CN102902139A - Vision field extended system and method of imaging device and mobile phone - Google Patents
Vision field extended system and method of imaging device and mobile phone Download PDFInfo
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- CN102902139A CN102902139A CN2012104043609A CN201210404360A CN102902139A CN 102902139 A CN102902139 A CN 102902139A CN 2012104043609 A CN2012104043609 A CN 2012104043609A CN 201210404360 A CN201210404360 A CN 201210404360A CN 102902139 A CN102902139 A CN 102902139A
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Abstract
The invention relates to a vision field extended system and method of an imaging device and a mobile phone, wherein the vision field extended system of the imaging device comprises a plane reflector and a reflector control mechanism, wherein the plane reflector is arranged on an optical axis in front of the objective lens of the imaging device and used for reflecting external lights into the objective lens of the imaging device; and the reflector control mechanism is used for regulating the oriented angle and/or direction of the plane reflector. As the plane reflector is additionally arranged in front of the objective lens of the imaging device so as to reflect the external lights into the imaging device, a vision field can be extended to the angle which cannot reached by the traditional lens, the image quality is not affected, and the problems of high cost and difficulty in processing, when an aspherical lens is adopted, are avoided.
Description
Technical field
The present invention relates to technical field of imaging, more particularly, relate to a kind of imaging device visual field expanding system and method, especially adopt the mobile phone of this imaging device visual field expanding system.
Background technology
In existing market, there is greatly the trend that replaces traditional camera market in the camera market of mobile phone, but the development of the camera of mobile phone can not be confined to the sharpness that makes to improve picture element of the image sensings such as present CCD and COMS fully, certainly will need camera lens to improve the imaging effect of camera.Mostly method in early expansion imaging device visual field is to adopt the spherical reflector group, its weight is large, impact resistance is relatively poor, spherical reflector also can unavoidably bring the curvature of field, distortion etc. on the impact of picture element in addition, need to increase lens and carry out the correction of aberration and aberration, must increase like this cost, weight and also can strengthen.Along with the appearance of non-spherical lens, extended field of view can use spherical lens and non-spherical lens is combined with, and makes aberration and chromatic aberration correction get up to be more prone to.
The mode that the non-spherical lenses of at present majority use and spherical lens combine, the use of non-spherical lens spherical lens edge than before is thinner, the light of lens centre and the light of edge can focus on same position, can effectively reduce spherical aberration, can also improve the relative aperture of system, and can improve optical property and reduce eyeglass quantity by adjusting asphericity coefficient.But use the cost of non-spherical lens very high, if use glass material larger than plastic material weight, and the absorptivity of plastic lens is higher than the absorptivity of glass lens.Plastic lens especially severe affected by environment, thereby cause the uneven distribution of lens can cause the inconsistent of refractive index, usually adopt at present water-intake rate not to be higher than 0.7% plastic material, but the optical property of plastic lens still can not changed by the impact of external environment.In addition, the hardness of optical plastic is less than optical glass, so the resistance to marring of optical plastic lens is relatively poor, this also affects the degree of accuracy of imaging.
Although can adopt the form of spherical lens and non-spherical lens combination to realize the visual field expansion, in fact correct aberrations and aberration (except spherical aberration and the axial chromatic aberration) are very difficult, also can not eliminate the impact on picture element fully.
Summary of the invention
The technical problem to be solved in the present invention is, visual field expansion cost of parts height and the not high defective of image quality for existing imaging device, a kind of imaging device visual field expanding system and method that adopts plane mirror to carry out the visual field expansion is provided, and uses the mobile phone of this imaging device visual field expanding system.
The invention provides a kind of imaging device visual field expanding system, comprising: be arranged at the plane mirror on object lens the place ahead optical axis of imaging device, described plane mirror is used for the object lens that the reflection extraneous light enters described imaging device; And the catoptron control gear, be used for adjusting described plane mirror towards angle and/or orientation.
In according to imaging device of the present invention visual field expanding system, described plane mirror has central openings, and described plane mirror has the initial position of the object lens that are parallel to described imaging device.
