CN102625021B - Light guide module of scanning device - Google Patents
Light guide module of scanning device Download PDFInfo
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- CN102625021B CN102625021B CN201110032859.7A CN201110032859A CN102625021B CN 102625021 B CN102625021 B CN 102625021B CN 201110032859 A CN201110032859 A CN 201110032859A CN 102625021 B CN102625021 B CN 102625021B
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Abstract
The invention relates to a light guide module of a scanning device. The light guide module comprises a plurality of lateral light emitting diodes arranged on a circuit board and a light guide column. The light guide column possesses a plurality of reflection structures corresponding to a plurality of lateral light emitting diodes. And reflections come from light beams of a plurality of lateral light emitting diodes. A first spacing between two lateral light emitting diodes located at a center is greater than a second spacing between another two lateral light emitting diodes located on two sides so that the light beams can be uniformly received by an optical sensing element on the scanning device.
Description
Technical field
The present invention relates to a kind of light guide module, relate in particular in scanning means in order to guide the light guide module of light beam.
Background technology
The main function of scanning means is to carry out image capture, in order to convert the content of hard copy file to e-file by the mode scanning, so that user propagates, arranges or preserves.Along with the maturation of scanning means technology, scanning means is universalness more and more also.
Refer to Fig. 1, its structural representation that is existing scanning means.Scanning means 1 comprises a lower house 10 and a upper shell 11, lower house 10 comprises a glass platform 101 and one scan module 102, glass platform 101 is in order to place the file P of wish scanning, and scan module 102 is used to move and scanning document P in lower house 10.11 of upper shells while being used to file P placing glass platform 101, cover lower house 10 and glue file P in scanning means 1.
Internal structure as for lower house 10 refers to Fig. 2, the structure schematic side view that it is existing scanning means.Lower house 10 is except glass platform 101 and scan module 102, also comprise a power transmission shaft 103 and a CD-ROM drive motor 104, scan module 102 is arranged at power transmission shaft 103, and CD-ROM drive motor 104 is connected in scan module 102, in order to provide power to give scan module 102, scan module 102 is moved along power transmission shaft 103.As for 102 of scan modules, comprise a light guide module 105, a stationary mirror 106, lens 107 and an optics sensing element 108.Light guide module 105 is upper in order to produce light beam L and to make light beam L be projeced into file P, and wherein light guide module 105 is fluorescent tube.Stationary mirror 106 is in order to reflect the light beam L being reflected by file P, and lens 107 are in order to focused beam L, and optics sensing element 108 produces document image in order to receiving beam L.
Next the situation of scanning means 1 operation is described, when user's wish is used 1 couple of file P of scanning means to scan, file P is positioned in the glass platform 101 of lower house 10, and makes upper shell 11 be covered in lower house 10 and glue file P.After file P fixedly completes, start scanning means 1, make the light guide module 105 of scan module 102 produce light beam L and it is projeced on file P, and file P folded light beam L makes light beam L speculum 106 reflection that is fixed, next light beam L is focused through lens 107, the light beam L being focused is produced the first of document image by optics sensing element 108, above-mentioned is the process of scanning document.When starting scanning means 1, also entry into service of CD-ROM drive motor 104 moves scan module 102 and whole file P is scanned on power transmission shaft 103, scan afterwards and can obtain complete document image.
The structure that next light guide module 105 is described, refers to Fig. 3, the structure front-view schematic diagram of its light guide module that is existing scanning means.Light guide module 105 comprises a pedestal 1051, a circuit board 1052, a forward light-emitting diode 1053, a light-guiding pillar 1054 and a fin 1055.Circuit board 1052 is arranged at one end of pedestal 1051, and light-guiding pillar 1054 is arranged on pedestal 1051.Forward light-emitting diode 1053 is arranged on circuit board 1052, in order to one end by pedestal 1051, produces light beam L, makes light beam L be projected to light-guiding pillar 1054, and light beam L is guided by light-guiding pillar 1054 and is projected to file P.Fin 1055 is arranged at one end of pedestal 1051, the heat energy producing when luminous in order to get rid of forward light-emitting diode 1053.
Due to a forward light-emitting diode 1053 being only set in light guide module 105, therefore forward light-emitting diode 1053 must adopt high-power light-emitting diode (Light Emitting Diode, LED) just can provide the brightness of certain degree, to carry out the scanning of file P.Yet, because forward light-emitting diode 1053 is high-power light-emitting diode, therefore fin 1055 must adopt larger area fin to be just enough to get rid of heat energy, make scanning means 1 must there is the space that is enough to accommodating fin 1055, cause scanning means 1 to be subject to many limitations on lightening the carrying out of volume.
