CN108366252B - Detection equipment for testing definition of camera - Google Patents
Detection equipment for testing definition of camera Download PDFInfo
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- CN108366252B CN108366252B CN201810023083.4A CN201810023083A CN108366252B CN 108366252 B CN108366252 B CN 108366252B CN 201810023083 A CN201810023083 A CN 201810023083A CN 108366252 B CN108366252 B CN 108366252B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B43/00—Testing correct operation of photographic apparatus or parts thereof
Abstract
The invention relates to a detection device for testing definition of a camera. The detection device for testing the definition of the camera comprises a camera detection module, wherein the camera detection module comprises: a light source part which is formed in a box shape with an opening at the bottom and is provided with a plurality of light sources, and the plurality of light sources can be controlled independently; a light diffusion section which is attached to the inside of the light source section and has a spherical shape with an open bottom; and a light source control unit for controlling the light sources according to the set light characteristics.
Description
Technical Field
The present invention relates to a camera detection device, and more particularly, to a camera sharpness measurement detection device capable of arbitrarily and precisely changing optical characteristics, and particularly, capable of smoothly performing a focusing operation of a camera module having an ultra-wide-angle lens mounted thereon.
Background
The camera forms a still image by exposing the surface of the film inside the camera with light incident on the lens or by providing a signal to the image sensor. The camera will not be able to take a picture without light and therefore light is an absolutely important input signal for the camera.
If a camera is used to photograph white paper, the shape and color of the paper cannot be distinguished at all in dark environment without light. This is because there is no output signal if there is no input signal.
In practice, it is often the case that the image is taken in a very dark environment in the surrounding environment, and therefore, it is necessary to evaluate how much light the image can be presented in order to evaluate the sharpness.
In addition, the inherent Color of a light ray reacts with the Color of an object to make a fixed correlated Color, for example, a Color Temperature (Color Temperature) of the light ray, which makes red look redder.
Human vision can automatically correspond to the change of the color temperature, and the same color can be perceived even if the human vision is observed by light sources with different color temperatures, but because the human vision is faithfully expressed by a camera or an image sensor without filtering, a photo taken under an incandescent lamp is red, and a photo taken at dawn is blue.
Generally, a red-forming light source has a low color temperature, a blue-forming light ray has a high color temperature which can be expressed in numerical values, an incandescent lamp has a color temperature of about 3,000K (K is an abbreviation for the color temperature in the unit Kalvin), a light source that is bluish at dawn has a color temperature of about 10,000K, a higher value is blue on the basis of 5000K, and a lower value is red.
Therefore, for evaluation of the sharpness of a camera that can be used in various environments, manufacturers of image sensors of cameras need artificial light sources that control color temperature (ColorTemperature), which is a physical value of light source color, to embody various color temperatures.
Further, the camera is required to adjust the intensity (Gain) of the camera or the image sensor or adjust the signal value of the reference White (White Point) or the reference Black (Black Point) so that the ratio of RGB signals becomes the same with reference to a standard object such as a White object or a designated color object irradiated with light having various color temperature characteristics, and to inspect the visibility of the camera manufactured according to such illuminance or color temperature.
An integrating sphere, which is commonly used in the test of such a camera, is designed to uniformly reflect and disperse light and emit the same amount of light from an opening portion of the integrating sphere, and functions to transmit a small amount of light to the opening portion without loss, thereby achieving the maximum effect with the minimum energy under a definition evaluation environment requiring high brightness.
At present, an integrating sphere with a darkroom is applied to evaluate the definition of a camera, 15 areas are required to be formed at least for an illumination surface ensuring uniform brightness, a box-shaped light source with an overlarge volume is used for illuminating on the left and the right sides to embody the definition evaluation environment for ensuring the uniform brightness of a light source illumination surface, and power of more than 3000W is required for maintaining the maximum brightness of 1000Lux while maintaining the uniformity of the illumination surface.
Further, as a technique for focusing operation or image detection of a camera module having a super-wide-angle lens (fish-eye lens) mounted thereon, there are a method in which a plurality of general surface light sources are formed at a predetermined angle, and a method in which light emitted from a general surface light source is uniformly diffused by a reflecting material inside an integrating sphere using the integrating sphere.
