CN202502335U

CN202502335U - Short-focus optical interactive projector system

Info

Publication number: CN202502335U
Application number: CN201220028658XU
Authority: CN
Inventors: 洪惠泰; 吴天阳; 丁昱旼; 陈信安; 宫下荣明
Original assignee: EVEREST PHOTOELECTRIC (WUXI) Co Ltd
Current assignee: EVEREST PHOTOELECTRIC (WUXI) Co Ltd
Priority date: 2012-01-20
Filing date: 2012-01-20
Publication date: 2012-10-24
Anticipated expiration: 2022-01-20

Abstract

The utility model relates to a short-focus optical interactive projector system. The short-focus optical interactive projector system comprises an image projection device, an image capturing device, a displacement inclining mechanism, an infrared indicator, a computer, and the like, wherein the image capturing device comprises a wide-angle camera lens and an image sensor, the wide-angle camera lens has an optical axis B and an effective image circle, the displacement inclining mechanism comprises a fixing seat and a slipping seat, a slipping direction of the slipping seat is perpendicular to the optical axis B of the wide-angle camera lens, the wide-angle camera lens is arranged on the fixing seat, the image sensor is set up on the slipping seat, a center of the image sensor and the optical axis B of the wide-angle camera lens have offsets, and an image capturing scope is enlarged to meet requirements of short-distance image taking. By arranging an angle of inclination of the optical axis B of the wide-angle camera lens and a normal of a display surface, a tubular aberration is changed into a trapezoidal aberration; the trapezoidal aberration is corrected by utilizing a simple correction mode of linear calculation; use of complex high-order multi-time curve calculation is avoided; and cost is reduced.

Description

Short burnt optical interaction projector system

Technical field:

The utility model relates to a kind of interactive projection machine, particularly a kind of can the short distance pick-up image and corrective lens distort the burnt optical interaction projector system of weak point of aberration.

Background technology:

Traditional interactive projection machine system comprises Imaing projector and image capture unit, lets Imaing projector projection on display surface obtain projection image; Relend by this image capture unit on display surface, take the photograph filmed image; This filmed image is projected on the display surface as projection image by Imaing projector again, constitutes interactive projection system thus, can be used as teaching and going up and use; The instructor can use the infrared ray stylus on display surface, to mark; With take the photograph by image capture unit the mark on the display surface, and projection in time is to display surface, to satisfy the demand in the teaching.

Traditional interactive projection machine system; Owing to need the image on the picked-up display surface, so between Imaing projector, image capture unit and the display surface any barrier can not be arranged, therefore generally must need special-purpose audiovisual classroom; Avoid image to disturb with high this Imaing projector of convenient stand and this image capture unit; It is provided with high costs, and does not have maneuverability, and does not meet the demand in the use.And another selection is to use short burnt optical interaction projector system; Though it can be placed in the space between instructor and the display surface, but to take large-area image, must use the wider wide-angle camera in visual angle in short distance; Let this image capture unit closely take the photograph large-area image; But as shown in Figure 1, the pixel particles 2 in its wide-angle camera 1 inevitably has the problem of tubular aberration, and in order to revise the tubular aberration; Can use expensive multi-disc optical frames group to design to eliminate or lower; Or use high-order repeatedly the mode of curve calculation correction proofread and correct, its computing is complicated and need computing wafer with high costs, is difficult to satisfy the low demand that cost is set.

The utility model content:

The purpose of the utility model be to provide a kind of can the short distance pick-up image and corrective lens distort the burnt optical interaction projector system of weak point of aberration.

To achieve these goals, the utility model proposes following technical scheme realization:

Short burnt optical interaction projector system is made up of Imaing projector, image capture unit, displacement deflection mechanism, metascope, computer; It is characterized in that: image capture unit and displacement deflection mechanism are connected as a single entity, and also carry is on Imaing projector, and image capture unit is caught the metascope signal, and Imaing projector is crossed data line with the computer expert and linked to each other.

Described Imaing projector has optical axis A.

Described image capture unit is made up of wide-angle camera and CIS, and wide-angle camera has optical axis B and effectively picture is round.

Described displacement deflection mechanism is made up of holder and slip base, but the slippage of slip base relative fixed seat, and the optical axis B of the vertical wide-angle camera of glide direction of slip base, wide-angle camera is located on the holder, and CIS is erected on the slip base.

The Diagonal Dimension of described CIS is less than effective picture circle of wide-angle camera.

Has side-play amount between the optical axis B of the center of described CIS and wide-angle camera.

The capture frame of described CIS is in effective picture circle of wide-angle camera.

The normal of described CIS parallel with the optical axis B of wide-angle camera and and the normal of show image between have angle.

The normal of described show image is parallel with the optical axis A of Imaing projector.

Described image capture unit and displacement deflection mechanism can be installed on the foot rest, are independent of Imaing projector.

The soluble technical matters of the utility model is:

Wide-angle camera is located on the holder; CIS is erected on the slip base; The position of adjustment slip base just can let the center of CIS and the optical axis of wide-angle camera have side-play amount, can strengthen the scope of image capture, satisfies the demand of short distance capture; CIS is provided with the capture frame in effective picture circle of wide-angle camera; The optical axis of wide-angle camera and the normal of display surface have angle; Convert the tubular aberration in the capture frame into trapezoidal aberration through the adjustment angle; To avoid the use of the repeatedly numerical evaluation mode of curve of complicated high-order, use the simple linear mode of revising of calculating to revise trapezoidal aberration, obtain not having the image of distortion; But not only short distance capture of this patent is distorted aberration but also can proofread and correct wide-angle camera at low cost, has the excellent popularization benefit.

Description of drawings:

The pixel particles synoptic diagram of Fig. 1 traditional optical aberration;

The short burnt optical interaction projector system Organization Chart of Fig. 2 the utility model;

Fig. 3 the utility model displacement deflection mechanism structure figure;

Fig. 4 the utility model CIS and wide-angle camera relative displacement and obliquity figure;

Pixel particles synoptic diagram after Fig. 5 the utility model CIS and the wide-angle camera relative displacement;

Pixel particles synoptic diagram after Fig. 6 the utility model CIS and wide-angle camera relative displacement and the inclination;

Fig. 7 the utility model pixel particles is proofreaied and correct the back synoptic diagram;

Fig. 8 the utility model integral type interaction synoptic diagram;

Fig. 9 the utility model separate type interaction synoptic diagram.

Embodiment:

As shown in the figure, short burnt optical interaction projector system is made up of Imaing projector 10, image capture unit 20, displacement deflection mechanism 50, metascope 71, computer 80; Image capture unit 20 be connected as a single entity with displacement deflection mechanism 50 and carry on Imaing projector 10, image capture unit 20 is caught metascopes 71 signals, Imaing projector 10 and computer 80 link to each other through data line.

As shown in Figure 2, Imaing projector 10 has optical axis A101, and projection on display surface, and image capture unit 20 is made up of wide-angle camera 21 and CIS 22, and wide-angle camera 21 has optical axis B211 and effectively picture is round; The Diagonal Dimension of CIS 22 has side-play amount 40 less than the effective picture circle of wide-angle camera 21 and the center of CIS 22 and the optical axis B211 of wide-angle camera 21; And the normal of CIS 22 is parallel with the optical axis B211 of wide-

angle camera

21 and and 31 of the normals of show image have angle 60, can let after adjusting CIS 22 in short distance take the photograph filmed image.

As shown in Figure 3; Displacement deflection mechanism 50 is made up of holder 51 and slip base 52, but wherein slip base 52 relative fixed seats 51 slippages, and the glide direction of slip base 52 is perpendicular to the optical axis B211 of wide-angle camera 21; Wide-angle camera 21 is located on the holder 51; CIS 22 is erected on the slip base 52, and the position of adjustment slip base 52 can let the center of CIS 22 and the optical axis B211 of wide-angle camera 21 have side-play amount 40.

As shown in Figure 4; CIS 22 take the photograph the filmed image of wide-angle camera 21 the tubular aberration is inevitably arranged; The deflection that this optics is distorted aberration is about 7%～25%, and can let the optical axis B211 of wide-angle camera 21 and the normal 31 of display surface have pitch angle 60 this moment earlier, and adjustment pitch angle 60; Can let the image error of filmed image convert trapezoidal aberration into by the tubular aberration, the normal 31 of display surface is parallel with the optical axis A101 of Imaing projector 10; Then let filmed image calculate the trapezoidal aberration of revising of mode correction again, promptly accomplish and distort aberration correction via linearity.

The center of CIS 22 and the optical axis B211 of wide-angle camera 21 are set have side-play amount 40, the capture frame 212 of CIS 22 in effective picture circle of wide-angle camera 21 is as shown in Figure 5; The optical axis B211 of wide-angle camera 21 and the normal 31 of display surface then are set have pitch angle 60, the error of filmed image can convert trapezoidal aberration into by the tubular aberration in the capture this moment frame 212, and is as shown in Figure 6; Image calculates the mode of revising via linearity again and revises trapezoidal aberration, and capture frame 212 can be obtained aberrationless portrait sub-prime 90, and is as shown in Figure 7.

Like Fig. 8, shown in 9; The image capture unit 20 of native system and displacement deflection mechanism 50 directly carry on Imaing projector 10; Can take display surface and obtain filmed image; Through controlling computer 80 and using metascope 71 on display surface, to mark the operation of imparting knowledge to students, perhaps image capture unit 20 can independently be located at Imaing projector 10 sides by foot rest 72 with displacement deflection mechanism 50, takes display surface and obtains filmed image for the instructor.

Native system has strengthened the scope of image capture through letting the center of CIS 22 and the optical axis B211 of wide-angle camera 21 have side-play amount 40, can satisfy the demand of short distance capture; Through letting the optical axis B211 of wide-angle camera 21 and the normal 31 of display surface have pitch angle 60; Can convert the tubular aberration into trapezoidal aberration; And use the simple linear mode of revising of calculating to revise trapezoidal aberration, and avoided using repeatedly curve calculation of complicated high-order, reduced cost.

The above-mentioned preferred embodiment that is merely native system, native system are not to be limited to this instance.

Claims

1. lack burnt optical interaction projector system, form by Imaing projector, image capture unit, displacement deflection mechanism, metascope, computer; It is characterized in that: image capture unit and displacement deflection mechanism are connected as a single entity, and also carry is on Imaing projector, and image capture unit is caught the metascope signal, and Imaing projector is crossed data line with the computer expert and linked to each other.

2. the burnt optical interaction projector system of weak point according to claim 1, it is characterized in that: described Imaing projector has optical axis A.

3. the burnt optical interaction projector system of weak point according to claim 1, it is characterized in that: described image capture unit is made up of wide-angle camera and CIS, and wide-angle camera has optical axis B and effectively picture is round.

4. the burnt optical interaction projector system of weak point according to claim 1 is characterized in that: described displacement deflection mechanism is made up of holder and slip base, but the slippage of slip base relative fixed seat.

5. according to claim 3 or the burnt optical interaction projector system of 4 described weak points, it is characterized in that: the optical axis B of the vertical wide-angle camera of glide direction of slip base, wide-angle camera is located on the holder, and CIS is erected on the slip base.

6. the burnt optical interaction projector system of weak point according to claim 3 is characterized in that: the Diagonal Dimension of described CIS is less than effective picture circle of wide-angle camera.

7. the burnt optical interaction projector system of weak point according to claim 3 is characterized in that: have side-play amount between the optical axis B of the center of described CIS and wide-angle camera.

8. the burnt optical interaction projector system of weak point according to claim 3 is characterized in that: the capture frame of described CIS is in effective picture circle of wide-angle camera.

9. according to claim 1 or the burnt optical interaction projector system of 3 described weak points, it is characterized in that: the normal of described CIS parallel with the optical axis B of wide-angle camera and and the normal of show image between have angle.

10. the burnt optical interaction projector system of weak point according to claim 1 and 2 is characterized in that: the normal of described show image is parallel with the optical axis A of Imaing projector.