CN2438179Y - Light source mechanism of optical scanner - Google Patents
Light source mechanism of optical scanner Download PDFInfo
- Publication number
- CN2438179Y CN2438179Y CN 00239215 CN00239215U CN2438179Y CN 2438179 Y CN2438179 Y CN 2438179Y CN 00239215 CN00239215 CN 00239215 CN 00239215 U CN00239215 U CN 00239215U CN 2438179 Y CN2438179 Y CN 2438179Y
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- CN
- China
- Prior art keywords
- light source
- lampshade
- optical scanner
- source mechanism
- pointolite
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a light source mechanism of an optical scanner. The utility model comprises at least one point light source and a lampshade; the point light source is arranged at one end of the lampshade to provide the light source required when the optical scanner scans, wherein the lampshade is an elongate hollow tube-shaped structure. The utility model is characterized in that the lampshade is provided with an elongate slit in the axial direction, and the tube wall surface at the inner side of the lampshade is a scattering face which enables the light ray emitted by the point light source to be evenly scattered in the tube wall surface at the inner side of the lampshade, and linear light ray with even illuminance is released via the elongate slit to carry out image scanning.
Description
The utility model relates to a kind of light source mechanism, refers to especially a kind ofly utilize pointolite and lampshade combination to produce the uniform linear light sorurce of illumination, can be used for the light source mechanism of optical scanner.
Optical scanner is that a kind of common computer peripheral is equipped with, it mainly is the manuscript image that utilizes its inner light source mechanism scanning manuscript loading end, and provide suitable light path by optical element (catoptron and lens) with the image that manuscript reflected, pass through charge coupled cell (CCD) acquisition manuscript image again, make the manuscript video conversion become digital signal, at last again with this signal conveys to computer to carry out image processing.
See also Figure 1A, shown in the 1B, it is the light source structural scheme of mechanism of prior art optical scanner, this light source mechanism 1 mainly is by a fluorescent tube 12 and a light source base 14 be combined intos, the length pact of this fluorescent tube 12 is identical with the width of the manuscript loading end of optical scanner, needed light source when its purpose is to provide optical scanner scanning, this light source base 14 is that a microscler storage tank 141 also can make fluorescent tube 12 be placed in wherein, this storage tank 141 has the light source that a microscler breach 142 launches fluorescent tube 12 and can be disengaged by this place again, the inner surface of this storage tank 141 is a reflecting surface, its shape be with circular arc or parabola shaped be the best, make its reflecting surface have light harvesting and function of reflecting to increase the illumination of light source mechanism 1.
Yet the light source mechanism of prior art has following shortcoming when carrying out image scan:
A. the employed scanning light source of light source mechanism of prior art is a fluorescent tube, and the optical source wavelength scope that fluorescent tube can provide is narrower, and all be in the scope of visible light usually, but some optical scanner must scan with invisible light, therefore during as the scanning light source of optical scanner, will influence the range of application of optical scanner with fluorescent tube.
The light source mechanism of b. existing branch art is because employed light source is a fluorescent tube, but the life-span of fluorescent tube is shorter, and be subjected to easily external force collision or because air to enter fluorescent tube inner and destroy.
C. the light source mechanism of prior art is a fluorescent tube owing to employed light source, but the light illumination that fluorescent tube produced is unstable, relatively also can influence the quality of scanning of optical scanner.
D. the light source mechanism of prior art is to use fluorescent tube as scanning light source, but because the unit price of fluorescent tube is expensive, cost is high, relatively also makes the production cost of optical scanner improve, and relatively the competitive power in market also can reduce.
In view of this, fundamental purpose of the present utility model just is to provide a kind of light source mechanism of optical scanner, it is with the scanning light source of pointolite as optical scanner, make that the optical scanner cost reduces, illumination is stable, the life-span prolongs and can provide scope wider wavelength, thereby improve the deficiencies in the prior art part, and then it is wider to obtain higher quality of scanning and range of application.
For reaching this purpose, the utility model provides a kind of light source mechanism of optical scanner, and it comprises: at least one is for the required pointolite of image scan; One lampshade, this lampshade are hollow tubular structure, and its at least one end has the joint portion of point of fixity light source; This lampshade is provided with an elongated slits on its axial surface, and the inside tube wall surface of this lampshade is a scattering surface.
