CN107786862A - A kind of direction apparatus for correcting and projection emission device - Google Patents
A kind of direction apparatus for correcting and projection emission device Download PDFInfo
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- CN107786862A CN107786862A CN201711304471.1A CN201711304471A CN107786862A CN 107786862 A CN107786862 A CN 107786862A CN 201711304471 A CN201711304471 A CN 201711304471A CN 107786862 A CN107786862 A CN 107786862A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3161—Modulator illumination systems using laser light sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/147—Optical correction of image distortions, e.g. keystone
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Geometry (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
The invention discloses a kind of direction apparatus for correcting and projection emission device, direction apparatus for correcting includes image acquisition units, beam emissions unit is installed around image acquisition units, image acquisition units receive the facula information that the beam emissions unit projects projection plane, and the center position of beam emissions unit and image acquisition units is on the same axis；Also include image analysis processing unit, the facula information for the beam emissions unit to be projected into projection plane is compared with test pattern, obtains direction correction control signal；After the image acquisition units reception beam emissions unit projects the facula information of projection plane, facula information is sent to image analysis processing unit.Present invention also offers a kind of corresponding projection emission device.The present invention can carry out image fault correction in the case where not handling video output signals, have the characteristics of easy to operate, image fault degree is small.
Description
The application is to be directed to Application No.：201110455056.2 the applying date：2011-12-28, it is entitled " to correct in direction
The divisional application of the patent of invention of device, projection emission device, projected image correction system and projection image correcting method ".
Technical field
Mechanical correction is carried out the present invention relates to machine control techniques field, more particularly to the projecting direction of projection emission device
Technical field.
Background technology
In daily life, the situation that the sensing to destination apparatus is accurately adjusted is frequently encountered.For example, thrown with projector
When penetrating image, in order to avoid distortion, it is necessary to which projection lens is projected perpendicular to projection screen.But in first installation or more
When changing the installation site of projector, that projection lens putting position is not vertical with projection screen can be present.Source images are by throwing
Shadow camera lens is sent, and the problems such as due to putting position angle, the effect projected on the projection screen is distorted image.
In the prior art, inventor has found that the projector equipment with automatic straightening passes through gravity sensor, correction at present
The trapezoidal distortion of picture vertical angle, the distortion in other directions then need to be adjusted manually, operate inconvenient, installation and debugging
Expend the time.In addition, carry out having to carry out in the case of projection lens projects image during the correction of projector equipment image fault,
Operation inconvenience.
In addition, current shadow casting technique is typically after detecting distortion angle, by signal processing circuit to output
Signal is adjusted, and corrects the shape distortion that the projection of output occurs.But while picture signal processing is carried out, the figure of output
As signal can change compared with original picture signal, it is impossible to truly reproduce original picture signal completely.
The content of the invention
In order to solve problem above present in prior art and other problemses, the embodiment provides one kind
New direction apparatus for correcting, including image acquisition units, image analysis processing unit, direction correcting unit.Image acquisition units
Around (such as surrounding or near) beam emissions unit is installed, beam emissions unit can be launched in certain geometrical shape
Light beam, such as projection of shape of the light beam on the section perpendicular with beam emissions direction is annular, circle, or by more
The point-like figure structure that the individual central point around beam emissions unit is distributed in a ring.The light beam can be made up of directional light,
It can also be made up of the light dissipated.Image acquisition units receive the hot spot letter that the beam emissions unit projects projection plane
Breath.Image analysis processing unit, the beam emissions unit is projected into the facula information of projection plane and test pattern is carried out
Compare, obtain direction correction control signal, control the signified side of the device (such as projection lens or projection screen) in direction to be adjusted
To.The present apparatus can apply to carry out angle adjustment to destination apparatus (such as projection lens or projection screen).
In addition, present invention also offers a kind of corresponding projection emission device, projected image correction system and projected image
Antidote.
