KR200440271Y1 - Lens module - Google Patents

Abstract

The present invention relates to a lens module, wherein the holder base is fixed to the circuit board and has a bottom receiving hole to receive an LED or a sensor on the top flange and the circuit board as a full proof notch; The lens unit is pressure-matched to the top flange and fastened to the full proof for accurate positioning and has a flat protrusion that engages each aperture with a holder base aligned with the LEDs and sensors, and the top cover holds the lens unit at the bottom. Covered on the base and have apertures for receiving the convex portions of each lens.

Lens Module, Holder Base, Lens Unit, Top Cover, Vending Machine

Description

Lens Module {LENS MODULE}

1 is an exploded perspective view of a lens module according to the present invention

FIG. 2 is a corresponding view of FIG. 1 viewed from another angle

3 is a corresponding view of FIG. 1 showing the lens device mounted inside the top flange of the holder base; FIG.

4 is a perspective view of a lens module according to the present invention

5 is an exploded perspective view of a circuit board and a lens module according to the present invention

Figure 6 is a cross-sectional view showing an example of use of the subject innovation in the bill acceptor

7 is an enlarged view of a part of FIG. 6.

8 is a cross-sectional view showing a part of a bill acceptor of the present invention.

9 is a block diagram showing the structure of a security (bank) prover according to the prior art

10 is a configuration diagram showing the arrangement of a linear light source according to the prior art

<Description of the symbols for the main parts of the drawings>

1 holder base 2 lens unit

3: top cover 4: circuit board

5: bill acceptor 6: bills

11: top flange 12: vertical through hole

13 positioning hole 14 mounting portion

15: guide track 16: holding block

17: bottom receiving hole 18: floor mounting rod

21: flat lens base 22: convex portion

23: flat projection 24: positioning pin

31: through hole 32: bottom recess

33: Retention Lug 34: Retention Hole

41: LED 42: sensor

43: mounting hole 44: screw hole

51: banknote delivery passage 52: transfer machine

111: full proof notch 112: positioning rod

161: inclined upper surface 211: protruding block

321 positioning hole

The present invention relates to a lens module, and more particularly, it is used in a bill acceptor for detecting the authenticity of bills (including securities), has a multi-position structure to have a lens device, and precisely located between the holder base and the top cover It is about the lens module.

With the rapid development of technology, living modes are changing. Various vending machines (card dispensers, ticket vending machines, currency exchangers, etc.) are used everywhere to sell various products without employees. Providing vending machines reduces labor costs and brings great convenience to consumers. The money exchanger consists of a coin acceptor and a bill acceptor.

However, sellers and consumers are always harassed by the problem of counterfeit bills with the use of bills. With advances in computer technology, the wicked can use computers to scan, copy, and print bills. Therefore, banknotes need counterfeit bill prevention technology. Visible anti-counterfeiting technologies include banknote materials, inks, seals, and marks that can be easily determined by eye. However, invisible anti-counterfeiting technology testing requires special machines or tools to demonstrate authenticity. The prover for this purpose uses a roller for moving the inserted banknote to the magnetic head, which detects the magnetic ink of the emblem and portrait, and compares each preset reference value to determine the authenticity of the banknote according to the comparison result. Compare the detection signals. However, the magnetic head tends to be contaminated by dust, which leads to inaccurate detection. Moreover, counterfeit bill manufacturers can make counterfeit bills containing similar magnetic ink to deceive the machine.

Today, modern securities provers use a variety of light emitting diodes (LEDs) that emit various lights to examine the properties of various bills. 9 and 10 show a conventional security (banknote) prover. The security prover of this design has a first linear light source A1 and a second linear light source A2 located on both sides of the test zone F1, and a plurality of light sensors C1 located between the two linear light sources A1 and A2. ) And a first optical element B1 positioned below the optical sensor C1. When the document (securities) E1 enters the entrance of the security prover, the entrance is blocked and the sheet conveying roller set starts to move to transfer the document E1 through the test zone F1. At the same time, the linear light sources A1 and A2 are controlled to emit pulsed light onto the document E1, the first optical element B1 concentrates the reflected light onto the optical sensor C1, and the optical sensor C1 is previously Feedback the detected value at the set circuit time point. This detection value is an indication of the average paired-pulse facilitation (PPF) of the scanned surface color of the document E1. The above method examines the entire document. Furthermore, the auxiliary light source a4 and the fourth optical element b4 may be provided on the other side. The auxiliary light source a4 is controlled to emit the perspective light passing through the document E1 to check the transmission of the document E1. After scanning, the operating unit of the security verifier receives the various values produced by the various light sources, compares the values with the stored comparisons, and decides whether to accept or reject the document. According to this derivation method, it is necessary to verify the document E1 of the multiple strip block and compare the comparison value with the scan value generated by the strip block for another determination. According to this design, each linear light source A1, A2 uses different colors of light emitting diode A3 to emit light of different colors for demonstration. Moreover, the second optical element B2 and the third optical element B3 are set in front of the first linear light source A1 and the second linear light source A2 to correct the respective light source output angles. The alignment of the linear light sources A1, A2, optical elements B1, B2, B3 and the optical sensor C1 must be calculated very carefully and the detected signal can be compared with reference values only for a more accurate determination. .

