CN203773147U - Optical path system of one-dimensional single-line laser bar code reader - Google Patents
Optical path system of one-dimensional single-line laser bar code reader Download PDFInfo
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- CN203773147U CN203773147U CN201420084978.6U CN201420084978U CN203773147U CN 203773147 U CN203773147 U CN 203773147U CN 201420084978 U CN201420084978 U CN 201420084978U CN 203773147 U CN203773147 U CN 203773147U
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- bar code
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- 238000007598 dipping method Methods 0.000 claims description 19
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- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract 2
- 230000011514 reflex Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses an optical path system of a one-dimensional single-line laser bar code reader. The optical path system comprises a laser light-emitting apparatus, an optical concave-surface condenser, a photoelectric receiving sensor, a fixed reflector and an oscillating mirror mechanism. An opening hole is disposed in the center of the optical concave-surface condenser. A light extraction optical path flat mirror is disposed on the oscillating mirror mechanism. The laser light-emitting device is disposed in the rear of the optical concave-surface condenser. A laser light goes through the opening hole in the center of the optical concave-surface condenser and then is reflected by the flat mirror on the oscillating mirror mechanism onto a one-directional bar code. The fixed reflector is disposed nearby the light extraction optical path flat mirror. A laser signal reflected from the one-dimensional bar code is reflected to the optical concave-surface condenser by the fixed reflector, and then is converged by the optical concave-surface condenser to the photoelectric receiving sensor to complete conversion of a photoelectric signal. The optical path system can reduce demands of laser tube emission power by the bar code reader and helps to save material cost of optical devices, can reduce the overall power consumption of the bar code reader, decrease cost and improve production and operation efficiency.
Description
Technical field
The utility model relates to bar-code reader research field, particularly a kind of light path system of one dimension single line laser bar-code reader.
Background technology
One dimension single line laser bar-code reader is for automatically understanding the bar code that is printed on commodity or object.At present, because cost performance is high, easy to use, its be widely used in commodity identification, production workpiece identification and reckon by the piece, in the various production service environments such as information for hospital collection.
At present, the light channel structure of one dimension single line laser bar-code reader on market (with reference to Chinese invention patent number: 200410051150) basic comprising as shown in Figure 1, comprising:
The laser light emitting device of (1) wavelength 650nm left and right, comprises lasing fluorescence diode 1, optical alignment mirror 2 and necessary mechanical fixed component.
(2) stationary optics, it consists of two combination of devices below:
A. optics concave surface collecting lens 3, for converging to photoelectric receiving transducer 5 bar code reflected light signal.
B. fixed pan catoptron 4, are used for changing the laser optical path direction of lasing fluorescence diode 1 transmitting, are generally the central authorities that are embedded in optics concave surface collecting lens 3.
(3) pendulum illuminating apparatus structures with level crossing 6, this mechanism is by solenoid and magnet drives, and object is to swing level crossing 6 mounted thereto, and these parts have two functions:
A. that above-mentioned (1) is produced and in above-mentioned (2) are described the laser rays after the reflection of fixed pan catoptron according to different angle (being driven angle temporal evolution by pendulum illuminating apparatus structure), periodically reflect away.
B. the laser signal reflecting from bar code is reflexed to optics concave surface collecting lens 3.
(4) fixing photoelectric receiving transducers 5, receive the bar code reflected signal that optics concave surface laser mirror 3 converges, and light signal are converted to electric signal.
In theory, above-mentioned light channel structure can be decomposed into Laser output light path (with reference to figure 2) and bar code reflected signal receiving light path two parts (with reference to figure 3).
As shown in phantom in Figure 2, Laser output light path is: laser (approximate directional light) sends from lasing fluorescence diode 1, through optical alignment mirror 2 plane mirror 4 that is fixed, reflex on the level crossing 6 on pendulum illuminating apparatus structure, finally by the level crossing 6 on pendulum illuminating apparatus structure, reflect away and form an one dimension laser beam.So laser is by being just irradiated on bar code after twice flat mirror reflects.The every many flat mirror reflects of laser, how power all can once be decayed, so this scheme has higher requirement to laser power and cost.