Among them, the method using a plurality of general surface light sources has a problem that the color temperature cannot be changed arbitrarily, and a problem that not only the distance from the camera to the surface light source cannot be uniformly reflected but also a plurality of light sources are required to be used in order to detect a camera of 180 degrees or more.
However, it is difficult to arbitrarily change the color temperature by using the method of detecting with the integrating sphere having the conventional configuration, and it is necessary to increase the volume of the integrating sphere for uniformly reflecting light more inside the integrating sphere, and particularly, it is necessary to form a larger integrating sphere when the camera module is internally loaded because the reflection and uniformity of light are affected. Therefore, there is a problem in that the production line for mass-producing cameras is narrow in space and thus has a low yield.
Therefore, it is necessary to develop a detection apparatus having a completely new configuration which is compact and can be applied to various color temperatures and illumination intensities.
Disclosure of Invention
Technical problem to be solved
The present invention has been made to solve the above-described problems occurring in the prior art, and the present invention has the following objects.
First, an object of the present invention is to provide a camera sharpness testing apparatus that can perform a focusing operation or an image inspection of a camera module equipped with an ultra-wide-angle lens (fisheye lens) having a photographing angle exceeding 180 degrees.
Second, an object of the present invention is to provide a camera sharpness testing apparatus that can accurately and easily adjust a color temperature and an illuminance in the apparatus.
Third, the present invention is directed to provide a camera sharpness testing apparatus which is constructed in a compact design and thus can be efficiently installed and operated, and can improve space utilization.
Fourth, an object of the present invention is to provide a camera sharpness testing inspection apparatus which is easy to manufacture.
Fifth, the present invention is directed to provide a camera sharpness testing detection apparatus in which a light measurement sensor can be positioned at the center of a light diffusion portion.
The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood from the following description by a person of ordinary skill in the art to which the present invention pertains.
Means for solving the problems
In order to achieve the above object, a detection apparatus for a camera sharpness test according to an embodiment of the present invention includes a camera detection module, the camera detection module including: a light source unit, a light diffusion unit, and a light source control unit.
The light source part forms a box shape with an opening at the bottom, and is provided with a plurality of light sources which can be controlled independently.
The light diffusion section is attached to the inside of the light source section and forms a sphere with an open bottom.
And a light source control unit for controlling the light sources according to the set light characteristics.
The control units control the light sources so that the light characteristics of the light reaching the light diffusion unit are uniform.
The light diffusion portion is formed so that, in a cross section from the center to the periphery, an angle of 240 degrees is formed between both ends of the opening portion of the bottom portion.
Each surface of the light source unit is formed by linking one or more printed circuit boards for mounting the plurality of light sources.
Further, the inspection apparatus of the present embodiment further includes an external housing which forms a box shape with an open bottom and in which the light source section is disposed.
The light source unit further includes a fixing plate for fixing the light source unit, the light diffusion unit, and the external housing.
Further, the present invention provides an optical measurement module including: a light measurement sensor located inside the light diffusion portion and measuring a light characteristic of the light irradiated through an inner surface of the light diffusion portion; and a measurement control unit that compares the light characteristics input by the light measurement sensor with the actual level of the light source and calculates a correction value.
The light measurement module includes a moving unit for adjusting a height and a position of the light measurement sensor so that the light measurement sensor is positioned at a center of the light diffusion unit.
The light measurement module includes a rotating unit that rotates the light measurement sensor about a rotation axis in a horizontal direction or a vertical direction, and is capable of measuring light rays irradiated from all positions of the light diffusion unit.
The measurement control unit outputs the correction value to the light source control unit, and the light source control unit controls the light sources based on the values input by the measurement control unit so that the light characteristics of the light reaching all the positions of the light diffusion unit are uniform.
The light source control unit compares a set value with a value input by the colorimetric illuminometer to check whether or not the set value matches, and then controls the light source to match the both.
Advantageous effects
The effects of the present invention configured as above will be described below.
