CN111047798B - Linear spot lens, linear optical device and pos machine optical scanning system - Google Patents
Linear spot lens, linear optical device and pos machine optical scanning system Download PDFInfo
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- CN111047798B CN111047798B CN201911201773.5A CN201911201773A CN111047798B CN 111047798 B CN111047798 B CN 111047798B CN 201911201773 A CN201911201773 A CN 201911201773A CN 111047798 B CN111047798 B CN 111047798B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 38
- 239000011324 bead Substances 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000002474 experimental method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/0018—Constructional details, e.g. of drawer, printing means, input means
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/0036—Checkout procedures
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/0036—Checkout procedures
- G07G1/0045—Checkout procedures with a code reader for reading of an identifying code of the article to be registered, e.g. barcode reader or radio-frequency identity [RFID] reader
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- Optics & Photonics (AREA)
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Abstract
The invention discloses a linear spot lens, a linear optical device and a pos machine optical scanning system. The linear facula lens comprises a lens body, wherein the lens body is provided with an incident surface and an emergent surface which are oppositely arranged, and the incident surface is planar; the two ends of the emergent surface are convex, the middle of the emergent surface is concave, so that two opposite convex ends and two opposite concave ends are formed on the emergent surface, and the ratio of the curvature radius of the convex ends to the curvature radius of the concave ends is 3-5: 9-11; the linear optical device comprises a lamp bead, a light-blocking window and the linear light spot lens which are arranged in sequence; the pos machine optical scanning system comprises the linear optical device. The linear facula lens has simple structure and lower cost.
Description
Technical Field
The invention relates to the technical field of optical systems, in particular to a linear facula lens, a linear optical device and a pos machine optical scanning system.
Background
Electronic payment has become the mainstream of consumer payment, and pos is applied more and more widely as a main electronic payment method. When the pos machine is used, the two-dimensional code can be quickly aligned and scanned only by aligning a positioning light spot with the two-dimensional code. The alignment of linear light spots is also a common scheme, but the current linear light spots are generally formed by adopting a lens combination, so that the optical path of an optical system is complicated and the cost is high.
Disclosure of Invention
Therefore, the invention needs to provide a linear spot lens with simple structure and low cost.
The invention also provides a linear optical device.
The invention also provides an optical scanning system of the pos machine.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a linear facula lens comprises a lens body, wherein the lens body is provided with an incident surface and an emergent surface which are oppositely arranged, and the incident surface is planar; the two ends of the emergent surface are convex, the middle of the emergent surface is concave, so that two opposite convex ends and two opposite concave ends are formed on the emergent surface, and the ratio of the curvature radius of the convex ends to the curvature radius of the concave ends is 3-5: 9-11.
According to the linear facula lens, after light is incident through the incident surface, the light is condensed into a narrow line shape through the two convex ends of the emergent surface, the narrow line is elongated through the concave end, the curvature radius of the convex end and the curvature radius of the concave end are set in a specific proportion, so that the light can be elongated in a better proportion, the light loss can be reduced, and long and narrow linear facula with high brightness can be obtained.
In some embodiments, the protruding end forms a bottom surface and a top surface of the lens body, the recessed end forms a side surface of the lens body, and the height of the lens body is greater than the width of the lens body.
In some of these embodiments, the radius of curvature of the convex end is 4.5 mm.
In some embodiments, the radius of curvature of the convex end is 10 mm.
The invention also provides a linear optical device, which comprises a lamp bead, a light blocking component and a linear facula lens which are sequentially arranged, wherein the light blocking component is provided with a light-transmitting window corresponding to the lamp bead; the two ends of the emergent surface are convex, the middle of the emergent surface is concave, so that two opposite convex ends and two opposite concave ends are formed on the emergent surface, and the ratio of the curvature radius of the convex ends to the curvature radius of the concave ends is 3-5: 9-11.
In some embodiments, the protruding end forms a bottom surface and a top surface of the lens body, the recessed end forms a side surface of the lens body, and the height of the lens body is greater than the width of the lens body.
In some of these embodiments, the radius of curvature of the convex end is 4.5 mm.
In some embodiments, the convex end has a radius of curvature of 10 mm.
The invention also provides an optical scanning system of the pos machine, which comprises the linear optical device.
In some embodiments, the pos machine optical scanning system further comprises a housing, the housing is provided with a mounting port, and the linear spot lens is mounted on the mounting port.