Next, it is upper that the light beam L producing in light guide module 105 is projeced into file P, and the light beam L that is projected to the middle section of file P is received by optics sensing element 108 via stationary mirror 106 and lens 107.Similarly, the light beam L at two ends that is projected to file P is also via stationary mirror 106 and lens 107 and received by optics sensing element 108.For optics sensing element 108, it is more that optics sensing element 10 receives the light quantity of the light beam L that is projected to file P middle section, and the light quantity that receives the light beam L that is projected to file P two ends is less, while causing the scanning of carrying out file P, the two ends of file P are compared with secretly affecting quality of scanning.That is to say, the light beam L that light guide module 105 produces has the problem of light skewness, make optics sensing element 106 cannot receive equably light beam L, cause the quality of scanning of scan module 102 low, therefore, need a kind of light guide module that promotes quality of scanning and dwindle scanning means volume.
Summary of the invention
The object of the present invention is to provide a kind of light guide module that promotes the scanning means of quality of scanning.
Another object of the present invention is to provide a kind of light guide module that dwindles the scanning means of scanning means volume.
In a preferred embodiment, the invention provides a kind of light guide module of scanning means, comprising:
One circuit board;
A plurality of side direction LEDs, are arranged on this circuit board and are arranged as row, and each side direction LED is in order to produce a light beam; And
One light-guiding pillar, be arranged on circuit board and be covered in described a plurality of side direction LED, in order to guide described light beam, and this light-guiding pillar has a plurality of catoptric arrangements corresponding to described a plurality of side direction LEDs, be positioned at a bottom of this light-guiding pillar, and described a plurality of catoptric arrangement is in order to reflect described light beam; Wherein be positioned at one second spacing between another two side direction LEDs that one first spacing between two side direction LEDs of a middle section of this circuit board is greater than a side that is positioned at this circuit board.
In a preferred embodiment, between each catoptric arrangement and this circuit board, there is an accommodation space, in order to hold this corresponding side direction LED in wherein, make each side direction LED launch this light beam towards this adjacent reflecting surface, and this light beam is reflected by this adjacent catoptric arrangement.
In a preferred embodiment, each catoptric arrangement is a tilted reflective surfaces or a curved reflection surface.
In a preferred embodiment, described a plurality of catoptric arrangements are a plurality of reflection salient points, a plurality of reflection pyramid, a plurality of printing net-point or a plurality of reflection shrinkage pool.
In a preferred embodiment, described a plurality of catoptric arrangements also comprise a plurality of reflection salient points, a plurality of reflection pyramid, a plurality of printing net-point or a plurality of reflection shrinkage pool.
In a preferred embodiment, this light-guiding pillar also comprises a central reflecting surface, and it is positioned at a middle section of this bottom of this light-guiding pillar, in order to reflect described light beam.
In a preferred embodiment, the light guide module of scanning means of the present invention also comprises a plurality of forward light-emitting diodes, is arranged at respectively the two ends of this circuit board, in order to produce another light beam.
In a preferred embodiment, the present invention also provides a kind of light guide module of scanning means, comprising:
One circuit board;
One first side direction LED, is arranged on this circuit board, in order to produce one first light beam;
One second side direction LED, is arranged on this circuit board and is positioned at one first side of this first side direction LED, in order to produce one second light beam;
One the 3rd side direction LED, is arranged on this circuit board and is positioned at one second side of this first side direction LED, in order to produce one the 3rd light beam;
One the 4th side direction LED, is arranged on this circuit board and is positioned at one second side of the 3rd side direction LED, in order to produce one the 4th light beam; And
One light-guiding pillar, be arranged on circuit board and be covered in this first side direction LED, this second side direction LED, the 3rd side direction LED and the 4th side direction LED, in order to guide this first light beam, this second light beam, the 3rd light beam and the 4th light beam, and this light-guiding pillar has corresponding to this first side direction LED, this second side direction LED, a plurality of catoptric arrangements of the 3rd side direction LED and the 4th side direction LED, be positioned at a bottom of this light-guiding pillar, and described a plurality of catoptric arrangement is in order to reflect this first light beam, this second light beam, the 3rd light beam and the 4th light beam, wherein one first spacing between this first side direction LED and this second side direction LED is less than one second spacing between this first side direction LED and the 3rd side direction LED, and this first spacing equals one the 3rd spacing between the 3rd side direction LED and the 4th side direction LED.
