CN1307242A

CN1307242A - The scanning device whose upper wing is coplanar with the scanning surface

Info

Publication number: CN1307242A
Application number: CN 00111487
Authority: CN
Inventors: 陈令
Original assignee: Avision Inc
Current assignee: Avision Inc
Priority date: 2000-01-21
Filing date: 2000-01-21
Publication date: 2001-08-08
Anticipated expiration: 2020-01-21
Also published as: CN1132403C

Abstract

The invention is a scanning device with base upper wing arranged coplanar with scanning surface, composed of scanning glass, casing and base, so that the position of optical element on the base and the position of relative element such as sliding shaft can be set from the surface of base upper wing without considering the influence of error degree of other element size, which is beneficial to the alignment operation of optical element in the manufacturing process and assembly process, and the error degree can be reduced compared with the prior art, therefore, the invention is better than the prior art in the accuracy of relative position between optical elements in the assembled scanning device, and improves the accuracy of output signal of the finished scanning device.

Description

The coplanar scanister of upper pedestal airfoil and scanning plane

The present invention is relevant a kind of scanister, especially a kind of upper pedestal airfoil and the coplanar scanister of scanning plane.The present invention is an illustrative example with the sheet metal pedestal of two optics modules, is not limited to the application of two optics modules during application, and the technology of the pedestal of single optical module and shell unification also can directly be utilized the invention process.

Fig. 1 is that the pedestal and the scanning plane of prior art is not the synoptic diagram that copline is settled.

In the scanister that shows two optical mode groups, pedestal 10 is mounted with fixing Image Sensor 18, the two side 17 of pedestal 10 is provided with slip axis hole 15 (please refer to Fig. 2), the usefulness of sliding axle 16 arrangements is provided, 16 of sliding axles are to settle thereon for two portable optics modules in two optics module scanister (be not shown in graphic in), so that slidably reciprocate capture.And because in the scanister of two optics modules, include two groups of portable optics modules and a sensing element 18 that is fixed on the pedestal 10, add up to three groups of optical facilities when scanning sensing, all relative motion can be arranged each other, as long as therefore have the light path of optical facilities to depart to some extent, then the quality of scanning imagery just is greatly affected; The scanister of relative single optics module is because of in all optical facilities all the are installed in single optics module, each optical facilities does not have relative motion fully in scanning process, therefore having light path hardly departs from the phenomenon that causes image quality not good, so the position stability degree between each optical facilities of the scanister of two optics modules just seems very important, in order to improve the position stability degree of Image Sensor 18 and sliding axle 16, so material that pedestal 10 uses, the degree of stability of the then necessary contraction of expanding is preferable, mainly be to use the sheet metal material at present, if develop the other materials of high stability, then also be to change the material that uses those high stabilities.So, used sheet metal pedestal 10, then the outside must be again with shell 11 as outer packaging, increase attractive in appearance on the one hand, provide scanning glass 12 carryings to use on the one hand, interface between scanning glass 12 and the sheet metal pedestal 10 also is provided simultaneously, because very high being not suitable for of the sheet metal hardness of pedestal 10 directly is connected with scanning glass 12, prior art all can be at sheet metal pedestal 10 and the scanning glass 12 middle buffer elements that are mounted with, avoid sheet metal pedestal 10 directly to contact, in order to avoid the hardness of sheet metal pedestal 10 is damaged scanning glass 12 with scanning glass 12.Or sheet metal pedestal 10 and scanning glass 12 separated, as shown in FIG., promptly be that shell 11 connects face 114 carrying scanning glasses 12 with the L type, sheet metal pedestal 10 and scanning glass 12 are directly joined.The device that pedestal 10 and scanning glass 12 become " copline arrangement " is not seen in this arrangement of prior art.Thus, the position of the Image Sensor 18 above calculating is positioned at pedestal 10 just must be considered to be mounted with the degree of error of buffer element in the middle of sheet metal pedestal 10 and the scanning glass 12 more.

Fig. 2 is the stereographic map of the pedestal 10 among prior art Fig. 1;

The stereographic map of the pedestal 10 in its displayed map 1, pedestal 10 tops carry sensing element 18, and there is susceptor edge wall 17 both sides, and susceptor edge wall 17 is provided with slip axis hole 15 provides sliding axle 16 to settle usefulness.Pedestal 10 is provided with upper limb 14, and upper limb 14 is provided with pedestal fixed orifice 103, and the top of the upper surface 142 of the solid pedestal 10 of screw 13 spiral shells is provided.The prior art that had not had is that the upper surface 142 that the upper surface 122 with scanning glass 12 is positioned to upper pedestal airfoil 14 is " coplanar ".

The purpose of this invention is to provide a kind of optical precision degree that improves product, simplify the assembling of product and the upper pedestal airfoil and the coplanar scanister of scanning plane of manufacturing process.

