CN201063158Y - Optical multipurpose image detecting structure - Google Patents

Abstract

The utility model relates to an optical and multifunctional image detection structure, which comprises a shell body, a track ball, an optical seat, a circuit board, a light-emitting component and an image sensor. The shell is for holding track ball; the optical seat is provided with a light separating mirror that is aslant arranged, and the separating mirror faces to part sphere of the tracking ball; a lens component is also arranged on the same side of the light separating mirror on the optical seat; the light-emitting component and the image sensor are electrically connected with a circuit board; the light-emitting element faces to the light separating mirror and the imagine sensor faces to the lens component. The light shaft produced by a projection source of the light-emitting element, can shoot on the sphere of the track ball through once or more than once reflection or transmission by the light separating mirror, enabling light sources to be evenly shot on the surface of the track ball and evenly capture images and enabling the image sensor to obtain full images and calculate complete displacement data.

Description

Optical multipurpose image detecting structure

Technical field

The utility model relates to a kind of optical multipurpose image detecting structure, especially refers to a kind of displacement and direction that captures trace ball, to calculate the optical multipurpose image detecting structure of a displacement data.

Background technology

Desktop or notebook computer, it can control the usefulness of the cursor displacement on the display by mouse or Trackball device.Use face with mouse, what the user used always is optical mouse, as shown in Figure 1, cut-open view for general optical mouse, it can move on a plane, when inner light-emitting component 81 can be projected to first reflecting surface 821 of a light guide plate 82 with light emitting source, promptly can be with on this source reflection to the second reflecting surface 822, reflection via second reflecting surface 822, light source can pass the opening of drain pan 83, be incident upon the surface of contact 84 that a nontransparent interface forms, it can be overlapping with image axle F, the image of image axle F focuses on through an eyeglass 85, make the image on the projective object image axle F of light source institute on an image sensor 86 fechtable surface of contact 84, make the correct image of image sensor 86 sustainable acquisitions, and then calculate the displacement and the direction of optical mouse exactly, and then control the cursor on the display by a circuit control unit (figure slightly).

Via above-mentioned, the pick-up image mode of optical mouse need make the optical axis R of the optical axis D of projection source and the pick-up image P that will intersect at a point on the image axle F of surface of contact 84, could make image sensor 86 correctly capture the image signal of image axle F.

As shown in Figure 2, the use of optical mouse is the aspect that can be subject to surface of contact 84, is on the transparent dielectric material (as glass) as this surface of contact 84, or for can absorption/upset on the material of light when (as japanning metal, minute surface); Wherein, with the transparent dielectric material is example, to make that surface of contact 84 and image axle F are not overlapping, when projection light is incident to surface of contact 84, count refractive index if disregard, the optical axis D of projection source can meet at 1 M with the image axle F of its below, be that the optical axis D of projection source and the optical axis R of pick-up image can't intersect at image axle F place, and then cause optical mouse on this surface of contact 84, not act on, in other words, optical mouse is subject to the aspect of surface of contact 84, thus anxiety that can't the generation effect, therefore, make optical mouse on using, inconvenience be arranged also unavoidably.

Then, with existing Trackball device, but in the shell of its generator such as keyboard, notebook computer, or use inserting mode and main frame to plug as USB, utilize user's finger rotary motion trace ball again, via the mobile orientation and the distance of trace ball, and then the cursor position on the synchro control display.

Existing Trackball device is roughly optical profile type, as announce in the novel patent TWM258357 of TW on 03 01st, 2005 Christian era, application number: 093207816, promptly expose a kind of " optics track-ball structure ", see also shown in Figure 3, it provides in the housing 91 that is arranged at input media, and then is exposed the member of a pedestal 92, a trace ball 93, a light-passing board 94, a support 95, a circuit board 96, a light-emitting component 97, a light shield 98 and an identification element 99 etc. in order to the bottom surface by housing 91 surfaces.Wherein, support 95 is also exposed an eyeglass 951, a reflecting part 952 and a leaded light mirror 953.

The light source that is produced when light-emitting component 97, after it can invest the leaded light mirror 953 of this support 95, again via being the sphere place, bottom (will have a projectional angle θ) that obliquely is projected to trace ball 93 after reflecting part 952 reflections, and identification element 99 can see through eyeglass 951, thereby detect distance that part moved and direction that trace ball 93 is projected onto light source, when trace ball 93 is rotated, can make identification element 99 detect the displacement and the direction of trace ball 93, and then calculate a displacement data, and displacement data is reached on the main frame, make main frame can be by displacement data the cursor on the display that is connected of main control system in addition.

