CN1519608A - Camera head and its control method - Google Patents
Camera head and its control method Download PDFInfo
- Publication number
- CN1519608A CN1519608A CNA2003101038722A CN200310103872A CN1519608A CN 1519608 A CN1519608 A CN 1519608A CN A2003101038722 A CNA2003101038722 A CN A2003101038722A CN 200310103872 A CN200310103872 A CN 200310103872A CN 1519608 A CN1519608 A CN 1519608A
- Authority
- CN
- China
- Prior art keywords
- voltage
- camera head
- deformable mirror
- shape
- applies
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Images
Landscapes
- Studio Devices (AREA)
- Focusing (AREA)
- Lenses (AREA)
- Structure And Mechanism Of Cameras (AREA)
- Lens Barrels (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
- Automatic Focus Adjustment (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
Provided is an imaging unit whose power consumption is further reduced by selectively performing continuous voltage application and intermittent voltage application according to conditions of the imaging unit to hold the shape of a reflection surface of a shape-changeable mirror used for an optical system. The imaging unit is equipped with an imaging part 1 which comprises an optical system, using the shape-changeable mirror 3 such that the shape of a mirror main body changing an optical path is changed by voltage application, and an imaging device 4 and a shape-changeable mirror driving part 7 which controls a voltage applied to the shape-changeable mirror. The shape-changeable mirror driving part selects and sets the continuous voltage application and intermittent voltage application according to a photographic mode, variable zoom magnification, whether a through image display is made, the remaining capacity of a battery, etc., and selects and sets voltage intervals of the intermittent voltage application time for driving to hold the shape of the mirror main body of the shape-changeable mirror constant.
Description
Technical field
The present invention relates to have the camera head and the control method thereof of the optical system of the feature that can effectively utilize deformable mirror.
Background technology
Patent documentation 1: the spy opens flat 11-317894 communique
Patent documentation 2: the spy opens the 2002-122784 communique
In general, in picture pick-up device such as camera and display device, optical system about mostly the size and the performance of equipment integral.Therefore,, especially improve the performance of relevant miniaturization, low consumption electrification, often require optical system miniaturization and low consumption electrification in order to improve camera and picture pick-up device and improvement of display devices.Particularly in the field as the camera unit of the digital camera of digital picture pick-up device and mobile phone, its requirement is very strong.As the miniaturization that solves this optical system, the device of low consumption electrification, for example open flat 11-317894 communique (patent documentation 1), the spy opens in the 2002-122784 communique (patent documentation 2) and proposed deformable mirror the spy.
Below, according to Figure 10 (A) and Figure 10 (B), an example of the deformable mirror that proposes in the above-mentioned communique is described.Figure 10 (A) is a planimetric map, and Figure 10 (B) is that the X-X ' of Figure 10 (A) is to looking sectional drawing.Shown in Figure 10 (A), Figure 10 (B), deformable mirror 101 is outstanding ring-type supporting walls (dividing plate) 103 that are provided with on a side of disc substrate 102, the fixed electorde that is made of a central electrode (the 1st electrode) 104A and two peripheral electrodes (the 2nd and the 3rd electrode) 104B, 104C is set in these ring-type supporting walls 103 area surrounded, and constitutes at the periphery that the openend of ring-type supporting walls 103 is connected and fixed catoptron main body 105.
Two peripheral electrode 104B, 104C are made of the semicircular arc battery lead plate that is configured to about 180 degree angular ranges respectively.The discoideus battery lead plate that disposes in the border circular areas of central electrode 104A by the central part that is present in above-mentioned two peripheral electrode 104B, 104C constitutes.Fixed electorde is to be formed by chromium etc., and its pattern is not limited to illustrate pattern, can adopt other various ways.Catoptron main body 105 for example applies the aluminium that is also used as movable electrode and reflection part (mirror surface) and constitutes on the lateral surface of the discoid dish that is formed by polyimide resin.
So (104A～104C) and when applying assigned voltage between the movable electrode (catoptron main body 105) utilizes its electrostatic force to control the curved shape of reflecting surface (catoptron main body 105) to the deformable mirror 101 that constitutes at the said fixing electrode.Therefore, can carry out Control of Voltage from the outside, making reflecting surface is suitable curvature.
The deformable mirror that so constitutes is configured in the optical system of camera, applies voltage, can make the curved transition of catoptron main body, adjust its focal length by control.The shape of catoptron main body is not limited to circle, also can be oval.Thereby so the deformable mirror that constitutes has following two big features: the one, compare not only small-sized but also little power consumption with existing electric motor driven lens optical system; The 2nd, in existing electric motor driven lens optical system, the noise of motor sound and transfer system is very big, and does not almost have sound in deformable mirror.