As shown in Fig. 3 dotted line, bar code reflected signal receiving light path is: laser is reflected by bar code, first by the level crossing 6 on pendulum illuminating apparatus structure, reflexed to optics concave surface collecting lens 3, then by optics concave surface collecting lens 3, reflection laser signals are converged to fixedly to photoelectric receiving transducer 5(photoelectric receiving transducer and be fixed near the focus of concave surface collecting lens).So bar code reflected signal is also just to be received by photoelectric receiving transducer through two secondary reflections (being respectively flat mirror reflects and the concave mirror reflection of pendulum illuminating apparatus structure), puts the level crossing of illuminating apparatus structure and does not fix, while be to swing to reflect simultaneously.Because bar code reflected signal is conventionally very faint, and the level crossing area in bar code reflected signal receiving light path is larger in theory, so the signal that photoelectric receiving transducer receives is just stronger, while using actual, often the level crossing area in bar code reflected signal receiving light path is proposed to high requirement.The bar code reflected signal receiving light path midplane mirror reflection function of one dimension single line laser bar-code reader is to be realized (simultaneously by the level crossing on pendulum illuminating apparatus structure at present, level crossing on pendulum illuminating apparatus structure has also been born in bright dipping light path the function of flat mirror reflects for the second time), because bar code reflected signal receiving light path requires the area of plane of reflection mirror to be the bigger the better, but level crossing area is larger, the load of pendulum illuminating apparatus structure is just larger, and the driving power that causes putting illuminating apparatus structure also can be corresponding larger.
Therefore, seek a kind of low cost, low-power consumption and the light path system that is easy to build has extremely strong practical value.
Utility model content
Fundamental purpose of the present utility model is that the shortcoming that overcomes prior art is with not enough, a kind of light path system of one dimension single line laser bar-code reader is provided, this system can reduce the demand of Emission Lasers tube power and save optical device material cost, can reduce the Overall Power Consumption of bar-code reader, reduce cost, improve and produce and work efficiency.
The purpose of this utility model realizes by following technical scheme: a kind of light path system of one dimension single line laser bar-code reader, comprise laser light emitting device, optics concave surface collecting lens, photoelectric receiving transducer and pendulum illuminating apparatus structure, there is perforate at the center of optics concave surface collecting lens, pendulum illuminating apparatus structure is provided with a level crossing, laser light emitting device be arranged on optics concave surface collecting lens after; Laser from the center pit of above-mentioned optics concave surface collecting lens by directly by the flat mirror reflects on pendulum illuminating apparatus structure to bar code; The flat mirror reflects of the laser signal reflecting from bar code on pendulum illuminating apparatus structure is to optics concave surface collecting lens.
A kind of light path system of one dimension single line laser bar-code reader, comprise laser light emitting device, optics concave surface collecting lens, photoelectric receiving transducer, a stationary mirror and pendulum illuminating apparatus structure, there is perforate at the center of optics concave surface collecting lens, pendulum illuminating apparatus structure is provided with bright dipping light path plane mirror, laser light emitting device be arranged on optics concave surface collecting lens after; Laser from the center pit of above-mentioned optics concave surface collecting lens by directly by the bright dipping light path plane mirror on pendulum illuminating apparatus structure, reflexed on bar code; Stationary mirror is for reflexing to optics concave surface collecting lens by the laser signal reflecting from bar code.
Preferably, described stationary mirror is arranged on bright dipping light path plane mirror around.For example can its rear or below or above or left or right-hand or surrounding.
Preferably, the area of described stationary mirror is greater than the area of bright dipping light path plane mirror.Because the bright dipping light path plane mirror on pendulum illuminating apparatus structure is no longer born the reflection function in bar code reflected signal receiving light path, it is very little that the relatively traditional one dimension single line laser of the area bar-code reader of bright dipping light path plane mirror can be done, the load that is to say pendulum illuminating apparatus structure significantly reduces, driving power to pendulum illuminating apparatus structure requires just obviously to reduce, and therefore can reduce the overall power of one dimension single line laser bar-code reader.
