CN2473591Y - Transmission type micro metering grating sensor - Google Patents
Transmission type micro metering grating sensor Download PDFInfo
- Publication number
- CN2473591Y CN2473591Y CN 01222274 CN01222274U CN2473591Y CN 2473591 Y CN2473591 Y CN 2473591Y CN 01222274 CN01222274 CN 01222274 CN 01222274 U CN01222274 U CN 01222274U CN 2473591 Y CN2473591 Y CN 2473591Y
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- China
- Prior art keywords
- chute
- sensor
- tubes
- miniature
- housing
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- Expired - Fee Related
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Abstract
The utility model discloses a transmitted type microphotography measurement grating sensor, which is characterized in that the two sides in the shell of the sensor is embedded with two pairs of luminescence tubes (3) and photosensitive tubes (4), the luminescence tubes (3) and the photosensitive tubes (4) are provided with a chute (5) therebetween, the chute (5) is fixed with an indication grating plate (2) on the inner wall, the main grating plate (1) passes through the chute (5), two light passing axis surfaces correspond to the luminescence tubes (3) and the photosensitive tubes (4) on the inner wall of the chute (5) are respectively provided with two parallel light gaps (6), the two light gaps (6) are provided with same gap width equal to one quarter of the moire fringe interval, the distance between the two light gaps (6) is equal to integral multiple plus a quarter of the moire fringe interval, so as to assure that the phase difference of the two signals output by the photosensitive tubes is always one half of pi, and the design can be used for the photoelectric pulse discerning direction and subdivision. The sensor not only gets rid of complex optical focusing system, but is vibration resistant, simple in manufacture, low in cost and volume, able to be directly installed on the circuit board, wide in application.
Description
The utility model relates to field of photoelectric technology, a kind of grating sensor, the miniature metrological grating sensor of particularly a kind of transmission.
The substrate of existing transmission-type grating sensor all is that quartz glass is made, thicker, light passes in the glass process refraction and scattering phenomenon in glass inside, therefore need set up the Moire fringe after a cover optical focusing system is used to detect grating interference, not only volume is big for whole sensor like this, regulate trouble, and shock resistance is poor, the manufacturing cost height.
In view of there is above-mentioned deficiency in prior art, the purpose of this utility model is to disclose a kind of miniature metrological grating sensor, and this sensor has not only saved complicated optical focusing system, make simply, vibration resistance, cost is low, and volume is little, can directly be installed on the circuit board, and is of many uses.
Above-mentioned technical solution of the present utility model is as described below:
The miniature metrological grating sensor of a kind of transmission-type, mainly comprise the indication grating sheet, main lenticular lenses and light activated element, the interior both sides intercalation of housing that it is characterized in that sensor has two pairs of luminotrons and photosensitive tube, be provided with a chute between luminotron and the photosensitive tube, be fixed with main lenticular lenses on the inwall of chute, the indication grating sheet passes through chute, logical axial plane over against luminotron and photosensitive tube on the inwall of chute is respectively equipped with two parallel light slits, identical 1/4th of the Moire fringe spacing that is of the gap width of two light slits, distance between two light slits is integer 1/4th Moire fringe spacings extraordinarily of Moire fringe spacing, with the two paths of signals phase differential that guarantees photosensitive tube output pi/2 all the time, be used for photoimpact sensing and segmentation.The Moire fringe spacing is by the angle decision of grid line on grating pitch and indication grating sheet and the main lenticular lenses, and this angle is harmonized when sensor is made.
Below in conjunction with drawings and Examples the utility model is explained in further detail,, grasps better and implement technological means of the present utility model so that the public fully understands technical solution of the present utility model.
Description of drawings
Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5 are the structural representation of a specific embodiment of the present utility model, wherein Fig. 1 is a front view, and Fig. 2 is a left view, and Fig. 3 is right view (not comprising indication grating and slide bar), Fig. 4 is a upward view, and Fig. 5 is miniature grating sensor synoptic diagram.
Embodiment is referring to Fig. 2 and Fig. 3, be manufacturing and easy for installation, first important additional technical feature of the present utility model is that described housing is linked to inserting by two duplicate half housings (9), and a side is provided with positive dovetail on the die joint of described half housing, and opposite side is provided with cloudy dovetail.During assembling the negative and positive dovetail on the two halves housing die joint is got described complete housing to inserting.
Referring to Fig. 2 and Fig. 3, wear and tear in relative motion for fear of indication grating sheet (2) and main lenticular lenses (1), second important additional technical feature of the present utility model is that the inwall of chute (5) is provided with a concave surface, and indication grating sheet (2) sticks in this concave surface; Main lenticular lenses (1) sticks in the transparent window that slide bar (7) is recessed on.