The present invention can carry out image fault correction in the case where not handling video output signals to projected image,
With the characteristics of easy to operate, image fault degree is small.
In addition, in section Example provided by the present invention, the working method of direction apparatus for correcting can be independent of
The working method of projection emission device and work independently, can projection emission device do not have image output in the case of to projection
The direction of camera lens is adjusted, thus can save electric energy.
Brief description of the drawings
Fig. 1 a are that the beam emissions unit transmitting light beam described in embodiments of the invention 1 is light path in the case of directional light
And its deflection angle schematic diagram of projecting direction and projection screen；
Fig. 1 b be the beam emissions unit transmitting light beam described in embodiments of the invention 1 be light path in the case of directional light and its
The deflection angle of projecting direction and projection screen corrects situation schematic diagram；
Fig. 2 is light path and its projecting direction and the projection of the beam emissions unit transmitting light beam described in embodiments of the invention 2
The deflection angle correction situation schematic diagram of screen；
Fig. 3 a be the beam emissions unit transmitting light beam described in embodiments of the invention 5 be light path in the case of diverging light and its
The deflection angle schematic diagram of projecting direction and projection screen；
Fig. 3 b be the light beam of the beam emissions unit transmitting described in embodiments of the invention 5 be light path in the case of diverging light and
The deflection angle of its projecting direction and projection screen corrects situation schematic diagram；
Fig. 4 is the system block diagram of the projection emission device described in embodiments of the invention 11；
Fig. 5 a are the structured flowchart of the projected image correction system described in embodiments of the invention 12；
Fig. 5 b are the structured flowchart of the projected image correction system described in embodiments of the invention 13；
Fig. 6 is the flow chart of the antidote of the projected image described in embodiments of the invention 14.
Fig. 7 to Figure 10 is being covered out in projector lens described in embodiments of the invention 15 or the embodiment of the present invention 16
The mode in hole replaces the schematic diagram of beam emissions unit.
Embodiment
To make technical scheme clearer, below in conjunction with the accompanying drawings and specific embodiment is carried out in detail to the present invention
Explanation.
Embodiment 1
Embodiments of the invention 1 provide a kind of direction apparatus for correcting, including image acquisition units, such as camera, IMAQ
The surrounding of unit is provided with beam emissions unit, such as infrared light laser, visible laser or other transmitting high-energy lights
The device of beam.Projection of shape of the light beam that beam emissions unit is launched on the section perpendicular with beam emissions direction is ring
The center position of shape, beam emissions unit and image acquisition units on the same axis, beam emissions unit transmitting
Light beam is parallel to each other.
Beam emissions unit is projected light beam is launched on projection plane first, image acquisition units collection beam emissions list
Member is transmitted into the facula information on projection plane, and facula information is sent into image analysis processing unit.Image analysis processing
Unit extracts the shape information of hot spot, and utilizes following methods structure operational model.
Assuming that the external diameter of ring-shaped light spot is AB, and the projecting direction of beam emissions unit is not perpendicular or parallel with projection plane
When, the light spot shape that beam emissions unit is formed on a projection plane will be an ellipse, as shown in Figure 1a, beam emissions list
The luminous body position of member is the annulus 101 below Fig. 1, and the light spot shape that beam emissions unit is formed on a projection plane is Fig. 1
The elliptical ring 102 of top, its center are O points, and Ab is the major axis of ellipse 102, and A points are one on oval 102 major axis
End points, the circle where vector AB are that projecting beam is crossing A points and the projection in the perpendicular plane of projecting beam, referred to as standard drawing
Shape, vector AB are projections of the vector Ab in above-mentioned plane.
