JPH03200229A - Camera apparatus - Google Patents

Abstract

PURPOSE:To accomplish photographing without the blurring of an object by repetitively detecting the deviation of an object image which is formed on the exposed surface of a film at a high speed in an exposing period on the film and displacing optical positional relation between a photographing optical lens and the exposed surface of the film with respect to the object in accordance with the detected deviation so that the deviation of the object image may be corrected. CONSTITUTION:A part of the object image formed on the exposed surface of the film 2 through the photographing optical lens 1 is repetitively picked up over plural times in the exposing period of the object image on the film by using an image pickup element 14 which is driven at a high speed. The deviation of the object image formed on the exposed surface of the film 2 is successively detected in order by obtaining correlation between the object images read out from the image pickup element 14 and the optical positional relation between the photographing optical lens 1 and the exposed surface of the film 2 with respect to the object is displaced so as to correct the deviation. Thus, the object image formed on the exposed surface of the film 2 without the deviation is obtained over the exposing period of the object image and then the camera shake is effectively prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a camera device having a function of preventing camera shake during long exposure.

[Prior Art] When exposing a subject image to film using a camera device, that is, when photographing with a camera, there is a problem of misalignment of the subject image formed on the film surface, so-called hand shake (camera shake).

Especially when performing long exposure, super telephoto shooting, or macro photography, the above-mentioned camera shake becomes a big problem.

Conventionally, in order to prevent such camera shake and take pictures with high clarity (resolution), cameras were fixed exclusively on a tripod, or
An auxiliary light source such as a strobe is used in conjunction with the camera in order to perform short-time exposure such that the problem of camera shake can be virtually ignored. However, the combined use of such auxiliary means is generally very cumbersome, and there is a problem in that the handling and maneuverability of the camera are significantly impaired.

[Problem to be Solved by the Invention] As described above, in the past, in order to prevent camera shake, it was necessary to use an auxiliary means such as a tripod, which was a very troublesome problem.

The present invention has been made in consideration of the above circumstances, and its purpose is to provide a camera device that can effectively prevent so-called camera shake by correcting image shift during exposure of a subject image. Our goal is to provide the following.

[Means for Solving the Problems] A camera device according to the present invention includes an image sensor that electronically captures a part of a subject image formed on a film exposure surface through a photographic optical lens, detecting the deviation of the subject image formed on the film exposure surface by driving the subject image at high speed and determining the correlation between the subject images that are repeatedly read out over a plurality of times within the film exposure period of the subject image; An image is formed on the film exposure surface by displacing the optical positional relationship between the photographing optical lens and the film exposure surface with respect to the subject according to the deviation, for example, by displacing the photographing optical lens in a direction perpendicular to its optical axis. It is characterized by incorporating an anti-shake function that corrects deviations in the subject image.

In addition, electronic imaging of a part of the subject image using an image sensor,
The accuracy of displacement detection is improved by performing this through an enlarging optical system.Furthermore, for the detection of displacement of the subject image, for example, the subject image signal that is first captured by the image sensor at the start of film exposure of the subject image is stored in memory. However, the present invention is characterized in that it is performed with high precision by a two-dimensional correlation calculation between the subject image signal stored in the memory and the subject image signal sequentially captured during the film exposure period of the subject image.

[Function] According to the present invention, a plurality of parts of the subject image formed on the film exposure surface through the photographing optical lens are captured within the film exposure period of the subject image using a high-speed driven image sensor. The camera repeatedly captures images over multiple times, finds the correlation between the subject images read out from the second image pickup element, and corrects the shift while sequentially detecting the shift of the subject image formed on the film exposure surface. Since the optical positional relationship between the photographing optical lens and the film exposure surface with respect to the subject is displaced,
The subject image formed on the exposure surface of the film is made consistent throughout the exposure period, making it possible to effectively prevent hand shake (camera shake).

[Embodiments] Hereinafter, embodiments of the camera device according to the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment in which the present invention is applied to a single-lens reflex camera, in which 1 is a photographic optical lens, and 2 is a film for exposing a subject image formed by this photographic optical lens 1. This is the exposed side of the film. The photographing optical lens 1 is driven for focusing by a distance measuring system 3 in order to form a subject image on a film exposure surface 2. Further, an aperture diaphragm mechanism built into the photographic optical lens 1 and a shutter mechanism (not shown) are driven under the control of the photometry system 4 so that the exposure amount of the subject image on the film on the film exposure surface 2 is made constant. Ru.