The object of the present invention is achieved like this, the present invention mainly is made up of parts such as scanning glass, shell and pedestals, the present invention is designing

sheet metal pedestal

10 and 12 one-tenth of scanning glasses " coplanar device ", the load-carrying unit of scanning glass 12 is mainly at shell 11, and design makes sheet metal pedestal 10 of the present invention and scanning glass 12 be the copline arrangement.

Illustrated simple declaration

Fig. 1 is that the pedestal and the plane of scanning motion of prior art is not the synoptic diagram that copline is settled;

Fig. 2 is pedestal 10 stereographic maps among prior art Fig. 1;

Fig. 3 is the embodiment of the invention one, the synoptic diagram that the upper surface copline of the upper surface of upper pedestal airfoil and scanning glass is settled;

Fig. 4 is the embodiment of the invention two, and pedestal divides two stereographic map;

Fig. 5 is three, two fixing stereographic maps with upper limb of the embodiment of the invention;

Fig. 6 is four, three fixing stereographic maps with upper limb of the embodiment of the invention;

Fig. 7 is the embodiment of the invention five, the synoptic diagram that the lower surface of upper pedestal airfoil and scanning glass upper surface copline are settled;

Fig. 8 is the embodiment of the invention six, the synoptic diagram that the upper surface of upper pedestal airfoil and scanning glass lower surface copline are settled;

Fig. 9 is the embodiment of the invention seven, the synoptic diagram that the lower surface of upper pedestal airfoil and scanning glass lower surface copline are settled;

Figure 10 is the embodiment of the invention eight, and the present invention is applied to the stereographic map of the embodiment of two optics modules.

With reference to accompanying drawing, in conjunction with the embodiments the present invention is elaborated.

With the difference of Fig. 1 prior art, only be that the upper surface 142 of the single upper pedestal airfoil 14 of Fig. 3 is settled with upper surface 122 coplines of scanning glass.

Single pedestal 10 has upper limb 14, and upper limb 14 has upper surface 142; Scanning glass 12 has upper surface 122, and the plane of the lower surface 113 by the shell upper limb is an interface, connects pedestal 10, makes 122 one-tenth coplines arrangements of upper surface of upper surface 142 with the scanning glass of upper pedestal airfoil 14.The upper surface 122 of scanning glass promptly is the calculating reference field of optical element relative position, because light source irradiation is handled by progressive to the later reflection ray of scanning object, settle the position of optical element promptly is closely related position in scanning plane, therefore, when the upper surface 142 of upper pedestal airfoil is copline with scanning glass upper surface 122, be placed on the single pedestal 10 optical element for example the position calculation of Image Sensor 18 and sliding axle 16 just seemed simply, as long as the upper surface 142 with upper pedestal airfoil serves as to calculate reference field, settle optical element, needn't consider the scale error degree of pedestal 10 composition element in addition, can improve the degree of accuracy of product like this, also simplify the processing procedure and the assembling of entire product, improve the optical precision degree of entire product, obtain preferable image output.

Its material with the not load-carrying unit of the pedestal 10 of Fig. 3 is saved need not, can adopt the separate type pedestal, here adopt the two-part pedestal, during design that left side pedestal 20 and the right pedestal 23 changes, can just there be the local part of load-carrying unit to hollow out, to save material cost in the bottom surface of pedestal yet.

Left side pedestal 20 has slip axis hole 15 provides Image Sensor 18 and sliding axle 16 to settle usefulness, has first upper limb, 22, the first upper limbs 22 and has upper surface 222 and pedestal fixed orifice 203.The right pedestal 23 has slip axis hole 15 provides sliding axle 16 to settle usefulness, has first upper limb, 24, the first upper limbs 24 and has upper surface 242 and pedestal fixed orifice 203.During assembling, it is copline that the upper surface 242 of the upper surface 222 of the left side first upper limb and the right first upper limb is settled the upper surface with scanning glass, promptly finishes the present invention.

It increases by the second above upper limb of a slice for the single upper limb of the two-part pedestal of Fig. 4, so that improve the degree of stability of pedestal.Left side pedestal 20 increases by second upper limb 26, the second upper limbs 26 have upper surface 262 and its seat 23 increases by second upper limb 28, the second upper limbs 28 of pedestal fixed orifice 203 the right have upper surface 282 and pedestal fixed orifice 203.During assembling, with the upper surface 242 of first upper limb 24 of the upper surface 262 of the upper surface 222 of first upper limb of left side pedestal 20, second upper limb, the right pedestal 23, the upper surface 282 of second upper limb 28, arrangement is a copline with scanning glass upper surface 122, promptly finishes the present invention.

Fig. 6 is four, three fixing stereographic maps with upper limb of the embodiment of the invention.

Diagram shows that the present invention can adopt three independently separate type pedestals, so that save the material of pedestal, comprise left side pedestal 21, intermediate base 25 and the right pedestal 23, intermediate base 25 mainly is to be used for carrying Image Sensor 18, left side pedestal 21 provides fixed orifice 15 (to be covered by upper limb, so, show among the figure) and the fixing left side usefulness of sliding axle 16, the right pedestal 23 provides fixedly the right usefulness of sliding axle 16 of fixed orifice 15.

