CN107155097A - Focus adjustment method, focus control and the projection terminal of projection terminal - Google Patents

Focus adjustment method, focus control and the projection terminal of projection terminal Download PDF

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Publication number
CN107155097A
CN107155097A CN201710452922.XA CN201710452922A CN107155097A CN 107155097 A CN107155097 A CN 107155097A CN 201710452922 A CN201710452922 A CN 201710452922A CN 107155097 A CN107155097 A CN 107155097A
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CN
China
Prior art keywords
camera lens
projection
focus
distance
focusing
Prior art date
Application number
CN201710452922.XA
Other languages
Chinese (zh)
Inventor
王迅
侯阔
Original Assignee
上海青橙实业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海青橙实业有限公司 filed Critical 上海青橙实业有限公司
Priority to CN201710452922.XA priority Critical patent/CN107155097A/en
Publication of CN107155097A publication Critical patent/CN107155097A/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225Television cameras ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/232Devices for controlling television cameras, e.g. remote control ; Control of cameras comprising an electronic image sensor
    • H04N5/23212Focusing based on image signals provided by the electronic image sensor
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141Constructional details thereof
    • H04N9/317Convergence or focusing systems

Abstract

The invention provides a kind of focus adjustment method of projection terminal, focus control and projection terminal, the projection terminal includes the first camera lens, and this method includes:Obtain the focus data that the second camera lens of image acquisition units is obtained to projection target focusing;The focal length of first camera lens is adjusted according to the focus data, to cause projection target described in first lens focusing.Focus adjustment method, focus control and the projection terminal for the projection terminal that the present invention is provided, the focus data obtained by obtaining the second camera lens of image acquisition units to focus projection target, and the focal length of first camera lens is adjusted according to the focus data, it can cause the focusing of the first camera lens of projection terminal according to the focus data of the second camera lens, realize automatic focusing, relative to the scheme of manual focusing, the accuracy of focusing can be effectively improved, meanwhile, it can also improve the stability and efficiency of focusing.

Description

Focus adjustment method, focus control and the projection terminal of projection terminal

Technical field

The present invention relates to projection field, more particularly to a kind of focus adjustment method of projection terminal, focus control and projection are eventually End.

Background technology

Projection terminal, it can be understood as it is a kind of can be by the output of light energy by image or VIDEO PROJECTION to extraneous end End equipment.Wherein, the focal length of projection lens is divided into image space focal length and object space focal length.Image space focal length is image space interarea to rear focus Distance, equally, object space focal length is exactly distance of the object space interarea to object focus.

For different projector distances, in order that obtaining imaging clearly, it is necessary to be focused to the focal length of projector lens.It is existing In some correlation techniques, generally by the way of manually focusing, the readability being imaged by eye-observation, manually regulation projection The projection lens of terminal.Observation and manual operation of the degree of accuracy of which focusing dependent on human eye, its accuracy are relatively low.

The content of the invention

The present invention provides a kind of focus adjustment method of projection terminal, focus control and projection terminal, to solve artificial focusing The problem of mode accuracy is relatively low.

According to the first aspect of the invention there is provided a kind of focus adjustment method of projection terminal, the projection terminal includes the One camera lens, including:

Obtain the focus data that the second camera lens of image acquisition units is obtained to projection target focusing;

The focal length of first camera lens is adjusted according to the focus data, to project described in first lens focusing Target;

Wherein, the first distance between first camera lens and the projection target and second camera lens and the projection mesh The gap of target second distance is less than the first gap value.

Optionally, the focal length that first camera lens is adjusted according to the focus data, including:

Second distance of second camera lens relative to the projection target is determined according to the focus data;

The first adjustment amount of the first eyeglass module of first camera lens is determined according to the second distance;

The position of the first eyeglass module is adjusted according to first adjustment amount, so as to adjust Jiao of first camera lens Away from.

Optionally, the position that the eyeglass module is adjusted according to first adjustment amount driving, including:

The rotation direction and amount of spin of the first motor of first camera lens are determined according to first adjustment amount;

First motor is driven according to the rotation direction and amount of spin, with cause the first eyeglass module adjust to The corresponding position of first adjustment amount.

