An illumination module for a surgical microscope
Patent Information
- Application Number
- CN202522149909.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-10-11
AI Technical Summary
[0004]为了克服现有技术的不足，本实用新型的目的在于提供一种手术显微镜的照明模块，其可方便于输出不同的照明模式，解决单一可见光照明下深层或无色组织显影不足的问题，节省操作时间，并可使结构较为紧凑
[0015]相比现有技术，本实用新型的有益效果在于：本实用新型提供的一种手术显微镜的照明模块，其通过采用可见光照明单元、荧光照明单元、分光元件和照明投射单元的结合设计，可依据需求而使可见光照明单元、荧光照明单元选择性工作，并利用分光元件使朝向其射入的至少部分光谱射向照明投射单元，可方便于输出不同的照明模式，解决单一可见光照明下深层或无色组织显影不足的问题，满足更多使用需求，节省操作时间，而且，可见光照明单元、荧光照明单元、分光元件和照明投射单元的结合，可使结构较为紧凑，有利于缩小体积；而且，可见光照明单元、荧光照明单元的使用寿命更长，不用频繁更换，降低了使用、维护成本。
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Figure CN224876876U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of surgical microscopes, and more specifically to an illumination module for a surgical microscope. Background Technology
[0002] Traditional surgical microscopes typically output visible light spectrum in their illumination modules, providing visible light illumination modes. However, visible light (380-780 nanometers) has low photon energy, weak ability to penetrate biological tissue, and limited spectral penetration depth. When encountering deep lesions or highly scattering media (such as cloudy lenses or inflammatory exudates), the light is easily absorbed or scattered, resulting in a significant decrease in image contrast. This can lead to insufficient imaging of deep or colorless tissues under single visible light illumination.
[0003] With the development of technology, surgical microscopes with fluorescence output capabilities have emerged in the industry. However, some surgical microscopes with fluorescence output capabilities are not convenient for outputting different illumination modes, resulting in longer operation times. In addition, the illumination modules of some surgical microscopes with fluorescence output capabilities are relatively large, which limits the compactness of the structure; their light source lifespan is relatively short (usually 500-1000 hours), requiring frequent replacement and increasing maintenance costs. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an illumination module for a surgical microscope, which can conveniently output different illumination modes, solve the problem of insufficient imaging of deep or colorless tissues under single visible light illumination, save operation time, and make the structure more compact.
[0005] The objective of this utility model is achieved through the following technical solution: An illumination module for a surgical microscope includes a visible light illumination unit, a fluorescence illumination unit, a beam splitter, and an illumination projection unit; the beam splitter and the illumination projection unit are arranged sequentially; the visible light illumination unit is used to emit a visible light spectrum toward the beam splitter, and the fluorescence illumination unit is used to emit a fluorescence spectrum toward the beam splitter; the beam splitter is used to direct at least a portion of the spectrum emitted toward it toward the illumination projection unit.
[0006] When a visible light illumination unit irradiates a visible light spectrum toward a beam splitter, the beam splitter is used to direct at least a portion of the visible light spectrum irradiated toward it toward the illumination projection unit; when a fluorescent illumination unit irradiates a fluorescent spectrum toward the beam splitter and a visible light illumination unit irradiates a visible light spectrum toward the beam splitter, the beam splitter is used to cause at least a portion of the fluorescent spectrum irradiated toward it and at least a portion of the visible light spectrum irradiated toward it to form a composite spectrum directed toward the illumination projection unit.
[0007] The beam-splitting element includes a beam splitter.
[0008] The visible light spectrum emitted by the visible light illumination unit has an incident angle of 30°-60° relative to the beam splitter, and the reflectance R of the beam splitter for the visible light spectrum is greater than 98%; the fluorescence spectrum emitted by the fluorescent illumination unit has an incident angle of 30°-60° relative to the beam splitter, and the transmittance T of the beam splitter for the fluorescence spectrum is greater than 98%.
[0009] The visible light spectrum emitted by the visible light illumination unit has an incident angle of 30°-60° relative to the beam splitter, and the transmittance T of the beam splitter for the visible light spectrum is greater than 98%; the fluorescence spectrum emitted by the fluorescence illumination unit has an incident angle of 30°-60° relative to the beam splitter, and the reflectance R of the beam splitter for the fluorescence spectrum is greater than 98%.
[0010] The fluorescent illumination unit includes a fluorescent light source and a fluorescent filter; the fluorescent filter is disposed between the fluorescent light source and the beam splitter.