Fig. 7 is the embodiment of the invention five, the synoptic diagram that the lower surface of upper pedestal airfoil and scanning glass upper surface copline are settled.

Being alternate embodiment of the present invention, is that the lower surface 104 with upper pedestal airfoil 14 is arranged as copline with scanning glass upper surface 122.This is lower surface 104 with upper pedestal airfoil 14 embodiment during as optical reference plane, and effect and last embodiment are similar.

Fig. 8 is the embodiment of the invention six, the synoptic diagram that the upper surface of upper pedestal airfoil and scanning glass lower surface copline are settled.

Being alternate embodiment of the present invention, is that the upper surface 112 with upper pedestal airfoil 14 is arranged as copline with scanning glass lower surface 124, and this is the embodiment of thickness during as optical reference plane that upper surface 112 with upper pedestal airfoil 14 adds scanning glass 12.Effect and last embodiment are similar, but increase the scale error of scanning glass thickness, are a not good enough embodiment.

Fig. 9 is the embodiment of the invention seven, the synoptic diagram that the lower surface of upper pedestal airfoil and scanning glass lower surface copline are settled.

Be alternate embodiment of the present invention, be that lower surface 114 with upper pedestal airfoil 14 is arranged as copline with scanning glass lower surface 124, this is the embodiment of thickness during as optical reference plane that lower surface 114 with upper pedestal airfoil 14 adds scanning glass 12, effect and last embodiment are similar, but increasing the scale error of scanning glass thickness, is a not good enough embodiment.

Diagram is a stereogram of bottom view, scanning glass 12 over there, single pedestal 30 is in order to carrying Image Sensor 18 (not shown)s, upper pedestal airfoil 36 has pedestal fixed orifice 303, provides pedestal 30 fixing shell 11 usefulness together.Sliding axle 16 is fixed in shell 11 by slip axis hole 15, provides two optics modules to slide and uses.

Compared with prior art, the present invention can illustrate that with the foregoing description the present invention has the optical precision degree that improves product really, simplifies the assembling and the effects such as manufacturing process, saving material of product.

Claims

1. A scanning device in which the upper wing of the base is coplanar with the scanning surface, which is mainly composed of scanning glass, a casing and a base; it is characterized in that: wherein the base (10) has an upper wing (14), and the upper wing (14) has an upper surface (142); the scanning glass (12) has an upper surface (122), and the plane of the lower surface (113) of the upper wing of the housing is an interface, connecting the base (10), the upper wing of the base (14) The upper surface (142) of the scanning glass (12) is coplanar with the upper surface (122) of the scanning glass (12).

2. The scanning device in which the upper wing of the base is coplanar with the scanning surface according to claim 1, wherein the upper surface (112) of the upper wing (14) of the base is coplanar with the lower surface (124) of the scanning glass. flat.

3. The scanning device in which the upper wing of the base is coplanar with the scanning surface according to claim 1, wherein the lower surface (104) of the upper wing (14) of the base is coplanar with the upper surface (122) of the scanning glass flat.

4. The scanning device in which the upper wing of the base is coplanar with the scanning surface according to claim 1, wherein the lower surface (114) of the upper wing (14) of the base is coplanar with the lower surface (124) of the scanning glass. flat.

5. The scanning device according to claim 1, 2, 3 or 4, wherein the upper wing of the base is coplanar with the scanning surface, wherein the scanning device refers to a dual optical module scanning device.

6. The scanning device according to claim 1, 2, 3 or 4, wherein the upper wing of the base is coplanar with the scanning surface, wherein the scanning device refers to a single optical module scanning device.

7. The scanning device in which the upper wing of the base is coplanar with the scanning surface according to claim 1, 2, 3 or 4, wherein the base is arranged on a single seat (10). An image sensing element (18) and a sliding shaft (16).

8. The scanning device in which the upper wing of the base is coplanar with the scanning surface according to claim 1, 2, 3 or 4, wherein the base is arranged on a single base (30). The image sensing element (18), the sliding shaft (16) is fixed to the casing (11) through the sliding shaft hole (15).

9. The scanning device according to claim 1, 2, 3 or 4, wherein the upper wing of the base is coplanar with the scanning surface, wherein the base is composed of a separate base.

10. The scanning device in which the upper wing of the base is coplanar with the scanning surface according to claim 1, 2, 3 or 4, wherein the separate base refers to the left base (20). An image sensing element (18) and a sliding shaft (16) are arranged, and the sliding shaft (16) is arranged on the right base (23).

11. The scanning device in which the upper wing of the base is coplanar with the scanning surface according to claim 1, 2, 3 or 4, wherein the separate base refers to the left base (21). A sliding shaft (16) is arranged, an image sensing element (18) is arranged on the middle base (25), and a sliding shaft (16) is arranged on the right base (23),