First, the detecting apparatus for camera sharpness testing according to an embodiment of the present invention has a spherical light diffusing part, and thus can perform a focusing operation or image detection of a camera module equipped with an ultra-wide-angle lens (fisheye lens) having a photographing angle exceeding 180 degrees.
Second, the detecting apparatus for camera sharpness testing according to an embodiment of the present invention controls the respective light sources with reference to the value inputted through the light detecting sensor to adjust the light reaching the surface of the light diffusing part to have uniform characteristics so that the light characteristics in the detecting apparatus can be accurately and easily adjusted.
Third, the method of forming a predetermined angle between the detecting device for camera sharpness test and the plurality of surface light sources and the method of using the integrating sphere according to an embodiment of the present invention can detect the camera even in a narrow space because the size of the detecting device is relatively small. Thus, the method is also suitable for a production line which needs to produce a large amount of products in a narrow space.
Fourth, according to the detecting apparatus for testing camera sharpness according to an embodiment of the present invention, since the light source portion is formed in a box shape, there is an advantage in that manufacturing is easy.
Fifth, according to the detecting apparatus for testing camera visibility of an embodiment of the present invention, the light detecting module can embody various color temperatures using only one light source using the light measuring sensor, and can detect light irradiated from all positions of the light diffusing portion by rotating the light measuring sensor in all directions at the center of the light diffusing portion. The light reaching the surface of the light-diffusing portion can exhibit uniform light characteristics because the light source is controlled by using it.
The effects of the present invention are not limited to the above-described effects, and other effects not mentioned can be clearly understood from the description of the scope of the present invention by those skilled in the art to which the present invention pertains.
Drawings
The following description is of the preferred embodiments of the present description only, and the abstract is better understood when read in conjunction with the accompanying drawings. The present invention is illustrated by way of example in the accompanying drawings. It should be understood, however, that the application is not limited to the precise arrangements and instrumentalities shown in the drawings.
Fig. 1 is an exploded perspective view of a camera inspection module of an inspection apparatus for camera sharpness testing according to an embodiment of the present invention.
Fig. 2 is a combination diagram of a camera inspection module of an inspection apparatus for camera sharpness testing according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view showing a light diffusing portion of a camera detection module of the detection apparatus for camera visibility test according to the embodiment of the present invention.
Fig. 4 is a diagram showing a light measuring module of the detection apparatus for camera sharpness testing according to the embodiment of the present invention.
Fig. 5 is a block diagram showing a connection relationship of the light source, the light measuring sensor, and the control unit of the detection apparatus for testing camera sharpness as in the embodiment of the present invention.
Fig. 6 is a view showing a colorimetric illuminometer mounted on the bottom of a camera detection module of a detection apparatus for camera sharpness testing according to an embodiment of the present invention.
Reference numerals
100: the camera detection module 110: external machine case
120: the light source section 122: printed circuit board
124: light source 126: light source control unit
130: light diffusion portion 140: operation part
150: fixing plate 152: opening part
200: the light measurement module 210: light measuring sensor
220: the moving section 230: rotating part
232: horizontal rotation motor 234: vertical rotary motor
240: measurement control unit 300: colorimetric illuminometer
Detailed Description
Embodiments of the present invention will be described in detail with reference to the accompanying drawings. The drawings are only for the purpose of facilitating the description of the present invention, and it should be apparent to those skilled in the art that the scope of the present invention should not be limited to the drawings.
In the description of the embodiments of the present invention, the same names and the same symbols are used for the components having the same functions, but the embodiments are actually completely different from the components of the prior art.
The terms used in the present description are used only for the description of the specific embodiments, and the present invention is not limited thereto. The singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In the present specification, the terms "including" or "having" are used to designate the presence of the features, numerals, stages, operations, components, parts or combinations thereof described in the specification, and should not be construed as to preclude the presence or addition of one or more other features, numerals, stages, operations, components, parts or combinations thereof.
The following describes a camera sharpness testing detection apparatus according to an embodiment of the present invention with reference to the drawings.
Fig. 1 is an exploded perspective view illustrating a camera detection module of a detection apparatus for camera visibility test according to an embodiment of the present invention, and fig. 2 is a combination view illustrating the camera detection module of the detection apparatus for camera visibility test according to an embodiment of the present invention.