In fact, the light source of light-emitting component 97, after reflecting via reflecting part 952, it is projected to the sphere place, bottom of trace ball 93, to on its sphere, produce an image capture district 931, please cooperate (A) that consult Fig. 3 A, (C) shown in, identification element 99 sees through eyeglass 951 and distinguishes the image that light source was throwed on 931 with the pick-up image acquisition, and identification element 99 is the light source sphere that must evenly be projected to trace ball 93 (be in the image capture district 931 light source want homogenising) in the condition precedent of pick-up image, thereby identification element 99 just can be obtained complete image, displacement and direction for comparison and judgement trace ball 93, to calculate a complete displacement data, could control the cursor on the display exactly.

But, when the gathering of light-emitting component 97 light sources forms a light beam L, expose to the sphere of trace ball 93, to produce a light projector district 932, shown in (A), (B) of Fig. 3 A, (C), but be subjected under the influence of oblique projectional angle θ, make that light projector district 932 can't be overlapping with image capture district 931 equably, make image capture district 931 produce shadow region 933, shown in Fig. 3 A (C), (D), make identification element 99 can't capture a complete image, for the displacement and the direction of comparison and judgement trace ball 93, to calculate a complete displacement data.Wherein, Fig. 3 A (D) is the D enlarged drawing partly of (C).

What is particularly worth mentioning is that, see also shown in (A), (B) of Fig. 3 B, especially when the angle value of projectional angle θ is big more, and then the scope that makes shadow region 933 also will relatively become big, shown in Fig. 3 B (C), shadow region 933 is change/expansion relatively in the scope in image capture district 931, can't capture more complete displacement data especially; Therefore, the global design aspect of this structure obviously can't obtain complete displacement data, and making has desirable not to the utmost drawback existence in the operation.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art and defective, a kind of optical multipurpose image detecting structure is proposed, it can reach the pick-up image of complete homogenising, make an image sensor can obtain complete image, for the displacement and the direction of comparison and judgement trace ball, to calculate a complete displacement data.

For reaching above-mentioned purpose, the utility model provides a kind of optical multipurpose image detecting structure, and it comprises: a housing, and it has an accommodation space, and a through hole that is communicated with this accommodation space; One trace ball is rotatably positioned in the accommodation space of this housing, and the part sphere of this trace ball is stretched on outside this housing, and other part sphere corresponds to this through hole; One support is positioned at this through hole one side, and this support is provided with an oblique spectroscope, and a lens element that is positioned at this spectroscope one side, and this spectroscope is with obliquely in the face of the position of this through hole; One circuit board is positioned at this support one side; One photocell, link electrically with this circuit board, the axial plane of projection source that this photocell produces is to the spectroscope of this support, through the optical axis of this spectroscope anti-/ transmission projection source once or once part sphere to this trace ball, the sphere image of this trace ball reflexes to this spectroscope again, and the optical axis of pick-up image is with overlapping through the optical axis of this spectroscope projection source; An and image sensor, link electrically with this circuit board, and in the face of this lens element, throw the optical axis of pick-up image to this lens element through this spectroscope, for the image of this image sensor acquisition through this lens member effect, with acquisition detecting distance and direction that trace ball was moved, and then calculate a displacement data.

The benefit that the utlity model has: the optical axis of projection source that photocell produces, its can via spectroscope once or once above anti-/ transmission and directly being projected on the sphere of trace ball (being the image capture district), be projeced into this image capture district equably thereby make light source to reach, and because the optical axis of projection source and overlap with the light source of pick-up image, be projected to spectroscope afterwards again, and then be projected to lens element again, thereby can reach the pick-up image of complete homogenising, make image sensor obtain complete image, for the displacement and the direction of comparison and judgement trace ball, to calculate a complete displacement data.

For enabling further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet appended graphic only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.

Description of drawings

Fig. 1 is the cut-open view of existing optical mouse;

Fig. 2 is another cut-open view of existing optical mouse;

Fig. 3 is the cut-open view of existing optics track-ball structure;

Fig. 3 A is the synoptic diagram of the X light source projects partly of Fig. 3;

Fig. 3 B is another synoptic diagram of the X light source projects partly of Fig. 3;

Fig. 4 is a three-dimensional exploded view of the present utility model;

Fig. 5 is a three-dimensional combination figure of the present utility model;

Fig. 6 is a cut-open view of the present utility model;

Fig. 6 A is the A part detail drawing of Fig. 6;

Fig. 7 is the cut-open view of another embodiment of the present utility model;

Fig. 8 is applied to schematic perspective view in the keyboard for the utility model;

Fig. 9 is applied to schematic perspective view in the mouse for the utility model.