The pointolite of described light source mechanism can be two, and is arranged at the two ends of this lampshade respectively.Described pointolite is the LED light emitting diode.
The scattering surface of described lampshade inside tube wall surface is made up of a plurality of annular convex surface.A plurality of annular convex surface of the scattering surface of this lampshade are to electroplate thereon with chemical mode.A plurality of annular convex surface of the scattering surface of this lampshade are formed thereon in the injection molding mode.Described lampshade is to be interosculated by a loam cake and a lower cover to form, and is provided with scattering surface at the inner surface of this loam cake, and the inner surface of this lower cover is provided with high reflectance internal layer and elongated slits.The length of this elongated slits is identical substantially with the manuscript loading end width of this optical scanner.
The scattering power of the inside tube wall scattering face of described lampshade is far away more and increase gradually with the range points light source.
The light source mechanism of optical scanner provided by the utility model comprises an at least one pointolite and a lampshade, and this pointolite provides optical scanner needed light source of when scanning, and its number is serve as the best two ends of also being located at lampshade respectively with two.Owing to adopt pointolite, it has the advantages that cost is low, the life-span is long, illumination is stable, and can provide scope wider wavelength, therefore can make whole optical scanner reach to reduce cost, life-saving and the effect of stablize illumination is provided, and make the quality of scanning raising.
In addition, the scattering surface of the inboard tube wall of the lampshade of this mechanism can be made up of a plurality of annular convex surface, because annular convex surface has the function of scattering on optics geometry, the light that pointolite is launched is disengaged by elongated slits in the inner evenly scattering of lampshade again, though pointolite is the two ends that are fixed on lampshade, but since its before disengaging by elongated slits through repeatedly scattering, therefore can improve the excessive phenomenon of lampshade two ends illumination widely, make light source mechanism produce the uniform linear light sorurce of illumination carrying out image scan, thereby make optical scanner have superior in quality scanning effect in elongated slits.
Below in conjunction with drawings and the specific embodiments the utility model is further described in more detail.
Figure 1A, 1B are the light source structural scheme of mechanism of the optical scanner of prior art.
Fig. 2 is the first enforcement illustration of the light source mechanism of optical scanner of the present utility model.
Fig. 3 is the scattering surface structural representation of light source of the present utility model mechanism inside tube wall.
Fig. 4 is the second enforcement illustration of the light source mechanism of optical scanner of the present utility model.
See also shown in Figure 2, its be optical scanner of the present utility model light source mechanism first implement illustration.
The light source mechanism 2 of present embodiment comprises a pointolite 21 and a lampshade 22, wherein this pointolite 21 is a light emitting diode (LED), because light emitting diode has with low cost, life-span is long, advantages such as the stable and producible wavelength coverage of illumination is wider, therefore quite be fit to scanning light source as optical scanner, but because optical scanner must scan manuscript with linear light sorurce when scanning, and the light source that light emitting diode can provide is a pointolite 21, so this light source mechanism 2 more need utilize a lampshade 22 to make pointolite 21 can be converted into linear light sorurce to carry out the scanning of manuscript.
Wherein this lampshade 22 is a microscler hollow tubular structure, this lampshade is to be combined by a loam cake 221 and a lower cover 222, and its material is to be the best with lighttight material, the one end is provided with joint portion 223 and above-mentioned pointolite 21 can be fixed, the lower cover 222 of this lampshade 22 that is characterised in that of the present utility model is provided with an elongated slits 224 on its axial surface, the length of this elongated slits 224 width with the manuscript loading end approximately is suitable, so that the manuscript of manuscript loading end is scanned fully, again this lampshade 22 within it the side pipe wall surface be to be a scattering surface 225, its purpose is to make light that pointolite 21 launched in lampshade 22 inner evenly scatterings, to avoid near the light illumination pointolite 21 excessive, the light of therefore working as these lampshade 22 inside is in the scattering through scattering surface 225, when disengaging through elongated slits 224 again, the linear light sorurce illumination that it produced will be more even, and the scanning effect also can be better.
