Light supply apparatus
Technical field
The utility model relates to a kind of light supply apparatus, and particularly relevant for a kind of light supply apparatus with a plurality of independent and rotatable light-reflecting sheets.
Background technology
Significantly progressive along with computer performance in recent years, add the high development of multimedia technology, except utilizing digital camera (Digital Camera, DC) directly capture analog image light, and corresponding the generation outside the digital image signal, the image input operation of other any relevant documents or picture, all need see through the image fetch device of an optical scanner (Optical Scanner) or other similar functions, capture the analog image light on file or the picture, and to the digital image signal of converting, so will help the demonstration of user at computer equipment or other the relevant enterprising line number word of electronic product image archives, identification (OCR), editor, work such as store and print.
Optical scanner approximately can be distinguished into hand held optical scanner, paper feed type optical scanner, business card optical scanner, egative film optical scanner and platform-type optical scanner etc.Wherein, the similar glass platform of platform-type optical scanner is that file or pattern are placed on the flat glass, is moved by the optical scanning module and data is read in.Because its structure is can be too complicated, and also difficulty not too of using method, add function extendibility with height, therefore become the arrange in pairs or groups main flow of optical scanner of computer user now.
The light source of known optical scanner for example is a cold cathode fluorescent lamp pipe (Coldcathode fluorescence lamp, CCFL), its be a columnar light source and its generation light can towards around the emission, so can cover this light source at the other configuration of light source one reflex housing, and with the reflection of light that light source produced via reflex housing, shine and concentrate, to increase the utilization factor of light towards the direction of file.
Fig. 1 illustrate is the synoptic diagram of light supply apparatus in the known optical scanner.Please refer to shown in Figure 1ly, light supply apparatus 100 is made of a light source 110 and a reflex housing 120.Wherein, reflex housing 120 has an opening 125, and light source 110 is to be disposed at reflex housing 120 central authorities, by reflex housing 120 light is reflected and is concentrated to the part zone of a file 50 to be scanned.In addition, the section shape of reflex housing 120 for example is semicircle, L shaped and half elliptic.Wherein, the spotlight effect of semicircle and L shaped design is not good, though and half elliptic design can make light luminance received on the unit area of file to be scanned improve, but owing to be fixed design, and can't go to adjust the direction of light reflection as required, and light source itself also can block the light that is partly reflected by reflex housing, and the light utilization ratio is reduced.In addition, half elliptic light shield design need take bigger space on spatial configuration, makes that the little scanner in script space is difficult in configuration.
The utility model content
Therefore, the purpose of this utility model is providing a kind of light supply apparatus exactly, can reflect more rays and control light to reflex on the irradiation area of file to be scanned, to reach the purpose that effective utilization rate of light improves.
Based on above-mentioned purpose, the utility model proposes a kind of light supply apparatus, be suitable for providing the light source of an optical scanning module.This light supply apparatus is made of a plurality of light reflecting boards and a light source.Wherein, light reflecting board is to be coupled in the optical scanning module, and light reflecting board is free to rotate.Light reflecting board is to constitute a cavity, and cavity has an opening, and light reflecting board is in order to the radiation direction of control by the opening outgoing.Light source is to be disposed in the optical scanning module, and is positioned at the cavity that light reflecting board constitutes.In addition, the shell of optical scanning module has a plurality of axis holes, and the two ends of light reflecting board have a mandrel rod respectively, and these mandrel rods are fit to be coupled in the axis hole, and light reflecting board can be coupled with the optical scanning module, and rotates according to need and individually.
In sum,, be not limited to provide a line source of concentrating, a uniform surface light source or other illuminating effects of desiring to reach also can be provided according to the light supply apparatus that the utility model proposed.
Description of drawings
For above-mentioned and other purposes of the present utility model, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below, wherein:
Fig. 1 illustrate is the synoptic diagram of light supply apparatus in the known optical scanner;
Fig. 2 illustrate is the synoptic diagram according to the light supply apparatus of the preferred embodiment that the utility model proposed; And
Fig. 3 illustrate is for it adjusts the synoptic diagram of tool according to the light supply apparatus of the preferred embodiment that the utility model proposed.
