CN104778433A - Laser scanner - Google Patents
Laser scanner Download PDFInfo
- Publication number
- CN104778433A CN104778433A CN201410030396.4A CN201410030396A CN104778433A CN 104778433 A CN104778433 A CN 104778433A CN 201410030396 A CN201410030396 A CN 201410030396A CN 104778433 A CN104778433 A CN 104778433A
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- China
- Prior art keywords
- light
- scanner
- mirror
- laser
- photodiode
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- Mechanical Optical Scanning Systems (AREA)
Abstract
The invention discloses a laser scanner. A photosensitive diode and an oscillating mirror are attached to a flexible circuit board, can be arranged at left and right positions as shown in the Fig . 3, and can also be arranged at upper and lower positions as shown in the Fig . 4. The flexible circuit board is fixed on a bracket. A laser diode is further fixed on the bracket. When the scanner works, laser emitted by the laser diode becomes linear under the oscillation of the oscillating mirror, a part of the laser reflected from an object returns to the surface of the photosensitive diode near the oscillating mirror along an original path, the intensity change of the returning light is converted into an electrical signal by the photosensitive diode, and the electrical signal is transmitted to a main board through a circuit on the flexible circuit board, and is decoded. A light path used for the scanner is simpler than a light path of the conventional scanner on the market, and a complex reflective mirror is eliminated, so that the raw material cost is low. During production, the positions of the optical devices are not required to be debugged, so that a machining process is simple and reliable. The number of reflection times is reduced, so that the light intensity attenuation of the returning light is low, and the returning light can be more easily received by the photosensitive diode.
Description
Technical field
A kind of laser scanner, its effect is scanning barcode, measures dimension of object etc.The present invention relates generally to the bright dipping of laser scanner and the structure of light echo reception.
Background technology
The laser scanner bright dipping used and the structure receiving light, has 2 kinds usually in the market.
The first is as Fig. 1, uses laser diode to send laser, and by polygonal mirror reflects laser on pendulum mirror, swinging of pendulum mirror becomes light into wire.Light is beaten on object, and a part of reflected light turns back on pendulum mirror along Yuan Lu, and reflexes to the mirror surface of arc by pendulum mirror, and catoptron on photodiode, carries out the light collection collected photosensitive.
The second, as Fig. 2, uses laser diode to send laser, and light is got on pendulum mirror through the circular hole in the middle of catoptron, and swinging of pendulum mirror becomes light into wire.Light is beaten on object, and a part of reflected light turns back on pendulum mirror along Yuan Lu, and reflexes to the mirror surface of arc by pendulum mirror, and catoptron on photodiode, carries out the light collection collected photosensitive.
Two kinds of modes only have some difference of luminous existence, and it is all reflective on photodiode by a cambered surface reflective mirror for receiving light.These two kinds have a common shortcoming, and be exactly that relative positional accuracy between 4 devices requires higher, need when production ceaselessly to debug relative position, efficiency is very low.Reflective mirror cost is also higher simultaneously.
The present invention uses simpler structure, and eliminate cambered surface reflective mirror, light path is simpler.Light echo decreases 2 reflectings surface, and light intensity decay is few.Produce and do not need debugging, cost is low, and efficiency is high.Device is less, and the cost of material is low.
Summary of the invention
Laser scanner in the past, as depicted in figs. 1 and 2, receive photosystem is all that just arrive photodiode, the energy attenuation of light is larger by pendulum mirror and arc-shaped reflecting mirror 2 secondary reflection to structural design.
New invention have employed the structure as Fig. 3 or Fig. 4, and light sends from laser diode, directly beats on pendulum mirror.Wire is become by pendulum mirror.Light is beaten on object, and a part of reflected light directly turns back on the photodiode on pendulum mirror side along former road, and photosensitive.New invention has following advantage: 1, receives when photosystem light returns and decreases 2 secondary reflections, makes the light intensity that receives higher.2, decrease a complicated catoptron, material cost reduces.3, the relative position between light device does not need adjustment, and production efficiency is higher, and producing cost is low.4, pendulum mirror and the relative position of photodiode can be left and right or up and down, structural design degree of freedom is high.