[0011] The fluorescent illumination unit further includes a first illumination mirror group, which is disposed between the fluorescent filter and the beam splitter.
[0012] The visible light illumination unit includes a visible light source and a second illumination mirror group, the second illumination mirror group being disposed between the visible light source and the beam splitter.
[0013] The illumination projection unit includes a reflective prism.
[0014] The illumination projection unit also includes a third illumination mirror group, which is disposed between the reflective prism and the beam splitter.
[0015] Compared with existing technologies, the advantages of this utility model are as follows: The illumination module of the surgical microscope provided by this utility model adopts a combined design of a visible light illumination unit, a fluorescence illumination unit, a beam splitter, and an illumination projection unit. The visible light illumination unit and the fluorescence illumination unit can be selectively operated according to requirements. The beam splitter directs at least a portion of the spectrum incident towards it to the illumination projection unit, facilitating the output of different illumination modes. This solves the problem of insufficient imaging of deep or colorless tissues under single visible light illumination, meeting more usage needs and saving operation time. Furthermore, the combination of the visible light illumination unit, the fluorescence illumination unit, the beam splitter, and the illumination projection unit results in a more compact structure, which is beneficial for reducing size. Moreover, the visible light illumination unit and the fluorescence illumination unit have a longer service life, eliminating the need for frequent replacements and reducing usage and maintenance costs. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the first embodiment of the illumination module of the surgical microscope of this utility model in visible light illumination mode; Figure 2 This is a schematic diagram of the first embodiment of the illumination module of the surgical microscope of this utility model in fluorescent illumination mode; Figure 3 This is a schematic diagram of the second embodiment of the illumination module of the surgical microscope of this utility model in visible light illumination mode; Figure 4 This is a schematic diagram of the second embodiment of the illumination module of the surgical microscope of this utility model in fluorescent illumination mode; Among them, 10 is a visible light illumination unit; 11 is a visible light source; 12 is a second illumination mirror group; 20 is a fluorescent illumination unit; 21 is a fluorescent source; 22 is a fluorescent filter; 23 is a first illumination mirror group; 30 is a beam splitter; 40 is an illumination projection unit; 41 is a reflecting prism; and 42 is a third illumination mirror group. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0018] like Figure 1-2 As shown, an illumination module for a surgical microscope includes a visible light illumination unit 10, a fluorescence illumination unit 20, a beam splitter 30, and an illumination projection unit 40; the beam splitter 30 and the illumination projection unit 40 are arranged sequentially; the visible light illumination unit 10 is used to emit a visible light spectrum toward the beam splitter 30, and the fluorescence illumination unit 20 is used to emit a fluorescence spectrum toward the beam splitter 30; the beam splitter 30 is used to direct at least a portion of the spectrum emitted toward it toward the illumination projection unit 40.
[0019] This invention provides an illumination module for a surgical microscope, which combines a visible light illumination unit 10, a fluorescence illumination unit 20, a beam splitter 30, and an illumination projection unit 40. The visible light illumination unit 10 and the fluorescence illumination unit 20 can be selectively operated according to requirements. The beam splitter 30 directs at least a portion of the incident spectrum toward the illumination projection unit 40, facilitating the output of different illumination modes. This solves the problem of insufficient visualization of deep or colorless tissues under single visible light illumination, enhances the information richness of the surgical field, meets more diverse usage needs, and has a more compact structure.
[0020] Preferably, when the visible light illumination unit 10 emits a visible light spectrum toward the beam splitter 30, the beam splitter 30 directs at least a portion of the emitted visible light spectrum toward the illumination projection unit 40; when the fluorescence illumination unit 20 emits a fluorescence spectrum toward the beam splitter 30 and the visible light illumination unit 10 emits a visible light spectrum toward the beam splitter 30, the beam splitter 30 directs at least a portion of the emitted fluorescence spectrum and at least a portion of the emitted visible light spectrum to form a composite spectrum directed toward the illumination projection unit 40. In use, only the visible light illumination unit 10 can be used, emitting a visible light spectrum toward the beam splitter 30, and the beam splitter 30 directs at least a portion of the emitted visible light spectrum toward the illumination projection unit 40, which then controls the output of a visible light illumination mode. In use, the visible light illumination unit 10 and the fluorescence illumination unit 20 can also operate. The fluorescence illumination unit 20 projects a fluorescence spectrum toward the spectrometer 30, while the visible light illumination unit 10 projects a visible light spectrum toward the spectrometer 30. The spectrometer 30 then uses at least a portion of the fluorescence spectrum and at least a portion of the visible light spectrum to form a composite spectrum, which is then projected toward the illumination projection unit 40. The illumination projection unit 40 then controls the output of the fluorescence illumination mode. Therefore, the spectrometer 30 enables the controllable synthesis of visible light and fluorescence spectra. Visible light can be used alone to meet routine observation needs, and fluorescence signals can be superimposed when needed, enhancing the flexibility and adaptability of the illumination and making it suitable for various surgical scenarios (such as angiography).