Drawings
Fig. 1 is a schematic structural diagram of a linear spot lens according to a first embodiment of the present invention;
fig. 2 is a schematic view of another view angle of the linear spot lens shown in fig. 1;
fig. 3 is a schematic structural diagram of a rectangular light spot emitted by the linear light spot lens in fig. 1 after light blocking;
FIG. 4 is a schematic diagram of the structure of the light spots emitted by the line-type light spot lens shown in FIG. 1;
FIG. 5 is a schematic structural diagram of a linear optical device according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a pos optical scanning system according to a second embodiment of the invention.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following more detailed description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example one
Referring to fig. 1 and 2, the present invention provides a line-type spot lens 100 for forming a line-type spot, which can be applied to an optical system requiring a line-type spot. The line-type spot lens 100 includes a lens body 10, the lens body 10 has an incident surface 20 and an emergent surface 30 which are oppositely arranged, the incident surface 20 is planar, the emergent surface 30 is a deformed aspheric surface, two ends of the emergent surface 30 are convex, and the middle of the emergent surface 30 is concave, so that the emergent surface 30 forms two opposite convex ends 31 and two opposite concave ends 32, the curvature radius of the convex end 31 is smaller than that of the concave end 32, specifically, the ratio of the curvature radius of the convex end 31 to that of the concave end 32 is 3-5: 9-11.
When the linear light spot lens 100 works, referring to fig. 3, the light rays are incident through the incident surface and then condensed into a narrow line shape through the two convex ends of the emergent surface, the narrow line is elongated through the concave end, and the curvature radius of the convex end and the curvature radius of the concave end are set at a specific ratio, so that the light rays can be elongated with a better ratio, and the light ray loss can be reduced, thereby obtaining a long and narrow linear light spot with higher brightness.
The lens body 10 is a cylindrical lens, and is processed to form the linear spot lens 100.
Referring to fig. 1, the size of the protruding end 31 of the exit surface 30 is smaller than the size of the recessed end 32. Thereby forming the lens body 10 with a height greater than the length and width, which is more favorable for forming a longer linear light spot. Specifically, the convex end 31 forms the bottom and top surfaces of the lens body 10, the concave end 32 forms the side surface of the lens body 10, and the height of the lens body 10 is greater than the width of the lens body 10. For example, the height h of the lens body 10 is 7mm to 10mm, and the width a of the lens body 10 is 1mm to 5 mm. The proportion can well adjust the shape of the light rays, and the purpose of obtaining linear light rays is achieved. Of course, the height and width of the lens body 10 may be other ratios, and the above conditions may be satisfied without limitation.
The height h of the lens body 10 used was 8mm, and the width a of the lens body 10 was 3 mm.
On the lens body 10, the convex end 31 forms the bottom surface 11 and the top surface of the lens body 10, the concave end 32 forms the side surface 12 of the lens body 10, and the height of the lens body 10 is larger than the width of the lens body 10. The lens body 10 thus obtained can draw light longer, and can obtain a longer linear light.
The ratio of the radius of curvature of the convex end 31 to the radius of curvature of the concave end 32 is 4-5: 9.5-10.5. By adjusting the radius of curvature of the convex end 31 and the concave end 32 within this range, a narrow linear light can be obtained more easily. For example, the ratio of the radius of curvature of the convex end 31 to the radius of curvature of the concave end 32 is 4.5: 10.
the linear spot lens 100 can be applied to any device requiring linear light, such as pos machine optical system, laser system, etc.
The effect of the linear spot lens 100 is verified through experiments, and the same light source is used to ensure that the light source and the lens maintain the same distance. The table is the ratio of the radius of curvature R1 of the convex end 31 to the radius of curvature R2 of the concave end 32 of the linear spot lens that participated in the experiment and the resulting spot length L and width D and the intensity of the spot.
Watch 1
| R1：R2 | L(mm) | D(mm) | Brightness of light | |
| Test No.) | 4.5：10 | 180 | 9 | Is brighter |
| Test No. two | 3：9 | 185 | 10 | Is brighter |
| Experiment three | 5:9.5 | 176 | 9.5 | Is brighter |
| Experiment four | 3:10.5 | 180 | 8.5 | Is brighter |
| Experiment five | 5:11 | 180 | 10 | Is brighter |
| Test six | 1：10 | 160 | 12 | Is brighter |
| Experiment seven | 1:1 | 150 | 12.5 | Shade at the edge |
| Experiment eight | 2:15 | 166 | 11 | General brightness |
As can be seen from the experiment of table one, the ratio of the radii of curvature of the lenses of examples one to five was maintained at 3 to 5: 9-11, the final emitted light spot is narrow and has better brightness, while the lenses of examples six to eight have a curvature radius ratio outside the above range, and have not good linearity, a shorter length than that of examples one to five, a larger width, and a not good linearity conversion. The linearity of the light rays emitted by the lens is higher.
Example two
Referring to fig. 5, the present embodiment provides a linear optical device 200, which includes a lamp bead 40, a light blocking component 50 and a linear spot lens 100 according to the first embodiment, where the light blocking component 50 is provided with a light-transmitting window 51 corresponding to the lamp bead 40, the linear spot lens 100 includes a lens body 10, the lens body 10 has an incident surface 20 and an emergent surface 30 that are oppositely arranged, the incident surface 20 is planar, the emergent surface 30 is a deformed aspheric surface, two ends of the emergent surface 30 are convex, and the middle of the emergent surface 30 is concave, so that the emergent surface 30 forms two opposite convex ends 31 and two opposite concave ends 32, the curvature radius of the convex end 31 is smaller than the curvature radius of the concave end 32, specifically, the ratio of the curvature radius of the convex end 31 to the curvature radius of the concave end 32 is 3-5: 9-11.
