CN2489191Y - Small bar-type light source for contact image sensor - Google Patents
Small bar-type light source for contact image sensor Download PDFInfo
- Publication number
- CN2489191Y CN2489191Y CN 01243334 CN01243334U CN2489191Y CN 2489191 Y CN2489191 Y CN 2489191Y CN 01243334 CN01243334 CN 01243334 CN 01243334 U CN01243334 U CN 01243334U CN 2489191 Y CN2489191 Y CN 2489191Y
- Authority
- CN
- China
- Prior art keywords
- bar
- light
- light source
- image sensor
- utility
- Prior art date
- 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 - Fee Related
Links
Images
Landscapes
- Facsimile Scanning Arrangements (AREA)
Abstract
The utility model relates to a small bar-type light source for contact image sensor. A light-guiding bar is arranged in a groove of a light-reflecting bar. Head end face of the light-guiding bar is connected with the lighting part which is fixedly provided with a lighting chip. Side face of the light-guiding bar is provided with a light-reflecting layer. The technical character of the utility model is terminal end face of the light-guiding bar is provided with a light-absorbing layer. The utility model is low in cost, great in lighting uniformity; and the utility model can be flexibly and rapidly manufactured into variable sizes of small bar-type light source according to the demand.
Description
The utility model relates to the telecommunication class, the bar-shaped light source of specifically a kind of contact-type image sensor.
We know that contact-type image sensor (being called for short CIS) is to utilize photoelectricity transformation principle view data to be converted to a kind of device of a series of electronic signals.Contact-type image sensor luminous sensitivity height, the effective length of device equates with the original copy fabric width, picture signal pixel of picking up and original copy ratio are 1: 1, therefore do not need to focus on, light path is short, solved the uniformity of image optical signalling and the volume problem of parts, it has realized the miniaturization of facsimile machine, portable and mobile fax.Contact-type image sensor is the image pick-uping part that generally uses in the present facsimile machine, and bar-shaped light source is the luminescent system that is widely used on the contact-type image sensor.Existing bar-shaped light source is made up of illuminating part, leaded light bar, reflecting strips three parts, and bar-shaped light source total length is 227.5mm, and effective length is 216mm, only is suitable for the use of A4 breadth imageing sensor.Development along with the image sensing technology, market is to the increasing of small-sized cis demand, corresponding small-sized cheaply bar-shaped light source applications is also more and more, miniature light sources demand to 56mm, 72mm, 108mm and 128mm is very big especially, but existing light source can only be applied on the fetch equipment that fabric width is 216mm, can not flexible Application in small-sized fetch equipment.In a single day existing bar-shaped light source completes, and its luminous homogeneity just determines, and after it was become miniature light sources, its luminous homogeneity was just destroyed.Just need die sinking tool again if make the miniature light sources of all lengths, expense height, cycle are long.
The purpose of this utility model is exactly in order to overcome above-mentioned the deficiencies in the prior art, provides low, the luminous homogeneity of a kind of cost good, can make the small-sized bar-shaped light source of various sizes as required flexibly, quickly.
For achieving the above object, the utility model can be realized by following measure: it is provided with the leaded light bar, the leaded light bar is positioned at the groove of reflecting strips, the head end end face of leaded light bar is connected with illuminating part, illuminating part is fixed with luminescence chip, the side of leaded light bar is provided with reflection layer, and its technical characterstic is that leaded light bar end face is provided with light absorbing zone.
The utility model also can be realized by following measure: the color of light absorbing zone is for dark.
Low, the luminous homogeneity of the utility model cost is good, can make the small-sized bar-shaped light source of various sizes as required flexibly, quickly.
The utility model will be further described below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of contact-type image sensor.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the structural representation of the utility model leaded light bar.
Fig. 4 is the structural representation of the utility model light absorbing zone.
As can be seen from Figure 1, contact-type image sensor is made up of framework 1, bar-shaped light source 2, lens (lens) 3, glass plate 4 and photoinduction surface-mounted integrated circuit (pcb) 5, and its structure and mounting means belong to known, communal technique, here repeated description no longer.