[0021] The beam splitter 30 includes a beam splitter, which enables controllable synthesis and amplification of visible light and fluorescence spectra while reducing costs.
[0022] In a preferred embodiment of this invention, the visible light spectrum emitted by the visible light illumination unit 10 has an incident angle of 30°-60° relative to the beam splitter 30, and the reflectance R of the beam splitter 30 for the visible light spectrum is greater than 98%; the fluorescence spectrum emitted by the fluorescent illumination unit 20 has an incident angle of 30°-60° relative to the beam splitter 30, and the transmittance T of the beam splitter 30 for the fluorescence spectrum is greater than 98%. By using a reasonable incident angle (30°-60°) of the spectrum relative to the beam splitter 30, energy loss during spectral reflection or transmission can be reduced. High reflectance (>98%) ensures efficient utilization of visible light, and high transmittance (>98%) ensures sufficient fluorescence transmission, thereby improving overall illumination brightness and efficiency.
[0023] In a more preferred embodiment of the present invention, the visible light spectrum emitted by the visible light illumination unit 10 has an incident angle of 45° with respect to the beam splitter 30, and the fluorescence spectrum emitted by the fluorescence illumination unit 20 has an incident angle of 45° with respect to the beam splitter 30.
[0024] In this embodiment, the fluorescent illumination unit 20, the beam splitter 30, and the illumination projection unit 40 are arranged along the first direction A, and the visible light illumination unit 10 and the beam splitter 30 are arranged along the second direction B, which is perpendicular to the first direction A.
[0025] The fluorescent illumination unit 20 includes a fluorescent light source 21 and a fluorescent filter 22; the fluorescent filter 22 is disposed between the fluorescent light source 21 and the beam splitter 30. By combining the fluorescent light source 21 and the fluorescent filter 22 into the fluorescent illumination unit 20, the fluorescent filter 22 can filter stray light in the fluorescent light source 21, thereby improving the purity and contrast of the fluorescent signal and avoiding interference from stray light on the surgical field of view.
[0026] As a preferred embodiment of the present invention, the fluorescent filter 22 is used to cut off the spectrum with a wavelength greater than 800 nm to prevent the spectrum with a wavelength greater than 800 nm from interfering with the surgical field of view. The transmittance T of the fluorescent filter 22 for the spectrum with a wavelength of 400-785 nm is greater than 95%.
[0027] Preferably, the fluorescence illumination unit 20 further includes a first illumination mirror group 23, which is disposed between the fluorescence filter 22 and the beam splitter 30. The first illumination mirror group 23 can optimize the fluorescence spectrum (e.g., collimation, focusing), improving the directionality and uniformity of the fluorescence spectrum.
[0028] The visible light illumination unit 10 includes a visible light source 11 and a second illumination mirror group 12, which is disposed between the visible light source 11 and the beam splitter 30. By employing the visible light illumination unit 10, which includes a visible light source 11 and a second illumination mirror group 12, the visible light spectrum can be optimized through the second illumination mirror group 12, thereby improving the brightness and uniformity of the visible light.
[0029] The first illumination mirror group 23 and the second illumination mirror group 12 can be any type of illumination mirror group available on the market, as long as the corresponding spectrum can be optimized.
[0030] The visible light source 11 and the fluorescent light source 21 can be any existing light source. However, in a preferred embodiment of this invention, the visible light source 11 is a visible light LED light source and the fluorescent light source 21 is a fluorescent LED light source, which can extend the service life, reduce the need for frequent replacement of light sources, and lower the operating cost.
[0031] The illumination projection unit 40 includes a reflective prism 41. By using a reflective prism 41 in the illumination projection unit 40, the reflective prism 41 can efficiently reflect and refract the spectrum, adjust the direction of the light path, and reduce light energy loss.
[0032] The illumination projection unit 40 also includes a third illumination mirror group 42, which is disposed between the reflective prism 41 and the beam splitter 30. By utilizing the third illumination mirror group 42, the spectrum can be further optimized, making the surgical field illumination brighter and more uniform, thus improving the overall quality of the surgical field of view.