See also Fig. 2 and shown in Figure 3, the scattering surface 225 of these lampshade 22 inboard tube walls has a plurality of annular convex surface 226, wherein above-mentioned annular convex surface 226 is to be located at loam cake 221 and to form the high reflectance internal layer at lower cover 222, its formation method can be to utilize the injection molding mode or the electroless plating mode forms, because annular convex surface 226 structures have the function of scattering on optics geometry, therefore the light that this pointolite 21 can be launched is in lampshade 22 inner evenly scatterings, disengage by the elongated slits 224 of lampshade 22 more at last, to produce linear sweep light source comparatively uniformly.
Though this pointolite 21 is ends that are fixed in lampshade 22, but because its light of launching is earlier through repeatedly scattering, therefore can avoid lampshade 22 excessive in pointolite 21 place's illumination, and in the phenomenon of other position illumination deficiency, though this light source mechanism 2 can utilize lampshade 22 to make it can produce uniform linear light sorurce at elongated slits 224 places to carry out civilian withered scanning, but generally speaking, near the illumination that this lampshade 22 is produced pointolite 21 is still higher, and along with the distance illumination far away more from pointolite 21 also can be low more.In order to solve the above problems, make elongated slits 224 produce more uniform linear light sorurce, the lampshade 22 of present embodiment is in the design of the annular convex surface 226 of its scattering surface 225, can be with the scattering power of this annular convex surface 226 along with progressively increasing with the increase of pointolite 21 distances, thus, script will be lower because of near annular convex surface 226 scattering powers this place than the high light line near the illumination pointolite 21, and then make the illumination at this place obtain suitable weakening, and near annular lug 226 scattering powers will locating because of this from pointolite 21 parts far away will be higher, and then make the illumination at this place obtain suitable increase, make lampshade 22 can obtain more uniform illumination output, to produce preferable quality of scanning at elongated slits 224 places.
See also shown in Figure 4, its be optical scanner of the present utility model light source mechanism second implement illustration.
The 2a of light source mechanism of present embodiment comprises two pointolite 21a, 21b and a lampshade 22a, above-mentioned two pointolite 21a, 21b are to be the best with light emitting diode (LED), address so repeat no more in first embodiment as its advantage of scanning light source with light emitting diode, above-mentioned again two pointolite 21a, 21b are to be the best with the two ends that are arranged at lampshade 22a.This lampshade 22a is a microscler hollow tubular structure, and by a loam cake 221a and a lower cover 222a be combined into, the material of this lampshade 22a is to be the best with lighttight material, this lampshade 22a is respectively equipped with a joint portion 223a, 223b is so that with above-mentioned two pointolite 21a, 21b fixes, the lower cover 222a of this lampshade 22a that is characterised in that of the present utility model is provided with an elongated slits 224a at its direction of principal axis, the length of this elongated slits 224a width with the manuscript loading end approximately is suitable, so that the manuscript of manuscript loading end is scanned fully, again this lampshade 22a within it the surface of side pipe wall be to form a scattering surface 225a, its purpose is to make the pointolite 21a that is located at lampshade 22a two ends, the light that 21b launched can be through the scattering of this scattering surface 225a, make light can be dispersed in lampshade 22a inside equably, and be unlikely origination point light source 21a, near the excessive phenomenon of the illumination 21b, therefore when the light of lampshade 22a inside disengages by elongated slits 224a through the scattering of scattering surface 225a again, can produce an illumination uniformly linear light sorurce scan to carry out manuscript.
Please consult Fig. 3 and shown in Figure 4 again, its scattering surface of inboard tube wall and first embodiment of the lampshade of present embodiment all are made up of a plurality of annular convex surface 226 and high reflectance internal layer, the formation method of above-mentioned annular convex surface 226 is to utilize the injection molding mode or the electroless plating mode forms, because annular convex surface 226 structures have the function of scattering on optics geometry, therefore can make above-mentioned two pointolite 21a, the light that 21b launched is in the inner evenly scattering of lampshade 22a, last disengage via the elongated slits 224a of lampshade 22a again, to obtain the uniform linear sweep light source of illumination.