Summary of the invention
; in above-mentioned open communique; though deformable mirror itself has been proposed various schemes; but the low consumption that realizes bringing into play one of the advantage of deformable mirror electrically reaches the camera head of the low consumption electrification of device integral body, need give full play to the control of the low power consumption feature of this deformable mirror.If only the deformable mirror that is provided with for example replacing the condenser lens in the existing lens barrel carries out the control identical with existing condenser lens, then can not give full play to the deformable mirror feature.The present invention proposes in order to address the above problem, and purpose is to provide a kind of camera head and control method thereof of control of the low power consumption feature that can carry out bringing into play more fully deformable mirror.
For addressing the above problem, invention 1 is a kind of camera head, has photography and uses optical system, and subject is looked like to make a video recording, and it is characterized in that having: deformable mirror, and it has can be by applying the reflecting surface that voltage changes shape; Camera unit, the reflecting surface of this deformable mirror constitutes the part of its optical system; Voltage applying unit, it applies voltage to described deformable mirror; Shape retentive control unit, it controls described voltage applying unit, makes the reflecting surface of described deformable mirror keep definite shape.
Description of drawings
Fig. 1 is the structured flowchart of structure of digital camera of the embodiment of expression camera head of the present invention.
Fig. 2 is the summary construction diagram of the structure example of the deformable mirror drive division in the expression embodiment shown in Figure 1.
Fig. 3 represents that the fixed electorde of the deformable mirror in deformable mirror drive division shown in Figure 2 applies the mode of intermittant voltage.
Fig. 4 represents the catoptron mode of texturing of the deformable mirror when deformable mirror applies intermittant voltage.
Fig. 5 represents that when deformable mirror applied intermittant voltage, intermittant voltage applied interval T
OffAnd the relation between the catoptron of the deformable mirror distortion slippage δ.
Fig. 6 represents to be used to illustrate the part of process flow diagram of the action of embodiment shown in Figure 1.
Fig. 7 represents to be used to illustrate the remainder of process flow diagram of the action of embodiment shown in Figure 1.
Fig. 8 is the process flow diagram of the subroutine procedure that sustaining voltage applies in the expression process flow diagram shown in Figure 6.
Fig. 9 be expression when intermittently photographing the photograph processing state and apply the timing diagram of the state of voltage to deformable mirror.
Figure 10 represents the structure example of deformable mirror.
Symbol description
1: image pickup part; 2: the first groups of optical systems; 3: deformable mirror; 4: varifocal optical system; 5: the 6 groups of optical systems; 6: imaging apparatus; 7: the deformable mirror drive division; 8: the lens drive division; 9:CPU; 10: the input instruction unit; 11: imaging circuit; The 12:AE/AF circuit; 13: distance measuring sensor; 14:DRAM; 15: image processing circuit; The 16:LCD image displaying part; 17: recording medium; 18: compressed and decompressed circuit; 19: battery; 20: power circuit; 21: the battery allowance test section; 31: booster circuit; 32: driver; 33A, 33B, 33C: the 1st～the 3rd on-off element; 101: deformable mirror; 102: substrate; 103: supporting walls (dividing plate); 104A, 104B, 104C: the 1st～the 3rd electrode; 105: movable electrode (catoptron main body).
Embodiment
Below, embodiment is described.Fig. 1 is the integrally-built schematic block diagram of digital camera of having used the embodiment of camera head of the present invention.In Fig. 1, the 1st, image pickup part is by constituting with the lower part: the 1st group of optical system 2 of incident subject light; Reflect the transmitted light of the 1st group of optical system 2 and carry out the 2nd group of optical system of conduct that the focus of optical system adjusts, with the identical deformable mirror 3 of structure shown in Figure 10 (A), Figure 10 (B); By catoptrical the 3rd～5th group of varifocal optical system that optical system constitutes 4 of accepting deformable mirror 3; The 6th group of optical system 5 of the transmitted light of incident varifocal optical system 4; And with the imaging apparatuss such as CCD 6 of the 6th group of optical system 5 relative configurations.The 7th, be used to drive the deformable mirror drive division of deformable mirror 3.The 8th, be used for the lens drive division of the driving motor of drive controlling varifocal optical system 4.
In Fig. 1, the 9th, the CPU of the action of control camera various piece.The 10th, the input instruction unit, it has power switch button, mode button, zoom button, release-push, LCD image display switch button, picture quality switching push button etc.The 11st, handle from the image pickup signal of imaging apparatus 6 and generate the imaging circuit of view data.The 12nd, the AF/AE circuit, it uses view data degree of comparing AF to handle or uses distance measuring sensor 13 to carry out AF and handle, and uses view data to carry out AE and handle.The 14th, the DRAM of temporary transient storing image data.The 15th, view data is carried out the image processing circuit of various Flame Image Process.The 16th, according to the LCD image displaying part of the image of view data display reproduction.The 17th, the smart media of recording image data (smart media) etc. can be loaded and unloaded recording medium.The 18th, compressed and decompressed circuit, it is compressing Imagery Data Recording in recording medium 17 time processing, reading view data from recording medium 17 when showing, carries out decompression.The 19th, battery.The 20th, the power circuit with booster circuit or holding circuit etc.The 21st, the battery allowance test section of detection battery allowance.