In a preferred embodiment, between each catoptric arrangement and this circuit board, there is an accommodation space, in order to hold this corresponding first side direction LED, this second side direction LED, the 3rd side direction LED and the 4th side direction LED in wherein.
In a preferred embodiment, each catoptric arrangement is a tilted reflective surfaces or a curved reflection surface.
In a preferred embodiment, described a plurality of catoptric arrangements are a plurality of reflection salient points, a plurality of reflection pyramid, a plurality of printing net-point or a plurality of reflection shrinkage pool.
In a preferred embodiment, described a plurality of catoptric arrangements also comprise a plurality of reflection salient points, a plurality of reflection pyramid, a plurality of printing net-point or a plurality of reflection shrinkage pool.
In a preferred embodiment, this light-guiding pillar also comprises a central reflecting surface, and it is positioned at a middle section of this bottom of this light-guiding pillar, in order to reflect this first light beam and the 3rd light beam.
In a preferred embodiment, the light guide module of scanning means of the present invention also comprises:
One the 5th side direction LED, is arranged on this circuit board and is positioned at one first side of this second side direction LED, in order to produce one the 5th light beam; And
One the 6th side direction LED, is arranged on this circuit board and is positioned at one second side of the 4th side direction LED, in order to produce one the 6th light beam; Wherein one the 4th spacing between the 5th side direction LED and this second side direction LED is less than this first spacing, and the 4th spacing equals one the 5th spacing between the 4th side direction LED and the 6th side direction LED.
In a preferred embodiment, the light guide module of scanning means of the present invention also comprises a plurality of forward light-emitting diodes, is arranged at respectively the two ends of this circuit board, in order to produce another light beam.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing scanning means.
Fig. 2 is the structure schematic side view of existing scanning means.
Fig. 3 is the structure front-view schematic diagram of the light guide module of existing scanning means.
Fig. 4 is the light guide module of scanning means of the present invention structure schematic side view in the first preferred embodiment.
Fig. 5 is the light guide module of scanning means of the present invention partial structurtes schematic diagram in the first preferred embodiment.
Fig. 6 is the light guide module of scanning means of the present invention structure schematic side view in the first preferred embodiment.
Fig. 7 is the light guide module of scanning means of the present invention structure schematic side view in the second preferred embodiment.
Fig. 8 is the light guide module of scanning means of the present invention structure schematic side view in the 3rd preferred embodiment.
Fig. 9 is the light guide module of scanning means of the present invention structure schematic side view in the 4th preferred embodiment.
Wherein, description of reference numerals is as follows:
1,2 scanning means
10,20 lower houses
11,21 upper shells
101,201 glass platform
102,202 scan modules
103 power transmission shafts
104 CD-ROM drive motor
105,203,303,403,503 light guide modules
106,204 stationary mirrors
107,205 lens
108,206 optics sensing elements
1051 pedestals
1052,2031,3031,4031,5031 circuit boards
1053,2037,3037,4037,5037 forward light-emitting diodes
1054,2036,3036,4036,5036 light-guiding pillars
1055,1058 fin
2032,2033,2034,2035,2039,3032,3033,3034,3035,3039,3040,3041,4032,4033,4034,4035,4039,4040,4041,5032,5033,5034,5035,5039,5040,5041,5042 side direction LEDs
2038,4038 accommodation spaces
20311, the middle section of 30311,40311,50311 circuit boards
20312, the first side of 30312,40312,50312 circuit boards
20313, the second side of 30313,40312,50313 circuit boards
20361,30361,40361,50361 bottoms
20362,30362,40362,50362 catoptric arrangements
50363 central reflectings surface
50362A reflects salient point
D1, d2, d3, d4, d5, d6, d7 spacing
L, L*, L1, L2, L3, L4, L5, L6, L7, L8 light beam
P, P* file
Embodiment
In view of the defect of prior art, the invention provides a kind of light guide module of scanning means.Refer to Fig. 4, the structure schematic side view of its light guide module that is scanning means of the present invention in the first preferred embodiment.Scanning means 2 comprises a lower house 20 and a upper shell 21, lower house 20 comprises a glass platform 201 and one scan module 202, glass platform 201 is in order to place the file P* of wish scanning, and scan module 202 is used in lower house 20 move and scanning document P*, and scan module 202 comprises a light guide module 203, one stationary mirror 204, one lens 205 and an optics sensing element 206, wherein stationary mirror 204, lens 205, the structure of optics sensing element 206 and all the other travel mechanisms and function are all identical with person described in existing scanning means, therefore repeat no more.
