A measurement device for integrating sphere light source alignment based on center aperture positioning of light spots
By setting a target and aperture between the integrating sphere and the cold light source, and combining the X-module and Y-module adjustment base, the problem of detection error caused by inaccurate light source alignment is solved, achieving efficient and accurate light source alignment and detection results, which is suitable for cold light sources in medical endoscopes.
Patent Information
- Application Number
- CN202521934541.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2026-06-16
- Estimated Expiration
- 2035-09-09
Smart Images
Figure CN224365635U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of measuring device technology, and more specifically, it relates to a measuring device for aligning an integrating sphere light source based on a central aperture positioning spot. Background Technology
[0002] A cold light source is a light source generated by excitation through chemical energy, electrical energy, or biological energy. In daily life, optical cables are important communication tools. Optical cables contain optical fibers, and the core of the optical fiber is usually made of glass. The core is surrounded by a glass cladding with a lower refractive index than the core. This structural design allows the light signal entering the core to undergo total internal reflection at the interface between the core and the cladding, thus propagating forward in the core. Measuring the uniformity of light illumination in optical fibers is a key step in inspecting the quality of optical cable products.
[0003] In the testing of cold light sources for medical endoscopes, light intensity adjustment is only a basic requirement. Currently, testing is usually performed directly. More importantly, it is necessary to ensure the coaxiality of the light source outlet and the integrating sphere inlet. Otherwise, it will lead to colorimetric measurement errors, which will affect the accuracy of the test results. Utility Model Content
[0004] This invention provides a measuring device for aligning an integrating sphere light source based on a central aperture positioning spot, solving the technical problem in related technologies where misalignment during detection reduces detection accuracy in measuring devices for aligning an integrating sphere light source based on a central aperture positioning spot.
[0005] This utility model provides a measuring device for aligning an integrating sphere light source based on a central aperture positioning spot, including an integrating sphere and a cold light source, wherein the integrating sphere and the cold light source are adjustable.
[0006] The integrating sphere has targets at the light-transmitting part and the cold light source, and an aperture is provided between the two targets;
[0007] When the cold light source emits light, it passes through a target and an aperture. The coaxiality of the cold light source's light emission point, aperture, and integrating sphere aperture is determined by the shape change on another target.
[0008] When coaxial, a single fiber optic cable is installed between the integrating sphere and the cold light source for detection.
[0009] As a further optimization of this utility model, the cold light source is provided with a light-emitting hole.
[0010] As a further optimization of this utility model, a target A is provided at the light-emitting aperture.
[0011] As a further optimization of this utility model, the integrating sphere is provided with a light-transmitting hole.
[0012] As a further optimization of this utility model, a target B is detachably connected to the light-transmitting hole.
[0013] As a further optimization of this utility model, both target B and target A are cross-shaped transparent targets.
[0014] As a further optimization of this utility model, a bolt for pressing the target B is threadedly connected to the light-transmitting hole.
[0015] As a further optimization of this utility model, the bottom of the cold light source is provided with an adjustment base.
[0016] As a further optimization of this utility model, the adjustment base is composed of an X module and a Y module.
[0017] The beneficial effects of this utility model are as follows:
[0018] 1. The measuring device for aligning an integrating sphere light source based on a central aperture positioning spot, as described in this utility model, constructs a visualized coaxial judgment system through the core design of "dual targets + central aperture". The light emitted by the cold light source is marked by target A at the light outlet, then filtered by the aperture to remove stray light, and finally projected onto the cross-shaped transparent target B at the light transmission hole of the integrating sphere. The operator can intuitively judge the coaxiality of the light outlet of the cold light source, the aperture, and the light transmission hole of the integrating sphere by observing the overlap and regularity of the cross-shaped light spots on target B. When coaxial, the cross-shaped light spots are completely overlapped and located in the center; when not coaxial, misalignment or deformation occurs. This fundamentally solves the problem of "color measurement error caused by misalignment during direct detection" in the prior art, providing a precise optical path foundation for subsequent single-fiber detection, significantly reducing the deviation of detection results, and is especially suitable for scenarios with extremely high detection accuracy requirements, such as cold light sources for medical endoscopes.
[0019] 2. The measuring device for aligning an integrating sphere light source based on a central aperture positioning spot, as described in this utility model, has an adjustment base at the bottom of the cold light source consisting of an X module and a Y module, which can independently fine-tune the cold light source in the horizontal and vertical directions respectively. The operator can quickly adjust the cold light source to the optimal alignment position based on the light spot feedback from the target B. Compared with the traditional overall adjustment method, the operation is more precise and efficient. On the other hand, the target B is detachably connected to the light transmission hole of the integrating sphere by bolts, and the target A can also be removed from the light output hole of the cold light source. After alignment, the target and aperture can be removed to connect to a single optical fiber for testing. This not only does not affect the subsequent testing process, but also adapts to different specifications of cold light sources, integrating spheres and optical fibers, improving the versatility and flexibility of the device. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of a measuring device for aligning an integrating sphere light source based on a central aperture positioning spot, as proposed in this utility model.
