CN2779493Y - Multi-surface reflector having arc surface for bar code reader - Google Patents
Multi-surface reflector having arc surface for bar code reader Download PDFInfo
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- CN2779493Y CN2779493Y CN 200520000223 CN200520000223U CN2779493Y CN 2779493 Y CN2779493 Y CN 2779493Y CN 200520000223 CN200520000223 CN 200520000223 CN 200520000223 U CN200520000223 U CN 200520000223U CN 2779493 Y CN2779493 Y CN 2779493Y
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- bar code
- polygonal mirror
- mirror
- reading device
- arc
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Abstract
The utility model relates to a multi-surface reflector having cambered curved surfaces for a bar code reading device. The utility model is put forward in order to provide with a part of an electronic reading device, which enables the scanning angle to be free from limitation and laser light to have good light focusing effect. The utility model is arranged in the bar code reading device which comprises a base, a projecting structure of a laser source and mirror sets, wherein the mirror sets are annularly arranged. A multi-surface reflector is positioned in the position of the laser source projecting direction of the projecting structure of the laser source. The mirror sets which are annularly arranged are arranged between the multi-surface reflector and the projecting structure of the laser source. The bottom part of the multi-surface reflector is connected with a motor which drives the multi-surface reflector to rotate. Each of the reflecting mirror surfaces of the multi-surface reflector is one cambered curved surface.
Description
Technical field
The utility model belongs to the electronic reading device parts, particularly a kind of bar code reading device polygonal mirror with arc-shaped curved surface.
Background technology
At present, looking into the bar code reading device has been widely used in the various fields.For example in occasions such as department store, supermarket, commodity sales field, handling of goods and materials, all generally adopt the bar code reading device as electronic assistance aids.Auxiliary by the bar code reading device makes the staff can be rapidly and read price and other Products Information of every product efficiently, the calculation process of matching computer again, thus can reach the demand of saving manpower, promoting work efficiency, automatic management.
As Fig. 1, Fig. 2, shown in Figure 3, traditional comprehensive bar code reading device comprises base housing 1, is disposed at LASER Light Source projective structure 3 ', polygonal mirror 4 and circular row catoptron 5 that base housing 1 one sides project laser beam.
LASER Light Source projective structure 3 ' comprises the laser diode 2 that is disposed in the laser diode accommodation seat 11, obliquely is placed in first reflecting optics 31, second reflecting optics 32 and the 3rd reflecting optics 33 of 12 inside, projecting slot chamber.Second reflecting optics 32 and the 3rd reflecting optics 33 are disposed in the mirror group accommodation chamber 13.
First reflecting optics 31, second reflecting optics 32 and the 3rd reflecting optics 33 are according to the reflection angle needs of laser beam and with the angle of inclination configuration, so that the laser beam (LaserBeam) that laser diode 2 is sent can project via first reflecting optics 31, second reflecting optics 32 and the 3rd reflecting optics 33 second fluting 132 by mirror group accommodation chamber 13 respectively.
Polygonal mirror 4 (Polygon Mirror) and circular row reflector group 5 ' are disposed at another side of base housing 1, and make circular row reflector group 5 ' be configured between polygonal mirror 4 and the 3rd catoptron 33, and ring is adjacent to polygonal mirror 4.
The bottom of polygonal mirror 4 connects motor 41, and can be under the driving of motor 41 and rotate.
As shown in Figure 3, when the polygonal mirror position of the comprehensive bar code reading device of tradition is positioned at the different rotary angle, the laser beam order that laser diode 2 sends is via after first reflecting optics 31, second reflecting optics 32 and the 3rd reflecting optics 33, project the minute surface of the correspondence of laser beam L11 to the multiaspect catoptron 4 by the 3rd reflecting optics 33, by polygonal mirror 4 laser beam is projected to a reflecting optics in the circular row reflector group 5 ' with reflector laser light L12 again.At last can be again by the reflection of the reflecting optics of circular row reflector group 5 ' and project scan laser light to target bar code (not shown), carry out the scanning of bar code and read.