[0033] The third illumination mirror group 42 can be any type of illumination mirror group available on the market, as long as the spectrum can be optimized.
[0034] Figure 3-4 This is another embodiment of the illumination module of the surgical microscope of this utility model, which is related to... Figure 1 The only difference lies in the incident angle between the visible light spectrum emitted by the visible light illumination unit 10 and the beam splitter 30: 30°-60°, and the transmittance T of the beam splitter 30 for the visible light spectrum > 98%. Similarly, the incident angle between the fluorescent spectrum emitted by the fluorescent illumination unit 20 and the beam splitter 30 is 30°-60°, and the reflectance R of the beam splitter 30 for the fluorescent spectrum > 98%. The visible light illumination unit 10, beam splitter 30, and illumination projection unit 40 are arranged along a first direction, while the fluorescent illumination unit 20 and beam splitter 30 are arranged along a second direction perpendicular to the first direction. By using a reasonable incident angle (30°-60°) between the spectrum and the beam splitter 30, energy loss during spectral reflection or transmission can be reduced. High reflectance (>98%) ensures efficient utilization of fluorescence, and high transmittance (>98%) ensures sufficient transmission of visible light, thus improving overall illumination brightness and efficiency.
[0035] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. An illumination module for a surgical microscope, characterized in that: It includes a visible light illumination unit, a fluorescent illumination unit, a beam splitter, and an illumination projection unit; the beam splitter and the illumination projection unit are arranged sequentially; the visible light illumination unit is used to inject a visible light spectrum toward the beam splitter, and the fluorescent illumination unit is used to inject a fluorescent spectrum toward the beam splitter; the beam splitter is used to direct at least a portion of the spectrum injected toward it toward the illumination projection unit.
2. The illumination module of the surgical microscope as described in claim 1, characterized in that: When a visible light illumination unit irradiates a visible light spectrum toward a beam splitter, the beam splitter is used to direct at least a portion of the visible light spectrum irradiated toward it toward the illumination projection unit; when a fluorescent illumination unit irradiates a fluorescent spectrum toward the beam splitter and a visible light illumination unit irradiates a visible light spectrum toward the beam splitter, the beam splitter is used to cause at least a portion of the fluorescent spectrum irradiated toward it and at least a portion of the visible light spectrum irradiated toward it to form a composite spectrum directed toward the illumination projection unit.
3. The illumination module of the surgical microscope as described in claim 1, characterized in that: The beam-splitting element includes a dichroic beam splitter.
4. The illumination module of the surgical microscope as described in claim 3, characterized in that: The visible light spectrum emitted by the visible light illumination unit has an incident angle of 30°-60° relative to the beam splitter, and the reflectance R of the beam splitter for the visible light spectrum is greater than 98%; the fluorescence spectrum emitted by the fluorescent illumination unit has an incident angle of 30°-60° relative to the beam splitter, and the transmittance T of the beam splitter for the fluorescence spectrum is greater than 98%.
5. The illumination module of the surgical microscope as described in claim 3, characterized in that: The visible light spectrum emitted by the visible light illumination unit has an incident angle of 30°-60° relative to the beam splitter, and the transmittance T of the beam splitter for the visible light spectrum is greater than 98%; the fluorescence spectrum emitted by the fluorescence illumination unit has an incident angle of 30°-60° relative to the beam splitter, and the reflectance R of the beam splitter for the fluorescence spectrum is greater than 98%.
6. The illumination module of the surgical microscope as described in claim 1, characterized in that: The fluorescent illumination unit includes a fluorescent light source and a fluorescent filter; the fluorescent filter is disposed between the fluorescent light source and the beam splitter.
7. The illumination module of the surgical microscope as described in claim 6, characterized in that: The fluorescent illumination unit further includes a first illumination mirror group, which is disposed between the fluorescent filter and the beam splitter.
8. The illumination module of the surgical microscope as described in claim 1, characterized in that: The visible light illumination unit includes a visible light source and a second illumination mirror group, the second illumination mirror group being disposed between the visible light source and the beam splitter.
9. The illumination module of the surgical microscope as described in claim 1, characterized in that: The illumination projection unit includes a reflective prism.
10. The illumination module of the surgical microscope as described in claim 9, characterized in that: The illumination projection unit also includes a third illumination mirror group, which is disposed between the reflective prism and the beam splitter.