In according to imaging device of the present invention visual field expanding system, described imaging device visual field expanding system also comprises: control module starts described catoptron control gear for transmission catoptron control signal and adjusts described plane mirror.
In according to imaging device of the present invention visual field expanding system, described catoptron control gear further comprises: pitch control subsystem mechanism is used for adjusting the luffing angle that the optical axis of the object lens of described plane mirror and described imaging device is; And the orientation control gear, be used for adjusting described plane mirror around the orientation angles of the optical axis rotation of the object lens of described imaging device.
In according to imaging device of the present invention visual field expanding system, described pitch control subsystem mechanism further comprises for fixing described plane mirror and rotates to adjust the pitching rotary of described luffing angle, and is used for the pitch control subsystem module that receives the catoptron control signal of described control module and control described pitching rotary; Described orientation control gear further comprises for fixing described plane mirror and rotates to adjust the azimuth rotating platform of described orientation angles, and is used for the orientation control module that receives the catoptron control signal of described control module and control described azimuth rotating platform.
In according to imaging device of the present invention visual field expanding system, described pitch control subsystem mechanism also comprises the pitching data acquisition module, is used for gathering the luffing angle of described plane mirror and feeding back to described control module; Described orientation control gear also comprises the bearing data acquisition module, is used for gathering the orientation angles of described plane mirror and feeding back to described control module.
The present invention also provides a kind of mobile phone, and described mobile phone comprises aforesaid imaging device visual field expanding system.
The present invention also provides a kind of imaging device visual field extended method, may further comprise the steps: adjust on the object lens the place ahead optical axis be arranged at imaging device plane mirror towards angle and/or orientation; Control imaging device photographic images.
In according to imaging device of the present invention visual field extended method, described adjustment be arranged on object lens the place ahead optical axis of imaging device plane mirror towards angle and/or orientation specifically comprise: adjust the luffing angle that the optical axis of the object lens of described plane mirror and described imaging device is; And/or adjust described plane mirror around the orientation angles of the optical axis rotation of the object lens of described imaging device.
In according to imaging device of the present invention visual field extended method, described imaging device visual field extended method also comprises: gather the luffing angle of described plane mirror and/or orientation angles and show and/or proofread.
Implement imaging device of the present invention visual field expanding system and method and mobile phone, have following beneficial effect: the present invention is by setting up plane mirror before the object lens of imaging device, enter imaging device with the reflection extraneous light, the visual field can be expanded to the inaccessiable angle of conventional lenses, and neither can impact picture element, avoided again adopting the high-leveled and difficult problems in processing of cost such as non-spherical lens, can also side have been taken by target simultaneously, made shooting process convenient and hidden.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the synoptic diagram of the first embodiment of image-forming apparatus according to the present invention visual field expanding system;
Fig. 2 is the synoptic diagram of the second embodiment of image-forming apparatus according to the present invention visual field expanding system;
Fig. 3 is the synoptic diagram of the 3rd embodiment of image-forming apparatus according to the present invention visual field expanding system;
Fig. 4 is the light path synoptic diagram of image-forming apparatus according to the present invention visual field expanding system;
Fig. 5 is the process flow diagram of image-forming apparatus according to the present invention visual field extended method.
Embodiment
The present invention is by reaching the purpose that the visual field is expanded at camera or other the place ahead mounting plane catoptron that possesses the imaging device of shoot function.In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.
See also Fig. 1, be the synoptic diagram of the first embodiment of image-forming apparatus according to the present invention visual field expanding system.As shown in Figure 1, imaging device provided by the invention visual field expanding system mainly comprises: plane mirror 10 and catoptron control gear 20.Wherein plane mirror 10 is arranged on the optical axis of object lens 8 of object lens 8 these imaging devices of the place ahead of imaging device.This catoptron control gear 20 is used for adjusting the position of plane mirror 10, so that the light of the outside diverse location of imaging device can enter by the reflection of plane mirror 10 object lens 8 of imaging device, and then imaging on imageing sensor 7.For example catoptron control gear 20 can adjust plane mirror 10 towards angle and/or orientation so that the light of exterior object 9 can enter by the reflection of plane mirror 10 the imaging device imaging.