[0021] In the picture:
[0022] 1. Integrating ball;
[0023] 2. Target B;
[0024] 3. Light-transmitting aperture;
[0025] 4. Bolts;
[0026] 5. Aperture;
[0027] 6. Target A;
[0028] 7. Light hole;
[0029] 8. Cold light source;
[0030] 9. Adjust the base. Detailed Implementation
[0031] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.
[0032] like Figure 1 As shown, a measuring device for aligning an integrating sphere light source based on a central aperture positioning spot according to an embodiment of the present invention includes an integrating sphere 1 and a cold light source 8, wherein the integrating sphere 1 and the cold light source 8 are adjustable.
[0033] Targets are set at the light-transmitting part of the integrating sphere 1 and the cold light source 8, and an aperture 5 is set between the two targets;
[0034] The cold light source 8 is provided with a light emission aperture 7;
[0035] When the cold light source 8 emits light, it passes through a target and an aperture 5. The shape change on another target is used to determine the coaxiality of the light emission point of the cold light source 8, the aperture 5, and the light passage of the integrating sphere 1.
[0036] When coaxial, a single fiber optic sensor is installed between the integrating sphere 1 and the cold light source 8.
[0037] The integrating sphere 1 and the cold light source 8 are adjustable, allowing for flexible changes in their relative positions. This provides a basis for subsequent coaxial alignment. After the cold light source 8 emits light, the light first passes through the target at its location. The target provides initial guidance for the light beam. Subsequently, the light beam is directed towards the aperture 5 located between the two targets. The aperture 5 filters out the light beam propagating along its central axis and blocks stray light that deviates from the axis. The light beam filtered by the aperture 5 is finally projected onto another target at the light-passing port of the integrating sphere 1. If the light-emitting point of the cold light source 8, the aperture 5, and the light-passing port of the integrating sphere 1 are not coaxial, the light spot projected onto the target will exhibit shape distortion (such as deviating from the center). If the three are coaxial, the light spot shape is regular, the light spot shrinks uniformly, and it is located at the center of the target.
[0038] By visually observing the changes in the shape of the target spot, the coaxiality of the three components can be quickly and accurately determined, avoiding colorimetric measurement errors caused by misalignment during subsequent testing, thus laying the foundation for improving the accuracy of the test results.
[0039] In an optional embodiment, a target A6 is provided at the light-emitting aperture 7.
[0040] The target A6 is detachably installed at the light outlet 7 of the cold light source 8 (it can be detached and installed by screws). After the light emitted from the cold light source 8 is emitted from the light outlet 7, it will pass directly through the target A6 and then propagate to the aperture 5. The target A6 adds a positioning mark to the beam, so that the light spot projected onto another target can carry the initial positioning information, making it easier for the staff to judge whether the beam propagation path has deviated and reducing the alignment judgment error caused by the unmarked beam.
[0041] The integrating sphere 1 is provided with a light-transmitting hole 3, and a target B2 is detachably connected to the light-transmitting hole 3.
[0042] The light-passing aperture 3 is set on the integrating sphere 1, and its position corresponds to the light-exiting aperture 7 and the aperture 5 of the cold light source 8. The light beam after passing through the aperture 5 can enter the interior of the integrating sphere 1 through the light-passing aperture 3. The light-passing aperture 3 provides a unique and fixed entrance for the external light beam to enter the integrating sphere 1, ensuring that the light beam can enter the integrating sphere 1 stably and accurately, avoiding the inaccurate incident of the light beam due to the lack of a fixed entrance. At the same time, it provides a reasonable position for installing the target at the light-passing aperture of the integrating sphere 1, ensuring the smoothness of the alignment process and subsequent detection process.
[0043] The target B2 is detachably connected to the light-transmitting hole 3 of the integrating sphere 1. The light emitted by the cold light source 8 passes through the target A6 and the aperture 5 and is directly projected onto the target B2. The operator can judge the coaxiality by observing the light spot on the target B2. After alignment is completed, the target B2 can be removed from the light-transmitting hole 3. The detachable design not only meets the need to observe the light spot through the target B2 during the alignment stage, but also allows the target B2, target A6 and aperture 5 to be removed after alignment for light detection, avoiding obstruction of the light beam into the integrating sphere 1, without affecting subsequent detection, and improving the flexibility of the device.
[0044] Specifically, both target B2 and target A6 are cross-shaped transparent targets.
[0045] Both targets A6 and B2 adopt a cross-shaped transparent structure. When the light from the cold light source 8 passes through target A6, it carries the cross mark. After being filtered by the aperture 5, the beam is projected onto target B2. If the light outlet 7 of the cold light source 8, the aperture 5, the integrating sphere 1, and the light passage 3 are coaxial, the cross mark on target A6 will form an overlapping cross-shaped light spot or a proportionally scaled light spot on target B2. If they are not coaxial, the cross-shaped light spot will be off-center and misaligned. Compared with ordinary targets, the cross mark is easier to observe alignment details and can accurately capture the difference between coaxiality and non-coaxiality, further reducing alignment errors and allowing staff to quickly judge and adjust, thus improving the accuracy and efficiency of coaxiality judgment.
[0046] Specifically, bolts 4 for pressing the target B2 are threaded into the light-transmitting holes 3.
[0047] Bolt 4 is connected to the light-transmitting hole 3 of integrating sphere 1 by a threaded engagement. When target B2 is installed at the light-transmitting hole 3, rotating bolt 4 will cause bolt 4 to move toward target B2 until it tightly presses against target B2, fixing target B2 at the light-transmitting hole 3 and preventing displacement. The pressing action of bolt 4 ensures that target B2 is stable in position during alignment. At the same time, the threaded connection facilitates the installation and removal of bolt 4 without affecting the installation and disassembly of target B2.
[0048] In order to adjust the positions of the cold light source 8 and the integrating sphere 1 to adapt to the detection of optical fibers of different lengths, the bottom of the cold light source 8 is provided with an adjustment base 9, which consists of an X module and a Y module.
[0049] The X module of the adjustment base 9 is responsible for moving the cold light source 8 in the X-axis direction (horizontal), and the Y module is responsible for moving the cold light source 8 in the Y-axis direction (vertical). By independently controlling the movement distance and direction of the X and Y modules, the precise position fine-tuning of the cold light source 8 in the horizontal plane can be achieved. The light emission aperture 7 and the target A6 on the cold light source 8 will move synchronously with the adjustment of the X and Y modules, thereby precisely adjusting the coaxiality of the light emission point of the cold light source 8 with the aperture 5 and the light transmission aperture 3 of the integrating sphere 1. The independent adjustment of the X and Y modules realizes the precise fine-tuning of the position of the cold light source 8. Compared with the overall adjustment, it is easier to find the best alignment position. It can efficiently and accurately make the light emission point of the cold light source 8, the aperture 5, and the light transmission aperture of the integrating sphere 1 coaxial, improving alignment efficiency and accuracy.
[0050] The embodiments of this utility model have been described above, but these embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of these embodiments, all of which are within the protection scope of these embodiments.
Claims
1. A measuring device for aligning an integrating sphere light source based on a central aperture positioning spot, comprising an integrating sphere (1) and a cold light source (8), characterized in that: The integrating sphere (1) and the cold light source (8) can be adjusted; The integrating sphere (1) has a target at the light-transmitting part and the cold light source (8) respectively, and an aperture (5) is provided between the two targets. When the cold light source (8) emits light, it passes through a target and an aperture (5). The shape change on another target is used to determine the coaxiality of the light emission point of the cold light source (8), the aperture (5), and the light passage of the integrating sphere (1). When coaxial, a single fiber optic detector is installed between the integrating sphere (1) and the cold light source (8).
2. The measuring device for aligning an integrating sphere light source based on a central aperture positioning spot according to claim 1, characterized in that: The cold light source (8) is provided with a light-emitting hole (7).
3. The measuring device for aligning an integrating sphere light source based on a central aperture positioning spot according to claim 2, characterized in that: A target A (6) is provided at the light-emitting aperture (7).
4. The measuring device for aligning an integrating sphere light source based on a central aperture positioning spot according to claim 3, characterized in that: The integrating sphere (1) is provided with a light-transmitting hole (3).
5. The measuring device for aligning an integrating sphere light source based on a central aperture positioning spot according to claim 4, characterized in that: A target B (2) is detachably connected to the light-transmitting hole (3).
6. The measuring device for aligning an integrating sphere light source based on a central aperture positioning spot according to claim 5, characterized in that: Both target B (2) and target A (6) are cross-shaped transparent targets.
7. The measuring device for aligning an integrating sphere light source based on a central aperture positioning spot according to claim 5, characterized in that: The light-transmitting hole (3) is threaded with a bolt (4) that presses the target B (2).
8. The measuring device for aligning an integrating sphere light source based on a central aperture positioning spot according to claim 7, characterized in that: The bottom of the cold light source (8) is provided with an adjustment base (9).
9. The measuring device for aligning an integrating sphere light source based on a central aperture positioning spot according to claim 8, characterized in that: The adjustment base (9) consists of an X module and a Y module.