In order that the projecting direction of beam emissions unit is vertical with projection plane, and in the case where projection plane is constant, figure
Picture analysis and processing unit obtains control information, and send control information on device to be adjusted by following operation method
(device to be adjusted can be that direction apparatus for correcting is fixed in itself or with direction apparatus for correcting to direction correcting unit
Other devices of connection, such as projection lens), the direction for treating adjusting apparatus is adjusted.Below using device to be adjusted as throwing
Shadow camera lens, and the central point of the central point of projection lens and the beam emissions unit on the apparatus for correcting of direction enters on the same axis
Row explanation.Because the central point of projection lens and the central point of the beam emissions unit on the apparatus for correcting of direction are in same axis
On, therefore, the inevitable central point also with direction apparatus for correcting projects images of central point of projection lens projects image overlaps, and projects
The projecting direction of camera lens is the projecting direction of direction apparatus for correcting, and now, the adjustment to projection lens direction to direction with correcting
The adjustment of the beam emissions unit of device is consistent.
The definition of angle judgement is provided first.By taking ∠ bAB as an example, if b points are located at circle 103 in the top of B points, i.e. b points
The rear of place plane, it is defined as ∠ bAB ＞ 0；If b points are in the lower section of B points, i.e. before b points are located at 103 place planes of circle
Side, is defined as ∠ bAB ＜ 0.If b points overlap with B points, be defined as ∠ Bab=0 (definition below for angle is identical with this,
Repeat no more).
As ∠ bAB ＞ 0, as shown in Figure 1 b, image analysis processing unit sends direction correction control to direction correcting unit
Signal processed, make direction anglec of rotation ∠s of the projecting direction XP along vector b A of the i.e. projection lens of projecting direction of direction apparatus for correcting
BAB (until point to Xp), i.e., by beam emissions unit by 101 position adjustment dotted line ring 104 into Fig. 1 a position, even if light
The facula position of the light beam of beam transmitter unit projection on a projection plane is broken circle 105, and its central point is o points.Now, project
The direction of camera lens is perpendicular with projection plane.As ∠ bAB ＜ 0, opposite direction adjustment is carried out in a similar way, no
Repeat again.As ∠ bAB=0, then explanation makes the direction of projection lens perpendicular with projection plane, it is not necessary to adjusts.
After the direction of projection lens rotates to from XP the Xp directions of normal to screen, if the position of beam emissions unit
Put and the position of projection plane is constant, the central point of institute's projects images can be also transferred to from the central point O points of original ellipse 102
New projected position (i.e. round 105 center of circle o points)., can be not if remaining desirable to the center position of projected image in O points
On the premise of adjusting screen position, beam emissions unit is entered in the plane parallel with projection screen along vector oO direction
Row translation, until the central point of projection overlaps with O points.
The cross sectional shape of projecting beam can also be circular, or be in by multiple central points around beam emissions unit
The point-like figure structure of annular spread, the situation for the method being now adjusted to projection lens is similar with the present embodiment, no longer
Repeat.(it is of course also possible to be that its circular principle is roughly the same with implementation, behind will not enumerate).
If when the central point of beam emissions unit and the adjoining but misaligned central point of image acquisition units, for example,
Beam emissions unit is located at the lower section of image acquisition units, due in the central point and image acquisition units of beam emissions unit
The distance between heart point is relative to direction apparatus for correcting with very small for view plane distance, therefore the error thus brought can
Ignore, can still be realized according to the technical scheme of the present embodiment.
If the central point of the beam emissions unit on the central point of projection lens and direction apparatus for correcting is not in same axle
On line, when being corrected to projection lens, in order to the position of projected image is placed in the central point of projection screen, it is necessary to according to
The position difference of two central points is translated to the center of projected image, compensated.For example, when in image acquisition units
When heart point is located at 5cm above projection lens center position, projecting direction is adjusted to projection screen it is perpendicular after, also
Projection lens need to be translated up to 5cm, or projection screen is translated into downwards 5cm.