Symbol description among the figure

(prior art)

81 light-emitting components, 82 light guide plate

821 first reflectings surface, 822 second reflectings surface

83 drain pans, 84 surface of contact

85 eyeglasses, 86 image sensors

F image axle

The optical axis of D projection source

The optical axis of R pick-up image

91 housings, 92 pedestals

93 trace balls, 931 image capture districts

933 shadow regions, 932 light projector districts

94 light-passing boards, 95 supports

951 eyeglasses, 952 reflecting parts

953 leaded light mirrors, 96 circuit boards

97 light-emitting components, 98 light shields

99 identification elements

The θ projectional angle

The L light beam

(the utility model)

10 housings

11 shells, 111 accommodation spaces

112 holes, 12 bearings

121 through holes, 122 balls

123 breach, 13 fixed caps

131 open-works

20 trace balls

21 image capture districts

30 supports

31 spectroscopes, 311 outsides

312 inner faces, 32 lens elements

40 circuit boards

41 openings

50 photocells

60 image sensors

The optical axis of D, D1, D2 projection source

The optical axis of R, R1, R2 pick-up image

The 70a keyboard

The 71a shell body

The 70b mouse

The 71b shell body

Embodiment

See also Fig. 4 to shown in Figure 6, the utility model provides a kind of optical multipurpose image detecting structure, and it includes a housing 10, a trace ball 20, a support 30, a circuit board 40, a photocell 50 and an image sensor 60.

Wherein, these housing 10 significant feature are to use in order to ccontaining trace ball 20, and this housing 10 can have a shell 11, a bearing 12 and a fixed cap 13.Shell 11 from top to bottom offers an accommodation space 111, and the lateral margin face offers two relative holes 112.Bearing 12 centre offer a through hole 121, and are equiped with several rotating balls 122 in the inside, and bearing 12 is provided with several breach 123 and is revealed in outside the bearing 12 for the part pearl face of each ball 122.Offer an open-work 131 in the fixed cap 13.

This support 30 is provided with the spectroscope 31 of an oblique setting, reaches one by the lens element 32 of spectroscope 31 1 sides with the setting of one horizontal.Wherein, spectroscope 31 has a relative outside 311 and an inner face 312, and lens element 32 forms (as Fig. 4) by inner face 312 with the one extension.

This circuit board 40 offers an opening 41, be arranged on these circuit board 40 1 ends these photocell 50 electrically connects, this image sensor 60 electrically connect ground and this photocell 50 relative be arranged at this circuit board 40 other ends, and make image sensor 60 part can by or be positioned at the opening 41 of circuit board 40.

During assembling, support 30 is mounted on place, image sensor 60 tops, to be positioned at circuit board 40 upsides, makes image sensor 60 in the face of lens element 32.Then, shell 11 can make support 30 be arranged in accommodation space 111 along being sheathed on outside the support 30 with circuit board 40 orthogonal directions.Simultaneously, make the front end of photocell 50 can partly stretch in the hole 112, thereby face the spectroscope 31 of support 30.Afterwards, bearing 12 is mounted on the accommodation space 111 of shell 11, is positioned the top of support 30, with seasonal spectroscope 31 with obliquely in the face of the position of the through hole 121 of bearing 12, and make through hole 121 and accommodation space 111 be connected.

Then, again trace ball 20 is mounted in the accommodation space 111 of shell 11, make the part sphere of trace ball 20 contact with the pearl face of each ball 122, and then make trace ball 20 be rotatably positioned in this housing 10, and make the part sphere of lower end correspond to through hole 121 places, can be stretched on outside the through hole 121, or be arranged in through hole 121, and then can face spectroscope 31, and the outside 311 that makes spectroscope 31 is obliquely to face through hole 121, and lens element 32 is positioned at the direction away from trace ball 20, and then makes trace ball 20, spectroscope 31, lens element 32 and image sensor 60 are along unidirectional setting (rectilinear).At last, fixed cap 13 is reciprocally combined with shell 11, make trace ball 20, and then the part sphere of upper end is stretched on outside the fixed cap 13 of housing 10 by open-work 131.

Wherein, above-mentioned structure can be done different variations, and its variation is: bearing 12 can with shell 11 in integrated mode, bearing 12 one are incorporated in the accommodation space 111 of shell 11; In addition, support 30 also can with shell 11 in integrated mode, support 30 one are incorporated in the accommodation space 111 of shell 11.Yet, for the convenience on assembling, when shell 11 and bearing 12 when one-body molded, 30 of supports are preferable in the modes of assembling, otherwise, when shell 11 and support 30 are one-body molded, 12 modes with assembling of bearing are preferable, the convenience that is beneficial to assemble.