The structure example of deformable mirror drive division 7 is described according to Fig. 2 below.In Fig. 2, the 31st, booster circuit, it is used for the voltage of battery 19 (for example 3.3V) is risen to the maximum voltage (for example 100V) of the fixed electorde that imposes on deformable mirror 3.The 32nd, set each fixed electorde to deformable mirror 3 (driver of the voltage of the 1st～the 3rd electrode 104A～104C) apply.In this example, it is made of three drive circuits, so that can drive the deformable mirror 3 with three fixed electordes.33A～33C is the 1st～the 3rd on-off element that is made of FET, and the one end connects the output terminal V of each drive circuit
Out1～V
Out3, the other end connects each fixed electorde 104A～104C of deformable mirror 3.Do not need booster circuit 31 when in addition, using booster circuit in the power circuit 20.
In the deformable mirror drive division 7 of this structure, according to the control voltage V that on the control terminal of each on-off element 33A～33C, applies jointly
Sw, 33A～33C carries out on to each on-off element, when connecting control, and can be with the voltage V that sets at each drive circuit
Out1～V
Out3Be applied on each fixed electorde 104A～104C, movable electrode (catoptron main body) be controlled to the curved shape of regulation.
; in the present embodiment in the electrostatic deformable mirror of the structure shown in Figure 10 of Shi Yonging (A), (B); if apply voltage to fixed electorde; then because electrostatic induction; at the opposite electric charge of movable electrode side polarization; because electrostatic force; fixed electorde and movable electrode attract each other; even but interrupt applying voltage to fixed electorde; because keep electric charge at short notice on fixed electorde and movable electrode, so movable electrode can not return to the shape (tabular) that applies before the voltage immediately.But the electric charge that is kept as time goes by leaks, and the deflection of movable electrode descends and diminishes.Therefore, if when the deflection of movable electrode descends a little, apply voltage once more, then can keep the deflection of stipulating substantially.Like this, under can the situation of not strict maintenance deformed shape, by applying intermittant voltage, compare and to reduce power consumption with applying continuous voltage, and keep the deformed shape of regulation substantially.
As shown in Figure 3, carrying out this intermittant voltage when applying, output V from each drive circuit
OutIntermittently export with pulse type, and between its period of output, by control voltage V
Sw(about 1V) connects each on-off element 33A～33C, the output V of each drive circuit
OutBe applied on each fixed electorde 104A～104C of deformable mirror 3.In Fig. 3, T
OnDuring the expression on-off element is connected (about 10msec), be during the electrode application voltage of deformable mirror.T
OffExpression on-off element off period is to stop during the electrode application voltage of deformable mirror.
Here, at the output V that exports each drive circuit
OutDuring to on-off element carry out on/off operation be because: if carry out the on/off operation of the output of the on/off operation of on-off element and each drive circuit simultaneously, then owing to before some deviations appear at on-off element and disconnect, the situation that the output of drive circuit disconnects.In this case,, therefore remain on charge discharge on the deformable mirror, can not keep the shape of stipulating by applying intermittant voltage because on-off element is an on-state and drive circuit is output as off-state.In order to stop the generation of this kind phenomenon reliably, carry out the on/off operation of on-off element by above-mentioned timing.
Carrying out under the situation that this intermittant voltage applies the state that the deflection of the movable electrode of deformable mirror (catoptron main body) and distortion descend shown in Fig. 4.If set the degree that little distortion slippage δ is does not influence actual photography, can not have problems so in actual use.But, because the distortion slippage δ value of allowing is different because of photograph mode, therefore by (intermittant voltage the applies the interval) T during the applying voltage and end of intermittant voltage that applies of corresponding different conditions is set
Off, can utilize battery efficiently, promptly can power saving.
(intermittant voltage applies at interval) T during Fig. 5 illustrates and applies voltage and end
OffRelation with distortion slippage δ.But also permissible range and preview image when the permissible range of distortion slippage δ when still image (looking in the distance and wide-angle), dynamic image (looking in the distance and wide-angle) the are shown permissible range when showing (the LCD image shows: look in the distance and wide-angle).
Table 1 is illustrated under the exercises pattern state selecting continuous voltage to apply to apply with intermittant voltage and when selecting intermittant voltage to apply, the concrete T of various zoom ratios
OffThe example of time (second).Content shown in this table 1 can be stored on the CPU9 by the form of look-up table (lookup table).