Next the detailed structure of light guide module 203 is described, please refer to Fig. 5 and Fig. 6, Fig. 5 is the light guide module of scanning means of the present invention partial structurtes schematic diagram in the first preferred embodiment, and Fig. 6 is the light guide module of scanning means of the present invention structure schematic side view in the first preferred embodiment.Light guide module 203 comprises a circuit board 2031, one first side direction LED 2032, one second side direction LED 2033, one the 3rd side direction LED 2034, one the 4th side direction LED 2035, a light-guiding pillar 2036, a plurality of forward light-emitting diode 2037 and one the 5th side direction LED 2039.
In Fig. 5 and Fig. 6, the first side direction LED 2032 is arranged on circuit board 2031, in order to produce one first light beam L1.The second side direction LED 2033 is arranged on circuit board 2031 and is positioned at the first side of the first side direction LED 2032, in order to produce one second light beam L2.The 3rd side direction LED 2034 is arranged on circuit board 2031 and is positioned at the second side of the first side direction LED 2032, in order to produce the 3rd light beam L3.The 4th side direction LED 2035 is arranged on circuit board 2031 and is positioned at the second side of the 3rd side direction LED 2034, in order to produce the 4th light beam L4.And the 5th side direction LED 2039 is arranged on circuit board 2031 and be positioned at the first side of the second side direction LED 2033, in order to produce the 5th light beam L5.That is to say, the 5th side direction LED 2039, the second side direction LED 2033, the first side direction LED 2032, the 3rd side direction LED 2034, the 4th side direction LED 2035 is sequentially arranged as row, and the first side direction LED 2032 and the 3rd side direction LED 2034 are positioned on a middle section 20311 of circuit board 2031, the second side direction LED 2033 and the 5th side direction LED 2039 are positioned at the first side 20312 of circuit board 2031, and the 4th side direction LED 2035 is positioned at the second side 20313 of circuit board 2031, wherein between the first side direction LED 2032 and the second side direction LED 2033, there is one first spacing d1, between the first side direction LED 2032 and the 3rd side direction LED 2034, there is one second spacing d2, between the 3rd side direction LED 2034 and the 4th side direction LED 2035, there is one the 3rd spacing d3, between the 5th side direction LED 2039 and the second side direction LED 2033, there is one the 4th spacing d4, wherein the second spacing d2 is greater than the first spacing d1, and the first spacing d1 is greater than the 4th spacing d4, and the first spacing d1 equals the 3rd spacing d3.
Please continue to refer to Fig. 5 and Fig. 6, light-guiding pillar 2036 is arranged on circuit board 2031 and is covered in the first side direction LED 2032, the second side direction LED 2033, the 3rd side direction LED 2034, the 4th side direction LED 2035 and the 5th side direction LED 2039, in order to guide the first light beam L1, the second light beam L2, the 3rd light beam L3, the 4th light beam L4 and the 5th light beam L5.Light-guiding pillar 2036 has a plurality of catoptric arrangements 20362 corresponding to the first side direction LED 2032, the second side direction LED 2033, the 3rd side direction LED 2034, the 4th side direction LED 2035 and the 5th side direction LED 2039, be positioned at a bottom 20361 of light-guiding pillar 2036, and a plurality of catoptric arrangements 20362 are in order to reflect the first light beam L1, the second light beam L2, the 3rd light beam L3, the 4th light beam L4 and the 5th light beam L5, in this preferred embodiment, a plurality of catoptric arrangements 20362 are tilted reflective surfaces.A plurality of forward light-emitting diodes 2037 are arranged at respectively the two ends of circuit board 2031, in order to produce another light beam L*
In light guide module 203, between each catoptric arrangement 20362 and circuit board 2031, there is an accommodation space 2038, in order to hold corresponding the first side direction LED 2032, the second side direction LED 2033, the 3rd side direction LED 2034, the 4th side direction LED 2035 and the 5th side direction LED 2039 in wherein.
When scanning means 2 wishs scan file P*, light guide module 203 is driven and make the first side direction LED 2032, the second side direction LED 2033, the 3rd side direction LED 2034, the 4th side direction LED 2035, the 5th side direction LED 2039 and a plurality of forward light-emitting diode 2037 produce respectively the first light beam L1, the second light beam L2, the 3rd light beam L3, the 4th light beam L4, the 5th light beam L5 and another light beam L*, and the first light beam L1, the second light beam L2, the 3rd light beam L3, the 4th light beam L4 and the 5th light beam L5 are projected to respectively on a plurality of catoptric arrangements 20362 (that is tilted reflective surfaces) of light-guiding pillar 2036, make the first light beam L1, the second light beam L2, the 3rd light beam L3 and the 4th light beam L4 are reflected and by light-guiding pillar 2036, are guided and the first light beam L1～five light beam L5 is projected on file P* by a plurality of catoptric arrangements 20362 respectively.On the other hand, another light beam L* is also guided by light-guiding pillar 2036 and it is projected on file P*.
