CN2485669Y - Background luminous panel for scanner - Google Patents
Background luminous panel for scanner Download PDFInfo
- Publication number
- CN2485669Y CN2485669Y CN 01226671 CN01226671U CN2485669Y CN 2485669 Y CN2485669 Y CN 2485669Y CN 01226671 CN01226671 CN 01226671 CN 01226671 U CN01226671 U CN 01226671U CN 2485669 Y CN2485669 Y CN 2485669Y
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- Prior art keywords
- back lighting
- scanner
- base plate
- light
- zone
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Abstract
The utility model discloses a background luminous panel for scanner, which is hinged with a platform type scanner consists of a shell and a sole board. A reflecting board, a light conducting board, a light-split and diffusing plate and a light-centralizing board are arranged in the enclosed space between the shell and the ground; the central part of the sole board has a background luminous area; and the light conducting board has a symmetrical edge identical with the background luminous area of the sole board; the protruded edge at the two sides are bent into a cover of light tube which is matched with the light tube of the light source. Due to the structure above, the utility model provides a background light source with an even distributed grey scale for the different scanners; and the background luminous panel has great value of industrialization in practical application.
Description
The utility model relates to the backlit illumination source of video scanner, refers to a kind of scanner back lighting template of improving general contribution back lighting zone especially.
At present general image scanner often uses template backlight that well-illuminated contribution is carried out image scan.When transparent contribution was carried out image scan, must be equipped with top light source provided scanner required back light, and its employed template backlight can be divided into: removable lamp tube type template backlight and planar light source formula template backlight.Because traditional removable lamp tube type template backlight must design the mechanism of dividing a word with a hyphen at the end of a line and drive moving of fluorescent tube, so in structure complexity comparatively, and its volume can't dwindle.Therefore, planar light source formula template backlight certainly will become the development main flow of back light from now on.
Referring to Fig. 1, directly be hinged with template 2 backlight on the contribution carrying platform 10 of flat-bed color image scanners 1.Be provided with known reflective scanning mode device in the inside of this flat-bed color image scanners 1, this device comprises mechanisms such as movable platen 11, pair of guide rails 12,13, movable platen 11 has carried known Image Sensor, as charge coupled cell CCD, this movable platen 11 can be along guide rail 12,13 shift reciprocatelies, so that the contribution that is placed on the contribution carrying platform 10 is carried out image scan.When using this image scanner to carry out image scan to being placed on transparent contribution on the contribution carrying platform 10, can directly template 2 backlight be covered on the transparent contribution to be scanned, can scan.
The field of illumination 23 of template 2 base plates 22 backlight is transparent windows, the field of illumination shape that tradition is used is to be designed to as shown in Figure 1 square field of illumination 23 or rectangular illumination zone 24 as shown in Figure 2 or other several different rectangular illumination zone according to different demands, and need on contribution carrying platform 10, place an identical shaped negative folder, just can carry out the scanning of transparent contribution.Therefore, in actual use, must prepare multi-disc and have difform negative folder, fibrous root is changed different negative folders according to the shape of different field of illuminations during use, uses very trouble inconvenience.
The purpose of this utility model is that a kind of scanner back lighting template of improving general contribution back lighting zone will be provided.Its field of illumination can effectively be applicable to the back lighting needs of multiple difformity contribution.
Another purpose of the present utility model provides a kind of scanner back lighting template with symmetric figure or asymmetry back lighting zone, and this field of illumination cooperates the light source fluorescent tube of symmetric figure, projects the back light that uniform gray level distributes in the field of illumination.Owing to the different designs of field of illumination and light guide plate, can satisfy the needs of different back lightings.
The purpose of this utility model is achieved in that a kind of scanner back lighting template, be articulated in use supporting on the frame of platform-type scanner with it, it mainly is made up of housing and base plate, form a confined space between housing and the base plate, from top to bottom sequentially be provided with reflecting plate in it, light guide plate, several piece is divided light diffusing sheet and solar panel, it is characterized in that: the central authorities of base plate establish the back lighting zone of being made by transparent material, light guide plate has the symmetrical border identical with the back lighting of base plate zone, and its both sides protrude out the illuminator shroud that spring is converted into symmetry and match with a light source fluorescent tube.
The utility model also can be realized by following measure: the back lighting zone of described base plate central authorities is a symmetric shape, and back lighting is regional parallel or vertical with the direction of motion of scanner movable platen;
Described light guide plate has the symmetric shape corresponding to base plate central authorities back lighting zone, and the y direction of its symmetric shape and light source fluorescent tube is parallel or vertical with the direction of motion of scanner movable platen; The back lighting zone of described base plate central authorities is an asymmetrical shape, and the back lighting zone is parallel with the direction of motion of scanner movable platen; Described light guide plate has the asymmetrical shape corresponding to base plate central authorities back lighting zone, and the y direction of its asymmetrical shape and light source fluorescent tube is with parallel with the direction of motion of scanner movable platen; Light diffusing sheet can be more than one or two in described minute.
