Surgical shadowless lamp measuring system

Abstract

The utility model provides an operating shadowless lamp measuring system, which comprises a camera obscura and a data transceiving control unit, a sampling port is arranged on the camera obscura, and optical radiation emitted by a measured object enters the camera obscura through the sampling port; the camera obscura comprises a diffusion white board, an imaging measurement device and an optical detector used for measuring direct light or reflected light of a measured object, and the imaging measurement device is aligned with the diffusion white board to obtain a light spot image on the diffusion white board. The combination of the diffusion whiteboard and the imaging measurement device is adopted, light spots on the diffusion whiteboard are analyzed, the cosine reflection characteristic of the diffusion whiteboard is utilized, the brightness of the diffusion whiteboard is in direct proportion to the illumination irradiated on the diffusion whiteboard, precise analysis is carried out on the illumination, and the device has the advantages of being high in speed and small in illumination measurement step pitch. Aiming at the problem that an absolute value measured by an imaging measurement device may have deviation, an optical detector is used for directly measuring direct light of a measured object or reflected light irradiated on a diffusion white board so as to obtain an accurate absolute value.

Description

Technical Field

[0001] The utility model relates to the field of photoelectric testing, in particular to a surgical shadowless lamp measurement system. Background Art

[0002] The main parameters of the surgical shadowless lamp include central illumination, spot diameter, color temperature and color rendering index. The existing measurement method is generally to suspend the shadowless lamp to be measured in a dark room environment, use an illuminance meter or a spectral radiometer to measure the illumination of the center of the spot at a working distance, and scan and measure the illumination of each point on the spot by moving the illuminance meter, and draw an illumination distribution diagram based on this and calculate parameters such as the spot diameter. The biggest problem with the existing method is that the measurement speed is relatively slow, and in the scanning measurement process, the scanning step length is required to be relatively small, otherwise it is easy to cause errors. Patent technologies such as CN217276811U, CN21816773U, CN213274792U and CN113310665A disclose some improvement measures and methods, or use multiple illuminance meters, or use devices to make the shadowless lamp to be measured rise and fall freely, but none of them can completely solve the problem of slow spot diameter measurement speed, and the entire measurement has a low degree of automation, which is time-consuming and laborious. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a surgical shadowless lamp measurement system, aiming to solve the problems of slow measurement speed and inaccurate measurement in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides a surgical shadowless lamp measurement system, including a dark box and a data transceiver control unit, wherein a sampling port is provided on the dark box, and light radiation emitted by a measured object enters the dark box through the sampling port; the dark box includes a diffuse white board, an imaging measurement device, and an optical detector for measuring direct light or reflected light of the measured object, wherein the imaging measurement device is aimed at the diffuse white board to obtain a light spot image on the diffuse white board; the imaging measurement device and the optical detector are respectively communicatively connected to the data transceiver control unit.

[0005] It should be noted that the above imaging measurement device is composed of an array detector and an optical lens, and the light spot on the diffuse whiteboard is imaged onto the array detector for analysis. The array detector includes but is not limited to optical devices such as CCD and CMOS.

[0006] The utility model adopts a combination of a diffuse whiteboard and an imaging measurement device to analyze the light spot formed when the measured object is irradiated on the diffuse whiteboard. The cosine reflection characteristic of the diffuse whiteboard is used, and the brightness of the diffuse whiteboard is proportional to the illuminance irradiated thereon, so that the illuminance can be accurately analyzed, and it has the advantages of fast speed and small illuminance measurement step. In view of the problem that the absolute value measured by the imaging measurement device may have deviations, an optical detector can be used to directly measure the direct light of the measured object or its reflected light irradiated on the diffuse whiteboard to obtain an accurate absolute value.

[0007] As a technical solution, the above-mentioned diffuse whiteboard can cut into or out of the light path by folding. When cutting into the light path, the light emitted by the object to be measured is irradiated onto the diffuse whiteboard, and when cutting out of the light path, the diffuse whiteboard is close to the darkbox wall and does not block the light path; or the above-mentioned diffuse whiteboard is set on the third guide rail and can cut into or out of the light path by moving on the third guide rail.

[0008] As a further limitation and improvement of the above technical solution, the above dark box includes a first supporting platform, on which a first guide rail is arranged, the light receiving surface of the optical detector faces the sampling port to directly receive the light beam from the object to be measured, the optical detector is installed on the first guide rail, and can be moved on the first guide rail manually or electrically.