Embodiment 2：
In embodiment 1, when the direction that the projecting direction of beam emissions unit is projection lens rotates to normal to screen from XP
Xp directions after, if the position of beam emissions unit and the position of projection plane are constant, the central point of institute's projects images
New projected position (i.e. round 105 center of circle o points) can be transferred to from the central point O points of original ellipse 102.If do not adjusting
On the premise of screen position and the position of beam emissions unit, it is still desirable to which the center position of projected image is in O points, Ke Yitong
The method for crossing adjustment screen angle is adjusted.Specific implementation is as follows：
In order that the projecting direction of direction apparatus for correcting be projection lens direction it is vertical with projection plane, in projection emission device
Position, i.e., beam emissions unit it is constant in the case of, image analysis processing unit obtains control letter by following operation method
Breath, and the screen angle adjustment unit sent control information on projection screen, are adjusted to the angle of screen.
Specifically, ∠ bAB are first determined whether.If ∠ bAB ＞ 0, screen angle adjustment unit is to the angle on projection screen
Degree adjusting apparatus sends direction correction control signal, makes projection screen centered on O points, rotates ∠ bAB along vector b B directions, i.e.,
Rotate in the plane where broken circle in Fig. 1 b 106 that (plane where broken circle 106 was actually O points and to justify 101 flat
The circle of row and congruence), at this moment, direction residing for new projection plane is vertical with projecting direction vector XP.(as shown in Figure 2)
If ∠ bAB ＜ 0, opposite direction adjustment is carried out in a similar way, is repeated no more.If b points overlap with B points,
Then illustrate that the projecting direction of projection lens is perpendicular with projection plane, it is not necessary to adjust.
Embodiment 3
Beam emissions unit described in embodiment 1 can also be a point-like laser transmitting dress around axis of rotation rotation
Put.Now, image acquisition units also include an image information memory cell, can store an image at regular intervals and adopt
The facula position information for the above-mentioned beam emissions unit that collection unit collects, and relevant information is sent to image analysis processing list
Member.Image analysis processing unit is analyzed hot spot in the position of different time, calculated, and synthesizes its movement locus.If its
Movement locus is circular, illustrates that current projecting direction is vertical with projection screen, it is not necessary to adjust；If its movement locus is
Ellipse, illustrate current projecting direction with projection screen out of plumb, it is necessary to adjust.Specific method of adjustment can respectively refer to reality
Example 1 and embodiment 2 are applied, by the outline of the elliptic projection figure that light beam is formed on a projection plane in embodiment 1 or embodiment 2
Replaced with the movement locus of hot spot.
Embodiment 4
Beam emissions unit described in embodiment 1 can also be two point-like laser transmitting dresses around axis of rotation rotation
Put, the two point-like laser emitters are equal apart from the distance of pivot, and are respectively at a diameter in rotational trajectory
Two end points.Now, image acquisition units also include an image information memory cell, can store one at regular intervals
The facula position information for the above-mentioned beam emissions unit that secondary image acquisition units collect, and relevant information is sent to image point
Analyse processing unit.Image analysis processing unit is analyzed in the distance of different time two hot spots.If between 2 points
Distance is equal all the time, illustrates that current projecting direction is vertical with projection screen, it is not necessary to adjust；If the distance between 2 points
Change between maximum and minimum value, illustrate current projecting direction with projection screen out of plumb, it is necessary to adjust.Specific adjustment
Method is referred to embodiment 1 or embodiment 2, the oval throwing that light beam in embodiment 1 or embodiment 2 is formed on a projection plane
The outline of shadow figure is replaced with the movement locus of hot spot.
In addition it is also possible to judge to project with the changing rule of the position where hot spot according to the size of distance between hot spot
The deviation situation of angle, and projection angle is adjusted.
Embodiment 5
For above example, when the light that the beam emissions unit is sent is not directional light, for example, beam emissions unit is sent out
When what is gone out is in just the light of divergent state, still the method in above-described embodiment can be used to be adjusted.Below with embodiment 1
Exemplified by illustrate.