Above-mentioned plane mirror 10 can be a complete circular flat catoptron, also can preferably be set to the plane mirror with central openings as shown in Figure 1.When plane mirror 10 is when having the plane mirror of central openings, this plane mirror 10 has the initial position of the object lens 8 that are parallel to described imaging device, namely this plane mirror is parallel to the object lens 8 of imaging device, the lower time of common screening-mode that does not need to carry out the visual field expansion at imaging device, can not start catoptron control gear 20, the central openings that extraneous light can directly pass plane mirror 10 incides on the object lens 8, and then realizes the normal photographing under the general mode.When needs realize carrying out the visual field expansion takes visual field mode of extension, can by catoptron control gear 20 adjust plane mirror 10 towards angle and/or orientation, make the light path turnover reach the purpose of visual field expansion.As expanding through the visual field among Fig. 1, can photograph the image that is the exterior object 9 of 90 positions of spending with the optical axis of object lens 8.
In a preferred embodiment of the invention, the diameter of the central openings of above-mentioned plane mirror is comprehensively to choose according to visual field size and the image picture element of needs when not starting rotary system.This area basic technology personnel can choose with reference to correlation computations formula and software analysis result.
Any angle of adjustment plane mirror 9 and/or mechanism in orientation of can be used in that catoptron control gear 20 of the present invention can adopt this area basic technology personnel to know is such as manual control mechanism or servo control mechanism.This catoptron control gear 20 preferably can be adjusted plane mirror 9 towards arbitrarily angled and/or arbitrary orientation.
See also Fig. 2, be the synoptic diagram of the second embodiment of image-forming apparatus according to the present invention visual field expanding system.In a second embodiment, catoptron control gear 20 preferably includes pitch control subsystem mechanism 21 and orientation control gear 22.
Wherein, pitch control subsystem mechanism 21 is used for adjusting the luffing angle of plane mirror 10, i.e. the angle that is of the optical axis of plane mirror 10 and the object lens 8 of imaging device.Orientation control gear 22 is used for adjusting the orientation angles of plane mirror 10, and namely control plane catoptron 10 rotates around the optical axis of the object lens 8 of imaging device, so adjust 10 of plane mirrors towards the orientation.
Above-mentioned pitch control subsystem mechanism 21 and orientation control gear 22 can all be realized by turntable and manual control mechanism, also can preferably realize by electric control mechanism.Preferably control by setting up control module 30 in the imaging device visual field expanding system of present embodiment, namely control module 30 is used for sending the catoptron control signal to catoptron control gear 20, and then control plane catoptron 10 is adjusted the position according to user's needs.Control module 30 is also finished shooting by shutter control imageing sensor 7.
See also Fig. 3, be the synoptic diagram of the 3rd embodiment of image-forming apparatus according to the present invention visual field expanding system.In the 3rd embodiment, catoptron control gear 20 is realized by turntable and relevant control module.
Wherein, pitch control subsystem mechanism 21 further comprises pitching rotary 211 and pitch control subsystem module 212.Wherein, pitching rotary 211 is used for fixed pan catoptron 10, and rotates to adjust the luffing angles that optical axis was plane mirror 10 and object lens 8 imaging device.Pitch control subsystem module 212 is used for receiving the catoptron control signal of control module 30 transmissions and sends the pitch control subsystem signal with control pitching rotary 211.
Described orientation control gear 22 further comprises azimuth rotating platform 221 and orientation control module 222.Wherein, azimuth rotating platform 221 is used for fixed pan catoptron 10, and rotates to adjust plane mirror 10 around the orientation angles of the optical axis rotation of the object lens 8 of imaging device.Orientation control module 222 is used for receiving the catoptron control signal of control module 30 transmissions and sending the orientation control signal with control azimuth turntable 221.