Preferably, described stationary mirror is level crossing or concave mirror or the combined lens that has reflection function.
Compared with prior art, tool has the following advantages and beneficial effect the utility model:
1, the utility model is by the center drilling at optics concave surface collecting lens, laser only need can be irradiated on bar code after a flat mirror reflects, due to every many flat mirror reflects, how laser power all can once be decayed, so the utility model has reduced the requirement to laser diode power, and can save optical material cost (reduce a time flat mirror reflects, just can physically reduce by a level crossing).
2, the utility model is no longer realized bright dipping light path plane mirror reflection function and bar code reflected signal receiving light path flat mirror reflects function with same physical device, but realize with two level crossings, bright dipping light path plane mirror is installed on pendulum illuminating apparatus structure, bar code reflected signal receiving light path catoptron is fixed, be arranged on bright dipping light path plane mirror around, by pendulum illuminating apparatus structure, do not driven, thereby reduced the load of putting illuminating apparatus structure, reduce Overall Power Consumption.
Accompanying drawing explanation
Fig. 1 is traditional one dimension single line laser bar-code reader index path;
Fig. 2 is traditional one dimension single line laser bar-code reader bright dipping index path;
Fig. 3 is traditional one dimension single line laser bar-code reader bar code reflected signal receiving light path figure;
Fig. 4 is the present embodiment 1 index path;
Fig. 5 is the present embodiment 2 index paths.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment 1
As shown in Figure 4, the light path system of the present embodiment one dimension single line laser bar-code reader, comprises lasing fluorescence diode 1, optical alignment mirror 2, optics concave surface collecting lens 31, photoelectric receiving transducer 5 and pendulum illuminating apparatus structure.On pendulum illuminating apparatus structure, be provided with a level crossing 6.Dotted line in Fig. 4 represents Laser output light path, and dotted line represents bar code reflected signal receiving light path.
In the present embodiment, there is perforate at optics concave surface collecting lens 31 center, lasing fluorescence diode 1, optical alignment mirror 2 be arranged on optics concave surface collecting lens 31 after.As shown in phantom in FIG., laser from the center pit of above-mentioned optics concave surface collecting lens 31 by directly by the level crossing 6 on pendulum illuminating apparatus structure, reflexed on bar code, the level crossing 6 of the laser signal reflecting from bar code on pendulum illuminating apparatus structure reflexes on optics concave surface collecting lens 31.Finally by optics concave lens 31, converge to the conversion that completes photosignal on photoelectric receiving transducer 5.
The present embodiment is by the center drilling at optics concave surface collecting lens, and laser only need can be irradiated on bar code after a flat mirror reflects, thereby has reduced the requirement to laser diode power, and can save optical material cost.
Embodiment 2
The present embodiment except following characteristics other structures with embodiment 1:
As shown in Figure 5, the light path system of the present embodiment one dimension single line laser bar-code reader, comprises bright dipping light path plane mirror 6, stationary mirror 41, photoelectric receiving transducer 5 on lasing fluorescence diode 1, optical alignment mirror 2, optics concave surface collecting lens 31, pendulum illuminating apparatus structure.Dotted line in Fig. 5 represents Laser output light path, and dotted line represents bar code reflected signal receiving light path.
In the present embodiment, identical with embodiment 1, there is perforate at optics concave surface collecting lens 31 center, lasing fluorescence diode 1, optical alignment mirror 2 be arranged on optics concave surface collecting lens 31 after.Laser from the center pit of above-mentioned optics concave surface collecting lens 31 by directly by the bright dipping light path plane mirror 6 on pendulum illuminating apparatus structure, reflexed on bar code.