First, image acquisition units collection beam emissions unit is transmitted into facula information on projection plane, and by hot spot
Information is sent to image analysis processing unit.Image analysis processing unit extracts the shape information of hot spot, and utilizes following methods
Build operational model.
What if beam emissions unit was sent is in just divergent state, and the projection of shape of the vertical cross-section when projecting beam
For annular (explanation：Situation and this implementation of the cross sectional shape of projecting beam for point-like figure structure that is circular or being distributed in a ring
Example is similar), the central point of the central point of projection lens and the beam emissions unit on the apparatus for correcting of direction on the same axis, and
The projecting direction of beam emissions unit is identical with projection lens direction, and not with projection plane it is perpendicular or parallel when, such as Fig. 3 a institutes
Show, the luminous body position of beam emissions unit is the annulus 301 below Fig. 1, and beam emissions unit is formed on a projection plane
Light spot shape is the elliptical ring 302 above Fig. 1, and its center is O points, and Ab is the major axis of ellipse 302, and A points are that ellipse 302 is grown
An end points on axle, the circle where vector AB are that projecting beam is crossing A points and the throwing in the perpendicular plane of projecting beam
Shadow, referred to as standard picture, vector AB are projections of the vector Ab in above-mentioned plane.
In order that the projecting direction of beam emissions unit be projection lens direction it is vertical with projection plane, in projection plane
In the case of constant, image analysis processing unit obtains control information, and send control information to by following operation method
Direction correcting unit, the direction of projection lens is adjusted.
Specifically, ∠ bAB are first determined whether.If ∠ bAB ＞ 0, as shown in Figure 3 a, illustrate b point positions after circle 103
Side.
Image analysis processing unit sends direction correction control signal to direction correcting unit, makes the direction XP of projection lens
Along vector b A direction anglec of rotation ∠ bAB (until point to Xp), i.e., by beam emissions unit by 301 position adjustment to Fig. 1 a
The position of middle dotted line ring 304, even if the facula position of the light beam of projection lens projects on a projection plane is broken circle 305, its
Central point is o points.Now, the projecting direction of projection lens is (as shown in Figure 3 b) perpendicular with projection plane.If b points are in B
The lower section of point, opposite direction adjustment is carried out in a similar way, is repeated no more.If b points overlap with B points, illustrate to throw
The projecting direction of shadow camera lens is perpendicular with projection plane, it is not necessary to adjusts.
After projection lens direction rotates to the Xp directions of normal to screen from XP, if projection emission setting position and
The position of projection plane is constant, and the central points of institute's projects images can also be transferred to new from the central point O points of original ellipse 302
Projected position (i.e. round 305 center of circle o points).If remaining desirable to the center position of projected image in O points, can not adjust
On the premise of screen position, projection lens is translated in the plane parallel with projection screen along vector oO direction,
Until the central point of projection overlaps with O points.
Embodiment 6
Embodiment 6 provides a kind of projection lens's skull, and projection lens, which covers, includes image acquisition units.The image acquisition units
Together with the annular on projection lens or projection emission device other positions or the beam emissions unit being distributed in a ring, press
According to the method provided in above-described embodiment, the projecting direction of projection emission device is corrected.So, camera lens can not be opened
The purpose corrected to the projecting direction of projection emission device is realized in the case of lid.
Embodiment 7
Embodiment 7 provides a kind of projection lens's skull, is provided with annular around the center of projection lens's skull or is distributed in a ring
Beam emissions unit.The beam emissions unit together with the image acquisition units on lens cap or projection emission device,
According to the method provided in above-described embodiment, the projecting direction of projection emission device is corrected.So, mirror can not be opened
The purpose corrected to the projecting direction of projection emission device is realized in the case of skull.