Table 1
| Zoom ratio Z | |||
| Wide-angle (1≤Z＜3) | Look in the distance (3≤Z≤6) | ||
| The preview image display mode | Battery allowance is big | 2sec | ?1sec |
| Battery allowance is little | 3 | ?2 | |
| Discharge back pattern (during the AE/AF locking) for the | 2 | ?1 | |
| Still image (single bat, continuous shooting) photograph mode | Low image quality | 0.5 | ?0.2 |
| High image quality | Continuous voltage applies | Continuous voltage applies | |
| The dynamic image photograph mode | 1.5 | ?0.7 | |
According to Fig. 6～process flow diagram shown in Figure 8, the action of the digital camera major part of embodiment shown in Figure 1 is described below.Because according to having or not the LCD image to show, action is different, therefore at first judges whether to carry out the LCD image and shows (step S1).Do not carry out the LCD image when showing, owing to observe subject, therefore do not carry out AE/AF and detect and directly enter the step (step S2) that has judged whether to carry out the 1st releasing operation by optical finder.If do not carry out releasing operation the 1st time, then wait for up to carrying out releasing operation the 1st time.
On the other hand, when carrying out the demonstration of LCD image, carry out the AE detection and carry out AF detection (step S3) based on the ranging data that obtains by distance measuring sensor 13 based on view data; According to the adjustment (step S4) that exposes of AE testing result; And according to the AF testing result being applied to (step S5) on the deformable mirror corresponding to the voltage of focal position.Then, in this case, owing to, therefore judge whether timer has passed through 1 second (step S6) to serve as 1 second to repeat AE/AF at interval to detect action.If passed through for 1 second, then then transfer to the step S2 that has judged whether to carry out the 1st releasing operation.If do not carry out releasing operation the 1st time, then repeat to detect the action of the step S3～S6 of beginning from AE/AF.
In case carried out releasing operation the 1st time, then, the same with the action shown in step S3～S5 at first in order to lock AE/AF, carry out AE/AF and detect (step S7); Adjustment (step S8) exposes; The voltage corresponding with focal position is applied to (step S9) on the deformable mirror.Then, owing to be not to carry out the 2nd time releasing operation at once sometimes after carrying out the 1st releasing operation, the timer that therefore then carries out associative mode sets that (intermittant voltage applies interval T
OffSetting) (step S10), according to the timer time that sets at interval, move on to the subroutine procedure (step S11) that applies voltage in order to keep shape.
Here, set in the step at the timer of associative mode, (intermittant voltage applies interval T at interval to set timer time in " the 1st time discharge back pattern (during the AE/AF the locking) " hurdle shown in the above-mentioned table 1
Off).That is, in 1～6 times zoom ratio scope, when zoom ratio Z was 1≤Z＜3, timer time is (T at interval
Off) be set at 2 seconds, some timer time interval (T in 3≤Z≤6
Off) be set at 1 second.
In the subroutine procedure action that applies voltage in order to keep shape, as shown in Figure 8, at first judge whether to have passed through timer time t (step S11-1) at interval.Elapsed time in the action of this subroutine procedure is meant the elapsed time that applied last time after voltage enters during the termination.If through the time t that setting, then apply voltage (step S11-2) once more, and return master routine, carry out the judgement (step S12) of the 2nd releasing operation subsequently.If do not carry out releasing operation the 2nd time, then get back to step S10, by the action of same step, apply and wait for up to carrying out releasing operation the 2nd time while carry out intermittant voltage.On the other hand, in the process determining step S11-1 of above-mentioned timer time interval t,, then directly move on to the 2nd releasing operation determining step S12 of master routine if do not pass through timer time t at interval.
In case carried out releasing operation the 2nd time, carry out the timer of associative mode so once more and set (step S13), and once more the voltage corresponding to focal position is applied on the deformable mirror, be set correct focal position (step S14).Then judge it is static pattern image or dynamic image pattern (step S15).If static pattern image then then judges it is high image quality pattern or low image quality pattern (step S16).If the high image quality pattern is so as shown in table 1 irrelevant with zoom ratio, switches to continuous voltage and apply (step S17).Begin exposure (step S18) then, wait for end exposure (step S19), finish the voltage of deformable mirror is applied (step 20), after finishing, carry out the preservation of photographs keeping records in the recording medium with writing down (step S21).Above-mentioned high image quality pattern is meant that compressibility is little compressible or does not compress processing in compression is handled; Or the whole pixels that the adopt imaging apparatus situation of photographing.
