CN2749203Y

CN2749203Y - Fixing structure for spacer of CIS optical component

Info

Publication number: CN2749203Y
Application number: CN 200420042489
Authority: CN
Inventors: 苏铃达; 吕苑牧; 林明芳
Original assignee: Lingguang Technology Co ltd
Current assignee: Wuxi Creative Sensor Technology Co. Ltd.
Priority date: 2004-05-21
Filing date: 2004-05-21
Publication date: 2005-12-28
Anticipated expiration: 2014-05-21

Abstract

The utility model provides a fixing structure for a spacer of CIS optical components, which is arranged on a shell body of a CIS optical component and is used for fixing a spacer. The fixing structure comprises a containing socket, which is positioned on the shell body for containing the spacer, and at least one flange, which is positioned on one side of the containing socket. Wherein, with the flange protruding out of one side of the containing socket, the activity of the spacer inside the containing socket can be limited, so that the spacer can not fall out of the containing socket as placing the spacer inside the containing socket.

Description

The distant element fixed structure of CIS optical module

Technical field

Relevant distant element (spacer) fixed structure that refers to a kind of optical module of the utility model refers to a kind of use contact-type image sensing device (contact image sensor, CIS) the distant element fixed structure of the CIS optical module of technology especially.

Background technology

Contact-type image sensing device (contact image sensor, CIS) operation principle of assembly is that irradiate light that light source is produced is to contribution to be scanned, reflection through lens set, reassociate in charge coupled cell (charge-coupled device, CCD) or CMOS (Complementary Metal Oxide Semiconductor) (complementary metal oxide semiconductor, CMOS) after receiving by it on, utilize such photo-sensitive cell with the signal transition of light signal, and then produce analog or digital pixel (pixel) data for electricity.In the process that scans, because CCD can detect the light that zones of different on the image reflects varying strength, therefore utilize the principle of the more light of the less light of regional reflex darker on the paper, brighter regional reflex, the light wave that CCD reflected can be converted to the analog or digital data, this telecommunication signal can be directly proportional with light intensity, at last, re-use literal compatible or image scanning software and read in these data, and it is reassembled as the computer image file with CIS.

Because ripe photocontrol technology is dependent in excellent CIS capture performance, and is therefore not only important by the image quality that optical module obtained, influence one of main reason of CIS running performance especially.

At present the view finding method of the optical image of main flow is and aforementionedly is called as the contact-type image sensing device (it is with the Componentized kenel for contact image sensor, technology CIS), and light source, lens pillar, sensing substrate and shell etc. are combined.

Please refer to Fig. 1, it is the optical assembly structure figure that uses contact-type image sensing device technology in the prior art.Wherein, CIS optical module 10 is by diode light-source 11, lens pillar (Rod lens) 12, housing (housing) 13 and 14 common be combined intos of circuit board; And also has a photo-sensitive cell 141 that constitutes by CCD or CMOS on the circuit board 14.

In order to be used in the contact image scan device, multifunctional paper feeding machine, and copying machines etc., generally be that similar aforesaid CIS optical module 10 is inserted the inside of board, again by the sliding track mechanism of board inside and distant element (spacer) with the glass contact of CIS optical module 10 with scanning plane, and the smoothness of utilizing the thickness of spacer and spacer surface is kept the focal distance of scanning plane and CIS optical module 10, and CIS optical module 10 can also freedom be moved unimpededly when being close to glass, move and control the mechanism that focuses on to scan, make that scanning motion is smooth and easy and make that (modulation transfer function MTF) is maintained in specification limit video signal modulation transfer function.Like this, can carry out and remain on upstate smoothly in order to make these optics mechanism, the design of various spacer also just in response to and give birth to.

See also Fig. 2 (A) and (B), its be the end view that is respectively first kind of employed distant element of prior art, with and with the assembling of CIS optical module after top view.In Fig. 2 (B), be to make distant element 21 be fixed on the CIS optical module 22 by a glue mode or with the mode that distant element 21 makes hook; Then, utilize the smoothness properties on two salient points 211 on the

distant element

21 and 212 surfaces to make that CIS optical module 22 can be with respect to the glass (not shown) of scanner, multifunctional paper feeding machine or copying machines and move again.

See also Fig. 3 (A) and (B), its be the end view that is respectively second kind of employed distant element of prior art, with and with the assembling of CIS optical module after top view.In Fig. 3 (B), also be to make distant element 31 be fixed on the CIS optical module 32 by a glue mode or with the mode that distant element 31 makes hook; Utilize the smoothness properties on curved surface 311,312 surfaces on the distant element 31 to make that CIS optical module 32 can be with respect to the glass (not shown) of scanner, multifunctional paper feeding machine or copying machines and move again.

But when being close to glass as the CIS optical module of Fig. 2 and Fig. 3 and moving,

salient point

211 and 212 or the surface of

curved surface

311 and 312 and glass have bigger frictional force and produce, cause to move and have some setbacks and phenomenons such as damage or abrasion take place easily, at last, when abrasion excessively make

salient point

211 and 212 or during the less thick of

curved surface

311 and 312, will have influence on the CIS optical module at the mtf value in when running, make the optical characteristics extreme difference that becomes.

In order to overcome aforesaid disappearance, so industry proposes to substitute sliding type with roll mode in addition and makes that moving of CIS optical module is more smooth and easy, and its change method is for changing aforesaid

distant element

21 and 31 into the form of roller, roller bearing or ball.

See also Fig. 4 (A) and (B), its be the end view that is respectively the employed roller of the third prior art, with and with the assembling of CIS optical module after top view.In Fig. 4 (B), be that roller 41 directly is positioned in the middle of the storage tank 421 that CIS optical module 42 had, the characteristic of utilizing roller 41 to rotate again makes CIS optical module 42 to move with respect to the glass (not shown).

The design of this roller is owing to be to utilize the mode of rolling to move, smoothness when the frictional force of its contact-making surface is less and mobile is also preferable, therefore more can not damage the structure of roller itself, improve in aforementioned first and second kinds of prior arts the phenomenon of optical characteristics variation when causing the running of CIS optical module because of the abrasion situation.

Yet, because the spacer size of this roller type is less and can't fix with a glue or general fashion, drop out storage tank 421 in the assembling process of therefore being everlasting, cause the sizable puzzlement of assembler on the production line.

Comprehensive above-mentioned three kinds of prior arts as can be known, make the CIS optical module when scanning, can move and reduce the abrasion phenomenon of spacer swimmingly, must change the spacer of traditional type into the rolling kenel by the slip kenel, but the spacer of rolling kenel has the shortcoming that easily drops out outside the groove when assembling, has reduced the speed of assembling operation and convenient.

The utility model content

The purpose of this utility model is distant element (spacer) fixed structure that proposes a kind of CIS optical module, be ccontaining cell wall increase baffle arrangement (spacer capture), allow roller, roller bearing or ball can put into storage tank easily and can not drop out outside the groove again at roller, roller bearing or ball.

According to a conception of the present utility model, a kind of roller (spacer) fixed structure of CIS optical module is proposed, be arranged on the housing of a CIS optical module, in order to fix a roller, this roller comprises a roller body that reaches around this, this fixed structure comprises: a storage tank is positioned on this housing, in order to ccontaining this roller body; One group of bearing groove lays respectively at two sides of this storage tank, in order to ccontaining this axle; And at least one flange, be positioned at a side of this storage tank; Wherein, utilize this flange to protrude from a side of this storage tank,, make this roller is being placed in this storage tank that this roller can not drop out this storage tank to limit this interior activity in this group bearing groove.

According to above-mentioned conception, wherein this CIS optical module is use contact-type image sensing device (ContactImage Sensor, CIS) the image sensing optical module of technology.

According to above-mentioned conception, wherein this housing, this storage tank, this group bearing groove and this flange are to constitute in one-body molded mode.

According to above-mentioned conception, wherein the material of this housing, this roller, this storage tank, this group bearing groove and this flange is a plastic cement.

According to above-mentioned conception, wherein this CIS optical module is to move with respect to this glass in a rolling on glass by this roller, to scan.

According to above-mentioned conception, wherein this flange has an oblique side, makes the sectional area that enters this storage tank diminish gradually in the scope of this oblique side.

According to another conception of the present utility model, a kind of distant element (spacer) fixed structure of CIS optical module is proposed, be arranged on the housing of a CIS optical module, in order to fix a distant element, this fixed structure comprises: a storage tank is positioned on this housing, in order to ccontaining this distant element; And at least one flange, be positioned at a side of this storage tank; Wherein, utilize this flange to protrude from a side of this storage tank,, make this distant element is being placed in this storage tank that this distant element can not drop out this storage tank to limit of the interior activity of this distant element in this storage tank.

