear relationship with ≡example of ≡radiant flux, so that the sample can be quantitatively detected by measuring the imaging signal intensity. CCD imaging quality is better than CMOS imaging sensitivity ≡and resolution, and has been used in precision measurement field.

However, in the CCD detector in the prior art, since the CCD detector is specularly reflective, specular reflection light is generated, and when the specular reflection light enters the lens, local overexposure of the photosensitive device is caused, so that the imaging of the part is lost, and a spot noise is formed.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is that when the specular reflection light enters the lens in the prior art, local overexposure of the photosensitive device is caused, and the defect of light spot noise point is formed due to the loss of information in the imaging of the part, so that the CCD optical detection device is provided.

In order to solve the above-mentioned problems, the present utility model provides a CCD optical detection device comprising:

a housing;

the light-emitting component is arranged at the bottom of the shell;

the CCD camera is arranged at the bottom of the shell and is positioned in the center of the shell;

the reaction assembly is arranged at the upper end of the shell and comprises a detection position and a transparent cover plate, the transparent cover plate is arranged at the upper end of the shell in a covering manner, the detection position is arranged in the transparent cover plate, a sample and a biochemical reaction reagent can be placed in the detection position, and the detection position is arranged corresponding to the CCD camera;

the shading sleeve is arranged in the shell and positioned between the CCD camera and the detection position, and two ends of the opening of the shading sleeve face towards the CCD camera and the detection position respectively.

Furthermore, the shading sleeve is of a tapered structure, and the inner diameter of the shading sleeve gradually decreases from the inlet to the outlet.

Further, the method further comprises the following steps:

the inferior gram plate, inferior gram plate sets up transparent apron with between the shading cover, inferior gram plate's lower terminal surface with the upper end contact of shading cover, inferior gram plate's upper end face with the lower terminal surface contact of transparent apron.

Further, a light homogenizing plate is circumferentially arranged at the upper end of the shading sleeve, and the light homogenizing plate is positioned at the upper end of the light emitting assembly.

Further, the light-emitting component comprises a light source plate and lamp beads, the light source plate is arranged at the bottom of the shell, and the lamp beads are arranged on the light source plate.

Further, the method further comprises the following steps:

and the circuit system is respectively connected with the lamp beads and the CCD camera.

Further, a cover is arranged on the shell, and the cover is arranged on the transparent cover plate.

Further, the surface of the cover is provided with a reflective pattern layer.

Further, the lamp beads are LED lamp beads.

Further, the light source plate is circular.

The utility model has the following advantages:

1. the utility model provides a CCD optical detection device which comprises a shell, a light-emitting component, a CCD camera, a reaction component and a shading sleeve. The light-emitting component is arranged at the bottom of the shell; the CCD camera is arranged at the bottom of the shell and is positioned at the center of the shell; the reaction assembly is arranged at the upper end of the shell and comprises a detection position and a transparent cover plate, the transparent cover plate is arranged at the upper end of the shell in a covering manner, the detection position is arranged in the transparent cover plate, a sample and a biochemical reaction reagent can be placed in the detection position, and the detection position is arranged corresponding to the CCD camera; the shading sleeve is arranged in the shell, the shading sleeve is positioned between the CCD camera and the detection position, and two ends of the shading sleeve opening face towards the CCD camera and the detection position respectively.

According to the CCD optical detection device with the structure, the light shielding sleeve is arranged between the CCD camera and the detection position, incident light rays can be cut off by the light shielding sleeve, so that light of the luminous component directly enters the CCD camera through reflection, further, reflected light rays are prevented from entering the lens to cause exposure, and the detection precision and the stability of the detection device can be effectively improved.

2. The CCD optical detection device with the structure has the advantages that the light shielding sleeve is of a tapered structure, the extension from the upper end to the lower end is reverse, the inner diameter is gradually reduced, so that reflected light can be effectively collected, a sample can be better detected, and further, the detection precision is improved.

3. The CCD optical detection device with the structure is characterized in that a sub-force gram plate is arranged between the transparent cover plate and the shading sleeve, and the light transmittance of the sub-force gram plate is more than 90%, so that the reflection effect can be effectively improved.

4. According to the CCD optical detection device with the structure, the light homogenizing plate is circumferentially arranged at the upper end of the shading sleeve, and reflected light can be uniformly dispersed by the light homogenizing plate, so that a sample can be better irradiated.