Need 3 points that have of special instruction, the first, a plurality of catoptric arrangements 20362 of light-guiding pillar 2036, in order to folded light beam L1～L5, spread equably light beam L1～L5 and can be projeced into equably on file P*.Second, the the second spacing d2 that is present in the middle section 20311 of circuit board 2031 is greater than the first spacing d1, the 3rd spacing d3 of the both sides of circuit board 2031 and the 4th spacing d4 in order to increase the light quantity on the two ends that are projeced into file P*, make these light beams L1～L5 and L* process stationary mirror 204 and lens 205 and can by optics sensing element 206, be received equably, to guarantee its quality of scanning.The 3rd, in order to guarantee further its quality of scanning, light guide module 203 of the present invention more arranges a plurality of forward light-emitting diodes 2037 in the two ends of circuit board 2031, to increase the light quantity at the two ends that are projected to file P*.
Moreover the present invention more provides one second preferred embodiment.Refer to Fig. 7, the structure schematic side view of its light guide module that is scanning means of the present invention in the second preferred embodiment.Light guide module 303 comprises a circuit board 3031, one first side direction LED 3032, one second side direction LED 3033, one the 3rd side direction LED 3034, one the 4th side direction LED 3035, a light-guiding pillar 3036, a plurality of forward light-emitting diode 3037, one the 5th side direction LED 3039, one the 6th side direction LED 3040 and one the 7th side direction LED 3041.The structure of the light guide module 303 of this preferred embodiment and function are roughly identical with the first preferred embodiment, and the first spacing d1, the second spacing d2, the 3rd spacing d3 and the 4th spacing d4 that put in order with 3032～3035,3039 of those side direction LEDs of the first side direction LED 3032, the second side direction LED 3033, the 3rd side direction LED 3034, the 4th side direction LED 3035 and the 5th side direction LED 3039 are all identical with the first preferred embodiment and repeat no more.
Different from the first preferred embodiment have 2 points, and the first, light guide module 303 also includes one the 6th side direction LED 3040 and one the 7th side direction LED 3041.The 7th side direction LED 3041 is arranged on circuit board 3031 and is positioned at the first side of the 5th side direction LED 3039 the first side 30312 of circuit board 3031 (that is be positioned at), and in order to produce one the 7th light beam L7.And the 6th side direction LED 3040 is arranged on circuit board 3031 and the second side of the 4th side direction LED 3035 the second side 30313 of circuit board 3031 (that is be positioned at), and in order to produce one the 6th light beam L6.Owing to having set up the 6th side direction LED 3040 and the 7th side direction LED 3041 on circuit board 3031, therefore between one the 7th side direction LED 3041 and the 5th side direction LED 3039, there is one the 6th spacing d6, and between the 4th side direction LED 3035 and the 6th side direction LED 3039, there is one the 5th spacing d5, wherein the second spacing d2 is greater than the first spacing d1, the first spacing d1 is greater than the 4th spacing d4, the 4th spacing d4 is greater than the 6th spacing d6, and the first spacing d1 equals the 3rd spacing d3, the 4th spacing d4 equals the 5th spacing d5.
Second, a plurality of catoptric arrangements 30362 that are positioned at the bottom 30361 of light-guiding pillar 3036 are curved reflection surface, in order to folded light beam L1～L7, and a plurality of catoptric arrangements 30362 (that is curved reflection surface) of this preferred embodiment are with the reflectivity folded light beam L1～L7 different from tilted reflective surfaces 20362, and can produce the light diffusion effect that is different from the first preferred embodiment.
Moreover the present invention more provides one the 3rd preferred embodiment.Refer to Fig. 8, the structure schematic side view of its light guide module that is scanning means of the present invention in the 3rd preferred embodiment.Light guide module 403 comprises a circuit board 4031, one first side direction LED 4032, one second side direction LED 4033, one the 3rd side direction LED 4034, one the 4th side direction LED 4035, a light-guiding pillar 4036, a plurality of forward light-emitting diode 4037, one the 5th side direction LED 4039, one the 6th side direction LED 4040 and one the 7th side direction LED 4041.The structure of the light guide module 403 of this preferred embodiment and function are roughly identical with the second preferred embodiment and repeat no more.