In a preferred embodiment of the invention, this catoptron control gear 20 also comprises the data acquisition module for detection of the position of plane mirror 10, particularly, this data acquisition module includes but not limited to pitching data acquisition module and bearing data acquisition module, be respectively applied to luffing angle value and the orientation angles value of acquisition plane catoptron, and feed back to control module 30, so that proofread and correct the position of 30 pairs of plane mirrors 10 of control module.For example, pitch control subsystem mechanism 21 also comprises pitching data acquisition module 213, is used for the luffing angle of acquisition plane catoptron 10 and feeds back to control module 30.Orientation control gear 22 also comprises bearing data acquisition module 223, is used for the orientation angles of acquisition plane catoptron 10 and feeds back to control module 30.
When plane mirror 10 is fixed on when carrying out the motion of pitching and orientation on pitching rotary 211 and the azimuth rotating platform 221, above-mentioned pitching data acquisition module 213 and bearing data acquisition module 223 can be realized by luffing angle value and the orientation angles value that gathers pitching rotary 211 and azimuth rotating platform 221 respectively.
The use flow process of imaging device of the present invention visual field expanding system is as follows:
At first, judge the screening-mode of imaging device, the user can select according to the needs pattern of oneself, whether needs the photograph effect of visual field expansion.
When screening-mode is common screening-mode, when namely not needing to carry out the visual field expansion, do not open catoptron control gear 20, take but directly send a signal to shutter according to user instruction, this moment, plane mirror 10 was parallel to the object lens 8 of imaging device, so that can passing the central openings of plane mirror 10, extraneous light incides on the object lens 8, and then the normal photographing under the realization general mode.
When screening-mode is the visual field mode of extension, namely when needs carry out the visual field expansion, control module 30 can arrange instruction according to the visual field mode of extension of user's input, send the catoptron control signal and adjust luffing angle and the orientation angles of plane mirror 10, and then take the image of outside diverse location.When the mode of extension of visual field, control module 10 can feed back to the user with luffing angle and the orientation angles value of current plane mirror 10, and adjusts luffing angle and the orientation angles of plane mirror 10 according to user's instruction.In another embodiment, control module 30 also can be presented to the user with the image of imaging device collection under current plane mirror 10 states, the user can be by button or alternate manner input instruction, luffing angle and/or orientation angles to plane mirror are adjusted, and obtain the image in a certain required orientation.If when only needing the shooting on pitch orientation or the azimuth direction, then 30 controls that need startup orientation control gear 22 or pitch control subsystem mechanism 21 to carry out plane mirror 10 of control module get final product; If when needing simultaneously to adjust pitch orientation or azimuth direction and making a video recording, then control module can be adjusted to desired location according to instruction control azimuth control gear 22 and pitch control subsystem mechanism 21.
In other embodiment of the present invention, the user also can set the pan-shot pattern, sends a series of catoptron control signals and shutter signal by control module 30, takes the image of different azimuth, and then is spliced into a complete image.For example, at first start 212 controls of pitch control subsystem module the needed angle of pitching rotary 211 rotations of plane mirror 10 is housed, and then start orientation control module 222 and drive azimuth rotating platform 221 and rotate the auxiliary omnibearing camera work of finishing, the angle that while pitching rotary 211 and azimuth rotating platform 221 turn over feeds back in the control module 30 by data acquisition module separately, and finally applies in the splicing of image.
See also Fig. 4, be the light path synoptic diagram of image-forming apparatus according to the present invention visual field expanding system.As shown in Figure 4, in order to adapt to the requirement of different angles photography, the present invention expands the visual field of imaging device by the image theory of plane mirror 10.When plane mirror 10 rotation angle θ, reflection ray has just changed 2 θ accordingly, and the corresponding expansion Δ of the coverage of imaging device S so only needs rotational plane catoptron 10 very little angles just can reach the purpose of comprehensive photography.As shown in Figure 4, the ultimate principle according to geometrical optics can draw:
ΔS=L·tg2θ (1)
L is that the plane mirror point of rotation is to the vertical range of photographed in the formula.