5. The CCD optical detection device with the structure is characterized in that the cover is arranged on the shell, the reflection pattern layer is arranged on the surface of the cover, and the reflection pattern layer can better reflect reflected light, so that the light irradiates the sample, and further, the detection precision is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a CCD optical detection device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram illustrating the operation of a CCD optical detection device according to an embodiment of the present utility model;

reference numerals illustrate:

1. a housing; 2. a light emitting assembly; 3. a CCD camera; 4. a transparent cover plate; 5. detecting a position; 6. a shading sleeve; 7. a sub-force gram plate; 8. a light homogenizing plate; 9. and a cover.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 to 2, the present embodiment discloses a CCD optical detection device, comprising: a shell 1, a luminous component 2, a CCD camera 3, a reaction component and a shading sleeve 6. The light emitting assembly 2 is disposed at the bottom of the housing 1. The CCD camera 3 is disposed at the bottom of the housing 1 and is located at the center of the housing 1. The reaction unit sets up the upper end at casing 1, and the reaction unit includes detection position 5 and transparent cover plate 4, and transparent cover plate 4 lid is established in the upper end of casing 1, and detection position 5 sets up in transparent cover plate 4, can place sample and biochemical reaction reagent in the detection position 5, and detection position 5 corresponds the setting with CCD camera 3. The shading sleeve 6 is arranged in the shell 1, the shading sleeve 6 is positioned between the CCD camera 3 and the detection position 5, and two ends of the opening of the shading sleeve 6 face the CCD camera 3 and the detection position 5 respectively.

Specifically, transparent apron 4 card is established in the opening part at casing 1 top, is provided with the detection position 5 that is used for placing sample and biochemical reaction reagent in the transparent apron 4, and detection position 5 and casing 1 coaxial setting. The CCD camera 3 is arranged at the bottom of the shell 1, and the CCD camera 3 is also coaxially arranged with the detection position 5, the light emitting components 2 are arranged at the side of the CCD camera 3, in FIG. 1, two light emitting components 2 are arranged at the bottom of the shell 1, and the two light emitting components 2 are arranged at two sides of the CCD camera 3. A light shielding sleeve 6 is arranged between the CCD camera 3 and the detection position 5, the upper end opening of the light shielding sleeve 6 faces the detection position 5, and the lower end opening of the light shielding sleeve 6 faces the CCD camera 3. The light emitting component 2 emits light which irradiates on the transparent cover plate 4 and is refracted into the detection position 5, and then diffuse reflection is generated, and the image is captured by the CCD camera 3. The shading sleeve 6 can effectively block other light rays, prevent the other light rays from forming light noise points, and simultaneously enable the CCD camera 3 to capture only the light rays of the detection position 5.

Further, the shade sleeve 6 has a tapered structure, and the inner diameter thereof gradually decreases from the inlet to the outlet thereof.

Specifically, the upper end opening of the light shielding sleeve 6 is an inlet, the lower end opening of the light shielding sleeve 6 is an outlet, and the inner diameter from the upper end opening to the lower end opening of the light shielding sleeve 6 is gradually reduced, so that the CCD camera 3 can capture images better.

Further, the method further comprises the following steps: a sub-force gram plate 7. The inferior gram plate 7 is arranged between the transparent cover plate 4 and the shading sleeve 6, the lower end face of the inferior gram plate 7 is contacted with the upper end of the shading sleeve 6, and the upper end face of the inferior gram plate 7 is contacted with the lower end face of the transparent cover plate 4.

Specifically, the sub-force plate 7 is of a convex structure, the sub-force plate 7 is provided with a boss, the upper end face of the boss is connected with the lower end face of the transparent cover plate 4, and the lower end face of the sub-force plate 7 is connected with the upper end opening of the shading sleeve 6. The transmittance of the light-emitting component 2 is greater than 90%, the light emitted by the light-emitting component 2 irradiates the light-emitting component 7, and the light irradiates the detection position 5 on the transparent cover plate 4 through the light-emitting component 7. Preferably, in this embodiment, the material of the elike plate 7 is polymethyl methacrylate PMMA. In other alternative embodiments, the material of the sub-force plate 7 may be Polystyrene (PS), polycarbonate (PC) and AS resin.

Further, a light homogenizing plate 8 is circumferentially arranged at the upper end of the light shielding sleeve 6, and the light homogenizing plate 8 is located at the upper end of the light emitting component 2.

Specifically, the lower extreme of inferior power gram board 7 still is provided with even light board 8, and even light board 8 has the through-hole that is fit for light-shielding cover 6 to pass, and the through-hole inner diameter face is connected with the outer peripheral face of light-shielding cover 6. The light emitting unit 2 emits light onto the light equalizing plate 8, and the light equalizing plate 8 converts a line light source or a point light source provided by the light emitting unit 2 into a surface light source, and then the light is captured by the CCD camera 3 below via the detection bit 5 via the sub-power plate 7.

