CN1324345C

CN1324345C - Optical assembly with movable reflector

Info

Publication number: CN1324345C
Application number: CNB031202551A
Authority: CN
Inventors: 陈世煌
Original assignee: TRANSPACIFIC IP Pte Ltd
Current assignee: Transpacific IP Pte Ltd.
Priority date: 2003-03-06
Filing date: 2003-03-06
Publication date: 2007-07-04
Anticipated expiration: 2023-03-06
Also published as: CN1527092A

Abstract

The present invention relates to an optical assembly provided with a movable reflector. The present invention is used for a scanner to scan a file to be scanned. The optical assembly comprises a first carrier, a second carrier and a third carrier, wherein the first carrier is provided with a first reflector, a lens and a photoelectric sensing element; the first carrier moves along the scanning direction to scan the file to be scanned; the second carrier is provided with a second reflector, and the second carrier moves in corresponding to the first carrier along the scanning direction; the third carrier is provided with a third reflector, and the third carrier moves in corresponding to the first carrier along the scanning direction; the first carrier is positioned between the second carrier and the third carrier, and distance between the second carrier and the third carrier maintains a fixed value in the scanning process; the image light of the file to be scanned is focused by a lens to be imaged to the photoelectric sensing element after reflected orderly by the first reflector, the second reflector and the third reflector.

Description

Has the movably optical module of catoptron

(1) technical field

The invention relates to a kind of optical module, and particularly have a movably optical module of catoptron relevant for a kind of.

(2) background technology

In the middle of numerous peripheries of PC, scanner one of the basic outfit of can saying so.Generally speaking, on the market its function of scanner and the equal difference of quality of scan image is little now.Therefore, the volume of scanner can effectively be dwindled, and then its space that occupies is diminished,, become one of emphasis development project of scanner research staff then being used more easily.

Please refer to Fig. 1, it is the synoptic diagram of traditional optical module.Include carrier 110 and guide member 120 in traditional optical module 100.Then dispose reflector group, lens and photovoltaic sensing element (not shown) in the carrier 110.

Carrier 110 is coupled on the guide member 120, and can move around in the direction of guide member 120 upper edge direction of scanning D, to scan file to be scanned.

When scanning was carried out, the image light 130 of file to be scanned (can be the reflected light or the transmitted light of file to be scanned) entered in the carrier 110.After image light 130 reflection via the reflector group that forms by multi-disc reflector group structure earlier, received by photovoltaic sensing element through lens focus.

Each catoptron, lens and photovoltaic sensing element in the reflector group all are fixed and are disposed in the carrier 110.Its purpose is to keep the image light sent from file to be scanned, from file to be scanned, through each mirror reflects and the preceding light path of the lens that arrive, and lens to the back light path of photovoltaic sensing element all to be maintained be a fixed value.Just can obtain clear and a scan image that quality is good with this.But, because carrier 110 ccontaining all catoptrons, lens and photovoltaic sensing element, so that carrier 110 is had on volume is bigger, take up space.

By above as can be known, the volume of carrier 110 is excessive, the related scanner that also can influence ccontaining carrier 110.Therefore, the overall volume of scanner also just and then can't effectively be dwindled.And traditional scan components can't strengthen because of carrying on the back Jiao, so can't scan the file to be scanned with large-size.

(3) summary of the invention

In view of this, purpose of the present invention is exactly that a kind of movably optical module of catoptron that has is being provided, the overall volume of scanner is effectively dwindled, allow to be used by the user more easily, and make scanner can have the file to be scanned of large-size in order to scanning.

According to above-mentioned purpose, of the present invention have a movably optical module of catoptron, is used in the scanner to scan file to be scanned, comprise: first carrier, have first catoptron, lens and photovoltaic sensing element, this first carrier is to move along the direction of scanning, to scan file to be scanned; Second carrier has second catoptron, and this second carrier is to relatively move along direction of scanning and the generation of first carrier; And the 3rd carrier, having the 3rd catoptron, this 3rd carrier is can produce along direction of scanning and first carrier relatively move.Wherein, first carrier is between second carrier and the 3rd carrier, and the distance between second carrier and the 3rd carrier is to keep fixed value in scanning process, the image light of file to be scanned after the reflection of first catoptron, second catoptron and the 3rd catoptron, images in photovoltaic sensing element through lens focus in regular turn.

For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly and conjunction with figs. are elaborated as follows.

(4) description of drawings

Fig. 1 is the synoptic diagram of traditional optical module.

Fig. 2 A is the movably structural representation of the optical module of catoptron that has according to preferred embodiment of the present invention.

Fig. 2 B is the side view of Fig. 2 A.

Fig. 3 A is that optical module of the present invention corresponding to Fig. 2 A and 2B is in the synoptic diagram of the relative position of each carrier of scanning process one.

Fig. 3 B is that optical module of the present invention corresponding to Fig. 2 A and 2B is in the synoptic diagram of the relative position of each carrier of scanning process two.

Fig. 4 is the side view according to another kind of mirror arrangement mode in the optical module with catoptron movably of preferred embodiment of the present invention.