In above-mentioned judgement is among the high image quality pattern or the determining step S16 of low image quality pattern, if be set at the low image quality pattern, so directly begins exposure (step S22).Because sometimes the time shutter long, the judgement (step S23) that therefore then exposes and whether finish.If exposure finishes, transfer to the step S20 that end applies the voltage of deformable mirror so, if exposure finishes as yet, carry out so subroutine procedure be used to keep the intermittant voltage of shape of deformable mirror to apply (step S24).Here, as shown in table 1, when zoom ratio Z is the wide-angle of 1≤Z＜3,, when the looking in the distance of 3≤Z≤6, carries out intermittant voltage and apply up to end exposure with 0.2 second interval with 0.5 second interval.
Above-mentioned be among the static pattern image or the determining step S15 of dynamic image pattern, if be set at static pattern image, shown in the process flow diagram among Fig. 7, begin photography (step S25) so, at first carry out the exposure of first two field picture and record (step S26, S27).Then,, be made as per 5 frames in the present embodiment once, whether be through with the record (step 28) of 5 frame photographss owing to must set photography conditions again with every several frames interval once usually.If the record to 5 frames finishes, carry out AE/AF so once more and detect (step S29).The adjustment (step 30) that exposes as required, and, therefore whether change the judgement (step 31) of focal position owing to change focal position as required.If the change focal position then applies the voltage corresponding with the focal position of deformable mirror (step S32).
On the other hand, when not needing to change focal position, directly move on to and carry out the subroutine action (step S33) that intermittant voltage applies for the shape that keeps deformable mirror if subject does not move.Then, in this subroutine action,, judged whether to pass through the timer time interval t that sets with aforesaid identical.If through the timer time interval t that setting, in order to keep the shape of deformable mirror, applied voltage once more so.As shown in table 1, the timer time of setting in this dynamic image photography is (T at interval
Off) be 1.5 seconds when zoom ratio Z is the wide-angle of 1≤Z＜3, and when the looking in the distance of 3≤Z≤6, be 0.7 second, voltage applied off and on this interval.
Here saidly, the voltage that keeps shape is not when detecting the elapsed time that the moment apply the voltage corresponding with the change of focal position begins according to AF for applying, but do not detecting change under the voltage condition that deformable mirror applies according to AF, the moment that begins the time of the above-mentioned setting of process in the moment from this change applies voltage once more, that is to say in the moment of the moment that applied voltage since last time, apply voltage once more through the stipulated time shown in the table 1.
Then, judge whether releasing operation is decontroled (step S34) for the second time.If releasing operation is not decontroled for the second time, then turn back to step S26, repeat exposure, operation of recording.In case releasing operation is decontroled for the second time, then finishes the action of dynamic image pattern.
In above-mentioned action specification according to process flow diagram, when the LCD image shows (preview image demonstration) pattern, serving as 1 second to carry out at interval AE/AF to detect and apply voltage, but in the present embodiment, when the preview image display mode, also can change intermittant voltage and apply mode according to battery allowance.Below this mode is described.In the present embodiment, can detect battery allowance often by battery allowance test section 21.Under the preview image display mode, as shown in table 1 when battery allowance is big, when being the wide-angle of 1≤Z＜3, gets zoom ratio Z 2 seconds at interval, when the looking in the distance of 3≤Z≤6, get 1 second at interval.Carrying out intermittant voltage with the short time interval applies.When battery allowance, when being the wide-angle of 1≤Z＜3, gets zoom ratio Z 3 seconds at interval, when the looking in the distance of 3≤Z≤6, get 2 seconds at interval, the time interval that intermittant voltage is applied is set at longer.Can reduce power consumption like this, prolong battery supply life-span, and keep the shape of deformable mirror.
As the mode that applies voltage to deformable mirror, can consider that also (when using optical finder) is when photographing under the state that does not use preview image to show, in order to confirm AF action and photography action, the preview image that carries out the short time shows, only during the preview image of this short time shows, deformable mirror is applied voltage, in other times, do not apply voltage.
Timer time interval (T under the exercises pattern has been shown in table 1
Off) the setting example, these timer times can be stored in by the form of look-up table among the CPU at interval in advance, also can arbitrarily be set according to each pattern or be selected by shooting person and set.
In digital camera, carry out be called the intermittently photography of camera style different sometimes with continuous shooting, apply the mode of voltage when illustrating that according to Fig. 9 photograph this intermittence below to deformable mirror.Intermittently photography is with the interval photography T of predefined regulation
1(for example 1 minute interval) is by first two field picture, second two field picture ... order photograph off and on, when each two field picture is carried out photograph processing, at first carry out AE/AF and handle, then expose and the chronophotography image.At this moment, during AE/AF handles and between exposure period subsequently, apply voltage to the deformable mirror of the focus adjustment that is used for optical system, till from record the time, beginning to handle beginning to the AE/AF of photography next time during, the applying of interrupt voltage.Thus, can improve the effect that reduces power consumption.
The front is illustrated digital camera as embodiment.But the present invention also is applicable to built-in camera head in mobile phone etc.