Further, the light emitting component 2 comprises a light source plate and lamp beads, the light source plate is arranged at the bottom of the shell 1, and the lamp beads are arranged on the light source plate.

Specifically, the lamp beads are divided into blue lamp beads, red lamp beads and green lamp beads, and different lamp beads are selected according to the wavelength of emitted light. The surface of the light source plate is provided with a reflecting surface, and the light emitted by the lamp beads is directly reflected to the light homogenizing plate 8 or is reflected to the light homogenizing plate through the light source plate.

Preferably, in this embodiment, the lamp beads are LED lamp beads. In other alternative embodiments, the light beads are LED light strips.

Preferably, in this embodiment, the light source plate is circular.

Further, the method further comprises the following steps: and (3) circuit system. The circuit system is respectively connected with the lamp bead and the CCD camera 3.

Specifically, the circuit system comprises a micro control unit, a light source control circuit, an amplifying circuit, an AD conversion circuit and a WIFI circuit module. The micro-control unit is connected with the lamp beads and the CCD camera 3 through the light source control circuit, the CCD camera 3 is connected with the micro-control unit through the amplifying circuit and the AD conversion circuit, and the micro-control unit is connected with the WIFI circuit module. The program formulated by the micro control unit is respectively connected with the power supply, the lamp beads and the CCD camera 3 through the light source control circuit. The light emitted from the lamp beads reaches the light-homogenizing plate 8 directly or via reflection from the light source plate. The light-homogenizing plate 8 converts a line light source or a point light source provided by the lamp beads into a surface light source, and then light is captured by the CCD camera 3 below through the detection position 5 via the sub-force gram plate 7. The electric signal captured by the CCD camera 3 is transmitted into the micro-control unit through the amplifying circuit and the AD conversion circuit, and the micro-control unit uploads the image signal to the computer terminal for analysis through the WIFI module.

Further, a cover 9 is provided on the housing 1, and the cover 9 is provided on the transparent cover plate 4.

Further, the surface of the cover 9 is provided with a reflective layer. The reflective layer can better reflect the reflected light, so that the light irradiates the sample. And the detection precision is improved.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. A CCD optical detection device, comprising:

a housing (1);

the light-emitting component (2) is arranged at the bottom of the shell (1);

the CCD camera (3) is arranged at the bottom of the shell (1) and is positioned in the center of the shell (1);

the reaction assembly is arranged at the upper end of the shell (1), the reaction assembly comprises a detection position (5) and a transparent cover plate (4), the transparent cover plate (4) is arranged at the upper end of the shell (1) in a covering mode, the detection position (5) is arranged in the transparent cover plate (4), a sample and a biochemical reaction reagent can be placed in the detection position (5), and the detection position (5) and the CCD camera (3) are arranged correspondingly;

the shading sleeve (6) is arranged in the shell (1), the shading sleeve (6) is positioned between the CCD camera (3) and the detection position (5), and two ends of the opening of the shading sleeve (6) face towards the CCD camera (3) and the detection position (5) respectively.

2. The CCD optical detection device according to claim 1, wherein:

the shading sleeve (6) is of a tapered structure, and the inner diameter of the shading sleeve is gradually reduced from the inlet to the outlet.

3. The CCD optical detection device according to claim 1, further comprising:

the inferior gram board (7), inferior gram board (7) set up transparent apron (4) with between light-proof boot (6), inferior gram board (7) lower terminal surface with the upper end contact of light-proof boot (6), inferior gram board (7) up end with the lower terminal surface contact of transparent apron (4).

4. A CCD optical detection device according to claim 3, characterized in that:

the upper end circumference of light-shielding cover (6) is provided with dodging board (8), dodging board (8) are located the upper end of luminous subassembly (2).

5. The CCD optical detection device according to any one of claims 1 to 4, wherein:

the light-emitting assembly (2) comprises a light source plate and lamp beads, the light source plate is arranged at the bottom of the shell (1), and the lamp beads are arranged on the light source plate.

6. The CCD optical detection device of claim 5, further comprising:

and the circuit system is respectively connected with the lamp beads and the CCD camera (3).

7. The CCD optical detection device according to claim 1, wherein:

the shell (1) is provided with a cover (9), and the cover (9) is covered on the transparent cover plate (4).

8. The CCD optical detection device according to claim 7, wherein:

the surface of the cover (9) is provided with a reflective pattern layer.

9. The CCD optical detection device according to claim 5, wherein:

the lamp beads are LED lamp beads.

10. The CCD optical detection device according to claim 5, wherein:

the light source plate is circular.