As shown in Figure 4, because polygonal mirror 4 is by motor 41 driven in rotation, so laser beam L11 is when throwing to polygonal mirror 4, can be projected to another reflecting optics of circular row reflector group 5 ' by a minute surface in the polygonal mirror 4 with different crevice projection angles, so can produce scan laser light to the target bar code, and carry out omnibearing bar code scan function.
As for receiving the light aspect, then sequentially produce by laser beam that the target bar code reflected and to receive ray laser light by circular row reflector group 5 ', polygonal mirror 4, the 3rd reflecting optics 33 by the reverse path in above-mentioned light path path, the last Photosensing Units that is projected to appropriate position, base housing 1 bottom again by focus lamp 34 focusing that are configured in base housing 1 inside, for example photodiode (Photo Diode) receives and receives ray laser light, and cooperates control circuit to understand out the information of bar code.
In the traditional bar code scan technology that adopts polygonal mirror, though provide preferable bar code information to read effect, its scanning angle still is restricted, and the effect of receipts light optically focused still remains to be improved.The structure that is polygonal mirror of tracing it to its cause all is to adopt the design of plane mirror surface, and the mirror surface that causes polygonal mirror is at the reflex time that carries out laser beam, and its reflection angle can be subjected to the restriction of plane mirror surface.
For example with in the polygonal mirror structure with four sides catoptron, its each mirror surface the angle of reflectible laser beam must be less than 180 °.And aspect the receipts light spotlight effect of laser beam, the mirror surface of polygonal mirror only is responsible for simple laser beam function of reflecting, there is no the effect of optically focused.Therefore real being necessary improved at the shortcoming of the polygonal mirror of traditional bar code reading device, is restricted and the spotlight effect of laser beam in scanning angle to improve polygonal mirror.
Summary of the invention
The purpose of this utility model provides a kind of bar code reading device polygonal mirror with arc-shaped curved surface that scanning angle is unrestricted, the laser beam focusing effect is good that makes.
The utility model is disposed in the bar code reading device that comprises pedestal, LASER Light Source projective structure and circular row reflector group, polygonal mirror is positioned at the position of the LASER Light Source projecting direction of LASER Light Source projective structure, configuration circular row reflector group between polygonal mirror and the LASER Light Source projective structure; The bottom of polygonal mirror is connected with the motor that drives the polygonal mirror rotation; Each mirror surface of polygonal mirror is an arc-shaped curved surface.
Wherein:
Polygonal mirror has the mirror surface more than at least three.
The surface of each mirror surface is to form arc-shaped curved surface in the mode that optical reflectors is coated with.
Because the utility model is disposed in the bar code reading device that comprises pedestal, LASER Light Source projective structure and circular row reflector group, polygonal mirror is positioned at the position of the LASER Light Source projecting direction of LASER Light Source projective structure, configuration circular row reflector group between polygonal mirror and the LASER Light Source projective structure; The bottom of polygonal mirror is connected with the motor that drives the polygonal mirror rotation; Each mirror surface of polygonal mirror is an arc-shaped curved surface.During use, the LASER Light Source projective structure projects the arc-shaped curved surface mirror surface of the correspondence of laser beam to the bar code reading device polygonal mirror that the utlity model has arc-shaped curved surface, again by the camber reflection minute surface with laser beam with the reflecting optics of reflector laser ray cast to the circular row reflector group; At last can be again by the reflection of the reflecting optics of circular row reflector group and project scan laser light to the target bar code, carry out the scanning of bar code to read; Because polygonal mirror is to be rotated by direct motor drive, so laser beam throws when having the bar code reading device polygonal mirror of arc-shaped curved surface, can be projected to another reflecting optics of circular row reflector group by an arc-shaped curved surface mirror surface with different crevice projection angles, so can produce scan laser light to the target bar code, and carry out omnibearing bar code scan function.By the utility model is the mirror surface of arc-shaped curved surface, make configuration bar code reading device of the present utility model reach suitable laser beam spotlight effect, and by by the design of the mirror surface of arc-shaped curved surface, can break through the restriction of scanning angle and obtain optimized scanning effect; Moreover, because the reflectible laser beam of arc-shaped curved surface mirror surface of the present utility model expands to bigger angle, make the effect of closeer sweep trace projection to the target bar code so can produce, help reading of target bar code.Not only make scanning angle unrestricted, and the laser beam focusing effect is good, thereby reaches the purpose of this utility model.