[0009] The above-mentioned diffuse whiteboard can be cut into or out of the light path. When the diffuse whiteboard is cut into the light path, the illumination distribution is obtained by analyzing the light spot formed by the object to be measured on the diffuse whiteboard; and when the diffuse whiteboard is cut out of the light path, an optical detector is used to directly receive the light beam emitted by the object to be measured to obtain the illumination value. Relatively speaking, the accuracy of direct illumination measurement is higher than the value measured by the diffuse whiteboard, so the absolute illumination value obtained by the optical detector can be used to correct the absolute value obtained by the imaging measurement device. In this technical solution, the imaging measurement device does not have to have a spectral responsivity that matches the light efficiency function of the human eye, that is, the value obtained by the imaging measurement device is not necessarily a photometric value. As long as the imaging measurement device has a uniform photometric response, the corresponding absolute illumination value can be transmitted through the measurement value of the optical detector. The imaging measurement device can be used to quickly and efficiently analyze the spot diameter of the measured surgical shadowless lamp, such as d10, d50, etc.

[0010] As a further limitation and improvement of the above technical solution, the above first guide rail is composed of three tracks in orthogonal directions. Through the three tracks in orthogonal directions, the optical detector installed thereon can move forward and backward, up and down, left and right to meet the measurement requirements of different areas.

[0011] As a further limitation and improvement of the above technical solution, the above optical detector is one or a combination of two or more of an illuminometer, a radiometer, and a spectroradiometer.

[0012] As a technical solution, the optical detector is a spectral radiance meter or a point-type radiance meter aimed at a specified point on a diffuse whiteboard. In this technical solution, by measuring the brightness or spectral radiance of a specified point on a diffuse whiteboard, the illumination, spectral power distribution and other parameters of the measured surgical shadowless lamp can be obtained due to the cosine characteristics and reflection spectrum uniformity of the diffuse whiteboard.

[0013] As a technical solution, the dark box includes a second support platform, on which a shield that can cut in or out of the light path is arranged. The shield is designed to simulate the light blocking of the medical staff's head during surgery. In order to achieve automated integrated measurement, the shield is set to a state that can be cut in and out, which can facilitate the measurement of different evaluation parameters.

[0014] As a further limitation and improvement to the above technical solution, a rotating device which can rotate around a vertical axis is arranged on the above second supporting platform, and the shield is installed on the rotating device.

[0015] As a technical solution, the dark box also includes a radiance image measuring device, and the optical lens of the radiance image measuring device is directly facing the sampling port. The radiance image measuring device directly faces the object to be measured, and measures the radiance image of the luminous surface of the object to be measured. The radiance image can be further combined with the measurement results of other optical detectors such as a spectroradiometer to analyze the retinal blue light hazard, retinal thermal hazard and other parameters of the surgical shadowless lamp to further evaluate the light radiation safety of the surgical shadowless lamp.

[0016] As a technical solution, the dark box also includes a human-machine interface, which includes but is not limited to a display screen, a keyboard, and a mouse.

[0017] As a technical solution, it also includes a sample stage and a lifting mechanism for carrying the object to be measured. The sample stage is connected to the lifting mechanism, and the object to be measured moves up and down under the drive of the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 and attached Figure 2 A schematic diagram of a surgical shadowless lamp measurement system provided in Embodiment 1 of the utility model;

[0019] Attached Figure 3 A schematic diagram of another surgical shadowless lamp measurement system provided in the second embodiment of the utility model;

[0020] In the figure, 1-dark box, 2-sampling port, 3-measured object, 4-diffuse white board, 5-imaging measurement device, 6-optical detector, 7-first supporting platform, 8-first guide rail, 9-second supporting platform, 10-shield, 11-radiance image measurement device, 12-human-machine interface, 13-sample stage, 14-lifting mechanism, 15-third guide rail. DETAILED DESCRIPTION Embodiment 1

[0021] This embodiment provides a surgical shadowless lamp measurement system. Figure 1 and Figure 2 As shown, it includes a dark box 1, a sample stage 13 and a data transceiver control unit, and a sampling port 2 and a human-machine interface 12 are provided on the dark box 1. The object 3 to be measured is installed on the sample stage 13, and the sample stage 13 is connected to the lifting mechanism 14. Driven by the lifting mechanism 14, the object 3 to be measured can move up and down so as to set the object 3 to be measured at a suitable position. The light beam emitted by the object 3 to be measured enters the dark box 1 through the sampling port 2. The human-machine interface 12 on the dark box 1 includes a display screen, a keyboard, and a mouse, which are located next to the dark box 1 to facilitate operation and monitoring of the measurement process.