The above-mentioned conventional security prover has many disadvantages as follows.

1. In each of the linear light sources A1 and A2, the LEDs A3 are spaced apart from each other by a predetermined distance, so that the LEDs A3 have a document E1 in one same test zone F1 with different colored lights. Without being tested, only the mean value of all scanned lights can be used to calculate the surface color response of the document E1.

2. Different securities from different countries (E1) have different anti-counterfeiting characteristics. Therefore, the main unit must provide a high capacity database to store preset reference data for comparison.

3. This proofing method comprises a light emitting diode A3 for emitting light of a different color onto the document E1, and a first light for collecting the reflected light from another strip block of the document E1 for comparison with a reference value. An optical sensor C1 with element B1 is used. The precision of adjustment of the light sensor C1 and the optical elements B1, B2, B3 between the light emitting diodes A3 is important.

4. After scanning of the document E1 of another strip block with different colored light from the light emitting diode A3, a precise array calculation procedure is necessary to prove the authenticity of the document E1. This calculation procedure takes some time and is not suitable for use on vending machines to verify the authenticity of the bill.

5. The complex structure of the design of the security prover uses many parts and results in higher manufacturing costs.

Moreover, ATMs or bill counters, which are typically used in banking systems, use ultraviolet lamps to scan bills. Ultraviolet lamps are not suitable for use on vending machine vending machines. When the ultraviolet lamp type banknote verifier is used on an external vending machine, air moisture passes through the gap between the lamp and the electrical socket, producing an electrical short. Moreover, the bulbs of ultraviolet lamps run out quickly with use. Moreover, UV lamps consume a lot of power and generate a lot of heat energy during operation. Moreover, ultraviolet lamps have a large size, have a short durability, and are brittle.

The present invention is to overcome the above-mentioned conventional problems, an object of the present invention is to provide a lens module having a multi-position structure to have a lens device, and precisely positioned between the holder base and the top cover.

As an example of the lens module according to the present invention, the lens module is composed of a holder base, a lens device mounted on the upper side of the holder base, and a top cover that is covered on the holder base to hold the lens device underneath. The holder base has a top flange protruding from the top side, a full proof notch at one end of the top flange, and a plurality of positioning holes symmetrically located on the top side in an area defined by the top flange. The lens device has a protruding block that is press-fit into the space surrounded by the top flange and engages into the pull loop notch, and the plurality of positioning pins are respectively mated into the positioning holes of the holder base. Thus, the lens arrangement is precisely and in place between the holder base and the top cover.

According to another aspect of the present invention, the lens device protrudes from the bottom surface, a plurality of flat protrusions, respectively, which are matched through holes in the holder base in precise alignment with the LED or sensor of the circuit board on which the holder base is installed, and the flat protrusions It has a plurality of convex portions projecting from the corresponding upper surface. Therefore, the alignment of the LED or sensor and the lens device of the circuit board is automatically achieved after installation of the lens module on the circuit board, and no further alignment procedure is necessary.

According to another embodiment of the present invention, the lens module is designed for use in a bill acceptor. During application, the convex portion and the flat projection of the lens unit of the lens module on the circuit board of the light emitting unit of the bill acceptor are different wavelengths of light from the LED of the circuit board on the convex portion of the lens unit of the lens module on the circuit board of the light receiving unit of the bill acceptor. With the light receiving unit on the circuit board, the flat projection of the lens device of the lens module concentrates each light beam onto the sensor of the circuit board to demonstrate banknote authenticity. This design prevents interference between light beams from different LEDs and improves the true precision of the bill acceptor.