According to above-mentioned conception, wherein this housing, this storage tank and this flange are to constitute in one-body molded mode.

According to above-mentioned conception, wherein the material of this housing, this distant element, this storage tank and this flange is a plastic cement.

According to above-mentioned conception, wherein this distant element is one of to be selected from a roller, a roller bearing and the ball.

According to above-mentioned conception, wherein this CIS optical module is to move with respect to this glass in a rolling on glass by this distant element, to scan.

According to above-mentioned conception, wherein this flange has an oblique side, makes the sectional area that enters this storage tank diminish gradually at the interior of scope of this oblique side.

For further specifying above-mentioned purpose of the present utility model, design feature and effect, the utility model is described in detail below with reference to accompanying drawing.

Description of drawings

Fig. 1 is the optical assembly structure figure that uses the CIS of contact-type image sensing device technology in the prior art;

Fig. 2 (A) is the end view of first kind of employed distant element of prior art;

Fig. 2 (B) is the distant element of Fig. 2 (A) and the top view after the assembling of CIS optical module;

Fig. 3 (A) is the end view of second kind of employed distant element of prior art;

Fig. 3 (B) is the distant element of Fig. 3 (A) and the top view after the assembling of CIS optical module;

Fig. 4 (A) is the end view of the employed roller of the third prior art;

Fig. 4 (B) is the roller of Fig. 4 (A) and the top view after the assembling of CIS optical module;

Fig. 5 (A) is the schematic diagram of distant element fixed structure one preferred embodiment of the utility model CIS optical module;

Fig. 5 (B) is the top view that the assembling of Fig. 5 (A) is finished;

Fig. 6 (A) is the schematic diagram of another preferred embodiment of distant element fixed structure of the utility model CIS optical module; And

Fig. 6 (B) is the top view that the assembling of Fig. 6 (A) is finished.

Embodiment

See also Fig. 5 (A) and 5 (B), it is the schematic diagram of distant element fixed structure one preferred embodiment of the utility model CIS optical module.

In Fig. 5 (A), fixed structure 50 is to be arranged on the housing 51 of CIS optical module, in order to fixed idler whell 52, roller 52 comprises

axle

521 and 522 and the roller body 523 of threaded

shaft

521 and 522, fixed structure 50 be by storage tank 501,

bearing groove

502 and 503 and flange 504 constituted; Wherein, storage tank 501 is to be positioned on the housing 51, and in order to ccontaining roller body 523, and bearing

groove

502 and 503 lays respectively at two sides of storage tank 501, and in order to two

ends

521 and 522 of ccontaining axle, in addition, flange 504 is sides that are positioned at storage tank 501.

Roller 52 is being placed in the process of storage tank 501, must put a end into bearing groove 503 earlier earlier with axle 522, put axle 521 and roller body 523 into bearing groove 502 and storage tank 501 respectively again, perhaps the mode with extruding once is placed in roller 52 in the storage tank 501, then then utilize flange 504 to protrude from a side of storage tank 501, with the activity of restrictive axes 522 in bearing groove 503, make roller 52 can not drop out storage tank 501, shown in Fig. 5 (B).

In this embodiment, at first, employed CIS optical module is a use contact-type image sensing device (Contact Image Sensor, CIS) the image sensing optical module of technology, this CIS optical module can by roller 52 on a glass (not shown) rolling and move with respect to this glass, to scan; Secondly, housing 51, storage tank 501,

bearing groove

502 and 503 and flange 504 all be to utilize plastic cement to constitute in one-body molded mode; In addition, flange 504 has an oblique side 5041, and it is the inner inclination towards storage tank 501, makes the sectional area that enters storage tank 501 diminish gradually in the scope of oblique side 5041.

See also Fig. 6 (A) and 6 (B), it is the schematic diagram of another preferred embodiment of distant element fixed structure of the utility model CIS optical module.

In Fig. 6 (A), fixed structure 60 is to be arranged on the housing 61 of CIS optical module, in order to fixed idler whell 62, roller 62 comprises axle 621 and 622 and the roller body 623 of threaded shaft 621 and 622, fixed structure 60 be by storage tank 601, bearing groove 602 and 603 and flange 604 constituted; Wherein, storage tank 601 is to be positioned on the housing 61, and in order to ccontaining roller body 623, and bearing groove 602 and 603 is two sides that lay respectively at storage tank 601, and in order to two ends 621 and 622 of ccontaining axle, in addition, two flanges 604 are two sides that lay respectively at storage tank 601.