Description of drawings
Fig. 1, be traditional comprehensive bar code reading device decomposition texture schematic isometric.
Fig. 2, be A-A cut-open view among Fig. 1.
Fig. 3, be that traditional comprehensive bar code reading device uses synoptic diagram one.
Fig. 4, be that traditional comprehensive bar code reading device uses synoptic diagram two.
Fig. 5, for the configuration bar code reading apparatus structure schematic isometric of the present utility model.
Fig. 6, for the configuration bar code reading device decomposition texture schematic isometric of the present utility model.
Fig. 7, for the configuration bar code reading apparatus structure diagrammatic top view of the present utility model.
Fig. 8, for the configuration bar code reading apparatus structure schematic front view of the present utility model.
Fig. 9, be B-B cut-open view among Fig. 6.
Embodiment
As Fig. 5, Fig. 6, Fig. 7, shown in Figure 8, the bar code reading device polygonal mirror 7 that the utlity model has arc-shaped curved surface is disposed at and comprises in pedestal 6, the bar code reading device in order to the LASER Light Source projective structure 3 that projects laser beam and circular row reflector group 5.
Bar code reading device LASER Light Source projective structure 3 is disposed at a side of pedestal 6, and LASER Light Source projective structure 3 comprises laser diode and several pieces reflecting optics.
The bar code reading device polygonal mirror 7 that the utlity model has arc-shaped curved surface is disposed at the position of the LASER Light Source projecting direction of LASER Light Source projective structure 3, and disposes circular row reflector group 5 between bar code reading device polygonal mirror 7 with arc-shaped curved surface and LASER Light Source projective structure 3.
The bottom that the utlity model has the bar code reading device polygonal mirror 7 of arc-shaped curved surface is connected with motor 71, and can rotate with predetermined rotating speed at the following of driving of motor 71.
As shown in Figure 9, each mirror surface that the utlity model has the bar code reading device polygonal mirror 7 of arc-shaped curved surface adopts the structural design of arc-shaped curved surface.In the present embodiment, the bar code reading device polygonal mirror 7 that the utlity model has arc-shaped curved surface has four camber reflection minute surface 7a, 7b, 7c, 7d, and each camber reflection minute surface 7a, 7b, 7c, 7d all are the concave arc curved surface.
The arc-shaped curved surface of each mirror surface that the utlity model has the bar code reading device polygonal mirror 7 of arc-shaped curved surface adopts sphere, curved surface or aspheric structure, and its curved surface radian can and have the optical path length between the bar code reading device polygonal mirror 7 of arc-shaped curved surface and determines according to size, LASER Light Source projective structure 3, the circular row reflector group 5 of the bar code reading device polygonal mirror 7 with arc-shaped curved surface.
The surface that the utlity model has each mirror surface 7a, 7b, 7c, the 7d of the bar code reading device polygonal mirror 7 of arc-shaped curved surface is that the mode with the optical reflectors coating forms arc-shaped curved surface.When actual fabrication, can straight forming go out to have the mirror surface of mirror surface, also can form mirror surface with the optical reflectors coating at matrix surface with arc-shaped curved surface.
In the present embodiment, bar code reading device polygonal mirror 7 with arc-shaped curved surface comprises four camber reflection minute surface 7a, 7b, 7c, 7d, reflectible laser beam angle spread to 270 of each camber reflection minute surface institute °, thus tradition to have 180 ° the angle that the polygonal mirror of plane mirror on four sides can reach big.
Comprise five catoptron 5a, 5b, 5c, 5d, 5e, 5f with the circular row reflector group 5 of bar code reading device polygonal mirror 7 collocation that the utlity model has arc-shaped curved surface, so can cause the effect of the closeer sweep trace projection of generation, help reading of target bar code to the target bar code.