Optionally, carried in the photo for the projection target that the focus data gathers for described image collecting unit Data.

Optionally, the focus data includes the second eyeglass module of second camera lens produced to projection target focusing The second adjustment amount.

According to the second aspect of the invention there is provided a kind of focus control of projection terminal, the projection terminal includes the One camera lens, including:

Image acquisition units, for being focused by the second camera lens to projection target;

Control unit, the focus data obtained for obtaining second camera lens to focus projection target, and according to described Focus data adjusts the focal length of first camera lens;

Wherein, the first distance between first camera lens and the projection target and second camera lens and the projection mesh The gap of target second distance is less than the first gap value.

Optionally, described control unit specifically for:

Second distance of second camera lens relative to the projection target is determined according to the focus data;

The first adjustment amount of the eyeglass module of first camera lens is determined according to the second distance;

The position of the first eyeglass module is adjusted according to first adjustment amount, so as to adjust Jiao of first camera lens Away from.

Optionally, described control unit specifically for:

The rotation direction and amount of spin of the motor of first camera lens are determined according to first adjustment amount;

The motor is adjusted according to the rotation direction and amount of spin driving, with cause the first eyeglass module adjust to The corresponding position of first adjustment amount.

According to the third aspect of the invention we there is provided a kind of projection terminal, including second aspect of the present invention and its optional side Focus control, the described image collecting unit of case offer, and described control unit.

Optionally, the projection terminal is mobile phone.

Focus adjustment method, focus control and the projection terminal for the projection terminal that the present invention is provided, by obtaining IMAQ The focus data that second camera lens of unit is obtained to projection target focusing, and first mirror is adjusted according to the focus data The focal length of head, can cause the focusing of the first camera lens of projection terminal according to the focus data of the second camera lens, realize certainly Dynamic focusing, relative to the scheme of manual focusing, can effectively improve the accuracy of focusing, meanwhile, it can also improve the steady of focusing Qualitative and efficiency.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also To obtain other accompanying drawings according to these accompanying drawings.

Fig. 1 is the schematic flow sheet of the focus adjustment method of a projection terminal of the invention;

Fig. 2 is the schematic flow sheet of S12 in the embodiment that Fig. 1 of the present invention illustrates;

Fig. 3 is the schematic flow sheet of S123 in the embodiment that Fig. 2 of the present invention illustrates;

Fig. 4 is the focus control of a projection terminal of the invention and the schematic diagram of projection terminal;

Fig. 5 is the schematic diagram of a projection terminal of the invention.

Description of reference numerals:

1- projection terminals;2- focus controls;3- image acquisition units;4- control units.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

Term " first ", " second ", " the 3rd " " in description and claims of this specification and above-mentioned accompanying drawing The (if present)s such as four " are for distinguishing similar object, without for describing specific order or precedence.It should manage The data that solution is so used can be exchanged in the appropriate case, so as to embodiments of the invention described herein for example can with except Order beyond those for illustrating or describing herein is implemented.In addition, term " comprising " and " having " and theirs is any Deformation, it is intended that covering is non-exclusive to be included, for example, containing the process of series of steps or unit, method, system, production Product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly or for this A little processes, method, product or the intrinsic other steps of equipment or unit.

Technical scheme is described in detail with specifically embodiment below.These specific implementations below Example can be combined with each other, and may be repeated no more for same or analogous concept or process in some embodiments.

Fig. 1 is the schematic flow sheet of the focus adjustment method of a projection terminal of the invention;Refer to Fig. 1, there is provided one kind projection The focus adjustment method of terminal, the projection terminal includes the first camera lens, and this method includes:

S11:Obtain the focus data that the second camera lens of image acquisition units is obtained to projection target focusing;

Wherein, image acquisition units can be any device of the second camera lens with adjustable focal length, can be enumerated as phase Machine, video camera, shooting are first-class, can also be enumerated as including any equipment of camera, video camera, camera, such as mobile phone.Throw Shadow terminal can be any terminal with projecting function, such as projecting apparatus, mobile phone with projecting function etc..