Fig. 5 A is the optical module with catoptron movably of the present invention in having the structural representation of bigger back of the body when burnt.

Fig. 5 B is the optical module with catoptron movably of the present invention in having the another kind of structural representation of bigger back of the body when burnt.

(5) has the body embodiment

Provided by the invention have a movably optical module of catoptron, has three carriers, is different from the traditional optical module that only has a big carrier.Optical module of the present invention can be so that the smaller volume of the scanner of ccontaining carrier.And can under the situation that does not increase carrier, on the carrier of ccontaining lens and photovoltaic sensing element, between lens and photovoltaic sensing element, dispose catoptron, burnt to increase the back of the body, make scanner can see through the file to be scanned that this optical module scanning has large-size.

Please be simultaneously with reference to Fig. 2 A and Fig. 2 B.Fig. 2 A is the movably structural representation of the optical module of catoptron that has according to preferred embodiment of the present invention, and Fig. 2 B is the side view of Fig. 2 A.Optical module 200 can be used in the scanner to scan file to be scanned, and optical module 200 includes carrier 210,220 and 230, guide member 240 and fixture 250.

210 of carriers have catoptron 212, lens 214 and photovoltaic sensing element 216.Carrier 210 is can be along direction of scanning D (that is axial direction of guide member 240), and moves on the guide member 240 that couples with it, to scan file to be scanned.

Carrier 220 has catoptron 222 and 224.Carrier 220 is to relatively move with carrier 210 generations on the guide member 240 that couples with it along direction of scanning D.

Carrier 230 is identical with carrier 220, has two-mirror equally, and it is respectively catoptron 232 and 234.Carrier 230 also is to relatively move with carrier 210 generations on the guide member 240 that couples with it along direction of scanning D.

As illustrating among Fig. 2 A and Fig. 2 B, the image light 260 of file to be scanned is in regular turn after the reflection of catoptron 212,222,224,232 and 234, focuses on and images on the photovoltaic sensing element 216 through lens 214.

The preceding light path of image light 260 need be maintained changeless optical property, that is the summation of the distance of 234 of catoptron 222 and 212 of catoptrons, catoptron 232 and 224 of catoptrons and lens 214 and catoptrons must be kept a definite value.Therefore, by carrier 210 is disposed between carrier 220 and the carrier 230, and make the distance between carrier 220 and the carrier 230 in the process of scanning, keep a fixed value, then can reach the purpose that the preceding light path of image light 260 remains unchanged.Keep carrier 220 and then can reach by the fixture 250 that is connected the two with the distance of 230 of carriers is constant, fixture shown in the diagram 250 is to pass carrier 210 and connection carrier 220 and carrier 230.Carrier 210 can be on fixture 250, move with respect to carrier 220 and carrier 230, but 230 of carrier 220 and carriers in scanning process because of being connected of fixture 250, make between it to have relative displacement.

Please refer to Fig. 3 A and Fig. 3 B, is the synoptic diagram corresponding to optical module of the present invention relative position of each carrier in scanning process of Fig. 2 A and 2B.As shown in FIG., in scanning process, carrier 210,220 and 230 is all can move around along direction of scanning D.230 of carrier 220 and carriers are the distances (can realize by the fixture among Fig. 2 A 250) that is maintained X+Y all the time, (scheme 3B figure by 3A) when the distance of 230 of carrier 210 and carriers increases to X+a by X, the distance that carrier 210 and carrier are 220 will be reduced to Y-a (scheming 3B by 3A schemes) by Y.

Please be simultaneously with reference to Fig. 2 B and Fig. 4.Fig. 4 is the side view according to another kind of mirror arrangement mode in the optical module with catoptron movably of preferred embodiment of the present invention.Under the situation of light path, two catoptrons 222,224 in the carrier 220 can replace by monolithic catoptron 422 originally before not changing, and two catoptrons 232,234 in the carrier 230 then can replace by monolithic catoptron 432.The configuration mode of this kind catoptron can make the decreased number of catoptron, also can make the carrier volume-diminished of ccontaining catoptron.

Please refer to Fig. 5 A and Fig. 5 B, they are optical modules with catoptron movably of the present invention in having the structural representation of bigger back of the body when burnt.Usually when desiring the bigger file to be scanned of scan size, need have bigger back of the body Jiao, that is the distance of lens and photovoltaic sensing element must strengthen.This can be realized by the structure as shown in Fig. 5 A or Fig. 5 B.

As shown in Fig. 5 A, under the situation of the volume that does not increase carrier 210, some adjustment can be done in the position at lens 214 and photovoltaic sensing element 216 places, and on carrier 210, dispose catoptron 512 in addition, or as can disposing catoptron 514 and catoptron 516 respectively among Fig. 5 B on the different both sides of carrier 210, the image light 260 that focuses on through lens 214 in order to reflection is to photovoltaic sensing element 216.It is burnt to use this kind mode can effectively increase the back of the body, and optical module promptly can be used to scan the file to be scanned with large-size.