Even so, the 2a of this light source mechanism still can produce pointolite 21a, near the excessive and lower phenomenon of lampshade 22a middle place illumination of the illumination 21b, therefore for the present embodiment, the 2a of this light source mechanism can be as first embodiment with pointolite 21a, near the scattering power of the annular convex surface 226 the 21b reduces, and the scattering power of the annular convex surface 226 at place in the middle of the lampshade 22a improved, make originally at pointolite 21a, near the 21b suitable the weakening of illumination that will locate because annular convex surface 226 scattering powers reduce than the high light line, and the suitable raising of illumination that will will locate because of the increase of annular lug 226 scattering powers than decreased light in the middle of the lampshade 22a, and then make lampshade 22a obtain more uniform illumination output at elongated slits 224a place, to produce preferable quality of scanning.
The above only is several preferred embodiment of the present utility model, is not to be used to limit protection domain of the present utility model.
Claims (8)
1, a kind of light source mechanism of optical scanner is characterized in that it comprises:
At least one is for the required pointolite of image scan;
One lampshade, this lampshade are hollow tubular structure, and its at least one end has the joint portion of point of fixity light source;
This lampshade is provided with an elongated slits on its axial surface, and the inside tube wall surface of this lampshade is a scattering surface.
2, the light source mechanism of optical scanner according to claim 1 is characterized in that: the pointolite of described light source mechanism can be two, and is arranged at the two ends of this lampshade respectively.
3, the light source mechanism of optical scanner according to claim 1 is characterized in that: the scattering surface of described lampshade inside tube wall surface is made up of a plurality of annular convex surface.
4, the light source mechanism of optical scanner according to claim 1, it is characterized in that: described lampshade is to be interosculated by a loam cake and a lower cover to form, and the inner surface at this loam cake is provided with scattering surface, and the inner surface of this lower cover is provided with high reflectance internal layer and elongated slits.
5, the light source mechanism of optical scanner according to claim 1 is characterized in that: described pointolite is the LED light emitting diode.
6, the light source mechanism of optical scanner according to claim 3 is characterized in that: a plurality of annular convex surface of the scattering surface of described lampshade are to electroplate thereon with chemical mode.
7, the light source mechanism of optical scanner according to claim 3 is characterized in that: a plurality of annular convex surface of the scattering surface of described lampshade are formed thereon in the injection molding mode.
8, the light source mechanism of optical scanner according to claim 1 is characterized in that: the length of the elongated slits of described lampshade is identical substantially with the manuscript loading end width of this optical scanner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00239215 CN2438179Y (en) | 2000-06-13 | 2000-06-13 | Light source mechanism of optical scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00239215 CN2438179Y (en) | 2000-06-13 | 2000-06-13 | Light source mechanism of optical scanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2438179Y true CN2438179Y (en) | 2001-07-04 |
Family
ID=33600104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00239215 Expired - Lifetime CN2438179Y (en) | 2000-06-13 | 2000-06-13 | Light source mechanism of optical scanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2438179Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486525A (en) * | 2014-11-26 | 2015-04-01 | 成都西华升腾科技有限公司 | Scanning lamp tube fixing device |
-
2000
- 2000-06-13 CN CN 00239215 patent/CN2438179Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486525A (en) * | 2014-11-26 | 2015-04-01 | 成都西华升腾科技有限公司 | Scanning lamp tube fixing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUDONG TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LIJIE COMPUTER CO., LTD. Effective date: 20060224 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060224 Address after: 14 floor, No. 168 North Dunhua Road, Taipei, Taiwan Patentee after: Transpacific IP Pte Ltd. Address before: Hsinchu Science Industrial Park, Taiwan Patentee before: Lijie Computer Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: YUXI SCIENCE CO., LTD. Free format text: FORMER OWNER: YUDONG TECHNOLOGY CO., LTD. Effective date: 20090828 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090828 Address after: Delaware, zip code: Patentee after: Transpacific IP Pte Ltd. Address before: Building 14, 168 North Dunhua Road, Taiwan, Taipei Province, China: 000000 Patentee before: Transpacific IP Pte Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010704 |