Be with the second preferred embodiment difference, a plurality of catoptric arrangements 40362 that are positioned at the bottom 40361 of light-guiding pillar 4036 are a plurality of reflection salient points, in order to folded light beam L1～L7 (the 7th light beam L7 is produced by the 7th side direction LED 4041), and a plurality of catoptric arrangements 40362 of this preferred embodiment (that is a plurality of reflection salient point) are with the reflectivity folded light beam L1～L7 different from curved reflection surface 30362, and can produce the light diffusion effect that is different from the second preferred embodiment.
Need special instruction, the catoptric arrangement of light guide module of the present invention also can adopt a plurality of reflection pyramids, a plurality of printing net-point or a plurality of reflection shrinkage pools etc. can folded light beam and have the structure of light diffusion function, but not is limited to a plurality of reflection salient points.In addition, in this preferred embodiment, between a plurality of catoptric arrangements 40362 (that is a plurality of reflection salient point) and circuit board 4031, also there are a plurality of accommodation spaces 4038, the external form of described a plurality of accommodation space 4038 changes design according to a plurality of catoptric arrangements 40362, but still can hold the first side direction LED 4032, the second side direction LED 4033, the 3rd side direction LED 4034, the 4th side direction LED 4035, the 5th side direction LED 4039, the 6th side direction LED 4040 and the 7th side direction LED 4041 in wherein.
In addition, the present invention also provides one the 4th preferred embodiment.Refer to Fig. 9, the structure schematic side view of its light guide module that is scanning means of the present invention in the 4th preferred embodiment.Light guide module 503 comprises a circuit board 5031, one first side direction LED 5032, one second side direction LED 5033, one the 3rd side direction LED 5034, one the 4th side direction LED 5035, a light-guiding pillar 5036, a plurality of forward light-emitting diode 5037, one the 5th side direction LED 5039, one the 6th side direction LED 5040, one the 7th side direction LED 5041 and one the 8th side direction LED 5042.The structure of the light guide module 503 of this preferred embodiment and function are roughly identical with the second preferred embodiment and repeat no more.
Be with the second preferred embodiment difference, light guide module 503 additionally arranges the 8th side direction LED 5042 on circuit board 5031, and light-guiding pillar 5036 also comprises a central reflecting surface 50363, be positioned at a middle section of the bottom 50361 of light-guiding pillar 5036.And a plurality of catoptric arrangements 50362 that are positioned at the bottom 50361 of light-guiding pillar 5036 are curved reflection surface, and from the both sides of central reflecting surface 50363, the both sides toward circuit board 5031 arrange those catoptric arrangements 50362 (being curved reflection surface) respectively, that is first side direction LED 5032 and the 3rd side direction LED 5034 be positioned at the middle section 50311 of circuit board 5031, and the second side direction LED 5033, the 5th side direction LED 5039 and the 7th side direction LED 5041 are positioned at the first side 50312 of circuit board 5031, and the 4th side direction LED 5035, the 6th side direction LED 5040 and the 8th side direction LED 5042 are positioned at the second side 50313 of circuit board 5031, wherein corresponding to the first side direction LED 5032, the second side direction LED 5033, a plurality of catoptric arrangements 50362 of the 5th side direction LED 5039 and the 7th side direction LED 5041 are towards the first side 50312 directions of circuit board 5031 (that is left side) in Fig. 9, and corresponding to the 3rd side direction LED 5034, the 4th side direction LED 5035,50362 the second side 50313 directions towards circuit board 5031 of a plurality of catoptric arrangements (that is the right side in Fig. 9) of the 6th side direction LED 5040 and the 8th side direction LED 5042.
By the structure of above-mentioned light-guiding pillar 5036, the first light beam L1 and the 3rd light beam L3 that the first side direction LED 5032 and the 3rd side direction LED 5034 produce can be directly projeced on central reflecting surface 50363, make the first light beam L1 and the 3rd light beam L3 by central reflecting surface 50363 reflections.Moreover a plurality of catoptric arrangements 50362 on light-guiding pillar 5036 also comprise a plurality of reflection shrinkage pool 50362A, in order to folded light beam L1～L8 (the 8th light beam L8 is produced by the 8th side direction LED 5042).By a plurality of reflection shrinkage pool 50362A are set on a plurality of catoptric arrangements 50362 (being curved reflection surface), more can increase the effect of light diffusion, and then add the homogenizing of strong beam.In this preferred embodiment, only take a plurality of reflection shrinkage pool 50362A as example explanation, not as limit.Certainly, a plurality of reflection salient points, a plurality of reflection pyramid or a plurality of printing net-point are set on a plurality of catoptric arrangements 50362 and also can implement, and a plurality of catoptric arrangement 50362 also can adopt tilted reflective surfaces.