The main mirror 5 provided in front of the film exposure surface 2 guides the subject image guided through the photographing optical lens 1 to the viewfinder system via the forcing screen 6 and the pentaprism 7. When exposing the subject image to the film, it is moved to a position out of the optical path.

The distance measuring system 3 inputs a part of the subject image via the sub-mirror 8 incorporated in the main mirror 5, and performs focus judgment by detecting the phase difference of the subject image, for example, and performs focusing on the imaging optical lens l. Take control. Further, the photometry system 4 directly measures the amount of subject light reflected by the film exposure surface 2, and controls the film exposure amount. These ill distance system 3 and photometry system 4 are realized using various conventionally proposed methods, and their functions will not be explained here because they are not directly related to the gist of the present invention. Omitted.

Here, the feature of this embodiment device (camera device) is that the photographing optical lens l is supported movably in a plane orthogonal to the optical axis of the device main body 9 via an actuator 10. The actuator IO is driven by the camera shake prevention circuit 11 to move the photographing optical lens 1, thereby changing the optical positional relationship between the photographing optical lens 1 and the film exposure surface 2 with respect to the subject. be. However, the camera shake prevention circuit 11 is
A part of the subject image formed on the film exposure surface 2 through the photographing optical lens 1 is detected, for example, via a half mirror 12, and a shift in the subject image formed on the film exposure surface 2 is detected. The actuator 1O is driven by the above-mentioned actuator 10, and specifically, it is configured as shown in FIG. 2, for example.

That is, the camera shake prevention circuit 1 is connected to the camera shake prevention circuit 1 via the half mirror 12.
A part of the subject image introduced into the magnifying optical lens 13
The image is magnified through the image pickup device 14, and is imaged on the imaging surface of the solid-state image sensor 14, which has high sensitivity and high speed operation. The solid-state image sensor 14 is made of, for example, an AMI (amplified MOS imager), and has a function of exposing a subject image in a short time compared to the exposure time of the subject image using the film and reading out the image signal at high speed. We are prepared. An image sensor driving circuit (not shown) drives the solid-state image sensor 14 at high speed during the film exposure period of the subject image in synchronization with the shirt release operation, and repeatedly reads out the subject image.

The subject image signal repeatedly read out at high speed by the solid-state image sensor 14 passes through the video processor 15 and then sequentially passes through the A/D converter 16, where it is digitally encoded and captured. The frame memory 17 stores the first frame of the subject image signal captured in this way in synchronization with the above-mentioned shirt release operation, and stores this in synchronization with the subject image signal captured from the second frame onward. It is used as a reference image signal.

The two-dimensional F11 correlation circuit 18 executes a two-dimensional correlation calculation between the subject image signal of the first frame stored in the frame memory 17 and each subject image signal captured from the second frame onward, and calculates the image signals ( (frame images) are detected as an X displacement and an X displacement, respectively. This two-dimensional correlation calculation is performed using various calculation algorithms that have been proposed in the past.Basically, each projection component in the X direction and the y direction of two frame images is compared with each other, This is done by finding the amount of deviation as a displacement in each of the above directions.

In this way, each time the subject image signal is repeatedly read out from the solid-state image sensor 14 at a high speed, the X displacement and the series of X displacement information obtained by the two-dimensional correlation circuit 18 are transmitted via the interpolation circuits 19a and 19b. interpolated,
Each of the actuator drive units 20a and 20b is provided with the same power. And these actuator drive parts 20a, 2
0b, the X-direction actuator 10g and the Y-direction actuator 10b constituting the actuator IO are respectively driven, and the imaging optical lens 1 is displaced in a direction that corrects the displacement of the subject image in the X-direction and the y-direction. .

That is, the drive system of the actuator 10 in the camera shake prevention circuit 11 is configured to form a negative feedback loop with respect to the deviation of the subject image.

The camera shake prevention circuit 11 operates at high speed as shown in FIG. 3 in synchronization with the shirt release operation, and repeatedly captures and inputs the subject image using the solid-state image sensor 14 during the film exposure period, which is the shutter release period. . Then, the amount of deviation is detected by a two-dimensional correlation calculation between the subject image signal repeatedly captured at high speed by the solid-state image sensor 14 and the subject image signal of the first frame immediately after the shirt release stored in the frame memory 17. , the actuator 10 is driven in accordance with the detected amount of deviation to displace the photographing optical lens 1 in a direction perpendicular to its optical axis. As a result, when a shift occurs in the subject image formed on the film exposure surface 2 via the photographic optical lens 1, the photographic optical lens 1
The displacement of the subject image on the film exposure surface 2 is corrected.

