CN213780284U - Photosensitive performance test system of photosensitive element - Google Patents
Photosensitive performance test system of photosensitive element Download PDFInfo
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- CN213780284U CN213780284U CN202022811303.5U CN202022811303U CN213780284U CN 213780284 U CN213780284 U CN 213780284U CN 202022811303 U CN202022811303 U CN 202022811303U CN 213780284 U CN213780284 U CN 213780284U
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- photosensitive element
- photosensitive
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- 238000011056 performance test Methods 0.000 title abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 64
- 230000003287 optical effect Effects 0.000 claims abstract description 24
- 206010034972 Photosensitivity reaction Diseases 0.000 claims description 11
- 230000036211 photosensitivity Effects 0.000 claims description 11
- 230000035945 sensitivity Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 8
- 230000001737 promoting effect Effects 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 abstract description 2
- 206010034960 Photophobia Diseases 0.000 abstract 1
- 208000013469 light sensitivity Diseases 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 206010070834 Sensitisation Diseases 0.000 description 2
- 230000008313 sensitization Effects 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000013522 software testing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model discloses a photosensitive element's photosensitive performance test system, include: the optical signal unit is used for emitting a light beam with preset brightness to the photosensitive component; ash card; the ash card driving device is in driving connection with the ash card and is used for driving the ash card to move relative to the photosensitive element; and the test host is connected with the photosensitive element, the optical signal unit and the ash card driving device respectively, and is used for controlling the ash card driving device so as to adjust the distance between the ash card and the photosensitive element and obtain photosensitive performance parameters of the photosensitive element at corresponding distances. The utility model discloses an adopt the relative photosensitive element of ash card drive arrangement drive ash card to remove to adjust ash card height, realize effectively promoting the detection precision to the automated inspection of photosensitive element's light sensitivity, simplify and just detect the step, and help promoting detection efficiency.
Description
Technical Field
The utility model relates to a chip test field, in particular to photosensitive element's sensitization capability test system.
Background
SIP (System In a Package) is a packaging scheme that integrates multiple functional wafers, including functional wafers such as processors and memories, into one Package according to factors such as application scenarios and the number of layers of a Package substrate, thereby achieving a basic complete function. When the existing SIP chip is packaged with photosensitive elements such as a light detector and the like, in order to detect the photosensitive performance of the photosensitive elements, a manual detection mode is usually adopted, and as the ash card needs to be adjusted to different height states for detection, the existing manual detection mode easily has the problem that the ash card is inaccurate in adjustment, and the accuracy of a detection result is directly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a photosensitive element's photosensitive performance test system aims at carrying out automatic test according to the photosensitive performance to photosensitive element under the different grey card height.
In order to achieve the above object, the utility model provides a photosensitive element's photosensitive performance test system, include:
the optical signal unit is used for emitting a light beam with preset brightness to the photosensitive component;
ash card;
the ash card driving device is in driving connection with the ash card and is used for driving the ash card to move relative to the photosensitive element; and
the test host is connected with the photosensitive element, the optical signal unit and the ash card driving device respectively and used for controlling the ash card driving device so as to adjust the distance between the ash card and the photosensitive element and obtain photosensitive performance parameters of the photosensitive element at corresponding distances.
Optionally, the test host includes:
the controller is connected with the ash card driving device and used for adjusting the distance between the ash card and the photosensitive element; and
and the signal reading device is respectively connected with the photosensitive element and the controller, and is used for reading the photosensitive performance parameters of the photosensitive element and sending the photosensitive performance parameters to the controller.
Optionally, the photosensitive element converts the optical signal of the light beam into an electrical signal, and the photosensitive performance parameter of the photosensitive element is a current value of the electrical signal.
Optionally, the optical signal unit includes:
a light source; and
and the power supply module is electrically connected with the light source and the controller respectively and is used for supplying power to the light source.
Optionally, the optical signal unit further includes:
the controller is connected with the power supply module through the current adjusting module, and the current adjusting module is used for adjusting the current value output by the power supply module.
Optionally, the test host further includes:
and the display device is electrically connected with the controller and is used for displaying the current value output by the power supply module and/or the distance between the gray card and the photosensitive element and the photosensitive performance parameters of the photosensitive element under the corresponding distance.
Optionally, the light source is an LED lamp.
Optionally, the gray scale of the gray card is 18%.
Optionally, the test system further comprises:
photosensitive element fixes a position the frock, photosensitive element locates photosensitive element fixes a position the frock.
The utility model discloses technical scheme removes through adopting the relative photosensitive element of grey card drive arrangement drive grey card to adjust grey card height, send the light beam of predetermineeing luminance to photosensitive element through the light signal unit, utilize the test host computer to acquire the sensitive performance parameter of photosensitive element when grey card and photosensitive element are in under the different distances, and then realize the automated inspection to photosensitive element's photosensitive performance, can effectively promote the detection precision, simplify and just detect the step, and help promoting detection efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a system for testing photosensitivity of a photosensitive device according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
11 | |
| 12 | |
20 | Photosensitive |
| 21 | |
30 | |
| 31 | |
32 | |
| 33 | |
40 | |
| 41 | Ash |
50 | Display device |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a photosensitive element's photosensitive performance test system, test system is used for the test to change light signal into the photosensitive element 21's of specific parameter photosensitive performance like photoelectric sensor etc..
Referring to fig. 1, in an embodiment, the system for testing the sensitivity of the photosensitive device 21 includes: an optical signal unit 30 for emitting a light beam having a preset brightness to the photosensitive device; a gray card 40; the ash card driving device 41 is in driving connection with the ash card 40 and is used for driving the ash card 40 to move relative to the photosensitive element 21; and the test host 10 is connected with the photosensitive element 21, the optical signal unit 30 and the ash card driving device 41 respectively, and the test host 10 is used for controlling the ash card driving device 41 to adjust the distance between the ash card 40 and the photosensitive element 21 and obtain photosensitive performance parameters of the photosensitive element 21 at corresponding distances.
The photosensitive element 21 is installed at a preset position, and the optical signal unit 30 is disposed toward the photosensitive element 21 and configured to emit a light beam with preset brightness to the photosensitive element 21. The light beam emitted by the light signal unit 30 is irradiated onto the light sensing element 21, and the light sensing element 21 receives the light signal and converts the light signal into a specific parameter.
The gray card 40 is used for balancing the light beam emitted by the optical signal unit 30. The ash card driving device 41 is connected to the ash card 40, and is configured to drive the ash card 40 to move relative to the photosensitive element 21, so as to adjust a distance between the ash card 40 and the photosensitive element 21. In this embodiment, the gray card 40 may select the gray card 40 with 18% gray to balance the light beam to a neutral gray state. The ash card driving device 41 is used for adjusting the position of the ash card 40, taking the ash card 40 moving up and down as an example, the ash card driving device 41 may be a lifting table used for adjusting the height of the ash card 40. The test host 10 is configured to control the movement of the ash card driving device 41, and read a distance between the ash card 40 and the photosensitive element 21 by controlling a movement state of the ash card driving device 41. The ash card driving device 41 can adopt a structure such as an air cylinder, an electric cylinder and the like to realize quantitative control of the moving distance of the ash card 40.
The test host 10 is connected with the photosensitive element 21, and when the ash card 40 moves to a preset distance, is used for acquiring photosensitive performance parameters of the photosensitive element 21 at the preset distance. The photosensitivity parameter is used for reflecting the photosensitivity of the photosensitive element 21 under the irradiation of the light beam with the preset brightness when the gray card 40 is at the preset distance.
There are various parameters for characterizing the photosensitive performance of the photosensitive element, in this embodiment, the photosensitive performance parameter may be a current value, a photosensitive capability, a full charge capacity, a signal-to-noise ratio, or the like converted by the photosensitive element 21, or other parameters may be selected as the photosensitive performance parameter according to needs.
In one embodiment, the converted current value of the photosensitive element 21 is used as the photosensitive performance parameter. The light signal unit 30 emits a light beam with a preset brightness, the photosensitive element 21 converts the light signal into an electrical signal under the irradiation of the light beam with the preset brightness, and the photosensitive performance parameter of the photosensitive element 21 can be determined according to the current value by reading the current value. For example, when the photosensitive element is used in a pulse sensor, the photosensitive element testing system is used to detect the signal size of light reflected by the gray card, the photosensitive element 21 converts the light signal into an electrical signal, and after the electrical signal is obtained, the electrical signal is compared with an electrical signal value corresponding to the minimum light signal, so as to obtain a photosensitive performance parameter of the photosensitive element in the pulse sensor. The test host 10 adjusts and drives the ash card driving device 41 to move so as to adjust the distance between the ash card 40 and the photosensitive element 21. The above operations are repeated to obtain the values of the photosensitivity parameters of the gray card 40 at different distances from the photosensitive element 21. The test host 10 may configure an existing program for acquiring the parameters, and the test host 10 may call the program to implement the test steps.
In another embodiment, signal-to-noise ratio is used as the photosensitive performance parameter. The snr is a result of acquiring an image of the gray card 40 by using the photosensitive element 21 when adjusting the brightness of the light beam emitted by the optical signal unit 30, extracting a signal value of 100 × 100 pixels in the center of the image of the gray card 40, sequentially performing white balance, color correction matrix and difference calculation on the signal value of 100 × 100 pixels in the center of the image of the gray card 40 to obtain a processed signal value, calculating a signal-to-noise ratio according to the processed signal value, plotting the signal-to-noise ratio and a brightness curve of the light beam emitted by the optical signal unit 30, and taking a corresponding brightness value of the light beam emitted by the optical signal unit 30 when the signal-to-noise ratio is equal to a specific value as a final signal-to-noise ratio. The method in the previous embodiment adjusts the distance between the gray card 40 and the photosensitive element 21, repeats the above test steps, compares the final snr result with the preset snr of the photosensitive element 21, and determines the photosensitive performance test result of the photosensitive element 21. The test host 10 may configure an existing program for acquiring the parameters, and the test host 10 may call the program to implement the test steps.
Because can pass through grey card drive arrangement 41 adjustment grey card 40 with distance between the photosensitive element 21 realizes grey card 40 with photosensitive element 21 is in under the different distances photosensitive performance parameter test of photosensitive element 21 can realize carrying out automatic adjustment to above-mentioned distance, avoids the inaccurate problem that manual adjustment exists, helps promoting the precision of test.
It can be understood that the utility model discloses in, can test host computer 10 with current procedure is saved in the grey card drive arrangement 41, through realizing above-mentioned operating procedure, through the mode that adopts automatic test, can realize getting rid of artificial operation interference, promotion measuring accuracy and efficiency of software testing.
In an embodiment, the testing system further includes a photosensitive element positioning tool 20, and the photosensitive element 21 is disposed on the photosensitive element positioning tool 20, so that the photosensitive element 21 can be located at a preset position according to a preset state, and the testing accuracy of the photosensitive performance parameter of the photosensitive element 21 is improved.
In order to obtain the test result intuitively, in an embodiment, the test system further includes a display device 50, and the display device 50 is connected to the test host 10 for displaying the test result. The display device 50 can also be used to display the brightness value of the light beam emitted by the light signal unit 30, the brightness value is related to the current value of the light signal unit 30, the current value can be displayed on the display device 50, and the distance parameter between the gray card 40 and the photosensitive element 21 can also be displayed. It is understood that the converted current value and/or light sensing capability and/or full charge capacity and/or signal-to-noise ratio of the light sensing element 21 can also be displayed on the display device 50 to facilitate visual acquisition of the test result. In this embodiment, the display device 50 may be directly disposed on the test host 10, may be a display screen on the test host 10, or may be disposed on an upper computer connected to the test host 10. The above-mentioned photosensitivity parameters may be transmitted to the display device 50 by an existing control program.
Referring to fig. 1, the test host 10 includes: the controller 11 is connected with the ash card driving device 41, and the controller 11 is used for adjusting the distance between the ash card 40 and the photosensitive element 21; and a signal reading device 12, respectively connected to the photosensitive element 21 and the controller 11, for reading the photosensitive performance parameter of the photosensitive element 21 and sending the parameter to the controller 11.
The signal reading device 12 reads the light sensing performance parameters, such as the current value when the light sensing element 21 converts the light signal into the electric signal. The controller 11 stores an existing control program, and the controller 11 calls the control program to drive the ash card driving device 41, so as to adjust the distance between the ash card 40 and the photosensitive element 21. The controller 11 calls the control program to obtain the photosensitivity parameter read by the signal reading device 12. The controller 11 may also be connected to the display device 50 to send the obtained photosensitivity parameters to the display device 50, so as to realize intuitive data display.
Referring to fig. 1, in an embodiment, the optical signal unit 30 includes: a light source 31; and a power module 32 electrically connected to the light source 31 and the controller 11, respectively, for providing power to the light source 31. By activating the power module 32, the light source 31 emits a light beam to the photosensitive element 21. The light source 31 may be an LED lamp, or the like, and the required light source 31 equipment may be selected according to the requirement. The controller 11 may control the on/off of the light source 31 by turning on or off the power module 32.
In order to test the photosensitive performance parameters of the photosensitive element 21 at different brightness, in this embodiment, optionally, the optical signal unit 30 further includes: and the controller 11 is connected with the power module 32 through the current adjusting module 33, and the current adjusting module 33 is used for adjusting the current value output by the power module 32. The current adjusting module 33 is configured to adjust a current value output by the power module 32 to the light source 31, so that the light source 31 presents different brightness.
In this embodiment, the controller 11 may call a program stored therein to read a current value of the light source 31, and transmit the current value to the display device 50 for displaying. The test result is obtained by reading the current value of the electrical signal converted by the light sensing element 21 and comparing the current value with the current value of the light source 31.
Referring to fig. 1, the principle of the present invention will be described in detail below with reference to the accompanying drawings. The utility model discloses a storage has the current procedure that is used for carrying out test operation and reachs the test result in the test host 10, through controller 11 control in the test host 10 ash card drive arrangement 41's operation makes ash card drive arrangement 41 drive drives ash card 40 and removes the in-process, changes ash card 40 with distance between the light sensing element 21 when ash card 40 reaches the preset distance, light signal unit 30 to light sensing element 21 sends the light beam, light sensing element 21 receives the light beam and converts light signal, obtains the sensitization performance parameter under the corresponding distance. At this time, the brightness of the light beam emitted by the optical signal unit 30 may be adjusted to obtain the photosensitive performance parameters of the photosensitive element 21 under the irradiation of the light beams with different brightness at the specific distance, and the corresponding parameters are compared with the standard parameters to obtain the test result of the photosensitive performance parameters of the photosensitive element 21 under the irradiation of the light beams with different brightness at the specific distance.
After the test result of the photosensitive performance parameters of the photosensitive element 21 at the specific distance is completed, the test host 10 calls an internal existing program to drive the ash card driving device 41, so as to quantitatively adjust the distance between the ash card 40 and the photosensitive element 21, and repeats the steps of sending a light beam to the photosensitive element 21 by the optical signal unit 30, receiving the light beam by the photosensitive element 21, converting the light signal to obtain the photosensitive performance parameters at the corresponding distance, so as to obtain the photosensitive performance parameters of the photosensitive element 21 at different distances. The test host 10 sends the photosensitive performance parameter information to the display device 50, so that the staff can visually obtain the corresponding information to judge whether the photosensitive performance parameter of the photosensitive element 21 meets the preset standard.
Claims (9)
1. A system for testing the sensitivity of a photosensitive element, comprising:
the optical signal unit is used for emitting a light beam with preset brightness to the photosensitive element;
ash card;
the ash card driving device is in driving connection with the ash card and is used for driving the ash card to move relative to the photosensitive element; and
the test host is connected with the photosensitive element, the optical signal unit and the ash card driving device respectively and used for controlling the ash card driving device so as to adjust the distance between the ash card and the photosensitive element and obtain photosensitive performance parameters of the photosensitive element at corresponding distances.
2. A system for testing a sensitivity of a photosensitive element according to claim 1, wherein the test host comprises:
the controller is connected with the ash card driving device and used for adjusting the distance between the ash card and the photosensitive element; and
and the signal reading device is respectively connected with the photosensitive element and the controller, and is used for reading the photosensitive performance parameters of the photosensitive element and sending the photosensitive performance parameters to the controller.
3. The system for testing photosensitivity of a photosensitive element according to claim 2, wherein the photosensitive element converts an optical signal of the light beam into an electrical signal, and the parameter of photosensitivity of the photosensitive element is a current value of the electrical signal.
4. A sensitivity performance testing system for a sensitive element according to claim 2 or 3, wherein said optical signal unit includes:
a light source; and
and the power supply module is electrically connected with the light source and the controller respectively and is used for supplying power to the light source.
5. The system for testing a photosensitivity of a photosensitive element according to claim 4, wherein said optical signal unit further comprises:
the controller is connected with the power supply module through the current adjusting module, and the current adjusting module is used for adjusting the current value output by the power supply module.
6. The photosensitive performance testing system of a photosensitive element according to claim 5, wherein said test host further comprises:
and the display device is electrically connected with the controller and is used for displaying the current value output by the power supply module and/or the distance between the gray card and the photosensitive element and the photosensitive performance parameters of the photosensitive element under the corresponding distance.
7. The system for testing the photosensitivity of a photosensitive element according to claim 4, wherein said light source is an LED lamp.
8. A sensitivity performance testing system for a photosensitive element according to any one of claims 1 to 3, wherein the gray scale of the gray card is 18%.
9. A sensitivity performance testing system for a photosensitive element according to any one of claims 1 to 3, further comprising:
photosensitive element fixes a position the frock, photosensitive element locates photosensitive element fixes a position the frock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022811303.5U CN213780284U (en) | 2020-11-27 | 2020-11-27 | Photosensitive performance test system of photosensitive element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022811303.5U CN213780284U (en) | 2020-11-27 | 2020-11-27 | Photosensitive performance test system of photosensitive element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213780284U true CN213780284U (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022811303.5U Expired - Fee Related CN213780284U (en) | 2020-11-27 | 2020-11-27 | Photosensitive performance test system of photosensitive element |
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| Country | Link |
|---|---|
| CN (1) | CN213780284U (en) |
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2020
- 2020-11-27 CN CN202022811303.5U patent/CN213780284U/en not_active Expired - Fee Related
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Granted publication date: 20210723 |