As shown in fig. 1 and 2, the detection apparatus for camera sharpness testing according to an embodiment of the present invention includes a camera detection module 100, and the camera detection module 100 includes an external housing 110, a light source unit 120, a light diffusion unit 130, and a light source control unit 126.
The external case 110 is used to form the external appearance of the camera sharpness testing inspection apparatus of the present embodiment, and forms an internal space and a shape with an opening at the bottom. Also, the external case 110 may have a box shape formed of 5 surfaces except the bottom. Also, the inside of the external case 110 may be formed of a material blocking external light to form a dark room shape. The external housing 110 is provided with an operation unit 140 for setting the overall output level of the light source 124.
The light source 120 is mounted in the inner space of the outer housing 110, and has a box shape smaller than the outer housing 110, and the bottom of the light source 120 is opened. A plurality of light sources 124 are mounted on each surface of the inside of the box-shaped light source unit 120, and the plurality of light sources 124 can be individually controlled. At this time, the light source 124 may be an led (light Emitting diode).
Each surface of the light source unit 120 except for the bottom of the opening is formed of one or more printed circuit boards 122 on which a plurality of light sources 124 are mounted. Each surface of the light source unit 120 may be formed of one printed circuit board 122, or one surface of the light source unit 120 may be formed by connecting a plurality of printed circuit boards 122. The printed circuit board 122 may be coated with a material for reflecting light inside the light source unit 120.
The plurality of light sources 120 are mounted on the respective printed circuit substrates 122 in a direction facing the inside of the light source section 120, and the respective light sources 124 can be controlled individually. At this time, since it is a disclosed technique that each light source 124 embodies a plurality of color temperatures, a description thereof is omitted.
Fig. 3 is a cross-sectional view showing a light diffusing portion of a camera detection module of the detection apparatus for camera visibility test according to the embodiment of the present invention.
The light diffusion section 130 is attached to the inside of the light source section 120, and forms a sphere with an open bottom as shown in fig. 3. The light diffusion section 130 is a component for diffusing the light emitted from the point or linear light source along the surface to make the entire surface look uniform in color and brightness, and the light diffusion section 130 of the present embodiment functions to receive the light from the light source section 120, diffuse the light along the entire light diffusion section 130, and provide the light again to the inside of the light diffusion section 130. That is, the light diffusion portion 130 functions as a light diffusion plate, and for this reason, the material of the light diffusion portion 130 may be a material capable of uniformly diffusing light, such as a thin film type or a high-purity acrylic resin.
In particular, the light diffusion portion 130 has an angle of 240 degrees from the center to both ends of the opening at the bottom in the cross section of the periphery. As such, since the spherical light-diffusing portion 130 is provided, it is possible to perform a focusing operation or an image inspection of a camera module equipped with an ultra-wide-angle lens (fisheye lens) having a photographing angle exceeding 180 degrees.
The light source control unit 126 controls the light sources 124 based on the set light characteristics. The light source control unit 126 of the present embodiment may be disposed inside the external housing 110 as shown in the figure, or may be disposed outside. The light source 124 can be turned on by itself by the light source control unit 126, and the output value can be set based on the level of the individual light source recorded when the output level of the operation unit 140 is set.
In this embodiment, the light source unit 120 is formed in a box shape, and the distances from the respective light sources 124 to the light diffusing unit 130 of the light diffusing unit 130 in which a sphere can be seated may all be different.
Therefore, the light source control unit 126 can control the light sources 124 to make the light characteristics of the light reaching all the positions of the light diffusion unit 130 uniform. For example, the illuminance of the light source 124 far from the light diffusion unit 130 is increased relative to the illuminance of the light source 124 near the light diffusion unit 130, and the light reaching the surface of the light diffusion unit 130 is adjusted to make the light characteristics uniform.
The light source unit 120, the light diffusion unit 130, and the bottom of the external housing 110 are provided with a fixing plate 150 for fixing the respective components. The fixing plate 150 may have an opening 152 formed therein, and the optical measurement sensor 210 for the back-end may be inserted into the light diffusion portion 130.
Although not shown in detail in the drawings, an additional elastic member or a shielding material made of paint or a dark material may be provided between the fixing plate 150 and the external housing 110 and the light source unit 120 to block external light more perfectly.
As described above, the detecting apparatus for testing camera sharpness according to the embodiment of the present invention has an advantage in that it is easy to manufacture since the light source unit 120 is formed in a box shape. Further, since the size of the detection device is relatively small compared to a method of forming a predetermined angle by a plurality of surface light sources and a method using an integrating sphere, the detection of the camera can be performed even in a narrow space. Thus, the method is also suitable for a production line which needs to produce a large amount of products in a narrow space.
Fig. 4 is a diagram showing a light measuring module of the detection apparatus for camera sharpness testing according to the embodiment of the present invention.
As shown in fig. 4, the detection apparatus for testing the sharpness of a camera according to the present embodiment further includes a light measurement module 200.
As shown in fig. 4, the light measurement module 200 measures the light characteristics of the light beam irradiated into the light diffusion section 130 through the light diffusion section 130, and includes a light measurement sensor 210, a moving section 220, a rotating section 230, and a measurement control section 240.
The light measuring sensor 210 is inserted into the light diffusion portion 130 through the opening 152 of the fixing plate 150 and measures the light characteristics of the light irradiated through the inner surface of the light diffusion portion 130. The light measurement sensor 210 is electrically connected to the measurement control unit 240, and can output the measurement value to the measurement control unit 240. At this time, the light characteristics may include gray scale, color coordinates, color temperature, illuminance, and the like.
In order to control light source 124 so that all points on the inner surface of light-diffusing portion 130 have uniform light characteristics, light-measuring sensor 210 needs to be located at the same distance from all points on the inner surface of light-diffusing portion 130. That is, the light measurement sensor 210 may be located at the midpoint of the light diffusion portion 130.
In this manner, the moving unit 220 may be provided so as to position the light measuring sensor 210 at the center of the light diffusing unit 130. The moving unit 220 adjusts the height of the light measuring sensor 210 so that the light measuring sensor 210 is positioned at the midpoint of the light diffusing unit 130. For example, the light measuring sensor 210 may be first positioned on the central axis of the opening 152. Thereafter, the moving unit 220 moves the light measuring sensor 210 in the vertical direction to adjust the height of the light measuring sensor 210 so that the light measuring sensor 210 is positioned at the center of the light diffusing unit 130.
In addition, the light measuring sensor 210 may include a rotating unit 230 that can rotate the light measuring sensor 210 in all directions in order to measure the light diffusing portion 130 without having a vacant area on the inner surface thereof at the center of the light diffusing portion 130. The rotating part 230 may include a horizontal rotation motor 232 and a vertical rotation motor 234, the horizontal rotation motor 232 horizontally rotates the optical measurement sensor 210 around a rotation axis perpendicular to the mounting surface, and the vertical rotation motor 234 vertically rotates the optical measurement sensor 210 around a rotation axis horizontal to the mounting surface. In this case, the rotation unit 230 may be driven in a state where the optical measurement sensor 210 is positioned at the center of the light diffusion unit 130 by the movement unit 220, the horizontal rotation motor 232 may rotate by 0 to 360 degrees, and the vertical rotation motor 234 may rotate by 0 to 120 degrees from the center of the ball. Thus, the light measuring sensor 210 can measure the light characteristics of all areas on the inner surface of the light diffusion portion 130.
The moving unit 220 and the rotating unit 230 may be electrically connected to the measurement control unit 240, and may be controlled to automatically position the light measurement sensor 210 at the center of the light diffusion unit 130, or may be manually controlled and driven.
As shown in fig. 4, the camera detection module 100 of the present embodiment is placed on the upper portion of the light measurement module so that the light measurement sensor is positioned inside the light diffusion portion and is prevented from moving horizontally.
Fig. 5 is a block diagram showing a connection relationship of the light source, the light measuring sensor, and the control unit of the detection apparatus for testing camera sharpness as in the embodiment of the present invention.