See also shown in Figure 6, and please cooperate and consult Fig. 6 A, optical axis D when photocell 50 projection source that produces, it can be in the face of reaching directive spectroscope 31, under the operating characteristic via spectroscope 31, it can be with a part of reflection of the light source of incident, and the optical object of a part of transmission, make that partly the optical axis D1 of the projection source of transmission goes out to pass another hole 112, and partly the optical axis D2 of the projection source of reflection be projected on the part sphere of trace ball 20 towards through hole 121 (be image capture district 21, as Fig. 6 A), the sphere image of trace ball 20 reflexes to spectroscope 31 outsides 311 again, and the optical axis R of pick-up image is with overlapping through the optical axis D2 of spectroscope 31 projection sources.

Again under the effect via spectroscope 31, make that partly the optical axis R1 of the pick-up image of reflection can be projected to photocell 50, partly the optical axis R2 of the pick-up image of transmission can be projected to lens element 32, for the image of image sensor 60 acquisitions through lens element 32 effects.When trace ball 20 is rotated, can make image sensor 60 acquisitions detect the displacement and the direction of trace ball 20, and then calculate a displacement data.

By above-mentioned explanation, the optical axis D of photocell 50 projection source that produces, it can be via the once or once above reflection of spectroscope 31 directly with subvertical direction, the image capture district 21 of the optical axis D2 of projection source to trace ball 20 will be reflected, be projeced into this image capture district 21 (projection area and the image capture district that are light beam are overlapping fully) equably thereby make light source (bundle) to reach, and because the optical axis D2 of projection source and overlap with the light source R of pick-up image, be projected to spectroscope 31 afterwards again, and then be projected to lens element 32 again, thereby can reach the pick-up image of complete homogenising, make image sensor 60 obtain complete image, for the displacement and the direction of comparison and judgement trace ball 20, to calculate a complete displacement data.

In addition, see also (also please cooperate and consult Fig. 6 A) shown in Figure 7, under the operating characteristic according to spectroscope 31, and then make locations of structures setting of the present utility model can do different variations, with aforesaid different being: this shell 11 is arranged on the circuit board 40 along the direction that is parallel to each other with circuit board 40, make support 30 by a hole 112 to be positioned at accommodation space 111, photocell 50 directly stretches in the accommodation space 111, spectroscope 31 is also with oblique position in the face of through hole 121, and the inner face 312 of spectroscope 31 is obliquely in the face of through hole 121 and trace ball 20, photocell 50 is faced in 311 of outsides, make lens element 32 be positioned at, and then make trace ball 20 towards direction near trace ball 20, spectroscope 31 and photocell 50 are along unidirectional setting (horizontal).

Optical axis D when photocell 50 projection sources, and directive spectroscope 31 is under its operating characteristic, make that partly the optical axis D1 of the projection source of transmission is projected on the part sphere of trace ball 20 towards through hole 121, and make that partly the optical axis D2 reflection of the projection source of reflection goes out towards hole 112, the sphere image of trace ball 20 reflexes to the inner face 312 of spectroscope 31 again, and the optical axis R of pick-up image is with overlapping through the light source D1 of spectroscope 31 transmissions.

Again under the effect via spectroscope 31, make that partly the optical axis R1 of the pick-up image of reflection is projected to lens element 32, for the image of image sensor 60 acquisitions through lens element 32 effects, and partly the optical axis R2 of the pick-up image of transmission can be projected to photocell 50.When trace ball 20 is rotated, can make image sensor 60 acquisitions detect the displacement and the direction of trace ball 20, and then calculate a complete displacement data.

Again by above-mentioned explanation, the optical axis D of photocell 50 projection source that produces, it can be via spectroscope 31 once or once above transmission and directly with the direction near level, with the optical axis D 1 of transmission projection source image capture district 21 to trace ball 20, be projeced into this image capture district 21 equably thereby make light source (bundle) to reach, and because the optical axis D1 of projection source and overlap with the light source R of pick-up image, be projected to spectroscope 31 afterwards again, and then be projected to lens element 32 again, thereby can reach the pick-up image of complete homogenising, make image sensor 60 obtain complete image, to reach above-mentioned identical effect.