Embodiment 8
Embodiment 8 provides a kind of projection lens's skull, circular, annular is provided with centered on the central point of projection lens's skull or in ring
The aperture of shape distribution, when projection lens, skull is covered on projection lens, and when projection lens projects go out light beam, the light beam passes through aperture
Form the light beam with given shape.The lens cap and the image acquisition units one on lens cap or projection emission device
Rise, when projection lens lights, according to the method provided in above-described embodiment, the projecting direction of projection emission device is rectified
Just.
Embodiment 9
Embodiment 9 provides a kind of projection emission device, including the direction apparatus for correcting described in above-described embodiment, the direction
The position of apparatus for correcting and projection lens is relatively fixed, and its projecting direction is parallel with the projecting direction of projection lens.
When the beam emissions unit on central point and the direction apparatus for correcting of projection lens central point on the same axis
When, by the technical scheme described in above-described embodiment, the projecting direction of direction apparatus for correcting is adjusted to hang down with projection screen
When straight, you can realize the purpose corrected to the projecting direction of projection emission device.
When the central point of projection lens and the central point of the beam emissions unit on the apparatus for correcting of direction be not in same axis
When upper, when being corrected to projection lens, in order to the position of projected image is placed in the central point of projection screen, it is necessary to according to
The position difference of two central points is translated to the center of projected image, compensated.For example, when in image acquisition units
When heart point is located at 5cm above projection lens center position, projecting direction is adjusted to projection screen it is perpendicular after, also
Projection lens need to be translated up to 5cm, or projection screen is translated into downwards 5cm.
Embodiment 10
Embodiment 10 provides a kind of projection emission device, includes image acquisition units, projection lens.The projection lens can be with
Launch the projection image signal of given shape, such as using image center as the circle in the center of circle, ring-shaped figure image or in a ring
Multiple discrete point-like graph images of distribution, or the point-like figure image around image center motion.At this moment, using above-mentioned
The related art scheme provided in embodiment, the projecting direction of projection lens is corrected.
Embodiment 11
Embodiment 11 provides a kind of projection emission device, including projection emission device, image acquisition units and beam emissions list
Member, image analysis processing unit and direction correcting unit, using the related art scheme provided in above-described embodiment, projection is sent out
The projecting direction of injection device is corrected.
Embodiment 12
Embodiment 12 provides a kind of projected image correction system, including projection emission device, projection screen, direction correction dress
Put, direction correcting unit, the direction correcting unit is located on projection emission device, can be according to described image analysis and processing unit
The sensing of the projection lens on direction correction control signal control projection emission device sent.Correct control signal in the direction
It is that related art scheme provided in embodiment as described above obtains.
Embodiment 13
Embodiment 13 provides a kind of projected image correction system, including projection emission device, projection screen, direction correction dress
Put, direction correcting unit, the direction correcting unit is located on projection screen, and the projection screen adjusts provided with screen angle
Unit, can be according to the angle for the direction correction control signal adjustment projection screen that image analysis processing unit is sent.The direction
Correction control signal is that the related art scheme provided in embodiment as described above obtains.
Embodiment 14
Embodiment 14 provides a kind of projection image correcting method, including：
Beam emissions unit projects the image of certain geometrical shape on projection plane by beam emissions unit；It is described certain
The image of geometry includes annular, circular, the point-like figure structure being distributed in a ring around the central point of beam emissions unit.
Image information in image acquisition units acquired projections plane；
Image analysis processing unit is according to the related art scheme provided in previous embodiment, by described image information and standard drawing
Shape is compared, and obtains direction correction control signal；
Direction correcting unit corrects control signal according to the direction, and the crevice projection angle or projection screen to projection lens are put
Angle is corrected, and makes the crevice projection angle of projection lens vertical with the projection plane.