When the θ angle is very little, tg2 θ ≈ 2 θ are arranged, substitution formula (1) can get:
ΔS≈L·2θ (2)
This shows, can the scope of photographed be increased by rotary plane reflecting mirror 10, thereby reach the purpose to the expansion of imaging device visual field.The scope of Θ can be 0-90 °, and owing to the imaging device especially space constraint of mobile phone, Θ can be set to 0-75 °.
The present invention is also corresponding to provide a kind of imaging device, comprises aforesaid imaging device visual field expanding system, such as the camera that above-mentioned imaging device visual field expanding system has been installed and video camera etc.Preferably, the present invention also is applied to imaging device visual field expanding system on the mobile phone, and a kind of mobile phone namely is provided, and aforesaid imaging device visual field expanding system has been installed.
See also Fig. 5, the present invention is corresponding a kind of imaging device visual field extended method that provides also, can realize by set up above-mentioned imaging device visual field expanding system at common imaging device, and may further comprise the steps:
At first, in step S501, adjust on the object lens the place ahead optical axis be arranged at imaging device plane mirror towards angle and/or orientation.In a preferred embodiment of the invention, this step can comprise: the luffing angle that the optical axis of the object lens of adjustment plane mirror and imaging device is; And/or adjust plane mirror around the orientation angles of the optical axis rotation of the object lens of imaging device.This step is consistent with implementation procedure and the principle of above-mentioned imaging device visual field expanding system, does not repeat them here.
Subsequently, in step S502, control imaging device photographic images.
This imaging device visual field extended method also comprises: the luffing angle of acquisition plane catoptron and/or orientation angles show and/or proofread.This step is consistent with the realization of data acquisition module in the expanding system of above-mentioned imaging device visual field, for example can be by pitching data acquisition module 213 and bearing data acquisition module 223, be respectively applied to luffing angle value and the orientation angles value of acquisition plane catoptron, and feed back to control module 30, so that control module 30 is shown to the user, perhaps the position of plane mirror 10 is proofreaied and correct.
It is very serious on the imaging effect impact that the present invention considers that present original method is carried out visual field expansion meeting, can only increase again lens and be optimized in order to reach better imaging effect, but both bring like this increase of cost that the operating distance of imaging device is increased.Using planar catoptron of the present invention carries out the expansion of visual field, and can reach 180 ° comprehensive photography and can not impact picture element again, has simplified the difficulty that the process optimized and non-spherical lens are difficult to process fully.This is use to increase the angle that the method for lens can not reach.Be used for simultaneously changing the middle perforate of plane mirror employing of light angle, when not needing large-field shooting, need not start the catoptron control gear fully and just can finish normal shooting process like this.
In addition, for imaging optical system, general relative exposure is the bigger the better, and generally speaking, full visual field relative exposure along with the increase of visual field, will cause the angle of outgoing chief ray also increasing greater than 0.5, and relative exposure is descended.Using planar catoptron of the present invention carries out the rotation of light, and light can not reduce because of the expansion of visual field.And the present invention is owing to adopt reflect system can consider that the conventional aberration that brings by the method that increases lens and aberration (except spherical aberration and the axial chromatic aberration) are on the impact of picture element.
Imaging device of the present invention also can satisfy some special photographing requests, for example in use imaging device just can be able to be finished shooting facing to photographic subjects fully, makes shooting process convenient and hidden.
The present invention can one dispose or be applied on the imaging devices commonly used such as camera and video camera by the detachable mode, when for example adopting the mode of detachable to be fixed, can install at any time when needed this imaging device visual field expanding system and get final product, more convenient to use.And camera and video camera need not to consider the length of operating distance in design process, also are more prone to realize.
The present invention also can be applied on the camera of mobile phone, because the thickness of mobile phone is limited, the operating distance of its visual field expanding system should be as much as possible little, so can carry out turning back of light path by being used as plane mirror at mobile phone cam front right angle trigonometry prism of increase, azimuth rotating platform is sunk enter interior of mobile phone, thereby satisfy mobile phone to the requirement of camera operating distance.Also can adopt in addition the mode of detachable, so not only can save the space but also reach the effect of portable.
