CN2518122Y - Optical scanner - Google Patents
Optical scanner Download PDFInfo
- Publication number
- CN2518122Y CN2518122Y CN 01275212 CN01275212U CN2518122Y CN 2518122 Y CN2518122 Y CN 2518122Y CN 01275212 CN01275212 CN 01275212 CN 01275212 U CN01275212 U CN 01275212U CN 2518122 Y CN2518122 Y CN 2518122Y
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- CN
- China
- Prior art keywords
- mirror
- light source
- concave
- optical scanner
- concave mirror
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses an optical scanning device, and comprises a light source part, an optical scanning part and an optical receiving and photoelectric conversion part, wherein, the optical scanning part consists of a composite lens and a pointer mirror arranged basically corresponding to the composite lens, and the composite lens consists of a concave mirror and a light source reflecting mirror, the light source reflecting mirror is arranged on the concave surface in the concave and deviating the center, and form an angle with 45 degrees with the irradiation light sent out by the light source part; and the focus of the concave mirror is positioned above the optical receiving and photoelectric conversion part. The pointer mirror adopts a flat mirror arranged on a swinging arm, the swinging arm swings along a certain angle, the equilibrium position of the swinging arm is parallel to the light source reflecting mirror, and three mutually assembled reflecting mirrors substitute the lens group and the prism in the prior art. The structure is simple, as well as the cost is low.
Description
Technical field
The utility model relates to laser scanner, relates in particular to the optical scanner in the laser scanner.
Background technology
The laser scanner that generally uses adopts semiconductor laser as light source more at present, the light that light source is sent by scanning mechanism back and forth shines on scanned object, and the reflection ray of scanned object carries out the datumization processing again after optics reception and opto-electronic conversion mechanism, and it is bar code reader that its typical case uses.Optical scanner is the important component part of laser scanner, it comprises that the Lights section, optical scanning part and optics receive and photoelectric conversion section, the structure that existing optical scanner adopts usually is that optical scanning partly comprises a lens unit, be used for reflection ray is assembled, image in the image sensor unit of optics reception and photoelectric conversion section, the final realization is transformed into digital signal by picture intelligence.Lens have certain loss to light when adopting this structure, thereby transducer sensitivity had relatively high expectations, and lens are to the imaging that diffuses, can not form distinct image, scanning accuracy is difficult to improve, moreover because institute becomes real image at least beyond one times of focal length of lens, so that this device volume is bigger.Be to improve imaging definition, people are provided with lens combination and prism in device, because light path is through repeatedly reflection and refraction, complex structure is controlled loaded down with trivial detailsly, and difficulty of processing is higher.
Summary of the invention
The purpose of this utility model is to provide the optical scanner that a kind of imaging is clear and compact conformation is simple, with low cost.
For achieving the above object, the technical solution adopted in the utility model is: a kind of optical scanner, comprise the Lights section, optical scanning part and optics receive and photoelectric conversion section, wherein the optical scanning part is formed by combined lens with the pendulum mirror that combined lens is oppositely arranged substantially, combined lens is made up of concave mirror and light source reflector, the irradiation light angle at 45 that light source reflector is arranged in the concave mirror on the off-centered concave surface and sends with described the Lights section, the focus of concave mirror is positioned on described optics reception and the photoelectric conversion section, described pendulum mirror is the level crossing that is arranged in the swing arm, swing arm is along certain pivot angle swing, and the equilibrium position of pendulum mirror is parallel with light source reflector.
After adopting said structure, the irradiates light that the Lights section sends through light source reflector, the pendulum mirror as for scanned object, and reflected light is through putting mirror to concave mirror, to diffuse by concave mirror and to focus on optics and receive on the photosensitive device with photoelectric conversion section, the scanning ray of irradiates light is realized by the swing of pendulum mirror, this programme replaces lens combination of the prior art and prism with three catoptrons of mutual combination, and is simple in structure and with low cost.
Description of drawings
Fig. 1 is the three-dimensional structure diagram of a kind of embodiment of the utility model.
Fig. 2 is an embodiment duty index path shown in Figure 1.