More than embodiment is illustrated, will be summarized as follows as the effect that the structure of feature of the present invention and this structure are brought below.
Structure as the present invention's the 1st feature is the structure of the camera head described in the invention 1, in the camera head of this structure, owing to have shape retentive control device, by the control voltage applying unit, make the reflecting surface of deformable mirror keep definite shape, therefore the reflecting surface of deformable mirror keeps definite shape, can obtain the stable photographing image.
Structure as the present invention's the 2nd feature is the structure of the camera head described in the invention 2, in the camera head of this structure, owing to apply the shape that voltage keeps reflecting surface off and on to deformable mirror, therefore keep the shape of reflecting surface reducing power consumption.
Structure as the present invention's the 3rd feature is the structure of the camera head described in the invention 3, because when keeping the shape of deformable mirror, the subtle change of shape changes with the zoom multiplying power the influence of picture quality, therefore by controlling, make according to zoom ratio and change the application time interval that applies intermittant voltage, can reduce power consumption, and keep suitable shape corresponding to zoom ratio.
Structure as the present invention's the 4th feature is the structure of the camera head described in the invention 4, because under the situation of low zoom ratio, when keeping the shape of deformable mirror, the variation of shape is very little to the influence of picture quality, therefore the application time interval that can extend and apply intermittant voltage, thereby as mentioned above, when hanging down zoom ratio, by the lengthening application time at interval, can further suitably reduce power consumption.
Structure as the present invention's the 5th feature is the structure of the camera head described in the invention 5, in the camera head of this structure, owing to can change the application time interval that applies intermittant voltage according to photograph mode, therefore can reduce power consumption, and keep shape corresponding to the suitable deformable mirror of photograph modes such as still image, dynamic image.
Structure as the present invention's the 6th feature is the structure of the camera head described in the invention 6, in the camera head of this structure, because under the dynamic image photograph mode, even it is also very little that employing than the low low image quality of still image photograph mode requirement, influences, therefore as mentioned above, by when the Dynamic Photography pattern, the application time that applies intermittant voltage is set at length when photographing than still image at interval, can reduces power consumption, and carry out suitable dynamic image photography.
As the structure of the present invention's the 7th feature is the structure of the camera head described in the invention 7, in the camera head of this structure, can prolong the life-span of the battery that camera head has, and keep the shape of reflecting surface.
Structure as the present invention's the 8th feature is the structure of the camera head described in the invention 8, in the camera head of this structure, because condition according to camera head, selection is carried out intermittant voltage and is applied still continuous voltage and apply and control, therefore, when there is no need to carry out continuous voltage and apply, carry out intermittant voltage and apply, can suitably reduce power consumption.Here the condition of said camera head is meant photograph mode, zoom ratio, battery allowance and other conditions.
Structure as the present invention's the 9th feature is the structure of the camera head described in the invention 9, because preview image does not need strict picture quality and demonstration time long, therefore pass through in display unit, to show during the preview image as mentioned above, carrying out intermittant voltage applies and keeps shape, suitably power saving.
Structure as the present invention's the 10th feature is the structure of the camera head described in the invention 10, because dynamic image does not need strict picture quality, therefore by as mentioned above when dynamic image is photographed, carry out intermittant voltage and apply, can reduce power consumption and keep suitable shape.
Structure as the present invention's the 11st feature is the structure of the camera head described in the invention 11, in the camera head of this structure, owing to when photographing, carry out continuous voltage and apply, therefore can obtain the high image of stable picture quality with the high image quality pattern.And when continuous shooting, the time beyond between exposure period also carries out continuous voltage and applies, and makes deformable mirror keep definite shape, can make stable image quality.
Structure as the present invention's the 12nd feature is the structure of the camera head described in the invention 12, in the camera head of this structure, because when photographing with the high image quality pattern, apply from carrying out intermittant voltage during the exposure beginning after the focus lock, so under the high image quality pattern, also can power saving.
Structure as the present invention's the 13rd feature is the structure of the camera head described in the invention 13, by like this deformable mirror being used for the focal position adjustment of optical system, can reduce power consumption, and obtain stable photographed images.
Structure as the present invention's the 14th feature is the structure of the camera head described in the invention 14, utilizes electrostatic force to change the deformable mirror of reflector shape by such employing, can further reduce power consumption.
Structure as the present invention's the 15th feature is the structure of the camera head described in the invention 15, in the camera head of this structure, owing to do not apply voltage between the photography at each two field picture when intermittently photographing, therefore can improve power saving effect to deformable mirror.
Formation as the present invention's the 16th feature is the formation of the method for adjustment of the camera head described in the invention 16, in the control mode of the camera head that constitutes like this, owing to be controlled to and carry out intermittant voltage and apply, to keep the shape of deformable mirror, therefore can power saving and keep suitable reflector shape.