During use, the laser beam order that laser diode sends is via behind several pieces reflecting optics, project the arc-shaped curved surface mirror surface of the correspondence of laser beam to the bar code reading device polygonal mirror 7 that the utlity model has arc-shaped curved surface by last reflecting optics, again by the camber reflection minute surface with laser beam with the reflecting optics of reflector laser ray cast to the circular row reflector group 5.At last can be again by the reflection of the reflecting optics of circular row reflector group 5 and project scan laser light to the target bar code, carry out the scanning of bar code to read; And owing to the bar code reading device polygonal mirror 7 that the utlity model has arc-shaped curved surface is by motor 71 driven in rotation, so laser beam throws when having the bar code reading device polygonal mirror 7 of arc-shaped curved surface, can be projected to another reflecting optics of circular row reflector group 5 by an arc-shaped curved surface mirror surface with different crevice projection angles, so can produce scan laser light to the target bar code, and carry out omnibearing bar code scan function.By the utility model is the mirror surface of arc-shaped curved surface, make configuration bar code reading device of the present utility model reach suitable laser beam spotlight effect, and by by the design of the mirror surface of arc-shaped curved surface, can break through the restriction of scanning angle and obtain optimized scanning effect; Moreover, because the reflectible laser beam of arc-shaped curved surface mirror surface of the present utility model expands to bigger angle, make the effect of closeer sweep trace projection to the target bar code so can produce, help reading of target bar code.
As mentioned above, the value on the true tool industry of the utility model, and have obvious effect than prior art and promote, so the present invention had accorded with the important document of patent already.
Claims (3)
1, a kind of bar code reading device polygonal mirror with arc-shaped curved surface, it is disposed in the bar code reading device that comprises pedestal, LASER Light Source projective structure and circular row reflector group, polygonal mirror is positioned at the position of the LASER Light Source projecting direction of LASER Light Source projective structure, configuration circular row reflector group between polygonal mirror and the LASER Light Source projective structure; The bottom of polygonal mirror is connected with the motor that drives the polygonal mirror rotation; Each mirror surface that it is characterized in that polygonal mirror is an arc-shaped curved surface.
2, the bar code reading device polygonal mirror with arc-shaped curved surface according to claim 1 is characterized in that described polygonal mirror has the mirror surface more than at least three.
3, the bar code reading device polygonal mirror with arc-shaped curved surface according to claim 1, the surface that it is characterized in that described each mirror surface are to form arc-shaped curved surface in the mode that optical reflectors is coated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520000223 CN2779493Y (en) | 2005-01-05 | 2005-01-05 | Multi-surface reflector having arc surface for bar code reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520000223 CN2779493Y (en) | 2005-01-05 | 2005-01-05 | Multi-surface reflector having arc surface for bar code reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2779493Y true CN2779493Y (en) | 2006-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520000223 Expired - Lifetime CN2779493Y (en) | 2005-01-05 | 2005-01-05 | Multi-surface reflector having arc surface for bar code reader |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568612A (en) * | 2019-09-26 | 2019-12-13 | 威海北洋电气集团股份有限公司北京分公司 | Rotary reflection head and laser scanning device |
| CN110939918A (en) * | 2018-09-25 | 2020-03-31 | 株式会社小糸制作所 | Light irradiation device |
| CN112880976A (en) * | 2021-01-14 | 2021-06-01 | 歌尔股份有限公司 | Incident beam angle adjusting device and method for manufacturing reflecting device |
| CN114460560A (en) * | 2021-12-24 | 2022-05-10 | 宁波永新光学股份有限公司 | Surface mount type multi-surface rotating mirror scanning system and manufacturing method thereof |
-
2005
- 2005-01-05 CN CN 200520000223 patent/CN2779493Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939918A (en) * | 2018-09-25 | 2020-03-31 | 株式会社小糸制作所 | Light irradiation device |
| CN110939918B (en) * | 2018-09-25 | 2022-05-10 | 株式会社小糸制作所 | Light irradiation device |
| CN110568612A (en) * | 2019-09-26 | 2019-12-13 | 威海北洋电气集团股份有限公司北京分公司 | Rotary reflection head and laser scanning device |
| CN112880976A (en) * | 2021-01-14 | 2021-06-01 | 歌尔股份有限公司 | Incident beam angle adjusting device and method for manufacturing reflecting device |
| CN114460560A (en) * | 2021-12-24 | 2022-05-10 | 宁波永新光学股份有限公司 | Surface mount type multi-surface rotating mirror scanning system and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150105 Granted publication date: 20060510 |