Embodiment 15
As shown in Figure 7 to 10, embodiment 15 provides a kind of projector, including lens cap 401, and aperture is provided with lens cap
402.The aperture 402 can have one, and positioned at close to lens cap marginal position；Driving electricity is connected with the lens cap
Machine, motor can drive central shaft rotation (as shown in Figure 9) of the lens cap around lens cap；The aperture 402 can also
Have multiple, its shape can be arbitrary plane geometry, for example, aperture can be the annulus using the center of lens cap as the center of circle
On arc hole or circular hole (as shown in Figure 7)；The aperture 402 can also only have one, and positioned at the center of projector lens lid
Position (as shown in Figure 10)；
The projector also includes image acquisition units 403, and described image collecting unit can be located at the axle center position of lens cap 401
Put, the surrounding (as shown in Figure 10) of projector lens lid 401 can also be located at.
Projection lens receives projection lens projects and arrived through lens cap 401 to screen projecting beam, image acquisition units 403
Facula information on screen.
The projector also includes image analysis processing unit, according to the technology provided in the above-mentioned related embodiment of the present invention
Scheme, the facula information that the beam emissions unit projects projection plane is compared with test pattern, direction is obtained and rectifys
Positive control signal.
The projector can also include direction correcting unit, and the direction correcting unit is fixed with projector lens to be connected
Connect, to control the signified direction of projector lens.
Embodiment 16
Corresponding with embodiment 15, embodiment 16 provides a kind of projector lens lid, and aperture is provided with the lens cap.
Especially, image acquisition units are also included on lens cap, described image collecting unit is located at the axle center position of lens cap
Put.
It should be noted that the foregoing is only the preferred embodiments of the present invention, it is not intended to limit the invention, it is right
For those skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles of the invention,
Any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection.
Claims (10)
1. a kind of direction apparatus for correcting, including image acquisition units, it is characterised in that light is installed around image acquisition units
Beam transmitter unit, image acquisition units receive the facula information that the beam emissions unit projects projection plane, beam emissions
The center position of unit and image acquisition units is on the same axis；Also include image analysis processing unit, for by described in
The facula information that beam emissions unit projects projection plane is compared with test pattern, obtains direction correction control signal；
After the image acquisition units reception beam emissions unit projects the facula information of projection plane, facula information is sent to figure
As analysis and processing unit.
2. direction apparatus for correcting according to claim 1, it is characterised in that the light beam of the beam emissions unit transmitting is mutual
It is parallel.
3. direction apparatus for correcting according to claim 1, it is characterised in that what the beam emissions unit was sent is in just
Divergent state.
4. direction apparatus for correcting according to claim 1, it is characterised in that described also including screen angle adjustment unit
Screen angle adjustment unit is located on projection plane.
5. direction apparatus for correcting according to claim 1, it is characterised in that the beam emissions unit can be along specified
Central point rotates.
6. direction apparatus for correcting according to claim 1, it is characterised in that beam emissions unit can with projection plane phase
Translated in parallel plane.
7. according to any described direction apparatus for correcting in claim 1 to claim 6, it is characterised in that also including direction
Correcting unit, the direction correcting unit are fixedly connected with the device in direction to be adjusted, to control the device in direction to be adjusted
Signified direction.
8. direction apparatus for correcting according to claim 7, it is characterised in that in the case where projection plane is constant, image
Analysis and processing unit obtains control information by computing, and it is single to send control information to the correction of the direction on device to be adjusted
Member, the direction for treating adjusting apparatus are adjusted, or in the case where beam emissions unit is constant, image analysis processing unit
By following operation method, control information is obtained, and sends control information to the adjustment of the screen angle on projection screen
Unit, the angle of screen is adjusted.
9. direction apparatus for correcting according to claim 8, it is characterised in that the device to be adjusted can be direction correction
The projection lens that device is fixedly connected in itself or with direction apparatus for correcting.