Above-mentioned scanner can be reflective or the image analyzer of transmission-type; Guide member 240 can be the member that mandrel rod or any other can make carrier move around along the direction of direction of scanning D; Fixture 250 can be to connect carrier 220 with carrier 230 and can make and can't produce relative displacement between it and not hinder the therebetween mobile any member of carrier 210; Photovoltaic sensing element then can be charge coupled cell (charge coupled device, CCD) or complementary metal oxide semiconductor (CMOS) sensor (complementary metal oxide semiconductor sensor, CMOS sensor).

The invention described above have that movably the optical module of catoptron and traditional optical module are compared (carrier that traditional optical module only has a large volume), be provided with because of the multi-disc catoptron having been moved in carrier 220 and the carrier 230 in the carrier 210 of the present invention, so its thickness along the direction of direction of scanning D can be very thin.And in carrier 220 and the carrier 230, because of only disposing catoptron, so thickness can also be very thin.And on height dimension, each carrier among Fig. 2 B must will come for a short time compared with the carrier of traditional optical assembly, and each carrier among Fig. 4 then can be littler on height dimension.And, then can make the burnt increasing of the back of the body, with the file to be scanned of scanning large-size by disposing catoptron on the carrier 210.

The above embodiment of the present invention disclosed has the movably optical module of catoptron, and the advantage that has is: can make that the scanner of ccontaining optical module is effectively dwindled on volume, it is more convenient to allow the user be able in the use.In addition, then also can scan the file to be scanned of large-size.

In sum; though the present invention discloses as above with embodiment; yet it is not in order to limit the present invention; any person skilled in the art scholar; without departing from the spirit and scope of the present invention; when can doing various changes and replacement, so protection scope of the present invention is when looking being as the criterion that accompanying Claim defines.

Claims

1. one kind has the movably optical module of catoptron, is to be used for the one scan device to scan a file to be scanned, it is characterized in that this optical module comprises:

One first carrier has one first catoptron, lens and a photovoltaic sensing element, and this first carrier is to move along the one scan direction, with this file to be scanned of scanning;

One second carrier has one second catoptron, and this second carrier is to relatively move along this direction of scanning and the generation of this first carrier; And

One the 3rd carrier has one the 3rd catoptron, and the 3rd carrier is to relatively move along this direction of scanning and the generation of this first carrier;

Wherein, this first carrier is between this second carrier and the 3rd carrier, and the distance between this second carrier and the 3rd carrier is to keep fixed value in scanning process, one image light of this file to be scanned is in regular turn after the reflection of this first catoptron, this second catoptron and the 3rd catoptron, images in this photovoltaic sensing element through this lens focus.

2. optical module as claimed in claim 1 is characterized in that, also comprises a guide member, and this first carrier, this second carrier and the 3rd carrier are to couple with this guide member respectively, and can move on this guide member respectively.

3. optical module as claimed in claim 1 is characterized in that, also comprises a fixture, and this fixture makes the distance between this second carrier and the 3rd carrier keep fixed value in scanning process in order to connect this second carrier and the 3rd carrier.

4. optical module as claimed in claim 1 is characterized in that, also comprises one the 4th catoptron, and the 4th catoptron is to be disposed on this first carrier, in order to reflection through this image light of this lens focus to this photovoltaic sensing element.

5. optical module as claimed in claim 1 is characterized in that, also comprises one the 5th catoptron and one the 6th catoptron, is the different both sides that are disposed at this first carrier respectively, in order to reflection through this image light of this lens focus to this photovoltaic sensing element.

6. optical module as claimed in claim 1 is characterized in that this photovoltaic sensing element is a charge coupled cell.

7. optical module as claimed in claim 1 is characterized in that, this photovoltaic sensing element is the complementary metal oxide semiconductor (CMOS) sensor.

8. scanner in order to scan a file to be scanned, comprising:

One has the movably optical module of catoptron, and it comprises:

9. scanner as claimed in claim 8 is characterized in that, also comprises a guide member, and this first carrier, this second carrier and the 3rd carrier are to couple with this guide member respectively, and can move on this guide member respectively.

10. scanner as claimed in claim 8 is characterized in that, also comprises a fixture, and this fixture makes the distance between this second carrier and the 3rd carrier keep fixed value in scanning process in order to connect this second carrier and the 3rd carrier.

11. scanner as claimed in claim 8 is characterized in that, also comprises one the 4th catoptron, the 4th catoptron is to be disposed on this first carrier, in order to reflection through this image light of this lens focus to this photovoltaic sensing element.

12. scanner as claimed in claim 8 is characterized in that, also comprises one the 5th catoptron and one the 6th catoptron, is the different both sides that are disposed at this first carrier respectively, in order to reflection through this image light of this lens focus to this photovoltaic sensing element.

13. scanner as claimed in claim 8 is characterized in that, this photovoltaic sensing element is a charge coupled cell.

14. scanner as claimed in claim 8 is characterized in that, this photovoltaic sensing element is the complementary metal oxide semiconductor (CMOS) sensor.