As above according to embodiment illustrated, according to the present invention, owing to adopt following structure: promptly have shape retentive control unit, voltage applying unit is controlled, according to the condition and the battery allowance of camera, select to carry out that continuous voltage applies or carry out intermittant voltage applies, and the application time of further selecting to apply intermittant voltage at interval, make the reflecting surface of deformable mirror keep definite shape, therefore can suitably reduce power consumption.
Claims (16)
1. a camera head has photography and uses optical system, and subject is looked like to make a video recording, and it is characterized in that having: deformable mirror, and it has can be by applying the reflecting surface that voltage changes shape; Camera unit, the reflecting surface of this deformable mirror constitutes the part of its optical system; Voltage applying unit, it applies voltage to described deformable mirror; Shape retentive control unit, it controls described voltage applying unit, makes the reflecting surface of described deformable mirror keep definite shape.
2. camera head as claimed in claim 1 is characterized in that, described voltage applying unit is controlled for the shape of the reflecting surface that keeps described deformable mirror in described shape retentive control unit, makes it apply voltage off and on to this deformable mirror.
3. camera head as claimed in claim 2 is characterized in that, the described voltage applying unit of described shape retentive control unit controls makes it according to the zoom ratio of setting in the described camera unit, changes the application time interval that described intermittant voltage applies.
4. camera head as claimed in claim 3, it is characterized in that the described voltage applying unit of described shape retentive control unit controls makes when the zoom ratio of described setting is low range, compare when being set to high magnification with zoom ratio, the application time that described intermittant voltage applies is long at interval.
5. camera head as claimed in claim 2 is characterized in that, the described voltage applying unit of described shape retentive control unit controls makes the image pickup mode according to this camera, changes the application time interval that described intermittant voltage applies.
6. camera head as claimed in claim 5, it is characterized in that the described voltage applying unit of described shape retentive control unit controls makes when the dynamic image photograph mode, compare during with the still image photograph mode, the application time that described intermittant voltage applies is long at interval.
7. camera head as claimed in claim 2, it is characterized in that, the described voltage applying unit of described shape retentive control unit controls, when making the battery allowance of the battery that has at this camera head be lower than ormal weight, compare when being higher than ormal weight, the application time that described intermittant voltage applies is long at interval.
8. camera head as claimed in claim 1 is characterized in that, described shape retentive control unit is according to the condition of this camera head, selects to make described voltage applying unit to carry out that intermittant voltage applies or carry out continuous voltage applies and control.
9. camera head as claimed in claim 8 is characterized in that, the described voltage applying unit of described shape retentive control unit controls, make its at this camera head during showing preview image on the display unit, carry out intermittant voltage and apply.
10. camera head as claimed in claim 8 is characterized in that, the described voltage applying unit of described shape retentive control unit controls makes it when this camera head carries out the dynamic image photography, carries out intermittant voltage and applies.
11., it is characterized in that the described voltage applying unit of described shape retentive control unit controls makes it when this camera head carries out the photography of high image quality pattern, carries out continuous voltage and applies as claim 8 or 10 described camera heads.
12. camera head as claimed in claim 11 is characterized in that, the described voltage applying unit of described shape retentive control unit controls applies it in the ranks to exposure begin the to advance voltage of having a rest after focus lock, carry out continuous voltage and apply between exposure period.
13., it is characterized in that described deformable mirror is used for the focal position adjustment of described camera unit as each described camera head in the claim 1～12.
14., it is characterized in that described deformable mirror can change the shape of described reflecting surface by electrostatic force as each described camera head in the claim 1～13.
15. a camera head has photography and uses optical system, and subject is looked like to make a video recording, and it is characterized in that having: deformable mirror, it has can be by applying the reflecting surface that voltage changes shape; Camera unit, the reflecting surface of this deformable mirror constitutes the part of its optical system; Voltage applying unit, it applies voltage to described deformable mirror; Control module, it controls described voltage applying unit, makes it when this camera head is in intermittently photography state, does not apply voltage to deformable mirror between each photography.