By above-mentioned explanation, as shown in Figure 8, among the shell body 71a of the keyboard 70a that makes the utility model to provide to be applied to a desktop PC, make trace ball 20 with up use-pattern, and simultaneously can with main frame (figure slightly) electrically connect, by the cursor on the display that above-mentioned displacement data is controlled with main frame is connected.Certainly, the utility model also is to can be applicable in any input media, for example: notebook computer or hand-holding communication device etc., and with the cursor on the control display.In addition, what is particularly worth mentioning is that, the design of the housing 10 that reaches described in the utility model, yes can do different variations for it, as with the surface of the shell body 71a of keyboard 70a the accommodation space (figure slightly) of mode to form an indent such as directly to set to the concave, can directly put trace ball 20 in wherein, and trace ball 20 is done suitable fixing, again above-mentioned member (as circuit board, photocell, support and image sensor etc.) is arranged in shell body 71a inside in the identical group mode of establishing, also can reaches identical effectiveness.

In addition, please consult shown in Figure 9 again, the utility model also can provide among the shell body 71b that is applied to a mouse 70b, make trace ball 20 with down use-pattern, and link electrically via mouse 70b and main frame (figure slightly) simultaneously, by the cursor on the display that above-mentioned displacement data is controlled with main frame is connected.Yet, in use, trace ball 20 moves on a surface of contact, as on desktop, minute surface or glass surface, contact with surface of contact by trace ball 20, the light source projects of inner photocell (figure slightly) is in the sphere of trace ball 20, and be not to be projeced on the surface of contact in direct mode, promptly utilize trace ball 20 to contact with surface of contact as indirect thing, make the light source of photocell not be subject to the aspect of surface of contact, weak point is arranged on use face to avoid optical mouse as described in the prior art.

The above only is a preferable possible embodiments of the present utility model, non-so promptly limit to claim of the present utility model, so use the equivalent structure variation for it of the utility model instructions and accompanying drawing content institute such as, all in like manner all be contained in the scope of the present utility model.

Claims (9)

1. an optical multipurpose image detecting structure is characterized in that, comprising:

One housing, it has an accommodation space, and a through hole that is communicated with this accommodation space;

One trace ball is rotatably positioned in the accommodation space of this housing, and the part sphere of this trace ball is stretched on outside this housing, and other part sphere corresponds to this through hole;

One support is positioned at this through hole one side, and this support is provided with an oblique spectroscope, and a lens element that is positioned at this spectroscope one side, and this spectroscope is with obliquely in the face of the position of this through hole;

One circuit board is positioned at this support one side;

One photocell, link electrically with this circuit board, the axial plane of projection source that this photocell produces is to the spectroscope of this support, through the optical axis of this spectroscope anti-/ transmission projection source once or once part sphere to this trace ball, the sphere image of this trace ball reflexes to this spectroscope again, and the optical axis of pick-up image is with overlapping through the optical axis of this spectroscope projection source; And

One image sensor, link electrically with this circuit board, and in the face of this lens element, throw the optical axis of pick-up image to this lens element through this spectroscope, for the image of this image sensor acquisition through this lens member effect, with acquisition detecting distance and direction that this trace ball was moved, and then calculate a displacement data.

2. optical multipurpose image detecting structure as claimed in claim 1 is characterized in that, this housing has:

One shell, it forms described accommodation space, and this support is arranged in this shell;

One bearing, it forms described through hole, and this bearing is arranged in this shell, is equiped with several rotating balls in this bearing, and its pearl face partly is revealed in this bearing outward for the sphere of this trace ball of contact; And

One fixed cap reciprocally combines with this shell, and be provided with an open-work for the sphere of this trace ball by being stretched on outside this fixed cap.

3. optical multipurpose image detecting structure as claimed in claim 2 is characterized in that, this shell and this bearing are incorporated into this bearing one in the accommodation space of this shell in integrated mode.

4. optical multipurpose image detecting structure as claimed in claim 2 is characterized in that, this shell and this support are incorporated into this support one in the accommodation space of this shell in integrated mode.

5. optical multipurpose image detecting structure as claimed in claim 1 is characterized in that, this spectroscope has a relative outside and an inner face, and this lens element is formed with the one extension by this inner face.

6. optical multipurpose image detecting structure as claimed in claim 5 is characterized in that, in the face of this through hole, this trace ball and this photocell, this lens element is positioned at the direction away from this trace ball with obliquely in this outside.

7. optical multipurpose image detecting structure as claimed in claim 5 is characterized in that, obliquely in the face of this through hole and this trace ball, this lens element is positioned at towards the direction near this trace ball this inner face.

8. optical multipurpose image detecting structure as claimed in claim 1 is characterized in that, this trace ball, this spectroscope, this lens element and this image sensor are along same direction setting.

9. optical multipurpose image detecting structure as claimed in claim 1 is characterized in that, this trace ball, this spectroscope and this photocell are along same direction setting.

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