Wherein, focus data, it can be understood as the arbitrary data of focusing generation, Ke Yilie are carried out based on image acquisition units Lift the rotation side of the second adjustment amount of the second eyeglass module for focal length data, the second camera lens or the second motor of the second camera lens To with amount of spin.

In one of which embodiment, the focus data is the projection target that described image collecting unit is gathered The data carried in photo.The focus data of the embodiment is easy to extract.

In one of which embodiment, the focus data includes second camera lens produced to projection target focusing Second adjustment amount of the second eyeglass module.The embodiment can be conducive to calculating second camera lens relative to the projection target Second distance, effectively improve computational efficiency.Meanwhile, under the embodiment, taken pictures without actual, internal memory money can be saved Source, and the second adjustment amount extracted may be directly applied to calculate the second camera lens relative to the distance of projection target, can be conducive to Simplify calculating process, improve computational efficiency.

The focus adjustment method of the projection terminal provided is by obtaining the second camera lens of image acquisition units to projection target pair The focus data that Jiao obtains, can cause the focusing of the first camera lens of projection terminal according to the focus data of the second camera lens, The data are quantized data, can be conducive to improving accuracy, stability and the efficiency focused.

S12:The focal length of first camera lens is adjusted according to the focus data, to cause described in first lens focusing Projection target;

Wherein, the first distance between first camera lens and the projection target and second camera lens and the projection mesh The gap of target second distance is less than the first gap value.

Projection target, it can be understood as any object being projected, such as projection screen or metope, in concrete example In, irregular shape face or stereochemical structure can also be used.The first described distance and second distance can be the first mirror Head and the second camera lens reach the distance of projection target along its projecting direction, it is of course also possible to refer to the first camera lens and the second camera lens water Distance flat, vertical or that projection target is reached along specific direction, if projection target is curved surface, stereochemical structure etc., described first Distance and second distance may also be understood to be the statistical value of quantization.

Meanwhile, the gap between the first distance and second distance is less than the first gap value, is not offered as implementing the present invention When need to predefine the concrete numerical value of this first gap value, only need to meet this description and not depart from the scope of the present invention then. Wherein, the introducing of the first distance and second distance and the first gap value is passed through, it is intended to express the first camera lens and the second camera lens phase For the position between projection target the focus data can be caused to be applied to realize the focusing of the first camera lens, as Any first gap value under principle, all meets description of the invention.Based on different environment, scene, different projection terminals, Image acquisition units, and different projection targets, the first described gap value all may correspondingly change.In it Spirit is to determine both range differences away from not big enough, or is interpreted as range difference away from more than the first gap value, then according to described Focus data focusing can not cause projection imaging clear.

In one of which citing, identical position can be in relative to projection target for both, can in another citing Think that both are arranged side by side on before projection target, so that the first distance is equal or similar with second distance.

The focal length of first camera lens is adjusted according to the focus data, the tune of the first camera lens of projection terminal can be caused Jiao is realized automatic focusing, relative to the scheme of manual focusing, can effectively carried according to the focus data of the second camera lens The accuracy of height focusing, meanwhile, it can also improve the stability and efficiency of focusing.

Fig. 2 be Fig. 1 of the present invention signal embodiment in S12 schematic flow sheet, in one of which embodiment, please join Examine Fig. 2, the focal length that first camera lens is adjusted according to the focus data, i.e. step S12, including:

S121:Second distance of second camera lens relative to the projection target is determined according to the focus data;

Wherein, the focus data of the second camera lens can correspond to focal length or the second offset etc., and focal length can correspond to The distance between second camera lens and projection target, according to the concrete structure of the physical knowledge of focusing, and camera lens, you can realize this The establishment of the corresponding relation of quantization.Corresponding relation based on this quantization, you can accomplish according to being determined the focus data Distance of second camera lens relative to the projection target.

In one embodiment, the relation between the second adjustment amount and second distance can be such as following table:

S122:The first adjustment amount of the first eyeglass module of first camera lens is determined according to the second distance;

Wherein, the first adjustment amount can be regarded as the mobile data of the adjustment of specific eyeglass in the first eyeglass module.