Concrete structure of the present utility model is described further by following examples and accompanying drawing:
Fig. 1, for commonly using template backlight forms square field of illumination in its bottom stereographic map.
Fig. 2, for commonly using template backlight forms the rectangular illumination zone in its bottom stereographic map.
Fig. 3, be the stereographic map of the utility model on scanner.
Fig. 4, be three-dimensional exploded view of the present utility model.
Fig. 5, be the floor map in the utility model symmetric figure back lighting zone.
Fig. 6, the intensity profile synoptic diagram that on light guide plate, is produced for the utility model light source fluorescent tube.
Fig. 7, be the floor map in the another kind of symmetric figure back lighting of the utility model zone.
Fig. 8-11, be the floor map in several different asymmetry back lighting zone of the utility model second embodiment.
Referring to Fig. 3, the utility model first embodiment, a kind of scanner back lighting template 3 is mainly used on the contribution carrying platform 10 of flat-bed color image scanners 1.The inside of this flat-bed color image scanners 1 is provided with the reflective scanning mode device, and this device comprises mechanisms such as movable platen 11, pair of guide rails 12,13.Movable platen 11 can move back and forth along guide rail 12,13, so that the contribution that is placed on the contribution carrying platform 10 is carried out image scan.
Referring to Fig. 4,5, above-mentioned scanner back lighting template 3 mainly comprises: housing 31 and base plate 32.Base plate 32 is packed in the bottom of housing 31, form a confined space in it, the central authorities of base plate 32 offer the symmetric figure back lighting zone 30 of being made by transparent material, in the confined space between housing 31 and base plate 32, from top to bottom sequentially be provided with reflecting plate 33, light guide plate 34, divide light diffusing sheet 35 and solar panel 36.
Two corresponding lateral margins of light guide plate 34 form symmetrical border 34a, 34b, just corresponding to the edge in the symmetric figure back lighting zone 30 of back lighting template 3 base plates 32.Light guide plate 34 both sides protrude out the illuminator shroud that limit 34c, 34d upwards are bent into symmetry, respectively adorn a light source fluorescent tube 41,42 in it.Light source fluorescent tube 41,42 light that produced are shone on the plane of light guide plate 34 equably by reflector 33, and the y direction of light source fluorescent tube 41,42 is identical with the moving direction of the movable platen 11 of scanner.
The branch light diffusing sheet 35 of light guide plate 34 belows can be made further evenly DIFFUSION TREATMENT to the light on the light guide plate 34, the solar panel 36 that divides light diffusing sheet 35 belows, in order to giving optically focused by the even light that 36 beam split DIFFUSION TREATMENT of minute light diffusing sheet are crossed, the light after optically focused is handled directly projects the symmetric figure back lighting zone 30 of back lighting template 3 base plates 32.
Referring to Fig. 6, in the left field of light guide plate 34, the closer to the first light source fluorescent tube 41, then suffered its influence degree is big more, and away from the zone of the first light source fluorescent tube 41, suffered its influence degree then reduces gradually.In like manner, in the right side area of light guide plate 34, the closer to secondary light source fluorescent tube 42, the influence degree of then suffered secondary light source fluorescent tube 42 is big more, and away from the zone of secondary light source fluorescent tube 42, then suffered its influence degree then reduces gradually.And at the middle section 34e of light guide plate 34, though be subjected to the minimum that influences of the first light source fluorescent tube 41 and secondary light source fluorescent tube 42, it is subjected to the common irradiation of two light source fluorescent tubes 41,42 simultaneously, so its gray-scale value is still basic identical with peripheral each point gray-scale value.
In a word, though the position difference of point in each zone of light guide plate, the grey value difference of each point is little, and therefore, two light source fluorescent tubes 41,42 can form the light that uniform gray level distributes on the whole plane of light guide plate 34.
In this embodiment, its light guide plate 34 has corresponding symmetrical border 34a, 34b with symmetric figure back lighting zone 30.Also can be designed to shape as shown in Figure 7, the symmetric figure back lighting of its base plate 32 zone 30a and symmetric figure back lighting zone shown in Figure 5 30 are vertical mutually to be 90 °.In like manner, the shape of light guide plate 34 is also done corresponding change, is 90 ° and the moving direction of the y direction of light source fluorescent tube 41,42 and the movable platen 11 of scanner is vertical mutually.Can provide scanner required even back light equally.