Different with aforesaid first embodiment is, roller 62 is being placed in the process of storage tank 601, only must by towards two openings 605 that go out paper once with axle 621 and 622 and roller body 623 put into respectively bearing groove 602 and 603 and storage tank 601 get final product, then, then utilize two flanges 604 to protrude from two sides of storage tank 601 respectively, with the activity of restrictive axes 621 and 622 in bearing groove 603 and 604, make roller 62 can not drop out storage tank 601, shown in Fig. 6 (B).

Identical with first embodiment, employed CIS optical module is to be a use contact-type image sensing device (Contact Image Sensor, CIS) the image sensing optical module of technology, this CIS optical module can by roller 62 on a glass (not shown) rolling and move with respect to this glass, to scan; Secondly, housing 61, storage tank 601, bearing groove 602 and 603 and two flanges 604 all are to utilize plastic cement to constitute in one-body molded mode; In addition, two flanges 604 also have an oblique side 6041 respectively, and it is the inner inclination towards storage tank 601, make the sectional area that enters storage tank 601 diminish gradually in the scope of oblique side 6041.

What deserves to be mentioned is,, represent the structure of distant element also can be not limited to roller among the embodiment, that is roller bearing or ball are also applicable as long as grasp spirit of the present utility model; In addition, the shape of flange and number with and the position that is positioned at storage tank all need not restriction, as long as can make roller, roller bearing or the ball put into can not drop out storage tank after the assembling.

In sum, the utility model is to make a flange (capture) in roller (spacer) storage tank on the housing of general CIS optical module as can be known, the production method of this flange is to design into when die sinking, utilizes this flange to drop out to prevent roller, roller bearing or ball; Its advantage is to make system manufacturer convenient easy again with ClS optical module and scanner, multifunctional paper feeding machine, copying machines assembling the time, and this design can be finished during in ejection formation at the assembling mechanism element of CIS optical module, both can produce in a large number, and need not to increase extra cost.

Though the utility model is described with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, under the situation that does not break away from the utility model spirit, also can make the variation or the replacement of various equivalences, therefore, as long as in connotation scope of the present utility model in the scope to the variation of the foregoing description, claims that modification all will drop on the application.

Claims

1. the distant element fixed structure of a CIS optical module is arranged on the housing of a CIS optical module, and in order to fix a roller, this roller comprises a roller body that reaches around this, it is characterized in that this fixed structure comprises:

One storage tank is positioned on this housing, in order to ccontaining this roller body;

One group of bearing groove lays respectively at two sides of this storage tank, in order to ccontaining this axle; And

At least one flange is positioned at a side of this storage tank;

Wherein, this flange protrudes from a side of this storage tank, to limit this interior activity in this group bearing groove.

2. fixed structure as claimed in claim 1 is characterized in that this housing, this storage tank, this group bearing groove and this flange are to constitute in one-body molded mode.

3. fixed structure as claimed in claim 2, the material that it is characterized in that this housing, this roller, this storage tank, this group bearing groove and this flange is a plastic cement.

4. fixed structure as claimed in claim 1 is characterized in that this CIS optical module is to move with respect to this glass in a rolling on glass by this roller, to scan.

5. fixed structure as claimed in claim 1 is characterized in that this flange has an oblique side, diminishes gradually in the scope of this oblique side so that enter the sectional area of this storage tank.

6. the distant element fixed structure of a CIS optical module is arranged on the housing of a CIS optical module, in order to fix a distant element, it is characterized in that this fixed structure comprises:

One storage tank is positioned on this housing, in order to ccontaining this distant element; And

At least one flange is positioned at a side of this storage tank;

This flange protrudes from a side of this storage tank, to limit the interior activity of this distant element in this storage tank.

7. fixed structure as claimed in claim 6 is characterized in that this housing, this storage tank and this flange are to constitute in one-body molded mode.

8. fixed structure as claimed in claim 7, the material that it is characterized in that this housing, this distant element, this storage tank and this flange is a plastic cement.

9. fixed structure as claimed in claim 7 is characterized in that this distant element is to be selected from one of a roller, a roller bearing and a ball.

10. fixed structure as claimed in claim 9 is characterized in that this CIS optical module is to move with respect to this glass in a rolling on glass by this distant element, to scan.

11. fixed structure as claimed in claim 7 is characterized in that this flange has an oblique side, diminishes gradually in the scope of this oblique side so that enter the sectional area of this storage tank.