 One example of the subject innovation in the above aspects

It has a top side, a bottom side, two opposing sides,

A top flange extending from an upper side to an upper side, a plurality of vertical through-holes surrounded by the top flange and arranged in a row, and arranged on opposite sides with respect to the vertical through-holes in an area surrounded by the top flange. A plurality of positioning holes formed, a full proof notch at one end of the top flange, a plurality of mounting portions symmetrically positioned at opposite sides for fastening to the circuit board, and a plurality of symmetrically arranged at both opposite sides A holder base having a guide track and a plurality of retaining blocks each protruding from both opposing sides in each guide track,

Located on the upper side of the holder base in the top flange, and has a top surface and a bottom surface, the narrow and long flat lens base, the protruding block (211) engaging in the full-proof notch of the top flange of the holder base and extending from one end of the flat lens base ), A plurality of convex portions projecting from the upper side of the flat lens base, a plurality of flat protrusions projecting from the bottom portion of the flat lens base and mating into the holes of the holder base, respectively, and extending from the bottom portion of the flat lens base, respectively. A lens device having a plurality of positioning pins, each of which is fitted into a positioning hole of the holder base;

Covered on the holder base to keep the lens device down, a plurality of apertures corresponding to the convex portions of the lens device, bottom recesses for receiving the lens device in the top flange and the top flange of the holder base, and two opposing sides And a plurality of retaining lugs extending downward from the side and engaged respectively in the guide tracks of the holder base, the retaining lugs comprising a top cover having a retaining hole for engaging a retaining block of the holder base, the positioning of the holder base The holes are arranged symmetrically on opposite sides with respect to the through hole, and the holder base has a plurality of positioning rods provided symmetrically on both sides of the top flange, and the top cover is formed in the bottom recess and Has a plurality of positioning holes for engaging the positioning rod of the holder base; The id track is gradually reduced in width from the upper side of the holder base toward the bottom surface of the holder base, each of the retaining blocks having an inclined top surface to guide the retaining lug into place, the holder base being provided to the circuit board. Having a plurality of floor mounting rods extending from the bottom surface for fastening, said flat projection of said lens arrangement being cylindrical, said holder base being adapted to said through hole for receiving respective surface mounted light emitting diodes / sensors on a circuit board. It has a plurality of bottom receiving holes formed on corresponding bottom surfaces, and the mounting portion of the holder base is fixedly fastened to the screw holes on the circuit board with respective screws.

1 to 4, the lens module according to the present invention includes a holder base 1, a lens device 2, and a top cover 3.

The holder base 1 includes a narrow and long member having a top flange 11 extending from an upper side to a top, a plurality of vertical through holes 12 surrounded by the top flange 11 and arranged in a row, and a top flange ( 11) a plurality of positioning holes 13 symmetrically arranged on opposite sides with respect to the series of through holes 12 and formed on the upper side, and a full proof notch at one end of the top flange 11, in the region surrounded by 11). And a plurality of positioning rods 12 symmetrically provided on both sides of the top flange 11 and protruding above the uppermost edge of the top flange 11, on both opposite sides for fastening to the circuit board. A plurality of symmetrically positioned mountings 14, a plurality of guide tracks 15 arranged symmetrically on opposite sides and gradually decreasing in width from the top to the bottom, and on each guide track 15 Each stone from opposite sides A plurality of retaining blocks 16 each having an inclined top surface 161, a plurality of bottom receiving holes 17 formed on the bottom corresponding to the through hole 12, and a bottom for fastening to the circuit board. It consists of a plurality of extended floor mounting rods 18.

The lens device 2 is located on the upper side of the holder base 1 in the top flange 11, and has a narrow and long flat lens base 21 and a full proof notch of the top flange 11 of the holder base 1. 111, a protruding block 211 that engages within and extends from one end of the flat lens base 21, a plurality of protrusions 22 protruding from an upper side of the flat lens base 21, and a flat lens base 21. A plurality of flat projections 23 protruding from the bottom and respectively fitting into the through holes 12 of the holder base 1, and extending from the bottom of the flat lens base 21, respectively, and positioning holes of the holder base 1. (13) has a plurality of positioning pins 24 each matched.

The top cover 3 is covered on the holder base 1 to hold the lens device 2 down, and includes a plurality of through holes 31 corresponding to the convex portions 22 of the lens device 2, and a top. A bottom recess 32 for receiving the lens device 2 in the flange 11 and the top flange 11 of the holder base 1, and a bottom side in the bottom recess 32, which is formed on the bottom of the holder base 1; A plurality of positioning holes 321 respectively engaged in positioning rods 24 of the plurality of retaining lugs, and a plurality of retaining lugs extending downwardly from two opposing sides and respectively engaged in guide tracks 15 of the holder base 1. 33). The retaining lug 33 defines a retaining hole 34 which engages with the retaining block 16 of the holder base 1.