According to above-mentioned known, the light guide module of scanning means of the present invention is except the bottom in light-guiding pillar has additional a plurality of catoptric arrangements, more adjust the spacing between every two side direction LEDs, make between between every two side direction LEDs of the middle section of circuit board, apart from another spacing being greater than between another two side direction LEDs of the both sides that are positioned at circuit board, by the homogenizing of this structural strengthening light beam, to guarantee the quality of scanning.In addition, because the side direction LED in the light guide module of scanning means of the present invention and forward light-emitting diode all adopt low-power light-emitting diode, although adopt two above low-power light-emitting diodes on circuit board, but the cost of the light guide module of scanning means of the present invention is still lower than two High Power LEDs being set in light guide module wherein, therefore the cost of the light guide module of scanning means of the present invention is lower than the light guide module of existing scanning means.
The foregoing is only preferred embodiment of the present invention, not in order to limit claim of the present invention, therefore all other do not depart from the equivalence change completing under disclosed spirit or modifies, and all should be contained in protection scope of the present invention.
Claims (13)
1. a light guide module for scanning means, comprising:
One circuit board;
A plurality of side direction LEDs, are arranged on this circuit board and are arranged as row, and each side direction LED is in order to produce a light beam; And
One light-guiding pillar, be arranged on circuit board and be covered in described a plurality of side direction LED, in order to guide described light beam by light beam described in this penetrates this light-guiding pillar, and this light-guiding pillar has a plurality of catoptric arrangements corresponding to described a plurality of side direction LEDs, described catoptric arrangement is positioned at a bottom of this light-guiding pillar, and described a plurality of catoptric arrangement is in order to reflect described light beam; Wherein be positioned at one second spacing between another two side direction LEDs that one first spacing between two side direction LEDs of a middle section of this circuit board is greater than a side that is positioned at this circuit board;
Wherein the plurality of side direction LED is arranged as row, and the described light beam that the plurality of side direction LED produces is propagated along its orientation, the plurality of catoptric arrangement is arranged as row, and one end is arranged on to be irradiated between its adjacent diode and circuit board, between each catoptric arrangement and this circuit board, there is an accommodation space, in order to hold this corresponding side direction LED in wherein, make each side direction LED launch this light beam towards this adjacent catoptric arrangement, and this light beam is reflected by this adjacent catoptric arrangement.
2. the light guide module of scanning means as claimed in claim 1, wherein each catoptric arrangement is a tilted reflective surfaces or a curved reflection surface.
3. the light guide module of scanning means as claimed in claim 2, wherein said a plurality of catoptric arrangements also comprise a plurality of reflection salient points, a plurality of reflection pyramid, a plurality of printing net-point or a plurality of reflection shrinkage pool.
4. the light guide module of scanning means as claimed in claim 1, wherein said a plurality of catoptric arrangements are a plurality of reflection salient points, a plurality of reflection pyramid, a plurality of printing net-point or a plurality of reflection shrinkage pool.
5. the light guide module of scanning means as claimed in claim 1, wherein this light-guiding pillar also comprises a central reflecting surface, this central authorities' reflecting surface is positioned at a middle section of this bottom of this light-guiding pillar, in order to reflect described light beam.
6. the light guide module of scanning means as claimed in claim 1, wherein this light guide module also comprises a plurality of forward light-emitting diodes, described a plurality of forward light-emitting diodes are arranged at respectively the two ends of this circuit board, in order to produce another light beam.
7. a light guide module for scanning means, comprising:
One circuit board;
One first side direction LED, is arranged on this circuit board, in order to produce one first light beam;
One second side direction LED, is arranged on this circuit board and is positioned at one first side of this first side direction LED, in order to produce one second light beam;
One the 3rd side direction LED, is arranged on this circuit board and is positioned at one second side of this first side direction LED, in order to produce one the 3rd light beam;
One the 4th side direction LED, is arranged on this circuit board and is positioned at one second side of the 3rd side direction LED, in order to produce one the 4th light beam; And
One light-guiding pillar, be arranged on circuit board and be covered in this first side direction LED, this second side direction LED, the 3rd side direction LED and the 4th side direction LED, in order to by this first light beam, this second light beam, the 3rd light beam and the 4th light beam penetrate this light-guiding pillar and guide this first light beam, this second light beam, the 3rd light beam and the 4th light beam, and this light-guiding pillar has corresponding to this first side direction LED, this second side direction LED, a plurality of catoptric arrangements of the 3rd side direction LED and the 4th side direction LED, be positioned at a bottom of this light-guiding pillar, and described a plurality of catoptric arrangement is in order to reflect this first light beam, this second light beam, the 3rd light beam and the 4th light beam, wherein one first spacing between this first side direction LED and this second side direction LED is less than one second spacing between this first side direction LED and the 3rd side direction LED, and this first spacing equals one the 3rd spacing between the 3rd side direction LED and the 4th side direction LED,
Wherein the plurality of side direction LED is arranged as row, and the described light beam that the plurality of side direction LED produces is propagated along its orientation, the plurality of catoptric arrangement is arranged as row, and one end is arranged on to be irradiated between its adjacent diode and circuit board, between each catoptric arrangement and this circuit board, there is an accommodation space, in order to hold this corresponding first side direction LED, this second side direction LED, the 3rd side direction LED and the 4th side direction LED in wherein.