Embodiment
Fig. 2 illustrate is the synoptic diagram according to the light supply apparatus of the preferred embodiment that the utility model proposed.Please refer to shown in Figure 2ly, light supply apparatus 200 is made of a plurality of light reflecting boards 250 and a light source 270.Wherein, light reflecting board 250 is to be coupled in the optical scanning module 230, and light reflecting board 250 is free to rotate.These light reflecting boards 250 constitute cavitys 257, and cavity 257 has an opening 259, and light reflecting board 250 is in order to the radiation direction of control by opening 259 outgoing.Light source 270 for example is a cold cathode fluorescent lamp pipe, is disposed in the optical scanning module 230, and is positioned at the cavity 257 that light reflecting board 250 is constituted.In addition, the shell of optical scanning module 230 has a plurality of axis holes 240, and the two ends of light reflecting board 250 have a mandrel rod 255 respectively, and these mandrel rods 255 are fit to be coupled in the axis hole 240, and light reflecting board 250 can be coupled with optical scanning module 230.
It should be noted that the action need of the visual optics scanning module of aforesaid light reflecting board, and individual other adjusted the angle that is provided with of each sheet light reflecting board, therefore can make light source the reflected light full blast concentrate correcting on file to be scanned.
Fig. 3 illustrate is for it adjusts the synoptic diagram of tool according to the light supply apparatus of the preferred embodiment that the utility model proposed.Please refer to shown in Figure 3ly, light supply apparatus is adjusted tool 300 and is made of one first side plate 320, one second side plate 330, a plurality of light reflecting board 350, a plurality of light reflecting board adjusting mechanism 380 and a light source 370.Wherein, first side plate 320 and second side plate 330 are the both sides that are disposed at light supply apparatus 300 respectively, and first side plate 320 and second side plate 330 are parallel to each other.Light reflecting board 350 is to be coupled between first side plate 320 and second side plate 330, and light reflecting board 350 can be rotated.These light reflecting boards 350 constitute a cavity 357, and cavity 357 has an opening 359.Light reflecting board adjusting mechanism 380 is to be disposed at first side plate 320 and second side plate 330, is suitable for connecting respectively the light reflecting board 350 of a correspondence, and adjusts the angle that is provided with of light reflecting board 350.Light source 370 for example is a cold cathode fluorescent lamp pipe, is disposed in the cavity 357 between first side plate 320 and second side plate 330.
In addition, light supply apparatus is adjusted tool 300 and is also comprised a tool base 310, connects first side plate 320 and second side plate 330, adjusts the more firm structural strength of tool 300 so that light supply apparatus to be provided.And, first side plate 320 and second side plate 330 have a plurality of axis holes 340 respectively, the two ends of light reflecting board 350 have a mandrel rod 355 respectively, and these mandrel rods 355 are fit to be coupled in the axis hole 340, and light reflecting board 350 can be coupled with first side plate 320 and second side plate 330.In addition, for accurate adjustment action is provided, each light reflecting board adjusting mechanism 380 is made of a gear 382, a screw rod 384 and a knob 386.Wherein, gear 382 is to be sleeved on the mandrel rod 355 of corresponding light reflecting board 350 1 ends, the screw thread of screw rod 384 is and the tooth of gear 382 meshes, and knob 386 is to be sleeved on the screw rod 384, and gear 382 can further be portrayed the angle groove in its surface.By gear ratio design through calculating, adjust in the adjustment process of tool 300 at light supply apparatus, can accurately grasp the rotational angle of each light-reflecting sheet 350.In addition, first side plate 320 and second side plate 330 also have a plurality of configurations screw rod holder 325 thereon, with standing screw 384.
Certainly, being familiar with this skill person should know, aforesaid light reflecting board is fixed in the method in the light supply apparatus, be not limited only to the coupling of mandrel rod and axis hole, also can be the mode that other are suitable for rotating, and device pedestal, first side plate and second side plate also can be one of the forming, or other are suitable for the structure of other elements in the fixed light source device.And aforesaid light reflecting board adjusting mechanism also can only be made of a knob, and knob is to be sleeved on the mandrel rod of corresponding light reflecting board one end.It should be noted that and to find out easily in the light supply apparatus of the preferred embodiment that proposes according to the utility model that the best of each light reflecting board is provided with angle by aforesaid light reflecting board adjusting mechanism.
Though the utility model discloses as above with a preferred embodiment; right its is not in order to limit the utility model; anyly have the knack of this skill person; in not breaking away from spirit and scope of the present utility model; when doing a little change and retouching, therefore protection domain of the present utility model is as the criterion when looking accompanying the claim person of defining.