Fig. 3 is the three-dimensional structure diagram of concave mirror in the embodiment shown in Figure 1.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
With reference to Fig. 1, Fig. 2, shown in optical scanner, comprise the Lights section 1, optical scanning part and optics receive and photoelectric conversion section 2, wherein the optical scanning part is formed by combined lens with the pendulum mirror 5 that combined lens is oppositely arranged substantially, combined lens is made up of concave mirror 3 and light source reflector 4, the irradiation light angle at 45 that light source reflector 4 is arranged in the concave mirror 3 on the off-centered concave surface and sends with described the Lights section 1, the focus of concave mirror 3 is positioned on described optics reception and the photoelectric conversion section 2, described pendulum mirror 5 is for being arranged at the level crossing in the swing arm 6, swing arm 6 is along certain pivot angle swing, and the equilibrium position of pendulum mirror 5 is parallel with light source reflector 4.The tilting mechanism of swing arm 6 can adopt motor-driven physical construction, also can adopt electromagnetic shock mechanism.Promptly form light path as shown in Figure 2 under this device busy state, the irradiates light that the Lights section 1 sends through twice reflection of light source reflector 4 and pendulum mirror 5 as for scanned object, and reflected light arrives concave mirror 3 through pendulum mirror 5, and will be diffused by concave mirror 3 focuses on the photosensitive device of optics reception and photoelectric conversion section 2.
In concrete the enforcement, the shape of described concave mirror 3 can be sphere, parabola or hyperboloid etc.The pivot angle of swing arm 6 can be chosen between 20 ° to 30 °.
In Fig. 3, the frame of concave mirror 3 is essentially identical square with pendulum mirror 5 sizes, and light source reflector 4 is arranged on the concave surface of concave mirror 3, because of it only is used for the laser beam that reflection source part 1 is sent, so area can be very little, can be in concrete the enforcement smaller or equal to 5mm * 5mm.
Claims (6)
1, a kind of optical scanner, comprise the Lights section, optical scanning part and optics receive and photoelectric conversion section, it is characterized in that: described optical scanning part is formed by combined lens with the pendulum mirror that combined lens is oppositely arranged substantially, combined lens is made up of concave mirror and light source reflector, the irradiation light angle at 45 that light source reflector is arranged in the concave mirror on the off-centered concave surface and sends with described the Lights section, the focus of concave mirror is positioned on described optics reception and the photoelectric conversion section, described pendulum mirror is the level crossing that is arranged in the swing arm, swing arm is along certain pivot angle swing, and the equilibrium position of pendulum mirror is parallel with light source reflector.
2, optical scanner as claimed in claim 1 is characterized in that: the concave surface of described concave mirror is a sphere.
3, optical scanner as claimed in claim 1 is characterized in that: the concave surface of described concave mirror is for parabolic.
4, optical scanner as claimed in claim 1 is characterized in that: the concave surface of described concave mirror is a hyperboloid.
5, optical scanner as claimed in claim 1 is characterized in that: the area of described light source reflector is smaller or equal to 5mm * 5mm.
6, optical scanner as claimed in claim 1 is characterized in that: the pivot angle of described swing arm is between 20 ° to 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01275212 CN2518122Y (en) | 2001-11-28 | 2001-11-28 | Optical scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01275212 CN2518122Y (en) | 2001-11-28 | 2001-11-28 | Optical scanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2518122Y true CN2518122Y (en) | 2002-10-23 |
Family
ID=33679680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01275212 Expired - Lifetime CN2518122Y (en) | 2001-11-28 | 2001-11-28 | Optical scanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2518122Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799852A (en) * | 2012-08-07 | 2012-11-28 | 深圳市民德电子科技有限公司 | Bar code identification device |
| CN104793334A (en) * | 2015-04-02 | 2015-07-22 | 同济大学 | Cascading coarse-fine data coupling optical scanning device |
| CN104951725A (en) * | 2015-06-19 | 2015-09-30 | 四川飞阳科技有限公司 | Laser barcode scanner and scanning engine thereof |
| CN105467885A (en) * | 2016-01-18 | 2016-04-06 | 上海理工大学 | Automatic human body safety detector |
-
2001
- 2001-11-28 CN CN 01275212 patent/CN2518122Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799852A (en) * | 2012-08-07 | 2012-11-28 | 深圳市民德电子科技有限公司 | Bar code identification device |
| CN104793334A (en) * | 2015-04-02 | 2015-07-22 | 同济大学 | Cascading coarse-fine data coupling optical scanning device |
| CN104951725A (en) * | 2015-06-19 | 2015-09-30 | 四川飞阳科技有限公司 | Laser barcode scanner and scanning engine thereof |
| CN105467885A (en) * | 2016-01-18 | 2016-04-06 | 上海理工大学 | Automatic human body safety detector |
| CN105467885B (en) * | 2016-01-18 | 2019-01-11 | 上海理工大学 | Full automatic human body safety detector |
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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: 20111128 Granted publication date: 20021023 |