8. the light guide module of scanning means as claimed in claim 7, wherein each catoptric arrangement is a tilted reflective surfaces or a curved reflection surface.
9. the light guide module of scanning means as claimed in claim 8, wherein said a plurality of catoptric arrangements also comprise a plurality of reflection salient points, a plurality of reflection pyramid, a plurality of printing net-point or a plurality of reflection shrinkage pool.
10. the light guide module of scanning means as claimed in claim 7, wherein said a plurality of catoptric arrangements are a plurality of reflection salient points, a plurality of reflection pyramid, a plurality of printing net-point or a plurality of reflection shrinkage pool.
The light guide module of 11. scanning means as claimed in claim 7, wherein this light-guiding pillar also comprises a central reflecting surface, this central authorities' reflecting surface is positioned at a middle section of this bottom of this light-guiding pillar, in order to reflect this first light beam and the 3rd light beam.
The light guide module of 12. scanning means as claimed in claim 7, also comprises:
One the 5th side direction LED, is arranged on this circuit board and is positioned at one first side of this second side direction LED, in order to produce one the 5th light beam; And
One the 6th side direction LED, is arranged on this circuit board and is positioned at one second side of the 4th side direction LED, in order to produce one the 6th light beam; Wherein one the 4th spacing between the 5th side direction LED and this second side direction LED is less than this first spacing, and the 4th spacing equals one the 5th spacing between the 4th side direction LED and the 6th side direction LED.
The light guide module of 13. scanning means as claimed in claim 7, wherein this light guide module also comprises a plurality of forward light-emitting diodes, described a plurality of forward light-emitting diodes are arranged at respectively the two ends of this circuit board, in order to produce another light beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110032859.7A CN102625021B (en) | 2011-01-26 | 2011-01-26 | Light guide module of scanning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110032859.7A CN102625021B (en) | 2011-01-26 | 2011-01-26 | Light guide module of scanning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102625021A CN102625021A (en) | 2012-08-01 |
| CN102625021B true CN102625021B (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110032859.7A Expired - Fee Related CN102625021B (en) | 2011-01-26 | 2011-01-26 | Light guide module of scanning device |
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| Country | Link |
|---|---|
| CN (1) | CN102625021B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1469626A (en) * | 2002-07-18 | 2004-01-21 | 力捷电脑股份有限公司 | Brightness homogenizing light source module |
| CN2796271Y (en) * | 2005-04-27 | 2006-07-12 | 崴强科技股份有限公司 | Plat form type scanner |
| CN1854847A (en) * | 2005-04-21 | 2006-11-01 | 安捷伦科技有限公司 | Light system with an attachment structure that is insert molded to a light guide |
| CN201121848Y (en) * | 2007-12-14 | 2008-09-24 | 崴强科技股份有限公司 | Scanner light source |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4379404B2 (en) * | 2005-09-28 | 2009-12-09 | 日立ライティング株式会社 | Light source module, liquid crystal display device, and light source module manufacturing method |
-
2011
- 2011-01-26 CN CN201110032859.7A patent/CN102625021B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1469626A (en) * | 2002-07-18 | 2004-01-21 | 力捷电脑股份有限公司 | Brightness homogenizing light source module |
| CN1854847A (en) * | 2005-04-21 | 2006-11-01 | 安捷伦科技有限公司 | Light system with an attachment structure that is insert molded to a light guide |
| CN2796271Y (en) * | 2005-04-27 | 2006-07-12 | 崴强科技股份有限公司 | Plat form type scanner |
| CN201121848Y (en) * | 2007-12-14 | 2008-09-24 | 崴强科技股份有限公司 | Scanner light source |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102625021A (en) | 2012-08-01 |
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