The present invention is described according to specific embodiment, but it will be understood by those skilled in the art that when not breaking away from the scope of the invention, can carry out various variations and be equal to replacement.In addition, for adapting to specific occasion or the material of the technology of the present invention, can carry out many modifications and not break away from its protection domain the present invention.Therefore, the present invention is not limited to specific embodiment disclosed herein, and comprises that all drop into the embodiment of claim protection domain.
Claims (10)
1. an imaging device visual field expanding system is characterized in that, comprising:
Be arranged at the plane mirror on object lens the place ahead optical axis of imaging device, described plane mirror is used for the object lens that the reflection extraneous light enters described imaging device;
The catoptron control gear, be used for adjusting described plane mirror towards angle and/or orientation.
2. imaging device according to claim 1 visual field expanding system it is characterized in that described plane mirror has central openings, and described plane mirror has the initial position of the object lens that are parallel to described imaging device.
3. imaging device according to claim 1 and 2 visual field expanding system is characterized in that described imaging device visual field expanding system also comprises:
Control module starts described catoptron control gear for transmission catoptron control signal and adjusts described plane mirror.
4. imaging device according to claim 3 visual field expanding system is characterized in that described catoptron control gear further comprises:
Pitch control subsystem mechanism is used for adjusting the luffing angle that the optical axis of the object lens of described plane mirror and described imaging device is;
The orientation control gear is used for adjusting described plane mirror around the orientation angles of the optical axis rotation of the object lens of described imaging device.
5. imaging device according to claim 4 visual field expanding system is characterized in that:
Described pitch control subsystem mechanism further comprises for fixing described plane mirror and rotates to adjust the pitching rotary of described luffing angle, and is used for the pitch control subsystem module that receives the catoptron control signal of described control module and control described pitching rotary;
Described orientation control gear further comprises for fixing described plane mirror and rotates to adjust the azimuth rotating platform of described orientation angles, and is used for the orientation control module that receives the catoptron control signal of described control module and control described azimuth rotating platform.
6. imaging device according to claim 4 visual field expanding system is characterized in that:
Described pitch control subsystem mechanism also comprises the pitching data acquisition module, is used for gathering the luffing angle of described plane mirror and feeding back to described control module;
Described orientation control gear also comprises the bearing data acquisition module, is used for gathering the orientation angles of described plane mirror and feeding back to described control module.
7. a mobile phone is characterized in that, described mobile phone comprises the described imaging device of any one visual field expanding system among the claim 1-6.
8. an imaging device visual field extended method is characterized in that, may further comprise the steps:
Adjustment be arranged on object lens the place ahead optical axis of imaging device plane mirror towards angle and/or orientation;
Control imaging device photographic images.
9. imaging device according to claim 8 visual field extended method is characterized in that, described adjustment be arranged on object lens the place ahead optical axis of imaging device plane mirror towards angle and/or orientation specifically may further comprise the steps:
Adjust the luffing angle that the optical axis of the object lens of described plane mirror and described imaging device is; And/or
Adjust described plane mirror around the orientation angles of the optical axis rotation of the object lens of described imaging device.
10. imaging device according to claim 9 visual field extended method is characterized in that described imaging device visual field extended method is further comprising the steps of:
Gathering the luffing angle of described plane mirror and/or orientation angles shows and/or proofreads.
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| CN111010513A (en) * | 2019-12-23 | 2020-04-14 | 北大方正集团有限公司 | Picture acquisition method and system and terminal equipment |
| CN111182225A (en) * | 2020-02-26 | 2020-05-19 | Oppo广东移动通信有限公司 | Photographing control method, electronic device and non-volatile computer-readable storage medium |
| CN111541833A (en) * | 2020-04-29 | 2020-08-14 | 维沃移动通信有限公司 | Camera module, electronic equipment and camera shooting method |
| CN116939369A (en) * | 2023-07-06 | 2023-10-24 | 钛玛科（北京）工业科技有限公司 | Panoramic image acquisition method based on optical imaging technology |
| CN116939369B (en) * | 2023-07-06 | 2024-02-27 | 钛玛科（北京）工业科技有限公司 | Based on optical imaging technique panoramic image acquisition method of (a) |
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