As different from Example 1, be also provided with a stationary mirror 41 below bright dipping light path plane mirror 6, the laser signal reflecting from bar code reflexes on optics concave surface collecting lens 31 through this fixed pan catoptron 41.Finally by optics concave lens 31, converge to the conversion that completes photosignal on photoelectric receiving transducer 5.
In actual applications, described stationary mirror is for the laser signal reflecting on bar code is reflexed to optics concave surface collecting lens, so area can be larger, can be more than the twice of bright dipping light path plane mirror area.Because stationary mirror need not be arranged on pendulum illuminating apparatus structure, therefore can greatly reduce the overall power of one dimension single line laser bar-code reader simultaneously.
When practical application, stationary mirror is level crossing or concave mirror or the combined lens that has reflection function.
Above-described embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (5)
1. the light path system of an one dimension single line laser bar-code reader, it is characterized in that, comprise laser light emitting device, optics concave surface collecting lens, photoelectric receiving transducer and pendulum illuminating apparatus structure, there is perforate at the center of optics concave surface collecting lens, pendulum illuminating apparatus structure is provided with a level crossing, laser light emitting device be arranged on optics concave surface collecting lens after; Laser from the center pit of above-mentioned optics concave surface collecting lens by directly by the flat mirror reflects on pendulum illuminating apparatus structure to bar code; The flat mirror reflects of the laser signal reflecting from bar code on pendulum illuminating apparatus structure is to optics concave surface collecting lens.
2. the light path system of an one dimension single line laser bar-code reader, it is characterized in that, comprise laser light emitting device, optics concave surface collecting lens, photoelectric receiving transducer, a stationary mirror and pendulum illuminating apparatus structure, there is perforate at the center of optics concave surface collecting lens, pendulum illuminating apparatus structure is provided with bright dipping light path plane mirror, laser light emitting device be arranged on optics concave surface collecting lens after; Laser from the center pit of above-mentioned optics concave surface collecting lens by directly by the bright dipping light path plane mirror on pendulum illuminating apparatus structure, reflexed on bar code; Stationary mirror is for reflexing to optics concave surface collecting lens by the laser signal reflecting from bar code.
3. the light path system of one dimension single line laser bar-code reader according to claim 2, is characterized in that, described stationary mirror is arranged on bright dipping light path plane mirror around.
4. the light path system of one dimension single line laser bar-code reader according to claim 2, is characterized in that, the area of described stationary mirror is greater than the area of bright dipping light path plane mirror.
5. the light path system of one dimension single line laser bar-code reader according to claim 2, is characterized in that, described stationary mirror is level crossing or concave mirror or the combined lens that has reflection function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420084978.6U CN203773147U (en) | 2014-02-26 | 2014-02-26 | Optical path system of one-dimensional single-line laser bar code reader |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420084978.6U CN203773147U (en) | 2014-02-26 | 2014-02-26 | Optical path system of one-dimensional single-line laser bar code reader |
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| CN203773147U true CN203773147U (en) | 2014-08-13 |
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| CN201420084978.6U Expired - Lifetime CN203773147U (en) | 2014-02-26 | 2014-02-26 | Optical path system of one-dimensional single-line laser bar code reader |
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Cited By (3)
| 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 |
| CN111157495A (en) * | 2019-12-02 | 2020-05-15 | 郑州迈迪迅医疗科技有限公司 | Fluorescent reagent detection device and detection method thereof |
| CN111680533A (en) * | 2020-06-02 | 2020-09-18 | 上海浩创亘永科技有限公司 | Scanner, wearable intelligent device and scanning system |
-
2014
- 2014-02-26 CN CN201420084978.6U patent/CN203773147U/en not_active Expired - Lifetime
Cited By (4)
| 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 |
| CN111157495A (en) * | 2019-12-02 | 2020-05-15 | 郑州迈迪迅医疗科技有限公司 | Fluorescent reagent detection device and detection method thereof |
| CN111680533A (en) * | 2020-06-02 | 2020-09-18 | 上海浩创亘永科技有限公司 | Scanner, wearable intelligent device and scanning system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |