Microscope external fiber optic illumination device

Abstract

The utility model provides a kind of microscope external optical fiber lighting device, it is related to microscope lighting device technical field, including optical fiber, the one end of optical fiber corresponds with light source, and the other end extends to the light path entrance of the illumination system of microscope;The illumination system is sequentially provided with variable aperture diaphragm, condensing system and objective along light path propagation direction, and the aperture size of variable aperture diaphragm is changed to control the numerical aperture of illumination;The light emitted by light source is transmitted to variable aperture diaphragm by optical fiber, and clear micrograph is formed by condensing system, objective.The utility model has the beneficial effect of not only breaking through the constraint of traditional built-in illumination in physical space, and heat source can be completely isolated in microscope outside, avoid the occupation of light source to microscope internal space and the influence of cooling fan vibration on microscopic observation, in addition, different microscopes can be matched by different light sources, with flexible adaptive expansibility, can be widely applied to various microscopic observation systems.

Description

Technical Field

[0001] This utility model relates to the field of microscope illumination devices, and in particular to an external fiber optic illumination device for a microscope. Background Technology

[0002] As an important optical instrument, the microscope plays a crucial role in many fields such as scientific research, medicine, and industry. The microscope's illumination system is an indispensable and essential component. For observing objects that do not emit their own light, the illumination system is vital, providing sufficient and uniform illumination to ensure good lighting on the image plane, allowing the observer to clearly see the object's details.

[0003] Traditional microscope illumination systems typically employ low-pressure tungsten filament lamps, halogen lamps, xenon lamps, ultra-high-pressure mercury lamps, and LED light sources. These light sources are generally housed inside the microscope to illuminate the sample. However, this internal light source approach has several drawbacks. Firstly, the installation of the light source occupies limited space within the microscope, potentially restricting the layout and design of other components and affecting the overall compactness and integration of the microscope. Secondly, these light sources often generate significant heat during illumination. To dissipate this heat, cooling fans must be installed. However, these fans generate vibrations during operation, which are transmitted to various components of the microscope, affecting the user's observation of the sample and causing image flickering, blurring, and other problems, thus reducing the accuracy and reliability of the observation. Therefore, this method of installing the light source inside the microscope has significant limitations in practical use. Utility Model Content

[0004] This utility model overcomes the shortcomings of the prior art and provides an external fiber optic illumination device for a microscope. It uses optical fiber to transmit light emitted from an external light source to the microscope's illumination system. By controlling the aperture size of the variable aperture stop, the sample can obtain high-brightness illumination, making the microscope image clearer.

[0005] To solve the above-mentioned technical problems, the utility model is implemented through the following technical solution:

[0006] An external fiber optic illumination device for a microscope includes an optical fiber, one end of which corresponds to a light source, and the other end extends to the optical path entrance of the microscope's illumination system. The illumination system is provided with a variable aperture stop, a condenser system, and an objective lens in sequence along the optical path propagation direction. The numerical aperture of the illumination is controlled by changing the size of the variable aperture stop. The light emitted from the light source is transmitted through the optical fiber to the variable aperture stop, and then passes through the condenser system and the objective lens to form a clear microscopic image.

[0007] Furthermore, the optical fiber is fixed to the housing of the lighting system by a connection structure, which includes screw fasteners.

[0008] Furthermore, the illumination device constitutes a transmission illumination system. After the beam is adjusted by the aperture of the variable aperture stop, it is focused by the focusing system and penetrates the sample, eventually forming a microscopic image through the objective lens.

[0009] Furthermore, the illumination device constitutes a reflective illumination system. After the beam is adjusted by the aperture of the variable aperture stop, it is projected onto the sample surface through the focusing system and the objective lens. The reflected light path then passes through the objective lens again to form a microscopic image.

[0010] Compared with existing technologies, the advantages of this utility model are:

[0011] It not only breaks through the physical space constraints of traditional built-in lighting, but also completely isolates the heat source outside the microscope, avoiding the occupation of the internal space of the microscope by the light source and the impact of the vibration of the cooling fan on microscopic observation. In addition, it can be matched with different microscopes by different light sources, with flexible adaptability and expandability, and can be widely used in various microscopic observation systems. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the utility model and, together with the embodiments of the utility model, are used to explain the utility model. They do not constitute a limitation on the utility model. In the drawings:

[0013] Figure 1 This is a schematic diagram of the structure of a transmission lighting system composed of lighting devices;

[0014] Figure 2 This is a schematic diagram of the structure of a reflective lighting system composed of lighting devices.

[0015] In the figure: 1. Objective lens; 2. Sample; 3. Condensing system; 4. Variable aperture stop; 5. Optical fiber. Detailed Implementation

[0016] The preferred embodiments of the utility model are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the utility model.

[0017] like Figures 1 to 2 As shown, this utility model claims protection for an external fiber optic illumination device for a microscope, including an optical fiber 5. One end of the optical fiber 5 is correspondingly disposed with a light source, and the other end extends to the optical path entrance of the microscope's illumination system. The optical fiber 5 is fixed to the housing of the illumination system by a connecting structure. The connecting structure can be a mechanical fixing structure or a screw fastener, primarily to ensure stable installation of the optical fiber in the illumination system and guarantee normal optical path transmission.

[0018] In this embodiment, the illumination system is provided with a variable aperture stop 4, a condenser system 3, and an objective lens 1 in sequence along the optical path propagation direction. The variable aperture stop 4 is used to adjust the numerical aperture of the illumination, and the condenser system 3 is used to converge the illumination beam. The light emitted by the light source is transmitted to the variable aperture stop 4 through the optical fiber 5. By changing the aperture size of the variable aperture stop 4, the numerical aperture of the illumination is controlled, and then a clear microscopic image is formed by the condenser system 3 and the objective lens 1.

[0019] In one embodiment, the illumination device in this apparatus can constitute a transmission illumination system. In the transmission illumination system, the light beam, after being adjusted by the variable aperture stop 4, is converged by the condenser system 3 and penetrates the sample 2, ultimately forming a microscopic image through the objective lens 1. That is, when it is necessary to observe the sample, the light emitted by the light source first enters the optical fiber 5, which transmits the light to the optical path entrance of the illumination system, reaching the variable aperture stop 4. By adjusting the size of the variable aperture stop 4, the numerical aperture of the illumination can be precisely controlled to meet the needs of observing different samples. Then, the light is converged by the condenser system 3, allowing it to focus on the sample 2. After penetrating the sample, the light is magnified and imaged by the objective lens 1, thus forming a clear microscopic image in the microscope's field of view, facilitating detailed observation and analysis of the sample by the operator.

[0020] In another embodiment, the illumination device can also constitute a reflective illumination system. In the reflective illumination system, after the aperture of the variable aperture stop 4 is adjusted, the light beam is projected onto the surface of the sample 2 through the condenser system 3 and the objective lens 1. The reflected light path then passes through the objective lens 1 again to form a microscopic image. That is, the light emitted by the light source is also first transmitted to the illumination system through the optical fiber 5. After the aperture of the variable aperture stop 4 is adjusted, the light beam is projected onto the surface of the sample 2 through the condenser system 3 and the objective lens 1. The light reflected from the surface of the sample 2 passes through the objective lens 1 again, ultimately forming a microscopic image.

[0021] In summary, this external fiber optic illumination device for microscopes provides high-brightness, uniform illumination to the sample, resulting in clearer microscope imaging. This design can be easily integrated into existing systems, further expanding product functionality and making it widely applicable to various microscopic observation systems.

[0022] Finally, it should be noted that the above are merely preferred embodiments of the utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. A microscope external fiber optic illumination device, characterized in that, The system includes an optical fiber (5), one end of which corresponds to the light source, and the other end extends to the optical path entrance of the microscope's illumination system. The illumination system is provided with a variable aperture stop (4), a condenser system (3), and an objective lens (1) in sequence along the optical path propagation direction. The numerical aperture of the illumination is controlled by changing the aperture size of the variable aperture stop (4). The light emitted by the light source is transmitted to the variable aperture stop (4) through the optical fiber (5), and forms a clear microscopic image through the condenser system (3) and the objective lens (1).

2. The microscope external fiber optic illumination device according to claim 1, characterized in that, The optical fiber (5) is fixed to the housing of the lighting system by a connection structure, which includes screw fasteners.

3. The microscope external fiber optic illumination device according to claim 1, characterized in that, The illumination device constitutes a transmission illumination system. After the beam is adjusted by the aperture of the variable aperture stop (4), it is focused by the focusing system (3) and penetrates the sample (2), and finally forms a microscopic image through the objective lens (1).

4. The microscope external fiber optic illumination device according to claim 1, characterized in that, The illumination device constitutes a reflective illumination system. After the beam is adjusted by the aperture of the variable aperture stop (4), it is projected onto the surface of the sample (2) through the focusing system and the objective lens (1). The reflected light path passes through the objective lens (1) again to form a microscopic image.

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