10. a kind of projection emission device, including any described direction apparatus for correcting in claim 1 to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711304471.1A CN107786862B (en) | 2011-12-28 | 2011-12-28 | Direction correcting device and projection transmitting device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455056.2A CN102572347B (en) | 2011-12-28 | 2011-12-28 | Direction apparatus for correcting, projection emission device, projected image correction system and projection image correcting method |
| CN201711304471.1A CN107786862B (en) | 2011-12-28 | 2011-12-28 | Direction correcting device and projection transmitting device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110455056.2A Division CN102572347B (en) | 2011-12-28 | 2011-12-28 | Direction apparatus for correcting, projection emission device, projected image correction system and projection image correcting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107786862A true CN107786862A (en) | 2018-03-09 |
| CN107786862B CN107786862B (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711304097.5A Active CN107968938B (en) | 2011-12-28 | 2011-12-28 | Direction correction device, projection emission device and projection image correction method |
| CN201711304472.6A Active CN107911679B (en) | 2011-12-28 | 2011-12-28 | Projection lens cover, projection emission device and projection image correction method |
| CN201110455056.2A Expired - Fee Related CN102572347B (en) | 2011-12-28 | 2011-12-28 | Direction apparatus for correcting, projection emission device, projected image correction system and projection image correcting method |
| CN201711304471.1A Expired - Fee Related CN107786862B (en) | 2011-12-28 | 2011-12-28 | Direction correcting device and projection transmitting device |
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| CN201711304097.5A Active CN107968938B (en) | 2011-12-28 | 2011-12-28 | Direction correction device, projection emission device and projection image correction method |
| CN201711304472.6A Active CN107911679B (en) | 2011-12-28 | 2011-12-28 | Projection lens cover, projection emission device and projection image correction method |
| CN201110455056.2A Expired - Fee Related CN102572347B (en) | 2011-12-28 | 2011-12-28 | Direction apparatus for correcting, projection emission device, projected image correction system and projection image correcting method |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104954714B (en) * | 2015-06-24 | 2017-12-19 | 福州瑞芯微电子股份有限公司 | The back of the hand projecting method and device |
| CN105657388A (en) * | 2015-12-30 | 2016-06-08 | 广东威创视讯科技股份有限公司 | Method for adjusting position of back projector and back projector |
| CN108632585B (en) | 2017-03-24 | 2021-03-09 | 中兴通讯股份有限公司 | Image correction method and device, storage medium and projection equipment |
| CN107896323A (en) * | 2017-11-01 | 2018-04-10 | 海信集团有限公司 | The method of projection arrangement, screen and the position by screen adjustment projection arrangement |
| WO2019227975A1 (en) | 2018-05-30 | 2019-12-05 | Oppo广东移动通信有限公司 | Control system of laser projector, terminal and control method of laser projector |
| CN108767653A (en) * | 2018-05-30 | 2018-11-06 | Oppo广东移动通信有限公司 | Control system and terminal of laser projector and control method of laser projector |
| CN109680969B (en) * | 2018-12-04 | 2021-12-21 | 台州市椒江莱凡特眼镜厂 | Spherical screen adjusting method and adjusting system |
| CN114967109B (en) * | 2021-02-25 | 2024-01-05 | 成都理想境界科技有限公司 | Image correction method and optical fiber scanning imaging system |
| US20240264461A1 (en) * | 2021-05-12 | 2024-08-08 | Cineappo Laser Cinema Technology (Beijing) Co., Ltd | Stereoscopic projection device |
| CN113390366B (en) * | 2021-06-25 | 2022-10-11 | 上海工程技术大学 | Method for judging perpendicularity of optical axis of camera and cambered surface hole cutting plane and verification platform |
| CN114640791B (en) * | 2022-01-27 | 2024-09-13 | 浙江大华技术股份有限公司 | Lens angle adjusting method, device, computer equipment and camera |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102572347A (en) | 2012-07-11 |
| CN107968938A (en) | 2018-04-27 |
| CN107786862B (en) | 2020-04-07 |
| CN107911679A (en) | 2018-04-13 |
| CN107968938B (en) | 2020-02-21 |
| CN107911679B (en) | 2020-11-03 |
| CN102572347B (en) | 2018-02-13 |
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