During assembly of the lens module, the lens device 2 is adapted to press the top pins and the protruding block 211 into the positioning holes 13 and the full proof notch 111 of the holder base 1. 11 is press-fit in the interior, and the flat projection 23 is engaged with the through hole 12 of the holder base 1. Due to the matching design between the positioning hole 13 of the holder base 1 and the full proof notch 111 and the positioning pin 24 of the lens device 2 and the protruding block, the present invention provides the lens device 2. To prevent incorrect installation.

After installation of the lens device 2 on the holder base 1, the top cover 3 is covered on the holder base 1, and the retaining lugs 33 are inserted into the guide track 15 of the holder base 1. The retaining hole 34 is engaged with the retaining block 16 of the holder base 1. By the inclined top surface 161 of each retaining block 16, the retaining lugs 33 are easily engaged with the retaining blocks 16 of the holder base 1 so that the lens device 2 can be moved from the holder base 1. It keeps downward and makes the convex part 22 of the lens apparatus 2 hold | maintain in the through hole 31 of the top cover 3.

5 and 6, the lens module of the present invention can be easily installed on a circuit board 4 having a plurality of LEDs 41 or sensors 42 mounted by Surface Mounting Technology (SMT). During installation, the bottom mounting rod 18 of the holder base 1 is inserted into each mounting hole 43 of the circuit board 4, and the LED 41 or the sensor 42 is bottomed out of the holder base 1. Received in the receiving holes 17, respectively, the mounting portion 14 of the holder base 1 is attached to each screw 45 and screw holes 44 of the circuit board 4, respectively. After installation, the LEDs 41 or sensors 42 are respectively aimed at the through holes 12 of the holder base 1 of the lens module. Therefore, the lens module can be easily installed on the circuit board 4, and the thickness of the circuit board 4 is not interfered with the installation of the lens module.

Substantially, two lens modules are respectively installed on two circuit boards 4 (one accommodating LEDs 41 and one accommodating a set of sensors 42), and the two circuit boards and the lens module assembly are opposed to each other. . One circuit board and lens module assembly is used as a light emitting unit and the other circuit board and lens module is used as a light receiving unit. The light emitting unit and the light receiving unit are located in a bill acceptor (not shown) on both sides with respect to the bill transfer passage. When the LED 41 of the light emitting unit is turned on, the LED 41 emits light toward the convex portion 22 of the lens module of the light receiving unit through the flat protrusion 23 and the convex portion 22. Due to the effect of the convex portion 22 of the lens module of the light emitting unit, the parallel light beam goes to the convex portion 22 of the lens module of the light receiving unit, and each flat projection 23 of the lens module of the light receiving unit is It is concentrated onto the sensor 42 (see FIG. 7).

Moreover, the LEDs 41 can emit multiple wavelengths such as, for example, 615 nm to 635 nm red light, 515 nm to 532 nm green light, 460 nm to 475 nm blue light, and high conductivity 850 nm first infrared light or 940 nm second infrared light. It can be designed to have an LED chip. By the control of the circuit board 4 of the light emitting unit, light of various wavelengths of strong pulses is given to a predetermined portion of the bill 6 to be proved, and the safety characteristic of the bill 6 can be tested. The bill 6 to be proved may be a bank note, traveler's check, bill, securities, etc. that can be used in a vending machine.

8 shows an application example according to the present invention in a bill acceptor 5 of a vending machine. When the bill 6 is inserted into the bill transfer passage 51 in the bill acceptor 5, the conveyer 52 of the bill acceptor 5 has two lens modules (a lens module of the light emitting unit and a lens of the light receiving unit). The banknote 6 is conveyed through the gap between the modules). At this time, the circuit board 4 of the light emitting unit controls the LED 41 to emit strong Falth light of various wavelengths from the flat protrusion 23 toward the convex portion 22 through the lens module, and the lens module of the light emitting unit. The convex portion 22 of the light beams is directed from the respective LEDs 41 to the light emitted from the detection portion of the same banknote 6.

When the light beam from each LED 41 passes through the detection part of the banknote 6, it goes to the corresponding convex part 22 of the lens module of the light receiving unit, and by the flat projection 23 onto the corresponding sensor 42. Are concentrated. When guided by the light beam from the LED 41, the sensor 42 outputs each signal to be compared with a reference value preset in the control unit of the bill acceptor 5 to determine the authenticity of the bill 6.

Proof of authenticity of the banknote 6 by radiation of various wavelengths of light can be done in one of two different ways. One method is that several wavelengths of light from the LED 41 are emitted to one and the same detector of the banknote 6, and the detector of the banknote 6 is compared with a preset reference value to prove the authenticity of the banknote 6. Provide different rates. Another method is that special transmitted light is produced with radiation of different wavelengths of light depending on the effect of the ink of the banknote 6, and the sensor 42 compares the transmitted light to a preset reference value to prove the authenticity of the banknote 6. Pick up.