Fig. 2, Fig. 3, shown in Figure 4, its head end end face of leaded light bar is connected with illuminating part in the small-sized bar-shaped light source, illuminating part 7 is that luminescence chip is fixed on the chip substrate by bonding die glue, with the spun gold pressure welding chip is coupled together then, and is luminous by starting luminescence chip 7 at the limb making alive.Reflecting strips 8 is to make bathtub construction by the opaque and white plastics, and leaded light bar 6 is installed in the groove of reflecting strips 8, and the plastic housing of white has very strong reflex to the light of irradiation, can reduce the loss of light to greatest extent.The purpose of this utility model is exactly not reopen under the preceding topic of mould, the small-sized bar-shaped light source of all size is provided as required quickly and easily.Determine the effective dimensions of contact-type image sensor according to the needs of fetch equipment size, determine the effective length and the overall length of small-sized bar-shaped light source leaded light bar 6 and reflecting strips 8 then, remove unnecessary part and the cross section repairing of leaded light bar 6 is smooth with machining process or laser cutting method, make it to basically form mirror surface.Because the shortening of bar-shaped light source causes the reflection light quantity of bar-shaped light source end face to increase, the light source not output of end regions increases, and the output homogeneity of light source is damaged.Processing one deck light absorbing zone 9 on the end face that aforementioned leaded light bar 6 is not held, coatings such as available black or other dark ink, dyestuff, or adhere to one deck light absorbing zone 9 with its method, be used to absorb unnecessary light, thereby make light source that the output of homogeneous be arranged in whole output area.The area of light absorbing zone 9 is relevant with the length difference of original bar-shaped light source and small-sized bar-shaped light source, and length difference is big more, and the area of light absorbing zone 9 is big more, and maximum magnitude is a not end section maximum area of leaded light bar, otherwise the area of light absorbing zone 9 is just more little.
The utility model changes the side intensity of light reflection of light source as required, realize small-sized bar-shaped light source homogeneous output, adhere to one deck reflection layer 10 in the coating of the side of leaded light bar 6 or with other method, as white or other light-coloured coating, dyestuff etc., be used to reflect the light of conduction, by changing the area in reflection layer 10 zones, improve the output intensity of leaded light bar 6 ambient lights, thereby reduce to arrive the light quantity that the leaded light bar is not held, make light source that the output of homogeneous be arranged in whole output area, the area in reflection layer 10 zones is relevant with the length difference of original bar-shaped light source and small-sized bar-shaped light source, big more reflection layer 10 region areas of length difference are big more, otherwise reflection layer 10 region areas are more little.
Claims (2)
1, the small-sized bar-shaped light source of a kind of contact-type image sensor, it is provided with the leaded light bar, the leaded light bar is positioned at the groove of reflecting strips, the head end end face of leaded light bar is connected with illuminating part, illuminating part is fixed with luminescence chip, the side of leaded light bar is provided with reflection layer, it is characterized in that leaded light bar end face is provided with light absorbing zone.
2, according to the small-sized bar-shaped light source of the described contact-type image sensor of claim 1, the color that it is characterized in that said light absorbing zone is for dark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01243334 CN2489191Y (en) | 2001-06-04 | 2001-06-04 | Small bar-type light source for contact image sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01243334 CN2489191Y (en) | 2001-06-04 | 2001-06-04 | Small bar-type light source for contact image sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2489191Y true CN2489191Y (en) | 2002-05-01 |
Family
ID=33654957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01243334 Expired - Fee Related CN2489191Y (en) | 2001-06-04 | 2001-06-04 | Small bar-type light source for contact image sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2489191Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348036A (en) * | 2010-07-29 | 2012-02-08 | 亚泰影像科技股份有限公司 | Method for manufacturing light source of contact image sensor module |
-
2001
- 2001-06-04 CN CN 01243334 patent/CN2489191Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348036A (en) * | 2010-07-29 | 2012-02-08 | 亚泰影像科技股份有限公司 | Method for manufacturing light source of contact image sensor module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4504662B2 (en) | LED lamp | |
| EP1118883A3 (en) | Sheet of optical microlenses, and planar light source and image display apparatus using the same sheet | |
| CN205003694U (en) | Scanning pen | |
| CN2489191Y (en) | Small bar-type light source for contact image sensor | |
| CN108319072A (en) | A kind of FPC board manufacturing methods and backlight module for backlight module | |
| CN201803316U (en) | Backlight guide plate | |
| CN2746537Y (en) | Luminous of reflection lens | |
| CN101339720A (en) | Construction of outdoor surface welded LED display module | |
| CN207301567U (en) | Backlight module, liquid crystal display module and terminal equipment | |
| CN2751224Y (en) | Contact type imaging sensor bar-shaped light source | |
| CN101370068B (en) | Contact type image sensor with high reading quality and low cost | |
| KR100497143B1 (en) | Light Emitting Diode Device for Night Shot | |
| JPH09247361A (en) | Linear illuminator | |
| CN201830340U (en) | Contact image sensor | |
| CN201467255U (en) | Rapid note scanning device | |
| CN211856964U (en) | Flexible uniform light source body | |
| CN2736935Y (en) | Image sensor | |
| CN210225483U (en) | Electronic device | |
| CN113691714A (en) | Electronic device | |
| CN203453880U (en) | LED (light emitting diode) mirror frame plane light source device | |
| CN207906902U (en) | Side entering type LED lighting gain module | |
| CN102034295B (en) | Contact type image sensor | |
| CN2745291Y (en) | Contact image sensor (CIS) | |
| CN101309338A (en) | Contact type image sensor | |
| CN201555185U (en) | Led lamp circuit board with reflection layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020501 Termination date: 20100604 |