As shown in fig. 5, the light measuring sensor 210 can measure the light characteristics of all areas on the inner surface of the light diffusing portion 130 and output the measured light characteristics to the measurement controller 240. The measurement control unit 240 compares the value input from the light measurement sensor 210 with the level of the individual light source 124 to calculate a correction value for the individual light source 124, and outputs the correction value to the light source control unit 126. Also, the light source control section 126 controls the light source 124 so that the light characteristics of the light reaching all the positions of the light-diffusing section 130 are uniform, according to the value input from the measurement control section 240.
For example, when the illuminance at the 1 st spot and the 2 nd spot on the inner surface of the light diffusing portion 130 measured by the light measuring sensor 210 is lower than the set illuminance, the measurement control unit 240 outputs a signal for increasing the illuminance of the light source 124 that irradiates light to the 1 st spot and the 2 nd spot.
Thus, the light characteristics of the light reaching the surface of the light-diffusing portion 130 are controlled to be uniform by controlling the respective light sources 124 based on the value input by the light measuring sensor 210, whereby the adjustment of the light characteristics in the detection device can be accurately and easily performed. Also, a camera detection module emitting various color temperatures may be constructed by a combination of various light sources 124.
Fig. 6 is a view showing a colorimetric illuminometer mounted on the bottom of a camera detection module of a detection apparatus for camera sharpness testing according to an embodiment of the present invention.
In addition, as shown in fig. 6, the detection apparatus for testing the sharpness of a camera according to the present embodiment further includes a colorimetric illuminometer.
The colorimetric illuminometer 300 is attached to the bottom of the opening of the light diffusing portion 130, and measures the color temperature and illuminance of the light irradiated through the light diffusing portion 130. The colorimetric illuminometer 300 may be electrically connected to the operation unit 140 via the light source control unit 126. That is, when the operation unit 140 adjusts the output level of the light source 124, the light source control unit 126 may adjust the illuminance, the color temperature, or the like of the light source 124 having uniform light characteristics by the light measurement module 200 according to a set value.
The colorimetric illuminometer 300 measures the measured value and outputs the measured value to the light source control unit 126, and the light source control unit 126 compares the value set by the operation unit 140 with the value input by the colorimetric illuminometer 300 and then controls all the light sources 124 so that the two match. This allows the illuminance, color temperature, and the like of all the light sources 124 to be precisely adjusted.
The above describes the detection apparatus for camera sharpness testing according to an embodiment of the present invention.
While the preferred embodiments of the present invention have been described above, it will be apparent to those skilled in the art that the present invention may be embodied in other specific forms than the embodiments described above without departing from the spirit or scope of the invention. Therefore, the above-described embodiments are not intended to be limiting and are intended to be illustrative, and the present invention is not limited to the above description and may be modified without departing from the spirit or scope thereof.
Claims (1)
1. A detection device for testing the definition of a camera is characterized in that,
comprises a camera detection module,
the camera detection module includes:
a light source unit having a box shape with an open bottom, each surface of which is provided with a plurality of light sources, each surface being formed by connecting one or more printed circuit boards for mounting the plurality of light sources, and the plurality of light sources being individually controllable;
a light diffusion part installed inside the light source part and forming a sphere with an angle of 240 degrees between two ends of an opening part at the bottom on a section from the center to the periphery;
a light source control unit for controlling the light sources according to the set light characteristics;
a light measuring module;
an external case which is formed in a box shape with an open bottom and in which the light source unit is disposed;
a fixing plate for fixing the light source unit, the light diffusion unit, and the external housing; and
a colorimetric illuminometer attached to a bottom of the opening of the light diffusing portion and measuring a color temperature and illuminance of the light irradiated by the light diffusing portion, wherein the light source controller compares a set value with a value input by the colorimetric illuminometer to check whether or not the set value and the input value are identical with each other, and then controls the light source to be identical with each other,
the light measurement module includes:
a light measurement sensor located inside the light diffusion portion and measuring light characteristics of light rays irradiated through all areas of the inner surface of the light diffusion portion;
a measurement control unit that compares the light characteristics input by the light measurement sensor with the actual level of the light source and calculates a correction value;
a moving unit for adjusting the height and position of the light measuring sensor so that the light measuring sensor is positioned at the center of the light diffusing unit; and
a rotating unit that rotates the light measuring sensor about a rotation axis in a horizontal direction or a vertical direction, and the light measuring module can measure light beams emitted from all positions of the light diffusion unit,
the measurement control unit outputs the correction value to the light source control unit, and the light source control unit controls the light sources according to the values input by the measurement control unit, in order to make the light characteristics of the light reaching all the positions of the light diffusion unit uniform.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109212886A (en) * | 2017-06-30 | 2019-01-15 | 鸿富锦精密工业（深圳）有限公司 | Fisheye camera mould group image test device |
| CN112577715A (en) * | 2019-09-27 | 2021-03-30 | 三赢科技（深圳）有限公司 | Point inspection method, point inspection device and computer device |
| CN110677641A (en) * | 2019-10-16 | 2020-01-10 | 广东以诺通讯有限公司 | Wide angle and focusing definition testing arrangement of camera |
| CN115348440A (en) * | 2022-08-09 | 2022-11-15 | 苏州艾微视图像科技有限公司 | Testing device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349420A (en) * | 2008-09-04 | 2009-01-21 | 浙江东方神州珍珠集团有限公司 | Ball light source device for lighting inwards |
| CN203191327U (en) * | 2013-04-19 | 2013-09-11 | 杭州电子科技大学 | Printed circuit board (PCB) defect automatic detection device based on machine vision |
| CN103698682A (en) * | 2013-12-20 | 2014-04-02 | 中国空间技术研究院 | CMOS (Complementary Metal-Oxide-Semiconductor Transistor) image sensor testing device on basis of FPGA (Field Programmable Gate Array) technology |
| CN203849552U (en) * | 2014-05-29 | 2014-09-24 | 沈阳敏像科技有限公司 | Cell phone camera shooting module optical test lamp box |
| CN203940320U (en) * | 2014-06-25 | 2014-11-12 | 昆山天重星光电科技有限公司 | A kind of shot-light with spherical diffusion cover |
| CN205049236U (en) * | 2015-09-18 | 2016-02-24 | 阔展科技(深圳)有限公司 | Camera bellows is used in test of camera optical line sensors |
| CN205388578U (en) * | 2016-01-06 | 2016-07-20 | 韩山师范学院 | Daily ceramic surface defect detecting device based on machine vision |
| CN205754684U (en) * | 2016-06-27 | 2016-11-30 | 凌云光技术集团有限责任公司 | A kind of image sensor performance test platform |
-
2018
- 2018-01-10 CN CN201810023083.4A patent/CN108366252B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349420A (en) * | 2008-09-04 | 2009-01-21 | 浙江东方神州珍珠集团有限公司 | Ball light source device for lighting inwards |
| CN203191327U (en) * | 2013-04-19 | 2013-09-11 | 杭州电子科技大学 | Printed circuit board (PCB) defect automatic detection device based on machine vision |
| CN103698682A (en) * | 2013-12-20 | 2014-04-02 | 中国空间技术研究院 | CMOS (Complementary Metal-Oxide-Semiconductor Transistor) image sensor testing device on basis of FPGA (Field Programmable Gate Array) technology |
| CN203849552U (en) * | 2014-05-29 | 2014-09-24 | 沈阳敏像科技有限公司 | Cell phone camera shooting module optical test lamp box |
| CN203940320U (en) * | 2014-06-25 | 2014-11-12 | 昆山天重星光电科技有限公司 | A kind of shot-light with spherical diffusion cover |
| CN205049236U (en) * | 2015-09-18 | 2016-02-24 | 阔展科技(深圳)有限公司 | Camera bellows is used in test of camera optical line sensors |
| CN205388578U (en) * | 2016-01-06 | 2016-07-20 | 韩山师范学院 | Daily ceramic surface defect detecting device based on machine vision |
| CN205754684U (en) * | 2016-06-27 | 2016-11-30 | 凌云光技术集团有限责任公司 | A kind of image sensor performance test platform |
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