16. the control method of a camera head, this camera head has: deformable mirror, and it has can be by applying the reflecting surface that voltage changes shape; Camera unit, the reflecting surface of this deformable mirror constitutes the part of its optical system; And voltage applying unit, it applies voltage to described deformable mirror, and this control mode is characterised in that, controls described voltage applying unit and carries out intermittant voltage and apply, so that the reflective surface of described deformable mirror keeps definite shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002333101A JP2004170479A (en) | 2002-11-18 | 2002-11-18 | Imaging unit and control method therefor |
| JP333101/2002 | 2002-11-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1519608A true CN1519608A (en) | 2004-08-11 |
| CN100349032C CN100349032C (en) | 2007-11-14 |
Family
ID=32697904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101038722A Expired - Fee Related CN100349032C (en) | 2002-11-18 | 2003-11-18 | Camera head and its control method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004170479A (en) |
| CN (1) | CN100349032C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895686B (en) * | 2005-01-31 | 2012-07-04 | 卡西欧计算机株式会社 | Image pickup device and image pickup method |
| CN101874219B (en) * | 2007-11-27 | 2012-09-05 | 伊斯曼柯达公司 | Dual focal length lens system |
| CN106462036A (en) * | 2014-06-20 | 2017-02-22 | 高通股份有限公司 | Multi-camera system using folded optics free from parallax artifacts |
| US10165183B2 (en) | 2012-10-19 | 2018-12-25 | Qualcomm Incorporated | Multi-camera system using folded optics |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5031205B2 (en) * | 2005-07-13 | 2012-09-19 | 京セラ株式会社 | Mobile phone, photographing method and photographing program |
| JP4803375B2 (en) * | 2006-09-15 | 2011-10-26 | カシオ計算機株式会社 | Imaging apparatus and program thereof |
| JP5093376B2 (en) * | 2011-03-25 | 2012-12-12 | カシオ計算機株式会社 | Imaging apparatus and program thereof |
| WO2014166048A1 (en) * | 2013-04-09 | 2014-10-16 | 上海海鸥数码照相机有限公司 | Variable-focus shooting module of mobile phone, and variable-focus mobile phone |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5379157A (en) * | 1993-12-02 | 1995-01-03 | Hughes Aircraft Company | Compact, folded wide-angle large reflective unobscured optical system |
| JPH07294798A (en) * | 1994-04-26 | 1995-11-10 | Victor Co Of Japan Ltd | Method for adjusting curved mirror by utilizing mirror finished surface film |
| JP4311782B2 (en) * | 1998-03-05 | 2009-08-12 | オリンパス株式会社 | Optical device |
| JP2002122784A (en) * | 2000-08-08 | 2002-04-26 | Olympus Optical Co Ltd | Optical device |
-
2002
- 2002-11-18 JP JP2002333101A patent/JP2004170479A/en not_active Withdrawn
-
2003
- 2003-11-18 CN CNB2003101038722A patent/CN100349032C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895686B (en) * | 2005-01-31 | 2012-07-04 | 卡西欧计算机株式会社 | Image pickup device and image pickup method |
| CN101874219B (en) * | 2007-11-27 | 2012-09-05 | 伊斯曼柯达公司 | Dual focal length lens system |
| US10165183B2 (en) | 2012-10-19 | 2018-12-25 | Qualcomm Incorporated | Multi-camera system using folded optics |
| CN106462036A (en) * | 2014-06-20 | 2017-02-22 | 高通股份有限公司 | Multi-camera system using folded optics free from parallax artifacts |
| CN106462036B (en) * | 2014-06-20 | 2019-11-12 | 高通股份有限公司 | Use the multicamera system of the folded-optics device of no parallax artifact |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004170479A (en) | 2004-06-17 |
| CN100349032C (en) | 2007-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20050195285A1 (en) | Electronic still camera and method of image acquisition of electronic still camera | |
| JP4887275B2 (en) | Imaging apparatus and shutter drive mode selection method thereof | |
| KR20110131104A (en) | Interchangeable lens, imaging apparatus, imaging system, method of controlling interchangeable lens, and program | |
| CN1652009A (en) | Imaging apparatus | |
| CN101063791A (en) | Camera capable of displaying live view | |
| CN1519608A (en) | Camera head and its control method | |
| JP2000041186A (en) | Digital camera and control method therefor | |
| CN1848921A (en) | Image pickup device | |
| CN1637454A (en) | Lens barrel unit | |
| US6862106B1 (en) | Image-capturing apparatus, method of controlling the same apparatus, and computer program product for providing the same method | |
| JP3720766B2 (en) | Focus adjustment apparatus, imaging apparatus, focus adjustment method, control program for focus adjustment apparatus, and storage medium | |
| JP2003101853A (en) | Digital camera | |
| CN1304871C (en) | Pick-up device and its control method | |
| US6917460B2 (en) | Imaging apparatus and controlling method thereof | |
| JP2754455B2 (en) | Focus detection device | |
| CN1893560A (en) | Electronic equipment and menu display method | |
| JP2000231149A (en) | Camera | |
| JP4050063B2 (en) | Imaging device | |
| JP2003069891A (en) | Electronic still camera | |
| JP2001128071A (en) | Digital camera | |
| JP2010109578A (en) | Imaging apparatus and liquid crystal display | |
| JP2003043443A (en) | Image display device and image printing device | |
| JP4434421B2 (en) | IC device for imaging device | |
| JP2004179852A (en) | Digital camera | |
| JP2877671B2 (en) | Solid-state imaging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20101118 |