Referring to Fig. 8-11, the utility model second embodiment, the basic structure of scanner back lighting template 3 is identical with first embodiment, its difference is: its base plate 32 is provided with asymmetry back lighting zone 30b, 30c, 30d, 30e, in like manner, its light guide plate 34 and light source fluorescent tube 41,42 also should be done corresponding change.Central authorities at this kind asymmetry back lighting zone 30b, 30c, 30d, 30e generally are easier to produce the uneven phenomenon of intensity profile.Generally, generally all can in back lighting template 3, install additional a slice or several pieces minutes light diffusing sheet 35, can improve the uneven problem of intensity profile effectively.
The utility model has the advantage of: because background luminous panel is at back lighting zone and LGP On have mutual correspondence difform design, such as the design of symmetric figure or unsymmetrical, so can have Effect is applicable to the back lighting needs of multiple difformity contribution, in addition because the cooperation of back lighting zone The light source fluorescent tube of symmetric figure can project in the field of illumination back light that uniform gray level distributes, so can Satisfy the needs of different back lightings, so that the different scanning device back of the body that needed uniform gray level distributes to be provided Radiant has the value of industrialization in practical application.
Claims (7)
1, a kind of scanner back lighting template, be articulated in use supporting on the frame of platform-type scanner with it, it mainly is made up of housing and base plate, form a confined space between housing and the base plate, from top to bottom sequentially be provided with reflecting plate, light guide plate, several piece in it and divide light diffusing sheet and solar panel, it is characterized in that: the central authorities of base plate establish the back lighting zone of being made by transparent material, light guide plate has the symmetrical border identical with the back lighting of base plate zone, and its both sides protrude out the illuminator shroud that spring is converted into symmetry and match with a light source fluorescent tube.
2, scanner back lighting template according to claim 1 is characterized in that: the back lighting zone of described base plate central authorities is symmetric shape, and the back lighting zone is parallel or vertical with the direction of motion of scanner movable platen.
3, scanner back lighting template according to claim 1, it is characterized in that: described light guide plate has the symmetric shape corresponding to base plate central authorities back lighting zone, and the y direction of its symmetric shape and light source fluorescent tube is parallel with the direction of motion of scanner movable platen.
4, scanner back lighting template according to claim 1, it is characterized in that: described light guide plate has the symmetric shape corresponding to base plate central authorities back lighting zone, and the y direction of its symmetric shape and light source fluorescent tube is vertical with the direction of motion of scanner movable platen.
5, scanner back lighting template according to claim 1 is characterized in that: the back lighting zone of described base plate central authorities is asymmetrical shape, and the back lighting zone is parallel with the direction of motion of scanner movable platen.
6, scanner back lighting template according to claim 1 or 5, it is characterized in that: described light guide plate has the asymmetrical shape corresponding to base plate central authorities back lighting zone, and the y direction of its asymmetrical shape and light source fluorescent tube is parallel with the direction of motion of scanner movable platen.
7, scanner back lighting template according to claim 1, it is characterized in that: light diffusing sheet can be more than one or two in described minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01226671 CN2485669Y (en) | 2001-06-15 | 2001-06-15 | Background luminous panel for scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01226671 CN2485669Y (en) | 2001-06-15 | 2001-06-15 | Background luminous panel for scanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2485669Y true CN2485669Y (en) | 2002-04-10 |
Family
ID=33642266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01226671 Expired - Fee Related CN2485669Y (en) | 2001-06-15 | 2001-06-15 | Background luminous panel for scanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2485669Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315318C (en) * | 2003-06-23 | 2007-05-09 | 宇东科技股份有限公司 | Scanning device having energy storing back light apparatus |
| CN106200114A (en) * | 2015-05-26 | 2016-12-07 | 乐金显示有限公司 | There is liquid crystal display and the back light unit thereof of multiple viewing area |
| CN113419370A (en) * | 2018-06-06 | 2021-09-21 | 上海中航光电子有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
-
2001
- 2001-06-15 CN CN 01226671 patent/CN2485669Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315318C (en) * | 2003-06-23 | 2007-05-09 | 宇东科技股份有限公司 | Scanning device having energy storing back light apparatus |
| CN106200114A (en) * | 2015-05-26 | 2016-12-07 | 乐金显示有限公司 | There is liquid crystal display and the back light unit thereof of multiple viewing area |
| CN106200114B (en) * | 2015-05-26 | 2019-10-18 | 乐金显示有限公司 | Liquid crystal display and its back light unit with multiple display areas |
| CN113419370A (en) * | 2018-06-06 | 2021-09-21 | 上海中航光电子有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
| CN113419370B (en) * | 2018-06-06 | 2022-10-18 | 上海中航光电子有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |