CN202903329U - Four-quadrant light detector - Google Patents
Four-quadrant light detector Download PDFInfo
- Publication number
- CN202903329U CN202903329U CN 201220526775 CN201220526775U CN202903329U CN 202903329 U CN202903329 U CN 202903329U CN 201220526775 CN201220526775 CN 201220526775 CN 201220526775 U CN201220526775 U CN 201220526775U CN 202903329 U CN202903329 U CN 202903329U
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- pcb board
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Abstract
The utility model provides a four-quadrant light detector which comprises PD chips and a PCB plate. The PD chips are distributed on the PCB board which is provided with a center hole. Photosensitive surfaces of the PD chips are circular sectors with the center hole as a center of a circle. The four-quadrant light detector has the advantages that azimuth and displacement of a target object can be accurately positioned, a complex degree of latter calculation is decreased, and a response speed of a sensor is raised.
Description
Technical field
The utility model relates to four-quadrant optical semiconductor detector, refers to especially a kind of for pinpoint four-quadrant photo-detector.
Background technology
Quadrant detector is a kind of back-biased semiconductor diode array, and when the optical radiation of testee equated to the radiation flux on the detector photosurface of each quadrant of device, then the photocurrent of each quadrant output equated.When skew occured target, the variation owing to radiation flux between quadrant caused that the output current of all quadrants changes, thereby can measure the variation of the position of object, plays the effect of accurate location, displacement monitoring.Traditional 4 quadrant detector is a kind of strip structure, be assembled on the pcb board, a central rotating shaft hole is arranged on the pcb board, when pcb board during around the central shaft high-speed rotation, high-frequency variation is also occuring in the luminous flux that target object is radiated on the detector, this variation sends to external circuit by the form of photocurrent again, by calculating, namely accurately orients the orientation, displacement of target object etc.The quadrant detector of this strip structure, because in different angles, the size of photosurface received radiation is different, so bearing accuracy is not enough, and subsequent calculations is complicated.
The utility model content
For above-mentioned weak point of the prior art, the utility model provides a kind of four-quadrant photo-detector, it is constant at photosurface receiving area when central shaft rotates, accurately orientation and the displacement of localizing objects object, and reduced the complexity that the later stage calculates, thereby improved the sensor response speed.
The technical solution of the utility model is achieved in that a kind of four-quadrant photo-detector, comprise PD chip and pcb board, described PD chip distribution is on pcb board, and pcb board is provided with center pit, and the photosurface of described PD chip is to be the setting of fan arc as the center of circle take center pit.
Further, the fan arc radian of the photosurface of described PD chip is 45 °.
Further, described PD chip is four, and the distribution that is centrosymmetric centered by center pit of four PD chips.
Compared with prior art, the utility model has the advantage of: energy is orientation and the displacement of localizing objects object accurately, and has reduced the complexity of later stage calculating, thereby has improved the sensor response speed.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the vertical view of the utility model embodiment.
Among the figure: 1, pcb board; 2, PD chip; 21, photosurface; 3, center pit.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment: referring to Fig. 1, a kind of four-quadrant photo-detector, comprise PD chip 2 and pcb board 1, described PD chip 2 is distributed on the pcb board 1, pcb board 1 is provided with center pit 3, the photosurface 21 of described PD chip 2 is to be the fan arc as the center of circle take center pit, and the fan arc radian of the photosurface 21 of PD chip 2 is 45 °.Setting can more accurate localizing objects object like this orientation and displacement, and reduced the complexity that the later stage calculates, thus improved the sensor response speed.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. a four-quadrant photo-detector comprises PD chip and pcb board, and described PD chip distribution is on pcb board, and pcb board is provided with center pit, it is characterized in that: the photosurface of described PD chip is to be the setting of fan arc as the center of circle take center pit.
2. a kind of four-quadrant photo-detector according to claim 1, it is characterized in that: the fan arc radian of the photosurface of described PD chip is 45 °.
3. a kind of four-quadrant photo-detector according to claim 1 and 2, it is characterized in that: described PD chip is four, and the distribution that is centrosymmetric centered by center pit of four PD chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526775 CN202903329U (en) | 2012-10-15 | 2012-10-15 | Four-quadrant light detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526775 CN202903329U (en) | 2012-10-15 | 2012-10-15 | Four-quadrant light detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202903329U true CN202903329U (en) | 2013-04-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220526775 Expired - Lifetime CN202903329U (en) | 2012-10-15 | 2012-10-15 | Four-quadrant light detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202903329U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332701A (en) * | 2014-08-15 | 2015-02-04 | 中国空空导弹研究院 | Terahertz/laser lamination detector |
| CN106549078A (en) * | 2016-11-16 | 2017-03-29 | 中国电子科技集团公司第四十四研究所 | Four-quadrant avalanche probe component |
| CN107271142A (en) * | 2017-05-22 | 2017-10-20 | 河海大学 | Real-time optical fiber positioning device and localization method based on center drilling type 4 quadrant detector |
| CN108662979A (en) * | 2018-05-04 | 2018-10-16 | 西安雷华测控技术有限公司 | A kind of 4 quadrant detector |
-
2012
- 2012-10-15 CN CN 201220526775 patent/CN202903329U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332701A (en) * | 2014-08-15 | 2015-02-04 | 中国空空导弹研究院 | Terahertz/laser lamination detector |
| CN104332701B (en) * | 2014-08-15 | 2017-09-01 | 中国空空导弹研究院 | A kind of Terahertz, laser laminated detector |
| CN106549078A (en) * | 2016-11-16 | 2017-03-29 | 中国电子科技集团公司第四十四研究所 | Four-quadrant avalanche probe component |
| CN107271142A (en) * | 2017-05-22 | 2017-10-20 | 河海大学 | Real-time optical fiber positioning device and localization method based on center drilling type 4 quadrant detector |
| CN107271142B (en) * | 2017-05-22 | 2019-06-18 | 河海大学 | Real-time optical fiber positioning device and localization method based on center opening type 4 quadrant detector |
| CN108662979A (en) * | 2018-05-04 | 2018-10-16 | 西安雷华测控技术有限公司 | A kind of 4 quadrant detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
|
| CX01 | Expiry of patent term |