When the linear optical device 200 works, light emitted by the lamp beads 40 is trimmed into a basic rectangular light beam through the light-transmitting window 51, and the rectangular light beam is distributed through the linear light spot lens 100 to finally emit linear light spots.
The distance from the lamp bead 40 to the linear light spot lens 100 affects the length and shape of the light spot finally emitted, but the obtained light is still a linear light spot with a better shape. In this embodiment, the distance from the lamp bead 40 to the linear light spot lens 100 is set to be 10mm-30 mm. Preferably, the distance from the lamp bead 40 to the linear spot lens 100 is set to 10 mm.
EXAMPLE III
Referring to fig. 6, the present embodiment provides an optical scanning system of a pos machine, including the linear optical device 200 according to the second embodiment. That is, the linear optical device 200 according to the second embodiment is applied to a pos machine, and is used as an optical device of the pos machine to condense light rays into linear light spots to be aligned with the two-dimensional code, so that the two-dimensional code is quickly aligned for scanning, and the efficiency of payment scanning is improved.
Further, the pos machine optical scanning system further includes a housing 60, the housing 60 is provided with a mounting port 61, and the line-type spot lens 100 is mounted to the mounting port 61. The line-type spot lens 100 is fixed by the housing 60 so that the line-type spot lens 100 can stably function.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. The linear facula lens is characterized by comprising a lens body, wherein the lens body is provided with an incident surface and an emergent surface which are oppositely arranged, and the incident surface is planar; the two ends of the emergent surface are convex, the middle of the emergent surface is concave, so that two opposite convex ends and two opposite concave ends are formed on the emergent surface, the emergent surface is a deformed aspheric surface, and the ratio of the curvature radius of the convex ends to the curvature radius of the concave ends is 3-5: 9-11, the lens body is used for converting the rectangular light beam into a linear light spot.
2. The line-spot lens of claim 1, wherein the convex ends form a bottom surface and a top surface of the lens body, the concave ends form side surfaces of the lens body, and the height of the lens body is greater than the width of the lens body.
3. The line spot lens of claim 1 wherein the radius of curvature of the convex end is 4.5 mm.
4. The line spot lens of claim 1 or 3 wherein the radius of curvature of the convex end is 10 mm.
5. A linear optical device is characterized by comprising a lamp bead, a light blocking component and a linear facula lens which are sequentially arranged, wherein the light blocking component is provided with a light transmitting window corresponding to the lamp bead, and the light transmitting window is used for obtaining rectangular light; the linear light spot lens comprises a lens body, wherein the lens body is provided with an incident surface and an emergent surface which are oppositely arranged, and the incident surface is planar; the two ends of the emergent surface are convex, the middle of the emergent surface is concave, so that two opposite convex ends and two opposite concave ends are formed on the emergent surface, the emergent surface is a deformed aspheric surface, and the ratio of the curvature radius of the convex ends to the curvature radius of the concave ends is 3-5: 9-11, the lens body is used for converting the rectangular light beam into a linear light spot.
6. The linear optical device according to claim 5, wherein the convex ends form a bottom surface and a top surface of the lens body, the concave ends form side surfaces of the lens body, and the height of the lens body is greater than the width of the lens body.
7. The linear optical device according to claim 5, wherein the convex end has a radius of curvature of 4.5 mm.
8. A linear optical device according to claim 5 or claim 7, in which the convex end has a radius of curvature of 10 mm.
9. A pos machine optical scanning system comprising a linear optical device according to any of claims 5-8.
10. The pos machine optical scanning system of claim 9, further comprising a housing having a mounting port to which the linear spot lens is mounted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911201773.5A CN111047798B (en) | 2019-11-29 | 2019-11-29 | Linear spot lens, linear optical device and pos machine optical scanning system |
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| CN201911201773.5A CN111047798B (en) | 2019-11-29 | 2019-11-29 | Linear spot lens, linear optical device and pos machine optical scanning system |
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| CN111047798A CN111047798A (en) | 2020-04-21 |
| CN111047798B true CN111047798B (en) | 2022-06-14 |
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| CN111708108B (en) * | 2020-06-08 | 2021-11-23 | 江西欧迈斯微电子有限公司 | Projection lens, emission module and electronic equipment |
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| US8366703B2 (en) * | 2008-04-02 | 2013-02-05 | Cutera, Inc. | Fractional scanner for dermatological treatments |
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Effective date of registration: 20240122 Address after: 200000 1-2, 4, 1628 Li Zheng Road, Pudong New Area academy, Shanghai. Patentee after: SHANGHAI QINKUN INFORMATION TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 523000 Zaoyi Industrial Zone, Dongcheng, Dongguan City, Guangdong Province Patentee before: DONGGUAN WANDE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Country or region before: China |