Referring to Fig. 2, for just slide bar (7) is connected with use equipment, the 3rd additional technical feature of the present utility model is that two of slide bar 7 is respectively equipped with connecting hole (8).
Ginseng Fig. 1～Fig. 4, described sensor housing (9) is designed to official's hat in ancient times, and a side is provided with mounting hole (10), so that be fixed on the use equipment; (2) individual jack is arranged in the whole housing, and two pairs of luminotrons (3) and the intercalation of photosensitive tube (4) difference are in described jack; Be provided with a chute (5) between described luminotron (3) and the photosensitive tube (4), be fixed with the indication grating sheet (2) that utilizes microphotography to make on the inwall of chute (5), the main lenticular lenses (1) that sticks in the transparent window that slide bar (7) is recessed on is passed through chute (5); Logical axial plane over against luminotron (3) and photosensitive tube (4) on the inwall of chute (5) is respectively equipped with two parallel light slits (6), identical 1/4th of the Moire fringe spacing that is of the gap width of two light slits (6), distance between two light slits (6) is integer 1/4th Moire fringe spacings extraordinarily of Moire fringe spacing, be always pi/2 with the two paths of signals phase differential that guarantees photosensitive tube output, be used for photoimpact sensing and segmentation.The inverse decision that the Moire fringe spacing goes up the grid line angle by indication grating sheet (2) and main lenticular lenses (1), this angle is harmonized when sensor is made.
Implementation method beyond the utility model is above-mentioned is implemented to get final product with reference to accompanying drawing.
Claims (5)
1. miniature metrological grating sensor of transmission-type, the interior both sides intercalation of housing that it is characterized in that sensor has two pairs of luminotrons (3) and photosensitive tube (4), be provided with a chute (5) between luminotron (3) and the photosensitive tube (4), be fixed with indication grating sheet (2) on the inwall of chute (5), main lenticular lenses (1) is passed through chute (5), logical axial plane over against luminotron (3) and photosensitive tube (4) on the inwall of chute (5) is respectively equipped with two parallel light slits (6), identical 1/4th of the Moire fringe spacing that is of the gap width of two light slits (6), distance between two light slits (6) is integer 1/4th Moire fringe spacings extraordinarily of Moire fringe spacing, be always pi/2 with the two paths of signals phase differential that guarantees photosensitive tube output, be used for photoimpact sensing and segmentation.
2. the miniature metrological grating sensor of a kind of transmission-type according to claim 1, described housing is linked to inserting by two duplicate half housings (9), and a side is provided with positive dovetail on the die joint of described half housing, and opposite side is provided with cloudy dovetail.During assembling the negative and positive dovetail on the two halves housing die joint is got described complete housing to inserting.
3. the miniature metrological grating sensor of a kind of transmission-type according to claim 1 and 2 is characterized in that the inwall of chute (5) is provided with a concave surface, and indication grating sheet (2) sticks in this concave surface; Main lenticular lenses (1) sticks in the transparent window that slide bar (7) is recessed on.
4. according to claim 1 or the miniature metrological grating sensor of (2) described a kind of transmission-type, it is characterized in that two of slide bar (7) is respectively equipped with connecting hole (8).
5. the miniature metrological grating sensor of a kind of transmission-type according to claim 1 and 2 is characterized in that a side of sensor half housing (9) is provided with fixed orifice (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01222274 CN2473591Y (en) | 2001-04-30 | 2001-04-30 | Transmission type micro metering grating sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01222274 CN2473591Y (en) | 2001-04-30 | 2001-04-30 | Transmission type micro metering grating sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2473591Y true CN2473591Y (en) | 2002-01-23 |
Family
ID=33639224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01222274 Expired - Fee Related CN2473591Y (en) | 2001-04-30 | 2001-04-30 | Transmission type micro metering grating sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2473591Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871792A (en) * | 2009-04-22 | 2010-10-27 | 富士能株式会社 | Optical position detecting and optical devices |
| CN106289330A (en) * | 2015-06-26 | 2017-01-04 | 北京纳米能源与系统研究所 | Motion vector monitoring means, monitoring method and monitoring device |
-
2001
- 2001-04-30 CN CN 01222274 patent/CN2473591Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871792A (en) * | 2009-04-22 | 2010-10-27 | 富士能株式会社 | Optical position detecting and optical devices |
| CN106289330A (en) * | 2015-06-26 | 2017-01-04 | 北京纳米能源与系统研究所 | Motion vector monitoring means, monitoring method and monitoring device |
| CN106289330B (en) * | 2015-06-26 | 2019-02-19 | 北京纳米能源与系统研究所 | Motion vector monitoring unit, monitoring method and monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhu Xiaoli Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |