CN2555512Y - Shade structure of optical lens fixing device - Google Patents
Shade structure of optical lens fixing device Download PDFInfo
- Publication number
- CN2555512Y CN2555512Y CN 02242429 CN02242429U CN2555512Y CN 2555512 Y CN2555512 Y CN 2555512Y CN 02242429 CN02242429 CN 02242429 CN 02242429 U CN02242429 U CN 02242429U CN 2555512 Y CN2555512 Y CN 2555512Y
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- China
- Prior art keywords
- optical lens
- sleeve
- optical
- light
- annular projection
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Abstract
The utility model relates to a shading structure of optical lens fixing device, which is used in the optical scanning module. The utility model forms a ring-shaped protrusive rib inside the sleeve. One end adjacent the optical lens improves the imaging quality of optical sensor through shading the stray light seeping from optical lens and sleeve.
Description
Technical field
The utility model relates to the shading technology of optical lens stationary installation, relates in particular to a kind of being applied in the optical scanning module, avoids the light-shielding structure of the optical lens stationary installation of optical lens light leak.
Background technology
Input, processing and processing at image, become after a kind of popular interest, scanner just becomes one of basic outfit of many computer users, and it can be with the literal or the image document of file, magazine, books, picture etc., and scanning input computer is also handled.In various scanners, platform-type scanner is the most frequently used a kind of, and in platform-type scanner, the scan module moving mode of having pulled back since being is installed on transparent platform below, places file on the transparent platform with scanning.Scan module itself is not had power, therefore needs for example drive as gear trains such as servo motor, gear, belts.When desire uses a platform-type scanner to scan a file, file must be placed on the transparent platform, again the file cover plate be covered, smooth with the compressing file in transparent platform, scan then.
In existing optical scanning module (with reference to Fig. 1), comprise a light source 100, a reflector group 400, an optical lens 500, an optical sensor 600 (for example being charge coupled cell (CCD)) and a main body 700.Aforesaid light source 100, reflector group 400, optical lens 500, and optical sensor 600 etc. all are disposed in the main body 700.When scanning, light source 100 is that irradiation places the manuscript 200 on the light-passing board 300, obtains an image light through reflection or transmission.Reflector group 400 is combined by a plurality of catoptrons (401,402,403), and is configured on the light path of image light, manuscript 200 images can be imported in the reflector group 400, and the reflection of process reflector group 400 is resent to optical lens 500.The image light of the manuscript 200 that the reflector group 400 that can receive optical lens 500 is transmitted also images in charge coupled cell 600.Wherein, the stationary installation that has an optical lens in the main body 700; this stationary installation has a sleeve cylindraceous usually, and the early stage optical lens 500 general modes that promptly directly cooperate with axis hole directly are fixedly arranged in the sleeve of this stationary installation, shown in the front view of Fig. 3 a.
Yet the assembling fixed form regular meeting that axis hole cooperates has the phenomenon of axle center deviation to produce, and often makes optical lens 500 must repeat adjustment.Therefore, commonly used also have a kind of optical lens stationary installation 800, as shown in Figure 2, is disposed at shell 700 inside, and one-body molded with shell 700.Optical lens stationary installation 800 is the base of an approximate trapezoid, its front end has the optical lens sleeve 810 of a hollow, in order to fixed optics camera lens 500, this sleeve 810 has a fixation spring tab 812 in the below, the inboard of this fixation spring tab 812 has a protruding rib 814, is used for pushing down the optical lens 500 that inserts fixing.This optical lens 500 can move along the axis direction of sleeve 810, to adjust lens focus, shown in the front view of Fig. 3 b.After having adjusted lens focus, normally the mode with a glue or fixed screw fixes optical lens 500.So, by the locking of the resilient engagement screw of fixation spring tab 812, and protruding rib 814 and 500 of optical lens be and contact, and can adjust its shaft core position of location comparatively accurately.
Also just like shown in Fig. 3 c, the 3d, increasing protruding rib 814 is two, perhaps sleeve 810 is designed to subtriangular shape in the known designs, makes 500 of sleeve 810 and optical lens form at 3 and contacts, and locatees its shaft core position with more accurate adjustment.No matter yet be that a kind of mode, as shown in Figure 4, usually the internal diameter of sleeve 810 can be than the external diameter of optical lens 500 greatly in order to assembling, make 500 of sleeve 810 and optical lens form a gap 508 (hatched example areas among Fig. 3 a-3d), so can cause optical sensor 600 except receiving light source from camera lens 500, also can receive parasitic light (light leak) 101, cause influencing the image quality of image from above-mentioned gap 508.At the light leakage phenomena of this gap 508, generally can design in addition increases by a part and prevents parasitic light 101, however its man-hour with also can increase on cost is relative.
The utility model content
In order to overcome the deficiency on the existing project organization, the purpose of this utility model is the light-shielding structure that proposes a kind of optical lens stationary installation, its inboard in sleeve forms an annular projection rib, a wherein end of next-door neighbour's optical lens, with the parasitic light that bleeds in the gap of covering between optical lens and sleeve, improve the image quality of optical sensor.
In order to achieve the above object, the utility model proposes a kind of light-shielding structure of optical lens stationary installation, be applied in the optical scanner module, optical scanning module comprises an optical lens and an optical lens stationary installation at least, the optical lens stationary installation has a sleeve, the optical lens configuration is fixedly arranged in the sleeve, has a gap between optical lens and sleeve, and the light-shielding structure of optical lens stationary installation comprises:
One annular projection rib along sleeve radially, is formed at the cylindrical wall inboard of sleeve, a wherein end of next-door neighbour's optical lens, and the height of annular projection rib is greater than the width in gap.
The light-shielding structure of described optical camera lens device, annular projection rib and sleeve are one of the forming.
A kind of optical scanning module is applied in the optical scanner, and in order to scanning document, optical scanning module comprises at least:
One main body;
One light source is fixedly arranged on main body, in order to shot file, to obtain an image light;
One reflector group is fixedly arranged on main body, and is positioned on the light path of image light;
One optical lens stationary installation is fixedly arranged on main body, has a sleeve, has an annular projection rib in the sleeve, and the annular projection rib along sleeve radially is formed at the cylindrical wall inboard of sleeve;
One optical lens is disposed in the sleeve, and the end next-door neighbour annular projection rib of optical lens has a gap between optical lens and sleeve, and the gap is less than the height of annular projection rib, and optical lens is positioned on the light path of the image light after the reflector group reflection; And
One optical sensor is fixed in the shell, and is positioned on the light path behind the image transmittance optical lens.
Described optical scanning module, wherein optical lens stationary installation and main body are one of the forming.
Described optical scanning module, wherein annular projection rib and sleeve are one of the forming.
The utility model forms an annular projection rib as light-shielding structure in integrally formed mode in sleeve, save the cost of parts that other design one is used to cover spuious light leak, and can reach the effect of covering the spurious rays of being bled by the gap effectively.
Description of drawings
Fig. 1 is the side schematic view of existing optical scanning module;
Fig. 2 is the assembling stereogram of existing optical lens and sleeve;
Fig. 3 a-3d is the front assembled view of existing different optical camera lens and optical lens sleeve;
Fig. 4 is the assembling side sectional view of existing optical lens and optical lens sleeve;
Fig. 5 is the floor map of the utility model preferred embodiment optical scanning module;
Fig. 6 is the assembling stereogram of embodiment optical lens and sleeve;
Fig. 7 is the assembling side sectional view of embodiment optical lens and optical lens sleeve;
Fig. 8 is the assembling side sectional view of another embodiment optical lens and optical lens sleeve.
Embodiment
Please refer to Fig. 5, be the floor map of the utility model preferred embodiment optical scanning module.Similarly, optical scanning module comprises a light source 1100, a reflector group 1400, an optical lens 1500, main body 1700 and an optical sensor, such as being charge coupled cell (CCD) 1600.Wherein, above-mentioned light source 1100, reflector group 1400, optical lens 1500, and optical sensor 1600 etc. all are disposed in the main body 1700.When scanning, light source 1100 is that irradiation places the manuscript 1200 on the light-passing board 1300, obtains an image light 1110 through reflection or transmission.Reflector group 1400 is combined by a plurality of catoptrons (1401,1402,1403), and be configured on the light path of image light 1110, manuscript 1200 images can be imported in the reflector group 1400, the reflection of process reflector group 1400 is resent to optical lens 1500.The image light 1110 of the manuscript 1200 that the reflector group 1400 that can receive optical lens 1500 is transmitted also images in charge coupled cell 1600.
Similarly, shown in Fig. 6,7, have an optical lens stationary installation 1800 that is used to set firmly optical lens 1500 in the main body 1700, and this optical lens stationary installation 1800 has a sleeve 1810, optical lens 1500 promptly disposes and is installed in this sleeve 1810.Wherein, have an annular projection rib 1812 in the sleeve 1810 of the present utility model, it along sleeve 1810 radially is formed at the cylindrical wall inboard of sleeve 1810, and next-door neighbour's optical lens 1500 is towards an end of optical lens stationary installation 1800 inboards.The height of annular projection rib 1812 is greater than the width in the gap 1508 of 1810 in optical lens 1500 and sleeve, so, can utilize this annular projection rib 1812 to cover the parasitic light that may be bled by gap 1508 as a light-shielding structure.Wherein, because the formation of annular projection rib 1812, make to be slightly less than the diameter of optical lens 1500 in opening diameter herein in the sleeve 1810, but can not cover the image light 1110 that transmit via in the optical lens 1500.Again, annular projection rib 1812 is integrally formed with sleeve 1810/ optical lens stationary installation 1800, and optical lens stationary installation 1800 also can be with main body 1700 and makes in integrally formed mode.