In one of which embodiment, the relation of the first adjustment amount and the first distance is referred to the second adjustment amount and second The relation of distance understands that the specific quantization corresponding relation of the first adjustment amount and the first distance can be with the second adjustment amount and The specific quantization corresponding relation of two distances is identical, in the case where the first camera lens is different from the second camera lens, and the specific correspondence that quantifies is closed System can also be different.Those skilled in the art can be different according to the parameter of camera lens, determine that two kinds specific quantify pair respectively It should be related to.

S123:The position of the first eyeglass module is adjusted according to first adjustment amount, so as to adjust first mirror The focal length of head.

Fig. 3 is the schematic flow sheet of S123 in the embodiment that Fig. 2 of the present invention illustrates;In one of which embodiment, mirror The movement of piece module is that the rotation of the first motor is driven, so, Fig. 3 is refer to, it is described to be driven according to first adjustment amount The position of the dynamic adjustment eyeglass module, i.e. step S123, including:

S1231:The rotation direction and amount of spin of the first motor of first camera lens are determined according to first adjustment amount;

S1232:First motor is driven according to the rotation direction and amount of spin, to cause the first eyeglass module Adjust position corresponding to first adjustment amount.

In wherein a kind of embodiment, the focus data can also include the rotation side of the second motor of the second camera lens To with amount of spin so that directly conversion obtains the rotation direction and amount of spin of first motor.Which is relatively easy, it is easy to Calculate.

The focus adjustment method for the projection terminal that the present invention is provided, by obtaining the second camera lens of image acquisition units to projection mesh The focus data that mark focusing is obtained, and according to the focal length of focus data adjustment first camera lens, projection can be caused The focusing of first camera lens of terminal realizes automatic focusing according to the focus data of the second camera lens, relative to manual tune Burnt scheme, can effectively improve the accuracy of focusing, meanwhile, it can also improve the stability and efficiency of focusing.

Fig. 4 is the focus control of a projection terminal of the invention and the schematic diagram of projection terminal;It refer to Fig. 4, one kind projection The focus control 2 of terminal, the projection terminal 1 includes the first camera lens, and the focus control 2 includes:

Image acquisition units 3, for being focused by the second camera lens to projection target;

Control unit 4, the focus data obtained for obtaining second camera lens to focus projection target, and according to described Focus data adjusts the focal length of first camera lens;

Wherein, the first distance between first camera lens and the projection target and second camera lens and the projection mesh The gap of target second distance is less than the first gap value.

In one of which embodiment, described control unit 4 specifically for:

Second distance of second camera lens relative to the projection target is determined according to the focus data;

The first adjustment amount of the eyeglass module of first camera lens is determined according to the second distance;

The position of the first eyeglass module is adjusted according to first adjustment amount, so as to adjust Jiao of first camera lens Away from.

In one of which embodiment, described control unit 4 specifically for:

The rotation direction and amount of spin of the motor of first camera lens are determined according to first adjustment amount;

The motor is adjusted according to the rotation direction and amount of spin driving, with cause the first eyeglass module adjust to The corresponding position of first adjustment amount.

In the embodiment of Fig. 4 signals, the projection terminal 1 can be projecting apparatus, mobile phone etc., and focus control 2 can be Independently of the external device of projection terminal 1.In one of which citing, focus control 2 can also be a mobile phone, the control of mobile phone Device can be used as described image collecting unit 3 as described control unit 4, the camera of mobile phone.

Fig. 5 is the schematic diagram of a projection terminal of the invention;Fig. 5 be refer to there is provided a kind of projection terminal 1, including it is described Focus control 2, it is seen then that the focus control 2 can be projection terminal 1 a part.In citing, the projection terminal 1 Can be for mobile phone, projecting apparatus etc., the work(that focus control 2 is realized for the controller and camera that are built in mobile phone or projecting apparatus Can, specific it is to be understood that the controller can be as described control unit, the camera can gather single as described image Member.

The focus control 2 of the projection terminal 1 that the present invention is provided and projection terminal 1, by obtain image acquisition units 3 the The focus data that two camera lenses are obtained to projection target focusing, and according to Jiao of focus data adjustment first camera lens Away from the focusing of the first camera lens of projection terminal 1 can be caused according to the focus data of the second camera lens, to realize automatic tune Jiao, relative to the scheme of manual focusing, can effectively improve the accuracy of focusing, meanwhile, can also improve focusing stability and Efficiency.

Focus control 2 and projection terminal 1 shown in the present embodiment, it is accordingly real available for method shown in Fig. 1 to Fig. 3 is implemented The technical scheme of example is applied, the implication of its realization principle, technique effect and term is similar, and here is omitted.

One of ordinary skill in the art will appreciate that:Realizing all or part of step of above-mentioned each method embodiment can lead to The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey Sequence upon execution, performs the step of including above-mentioned each method embodiment;And foregoing storage medium includes:ROM, RAM, magnetic disc or Person's CD etc. is various can be with the medium of store program codes.

Finally it should be noted that:Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations;To the greatest extent The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that:Its according to The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered Row equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims (10)

1. a kind of focus adjustment method of projection terminal, the projection terminal includes the first camera lens, it is characterised in that including:
Obtain the focus data that the second camera lens of image acquisition units is obtained to projection target focusing;
The focal length of first camera lens is adjusted according to the focus data, to project mesh described in first lens focusing Mark;
Wherein, the first distance between first camera lens and the projection target and second camera lens and the projection target The gap of second distance is less than the first gap value.
2. according to the method described in claim 1, it is characterised in that described that first camera lens is adjusted according to the focus data Focal length, including:
Second distance of second camera lens relative to the projection target is determined according to the focus data;
The first adjustment amount of the first eyeglass module of first camera lens is determined according to the second distance;
The position of the first eyeglass module is adjusted according to first adjustment amount, so as to adjust the focal length of first camera lens.
3. method according to claim 2, it is characterised in that described that the mirror is adjusted according to first adjustment amount driving The position of piece module, including:
The rotation direction and amount of spin of the first motor of first camera lens are determined according to first adjustment amount;
First motor is driven according to the rotation direction and amount of spin, to cause the first eyeglass module to adjust to described The corresponding position of first adjustment amount.
4. the method according to any one of claims 1 to 3, it is characterised in that the focus data gathers for described image The data carried in the photo of the projection target of unit collection.
5. the method according to any one of claims 1 to 3, it is characterised in that the focus data is included to projection target Second adjustment amount of the second eyeglass module of second camera lens that focusing is produced.
6. a kind of focus control of projection terminal, the projection terminal includes the first camera lens, it is characterised in that including:
Image acquisition units, for being focused by the second camera lens to projection target;
Control unit, the focus data obtained for obtaining second camera lens to focus projection target, and according to the focusing The focal length of first camera lens described in data point reuse;
Wherein, the first distance between first camera lens and the projection target and second camera lens and the projection target The gap of second distance is less than the first gap value.
7. device according to claim 6, it is characterised in that described control unit specifically for:
Second distance of second camera lens relative to the projection target is determined according to the focus data;
The first adjustment amount of the eyeglass module of first camera lens is determined according to the second distance;
The position of the first eyeglass module is adjusted according to first adjustment amount, so as to adjust the focal length of first camera lens.
8. device according to claim 7, it is characterised in that described control unit specifically for:
The rotation direction and amount of spin of the motor of first camera lens are determined according to first adjustment amount;
The motor is adjusted according to the rotation direction and amount of spin driving, to cause the first eyeglass module to adjust to described The corresponding position of first adjustment amount.
9. a kind of projection terminal, it is characterised in that:Including the focus control described in any one of claim 6 to 8.
10. projection terminal according to claim 9, it is characterised in that:The projection terminal is mobile phone.
CN201710452922.XA 2017-06-15 2017-06-15 Focus adjustment method, focus control and the projection terminal of projection terminal CN107155097A (en)

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CN201926858U (en) * 2010-12-31 2011-08-10 深圳展景世纪科技有限公司 Projector
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