Accompanying drawing explanation
Fig. 1 common laser scanner assembly drawing
Fig. 2 common laser scanner assembly drawing
Fig. 3 new invention laser scanner assembly drawing
Fig. 4 new invention laser scanner assembly drawing
Embodiment
1. will put mirror and photodiode paster (FPC) in flexible circuit board.
The relative position of pendulum mirror and photodiode can be tiled configuration shown in Fig. 3, also can be the up-down structure shown in Fig. 4.
2. light emitting diode is fixed on support.
3. flexible circuit board is fixed on support.
Claims (6)
1. a new pattern laser scanner, is that it has been directly installed on the photodiode receiving light in the swing arm of pendulum mirror, swings together with pendulum mirror.And eliminate the reflective mirror receiving light.
2. describe according to claim 1, scanner eliminates the reflex reflector lens receiving light, reduces material cost.
3. describe according to claim 1, pendulum mirror and photodiode are directly installed in flexible circuit board, and produce simple, consistance is good.
4. describe according to claim 1, photodiode directly receives light, decreases 2 secondary reflection chances than traditional structure light, and make the light that receives stronger, contrast is high, easily decodes.
5. describe according to claim 1, the relative position between photodiode and pendulum mirror can be up-down structure, also can be tiled configuration, facilitate the structural design of scanner like this, more save space.
6. describe according to claim 1, eliminate reflective mirror, make light path more simple, do not need debugging repeatedly when production, efficiency is higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410030396.4A CN104778433A (en) | 2014-01-14 | 2014-01-14 | Laser scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410030396.4A CN104778433A (en) | 2014-01-14 | 2014-01-14 | Laser scanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104778433A true CN104778433A (en) | 2015-07-15 |
Family
ID=53619887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410030396.4A Pending CN104778433A (en) | 2014-01-14 | 2014-01-14 | Laser scanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104778433A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107480568A (en) * | 2017-07-28 | 2017-12-15 | 广州涉川科技有限公司 | A kind of device of new pattern laser identification bar code |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1551150A (en) * | 2003-02-26 | 2004-12-01 | ���ǵ�����ʽ���� | Optical pickup apparatus |
| CN101853372A (en) * | 2009-03-31 | 2010-10-06 | 上海先达企业发展有限公司 | Device for enlarging single scan range of bar code |
| CN201653553U (en) * | 2010-01-06 | 2010-11-24 | 中国电子科技集团公司第十一研究所 | Infrared panoramic imaging device |
| CN201955798U (en) * | 2011-02-28 | 2011-08-31 | 西安富立叶微电子有限责任公司 | Laser barcode scanning and reading device |
| CN103036618A (en) * | 2012-12-13 | 2013-04-10 | 深圳市易飞扬通信技术有限公司 | Light transmit-receive element and sealing method thereof |
-
2014
- 2014-01-14 CN CN201410030396.4A patent/CN104778433A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1551150A (en) * | 2003-02-26 | 2004-12-01 | ���ǵ�����ʽ���� | Optical pickup apparatus |
| CN101853372A (en) * | 2009-03-31 | 2010-10-06 | 上海先达企业发展有限公司 | Device for enlarging single scan range of bar code |
| CN201653553U (en) * | 2010-01-06 | 2010-11-24 | 中国电子科技集团公司第十一研究所 | Infrared panoramic imaging device |
| CN201955798U (en) * | 2011-02-28 | 2011-08-31 | 西安富立叶微电子有限责任公司 | Laser barcode scanning and reading device |
| CN103036618A (en) * | 2012-12-13 | 2013-04-10 | 深圳市易飞扬通信技术有限公司 | Light transmit-receive element and sealing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107480568A (en) * | 2017-07-28 | 2017-12-15 | 广州涉川科技有限公司 | A kind of device of new pattern laser identification bar code |
| CN107480568B (en) * | 2017-07-28 | 2020-09-15 | 广州涉川科技有限公司 | Device of laser identification bar code |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150715 |