[0022] In this embodiment, a diffuse whiteboard 4, an imaging measuring device 5, an optical detector 6, a first support platform 7, a first guide rail 8, a second support platform 9, a shield 10, and a radiance image measuring device 11 are arranged inside the dark box 1. The imaging measuring device 5, the radiance image measuring device 11, the lifting mechanism 14, and the optical detector 6 are respectively connected to the data transceiver control unit for communication. The diffuse whiteboard 4 can be cut into or out of the light path by folding. When the light of the object 3 is cut into the light path, it is irradiated onto the diffuse whiteboard 4. The imaging measuring device 5 is composed of an array detector and an optical lens, which is aimed at the diffuse whiteboard 4 to obtain the light spot image on the diffuse whiteboard 4, such as Figure 2 When the light path is cut out, the diffuse white board 4 is close to the side wall of the dark box 1 and does not block the light path, as shown in FIG. Figure 1As shown. A first guide rail 8 is provided on the first support platform 7. The light-receiving surface of the optical detector 6 faces the sampling port. When the diffuse whiteboard 4 cuts out the light path, the optical detector 6 directly receives the light beam from the measured object 3. The optical detector 6 in this embodiment is a combination of an illuminometer, a radiometer, and a spectroradiometer. They are arranged and installed on the first guide rail 8 composed of three orthogonal tracks, and can be moved forward and backward, up and down, left and right on the first guide rail 8 by electric means to move the designated optical detector 6 to a specific measurement position. The optical lens of the radiance image measuring device 11 faces the sampling port 2. When the diffuse whiteboard 4 cuts out the light path, the radiance image measuring device 11 faces the measured object 3 directly to measure the radiance image of the luminous surface of the measured object 3. In this embodiment, a shield 10 that can cut in or out of the light path is provided on the second support platform 9. Setting the shield 10 to a state that can be cut in and out can facilitate the measurement of different evaluation parameters. A rotating device that can rotate around a vertical axis is also provided on the second support platform 9, and the shield 10 is installed on the rotating device.

[0023] In a specific measurement, the measured object 3 can be moved to a suitable height position by the lifting mechanism 14, for example, a position with a vertical distance of 1m from the diffuse whiteboard in the open state or a position with a vertical distance of 1m from the photosensitive area of ​​the optical detector 6. Figure 1 As shown, when the diffuse whiteboard 4 cuts out the light path and the vertical distance between the measured object 3 and the optical detector 6 is 1m, the light beam emitted by the measured object 3 enters the dark box 1 through the sampling port 2. The optical detector 6 is moved to align it with the center of the measured object 3. The optical detector 6 directly receives the light beam from the measured object 3 and measures the central illumination, irradiance and spectral radiation power of the measured object 3. The optical lens of the radiance image measuring device 11 faces the luminous surface of the measured object 3 to measure the radiance image of the luminous surface of the measured object 3, and then analyzes the parameters such as the retinal blue light hazard and retinal thermal hazard of the measured object, which can further evaluate the light radiation safety of the surgical shadowless lamp. Figure 2 As shown, when the diffuse whiteboard 4 is in the open state, the vertical distance between the measured object 3 and the diffuse whiteboard 4 is adjusted to 1m, the light beam emitted by the measured object 3 is irradiated on the diffuse whiteboard 4, and the imaging measurement device 5 is aimed at the diffuse whiteboard 4 to obtain the light spot image on the diffuse whiteboard 4, and the light spot diameter, color temperature (at the center light spot), color rendering index and other parameters can be analyzed. In this embodiment, according to the cosine reflection characteristics of the diffuse whiteboard, the brightness of the diffuse whiteboard is proportional to the illuminance irradiated thereon, so the illuminance can be accurately analyzed, with the advantages of fast speed and small illuminance measurement step; and in view of the problem that the absolute value measured by the imaging measurement device may have deviations, an optical detector can be used to directly measure the direct light of the measured object to obtain an accurate absolute value, and then calibrate the absolute value obtained by the imaging measurement device. Embodiment 2

[0024] This embodiment provides a surgical shadowless lamp measurement system. Figure 3 As shown, it includes a dark box 1, a sample stage 13 and a data transceiver control unit, and a sampling port 2 and a human-machine interface 12 are provided on the dark box. The object 3 to be measured is installed on the sample stage 13, and the sample stage 13 is connected to a lifting mechanism 14. The object 3 to be measured can be moved up and down under the drive of the lifting mechanism 14, so as to set the object 3 to be measured at a suitable position. The light beam emitted by the object 3 to be measured enters the dark box 1 through the sampling port 2. In this embodiment, the human-machine interface 12 includes but is not limited to a display screen, a keyboard, and a mouse.

[0025] In this embodiment, a diffuse whiteboard 4, an imaging measurement device 5, and an optical detector 6 are arranged inside the dark box 1. The imaging measurement device 5, the lifting mechanism 14, and the optical detector 6 are respectively connected to the data transceiver control unit for communication. The light of the object 3 to be measured is irradiated onto the diffuse whiteboard 4, and the imaging measurement device 5 and the optical detector 6 are respectively aimed at the light spot image on the diffuse whiteboard 4. The diffuse whiteboard 4 is set on the third guide rail 15, and the light path is cut in or out by moving on the third guide rail 15. In this embodiment, the imaging measurement device 5 is composed of an array detector and an optical lens, and the light spot on the diffuse whiteboard 4 is imaged onto the array detector for analysis. The optical detector 6 is a spectral radiance meter aimed at a specified point on the diffuse whiteboard 4, which uses the spectral neutrality characteristics of the diffuse whiteboard to measure the spectral power distribution of the object 3 to be measured, and then analyzes its chromaticity parameters.

[0026] In a specific measurement, the object 3 to be measured can be moved to a suitable height position by the lifting mechanism 14, for example, a position with a vertical distance of 1m from the diffuse whiteboard. The light beam emitted by the object 3 to be measured is irradiated onto the diffuse whiteboard 4, and the imaging measurement device 5 is aimed at the diffuse whiteboard 4 to obtain the light spot image on the diffuse whiteboard 4, and the parameters such as the light spot diameter, color temperature (at the center light spot), and color rendering index can be analyzed; the optical detector 6 is aimed at the light spot, and the spectral power distribution is analyzed by measuring on the diffuse whiteboard, and the chromaticity parameters and radiance parameters are calculated. In this embodiment, according to the cosine reflection characteristics of the diffuse whiteboard, the brightness of the diffuse whiteboard 4 is proportional to the illuminance irradiated thereon, so the illuminance can be accurately analyzed, and it has the advantages of fast speed and small illuminance measurement step. This embodiment is particularly suitable for rapid measurement and evaluation of shadowless lamps on production lines.

[0027] The specific implementation methods of the present invention are described above in conjunction with the accompanying drawings, but those skilled in the art should understand that the above embodiments are only for illustration and are not intended to limit the scope of the present invention. Those skilled in the art should understand that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of protection of the present invention is defined by the appended claims.

Claims

1. A surgical shadowless lamp measurement system, characterized in that: The invention comprises a dark box (1) and a data transceiver control unit, wherein the dark box (1) is provided with a sampling port (2), and light radiation emitted by a measured object (3) enters the dark box (1) through the sampling port (2); the dark box (1) comprises a diffuse white board (4), an imaging measurement device (5), and an optical detector (6) for measuring direct light or reflected light of the measured object (3); the imaging measurement device (5) is aimed at the diffuse white board (4) to obtain a light spot image on the diffuse white board (4); the imaging measurement device (5) and the optical detector (6) are respectively connected to the data transceiver control unit for communication.

2. A surgical shadowless lamp measurement system as claimed in claim 1, characterized in that: The diffuse white board (4) cuts into or out of the light path by folding, and when cutting into the light path, the light emitted by the object to be measured (3) is irradiated onto the diffuse white board (4), and when cutting out of the light path, the diffuse white board (4) is close to the wall of the dark box and does not block the light path; or the diffuse white board (4) is arranged on the third guide rail (15) and cuts into or out of the light path by moving on the third guide rail (15).

3. A surgical shadowless lamp measurement system as claimed in claim 2, characterized in that: The dark box (1) comprises a first support platform (7), on which a first guide rail (8) is arranged; the light receiving surface of the optical detector (6) faces the sampling port (2) to directly receive a light beam from the object to be measured (3); the optical detector (6) is mounted on the first guide rail (8) and can be moved on the first guide rail (8) manually or electrically.

4. A surgical shadowless lamp measurement system as claimed in claim 3, characterized in that: The first guide rail (8) consists of three tracks in orthogonal directions.

5. A surgical shadowless lamp measurement system as claimed in claim 3 or 4, characterized in that: The optical detector (6) is one of an illuminometer, a radiometer, and a spectroradiometer, or a combination of two or more thereof.

6. A surgical shadowless lamp measurement system as claimed in claim 1 or 2, characterized in that: The optical detector (6) is a spectral radiance meter or a point-aiming luminance meter aimed at a designated point on the diffuse whiteboard (4).

7. The surgical shadowless lamp measurement system according to claim 1, characterized in that: The dark box (1) comprises a second supporting platform (9), on which a shielding plate (10) capable of cutting in or out of the light path is arranged.

8. A surgical shadowless lamp measurement system as claimed in claim 7, characterized in that: It also includes that a rotating device which can rotate around a vertical axis is arranged on the second supporting platform (9), and the shielding plate (10) is installed on the rotating device.

9. The surgical shadowless lamp measurement system according to claim 2, characterized in that: The dark box (1) comprises a radiance image measuring device (11), and the optical lens of the radiance image measuring device (11) faces the sampling port (2).

10. The surgical shadowless lamp measurement system according to claim 1, characterized in that: It comprises a sample stage (13) for carrying a measured object (3) and a lifting mechanism (14); the sample stage (13) is connected to the lifting mechanism (14), and the measured object (3) is moved up and down under the drive of the lifting mechanism (14).

Images