As described above, the present invention has the following features;

1. From the positioning hole 13 and the full fruit notch 111 of the holder base 1, face the positioning pin 24 and the protruding block 211 of the lens device 2, and hold the lens device 2 in the holder. By pressing into the top flange 11 of the base 1 and fastening the top cover 3 to the holder base 1, the lens module is assembled, and the lens device 2 is provided with the holder base 1 and the top. It is precisely positioned in place between the cover 3 and there is no deformation. After installation of the lens module on the circuit board 4, the flat projections 23 of the lens device 2 are directed to the LED 41 or the sensor 42 of the circuit board 4 respectively and precisely for precise detection. .

2. By the bottom mounting rod 18 and the mounting portion 14 of the holder base 1, the lens module is easily installed on the circuit board 4, and the LED 41 or sensor 42 of the circuit board 4 is installed. Are respectively accommodated in the bottom receiving hole 17 of the holder base 1, and are precisely aimed at the flat projection 23 of the lens device 2. When used in the bill acceptor 5 of the vending machine, various wavelengths of light from the LED 41 are directed to each sensor 42 by the convex portion 22 of the lens device 2 without interference, and the sensor 42 Accurately receives the various wavelengths of light passing through the banknote 6 from the LED 41.

3. The lens device 2 is positioned in the holder base 1 and held downward by the top cover 3. After installation of the lens module in the circuit board 4, the flat projection 23 of the lens device 2 is precisely aimed at the LED 41 or the sensor 42 of the circuit board 4, and the Alignment between the LED 41 or the sensor 42 and the lens device 2 is no longer necessary.

As described above is just one embodiment for implementing the lens module according to the present invention, the present invention is not limited to the above embodiment, as claimed in the following utility model registration claims of the present invention Without departing from the gist, any person having ordinary knowledge in the field to which the present invention belongs will have a technical spirit of the present invention to the extent that various modifications can be made.

Claims (9)

It has a top side, a bottom side, two opposing sides, A top flange extending from an upper side to an upper side, a plurality of vertical through-holes surrounded by the top flange and arranged in a row, and arranged on opposite sides with respect to the vertical through-holes in an area surrounded by the top flange. A plurality of positioning holes formed, a full proof notch at one end of the top flange, a plurality of mounting portions symmetrically positioned at opposite sides for fastening to the circuit board, and a plurality of symmetrically arranged at both opposite sides A holder base having a guide track and a plurality of retaining blocks each protruding from both opposing sides in each guide track, Located on the upper side of the holder base in the top flange, and has a top surface and a bottom surface, the narrow and long flat lens base, the protruding block (211) engaging in the full-proof notch of the top flange of the holder base and extending from one end of the flat lens base ), A plurality of convex portions projecting from the upper side of the flat lens base, a plurality of flat protrusions projecting from the bottom portion of the flat lens base and mating into the holes of the holder base, respectively, and extending from the bottom portion of the flat lens base, respectively. A lens device having a plurality of positioning pins, each of which is fitted into a positioning hole of the holder base; Covered on the holder base to keep the lens device down, a plurality of apertures corresponding to the convex portions of the lens device, bottom recesses for receiving the lens device in the top flange and the top flange of the holder base, and two opposing sides A top cover extending downward from the side and having a plurality of retaining lugs respectively engaged in the guide track of the holder base, the retaining lugs having retaining holes for engaging with retaining blocks of the holder base; Lens module, characterized in that consisting of. The method of claim 1, The positioning hole of the holder base is symmetrically arranged on both opposite sides with respect to the through hole. The method of claim 1, The holder base has a plurality of positioning rods provided symmetrically on both sides of the top flange, and the top cover has a plurality of positioning holes which are formed in the bottom recess and engage with the positioning rods of the holder base. Lens module characterized in that it has. The method of claim 1, And the guide track is gradually reduced in width from the upper side of the holder base toward the bottom surface of the holder base. The method of claim 1, And each of the retaining blocks has an inclined top surface to guide the retaining lugs into place. The method of claim 1, And the holder base has a plurality of bottom mounting rods extending from the bottom surface for fastening to the circuit board. The method of claim 1, And the flat protrusion of the lens device is cylindrical. The method of claim 1, And the holder base has a plurality of bottom receiving holes formed on a bottom surface corresponding to the through hole for receiving each surface mounted light emitting diode / sensor on a circuit board. The method of claim 1, The mounting portion of the holder base is fixed to the screw hole on the circuit board with each screw fixedly.

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