Refer again to Fig. 8, above-mentioned annular projection rib 1812 can also be formed at sleeve 1810 outsides, and next-door neighbour's optical lens 1500 is towards an end in optical lens stationary installation 1800 outsides.By finding out clearly among Fig. 8 that annular projection rib 1812 can cover the parasitic light that may be bled by gap 1508 equally.
In sum, the utility model is in integrally formed mode, in sleeve, form an annular projection rib as light-shielding structure, save the cost of parts that other design one is used to cover spuious light leak, and can reach the effect of covering the spurious rays of bleeding effectively by the gap.Yet the device for image of any applied optics camera lens as long as it need cover the spurious rays of bleeding between optical lens and sleeve breasting face, all can be used light-shielding structure of the present utility model.
According to the introduction of above-mentioned embodiment of the present utility model as can be known, the utility model has following advantage at least: in integrally formed mode, in sleeve, form an annular projection rib as light-shielding structure, save the cost of parts that other design one is used to cover spuious light leak, and can reach the effect of covering the spurious rays of bleeding effectively by the gap.
Claims (5)
1. the light-shielding structure of an optical lens stationary installation, be applied in the optical scanner module, optical scanning module comprises an optical lens and an optical lens stationary installation at least, the optical lens stationary installation has a sleeve, the optical lens configuration is fixedly arranged in the sleeve, have a gap between optical lens and sleeve, it is characterized in that, the light-shielding structure of optical lens stationary installation comprises:
One annular projection rib along sleeve radially, is formed at the cylindrical wall inboard of sleeve, a wherein end of next-door neighbour's optical lens, and the height of annular projection rib is greater than the width in gap.
2. the light-shielding structure of optical camera lens device as claimed in claim 1 is characterized in that, annular projection rib and sleeve are one of the forming.
3. an optical scanning module is applied in the optical scanner,, it is characterized in that optical scanning module comprises at least in order to scanning document:
One main body;
One light source is fixedly arranged on main body, in order to shot file, to obtain an image light;
One reflector group is fixedly arranged on main body, and is positioned on the light path of image light;
One optical lens stationary installation is fixedly arranged on main body, has a sleeve, has an annular projection rib in the sleeve, and the annular projection rib along sleeve radially is formed at the cylindrical wall inboard of sleeve;
One optical lens is disposed in the sleeve, and the end next-door neighbour annular projection rib of optical lens has a gap between optical lens and sleeve, and the gap is less than the height of annular projection rib, and optical lens is positioned on the light path of the image light after the reflector group reflection; And
One optical sensor is fixed in the shell, and is positioned on the light path behind the image transmittance optical lens.
4. optical scanning module as claimed in claim 3 is characterized in that wherein optical lens stationary installation and main body are one of the forming.
5. optical scanning module as claimed in claim 3 is characterized in that wherein annular projection rib and sleeve are one of the forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02242429 CN2555512Y (en) | 2002-08-02 | 2002-08-02 | Shade structure of optical lens fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02242429 CN2555512Y (en) | 2002-08-02 | 2002-08-02 | Shade structure of optical lens fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2555512Y true CN2555512Y (en) | 2003-06-11 |
Family
ID=33715006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02242429 Expired - Fee Related CN2555512Y (en) | 2002-08-02 | 2002-08-02 | Shade structure of optical lens fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2555512Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100349036C (en) * | 2004-05-11 | 2007-11-14 | 宇东电浆科技股份有限公司 | Module of guiding light, and scanning device containing the module |
| CN100354672C (en) * | 2004-07-01 | 2007-12-12 | 嘉扬光学科技股份有限公司 | Image pick up device |
-
2002
- 2002-08-02 CN CN 02242429 patent/CN2555512Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100349036C (en) * | 2004-05-11 | 2007-11-14 | 宇东电浆科技股份有限公司 | Module of guiding light, and scanning device containing the module |
| US7576895B2 (en) | 2004-05-11 | 2009-08-18 | Hsi-Yu Chen | Light-guide module having light shielding structure |
| CN100354672C (en) * | 2004-07-01 | 2007-12-12 | 嘉扬光学科技股份有限公司 | Image pick up device |
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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 |