The solid-state imaging probe 14 may be, for example, [
, 8 x 8] pixels or [16 x 16] pixels, and the repeated readout period of the image signal is 1.
It is designed to be performed at a high speed of about 0 μSee. As a result, even if the shutter speed is relatively high and the film exposure time is as short as about 250 μSee, many object image signals are repeatedly obtained by the solid-state image sensor 14 within the film exposure period, and the above-mentioned actuator IO is driven. The displacement control of the photographing optical lens l is performed at high speed and with good responsiveness, thereby effectively correcting the deviation of the subject image on the film exposure surface 2.

Furthermore, by enlarging the subject image through the magnifying optical lens 13 and focusing it on the solid-state image sensor 14, a sufficiently high resolution can be achieved even when the number of pixels constituting the solid-state image sensor 14 is small as described above. The device is configured to be able to detect the amount of deviation. The magnification of the magnifying optical lens 13 may be determined depending on the resolution (pixel density) of the solid-state image sensor 14 and the resolution of the film.

In this way, by increasing the resolution for detecting the amount of deviation and speeding up the operation of detecting the amount of deviation, the displacement of the photographing optical lens 1 can be controlled at high speed in response to the deviation of the subject image on the film exposure surface 2 due to so-called camera shake. This is carried out with good followability, the shift of the subject image on the film exposure surface 2 is effectively corrected, and so-called blur-free and high-resolution realum exposure (photography) of the subject is performed.

By the way, in the above-mentioned embodiment, a part of the subject image formed on the film exposure surface 2 through the photographing optical lens 1 is divided into spectra using the half mirror 12, and this is divided into spectra by the solid-state image sensor 14.
However, the use of the half mirror 12 has problems such as a decrease in the amount of light of the subject image formed on the film exposure surface 2 and a complicated optical system. Therefore, in order to solve this problem, for example, as shown in FIG. 4, a solid-state image sensor 14 for detecting deviation is provided at a position outside the photographing area of the film exposure surface 2.
Accordingly, the half mirror 12 may be omitted.

That is, the image circle A of the photographic optical lens 1 is set to be larger and circular than the photographing area B of the film exposure surface 2, as shown in FIG.
The object image is also formed in the peripheral area. In other words, the exposure (photographing) of the subject image with the film is performed using the photographing optical lens 1 in the above-mentioned image circle A.
The image of the subject is formed into a circular shape within the range of 100° and is masked to match the size of the film.

Therefore, the image of the subject is also focused on the periphery of the film surface (photographing area). In order to detect the shift using such a subject image outside the photographing area, as shown in FIGS. A solid-state image sensor 14 is provided at the lower position, and the solid-state image sensor 14 is used to repeatedly obtain object image signals at high speed during the film exposure period as described above.

In this way, the structure can be simplified due to the absence of the half mirror 12, and the problem of a decrease in the amount of light of the subject image reaching the film exposure surface 2 can be solved.

By the way, in the above-described embodiment, the X-direction and the X-direction deviation of the subject image were determined by two-dimensional correlation calculation from the subject image signal repeatedly determined at high speed by the solid-state image sensor 14. It can also be realized by different one-dimensional correlation calculations.

FIG. 6 is a diagram showing a schematic configuration of the main parts of the embodiment apparatus configured as described above. In this embodiment device, the subject image guided through the magnifying optical lens 13 is split using one half mirror 12a, and a solid-state image sensor 14a for detecting the amount of deviation in the X direction and a solid state image sensor 14a for detecting the amount of deviation in the X direction are used. Image sensor 14
Each of the subject images is captured and input using .b.

As these solid-state image sensors 14a and 14b, for example, as shown in FIG. 7, those having a structure in which photoelectric conversion parts of the captured image are arranged one-dimensionally in the X direction and in the X direction, respectively, are used. Solid-state image sensor 14 for detecting the amount of deviation in the X direction
In a, a one-dimensional signal in the X direction is obtained by cumulatively adding the pixel signals of the object image formed therein in the X direction, and the solid-state image sensor 14b for detecting the amount of deviation in the X direction It is configured to obtain a one-dimensional signal in the X direction by cumulatively adding pixel signals of the subject image obtained in the X direction. In other words, the projection components in the X direction and in the The components are read out as X-direction and one-dimensional image signal components in the X-direction.

In this way, the one-dimensional image signal components in the X direction and in the
After the predetermined signal processing is performed, the A/D converter lea,
11311, respectively, to digital conversion.

In this way, the line memories 17a and 17b store the first frame of the one-dimensionally compressed subject image signal component (one-dimensional projected component of the subject image signal) obtained from the solid-state imaging probes 14a and 14b, respectively. It is stored in synchronization with the above-mentioned shirt release operation, and is used as a base ifl image signal for detecting a deviation from the subject image signal component captured from the second frame onwards. The one-dimensional correlation circuits 18a and 18b are connected to each of the above-mentioned line memories 17a and 17.
A one-dimensional correlation calculation is performed between the subject image signal component of the first frame stored in b and each subject image signal component captured from the second frame onwards, and the correlation between these image signals (frame images) is calculated. The amount of deviation in the X direction and in the X direction is detected.

In this way, the deviation amounts in the X direction and the l
are displaced in the X direction and the X direction, respectively.

That is, in this embodiment, by using the solid-state image sensors 14a and 14b as shown in FIG. 7, the projected components in the X direction and in the Each is directly required. In this way, each solid-state imaging cord 14a, 1
Since a one-dimensional signal is obtained as a projected component of the subject image from 4b, line memories 17a and 17b are used here as memories for storing signals serving as a reference for detecting deviations in the X direction and in the X direction. , the amount of deviation can be easily detected using only one-dimensional correlation calculation,
Moreover, it is designed to be carried out at high speed.

To explain in a little more detail the signals obtained from the solid-state image sensors 14a and 14b, assuming that the subject image fl is imaged on the solid-state image sensors 14a and 14b as shown in FIG. is a one-dimensional projected component g obtained by projecting the image signal in the X direction and the X direction, respectively.1. You will get h1.

Such a projection component g1. hl is line memory 17a.

17b, the subject images are stored in f2.
If there is a shift as shown in , the one-dimensional projected components obtained from each of the solid-state image sensors 14a and 14b at that time are g2. It becomes as shown in h2. In other words, the projected component g2.
h2 will be shifted in the X direction and the X direction, respectively.

When the correlation of the projected components in each of these directions is calculated, the correlation calculation output value, for example, the sum of squares of the differences, is the 9th
As shown in Figures (a) and (b), the positions dx and dy that minimize the output are determined as the X direction and the amount of deviation in the X direction, respectively. In this way, the amount of deviation can be detected easily and quickly by one-dimensional correlation calculation.

According to the embodiment device configured in this way, it is possible to perform image calculation processing for detecting deviation one-dimensionally, and therefore, it is possible to greatly simplify the calculation circuit. .

In each of the above-described embodiments, dedicated solid-state image sensors 14, 14a and 14b are incorporated to detect the amount of deviation of the subject image. It is also possible to use the optical element (image sensor) as the solid-state image sensor 14 for detecting the amount of deviation of the subject image.

FIG. 10 shows an example of the installation of a photometric optical element (imaging element) 21 in the photometric system 4. It is installed in the exposure chamber (mirror chamber) of the camera body (apparatus body) 9 so as to receive light through the camera body (device body) 22. However, as shown in FIG. 11, for example, the imaging surface of the optical element (image sensor) 21 is divided into two areas R, left and right, with the optical center (optical axis) M as the center. The amount of deviation of the object is detected independently for each region.

Specifically, the deviation between the subject image signals repeatedly obtained from each of the regions LR and R is calculated by the above-mentioned correlation calculation using the center position of each region LR as a reference, and the deviation of the subject in the region is calculated. Quantities dx, , dy1. and the amount of deviation of the subject in the region R, dxR, dyt+, respectively. Here, the vector of the deviation of the subject in the area R, indicated by the deviation QdXt,d)/l, is fLs, and the vector of the deviation of the subject in the area R, indicated by the amount of deviation d If fR, these deviation vectors fL and fR are the sum of the rotational movement vector components RL and RR of the angle θ around the optical axis M and the translational movement vector component S, that is, fl as shown in FIG. =RL+S, fq-RR+S.

The rotational movement vector components RL and RR are caused by the tilt of the camera accompanying the shirt release operation, etc. However, since the amount of deviation in each of the regions and R obtained in this way is basically symmetrical about the optical axis M, the difference between the rotation vector components RL and RR is RL+RR-.

A relationship is established. As a result, as is clear from the vector diagram schematically shown in FIG. 12, the vector of the deviation of the entire subject image is: parallel displacement; 5-(ft + fR) /2 rotational displacement; RL-(ft- f++)/2. As a result, by decomposing the above-mentioned parallel movement QS into the X direction and the It becomes possible.

In this case, since the amount of rotational deviation of the subject image is also determined, for example, correction for this rotational deviation is also performed.
It is also possible to perform deviation correction for the subject image with higher precision.

Next, another embodiment of the present invention will be described in which this rotational deviation correction is also performed. What should be noted here is that the rotational shift of the subject image is detected as described above, and based on this, the photographing optical lens l is moved along its optical axis M.
Even if the lens is rotated around , there will be no change in the subject image formed on the film exposure surface 2 through the photographic optical lens 1. Therefore, in order to correct the rotational deviation of the subject image, a [)□ve prism 31 is incorporated into the photographing optical system as shown in FIG.
The optical axis layer is rotationally displaced to correct the rotational deviation.

As illustrated in FIG. 14, this Dove prism 31 has the property of inverting and outputting the optical image incident on its prism surface, so by rotating and displacing it around its optical axis M, the output optical image can be changed. It exhibits the effect of tilting by the amount of rotational displacement. Therefore, by rotationally displacing the Dove prism 31 in accordance with the amount of rotational deviation, it becomes possible to optically correct the rotational deviation.

However, when this Dove prism 31 is incorporated into an imaging optical system, it is undeniable that the subject image formed on the film exposure surface becomes a so-called mirror-reflected inverted image. Therefore, in practice, it is sufficient to insert yet another Dove prism into the optical system or use a mirror to return the subject image formed on the exposed surface of the film to an erect image.

Furthermore, by printing the film upside down, it is also possible to turn the above-mentioned fallen image back into an upright image.

An embodiment of the apparatus which also makes corrections for rotational deviations is constructed as shown in FIG. 13, for example.

That is, in this embodiment, a subject image signal detected using an optical element (imaging element) 21 as shown in FIG. Convert and import the signal to 71111
The signals are applied to the optical system 4 and extracted as the above-mentioned area and R signals via the area switch 32. In each of these areas, the first frame of the R image signal is stored in frame memories 17L, 171? Store each in
Thereafter, the optical element (imaging element) is repeatedly exposed at high speed.
Two-dimensional correlation circuits 18L and 18R perform a correlation calculation between each of the areas read from 21 and the H signal. By the correlation calculation in these two-dimensional correlation circuits 18L and 18R, the deviation amount fL (dxL,
dyL).

fR (dxR, dYR) will be calculated respectively.

Therefore, as described above, each of the above-mentioned deviations of 1flft (dXt+dyL) is obtained from the subject image signal of each area and H, which is repeatedly obtained at high speed.

interpolation circuit 19Lx for the series of fll (dxR, dyR)
.

After each interpolation process is performed via 19Ly, 19Rx, and 19Ry, the information on these shifted melons is sent to the subtractor 33.
a, 33b and adders 33c, 33d, and calculate the amount of rotational deviation and the amount of translational deviation, respectively.

Specifically, the subtracters 33a and 33b calculate dxl - dxl and doL dYR, respectively, and the rotation amount detector 34 calculates the rotational deviation m1.
Find Rtl. However, here, RL is a vector quantity and rotational deviation 2 is a scalar 12, so IRLI is determined.

Then, the θ actuator 35 is driven in accordance with this rotational deviation ff1lRLl, and the front 2-Dove prism 31 is rotationally displaced along its optical axis to correct the rotational deviation.

On the other hand, adders 33c and 33d calculate dx from each of the deviation amounts.
By determining L+dxR, dyL+d)/R, the parallel movement amount components are determined in the X direction and the y direction, respectively. To be precise, here, a value twice the true translation amount component is output.

Then, using these signals, the xy actuator driving section 20 is actuated to drive the xy actuator 10 described above to displace the photographing optical lens 1 in the X direction and the y direction, thereby correcting the translational shift of the subject image. .

In this way, by incorporating means for correcting the deviation of the subject image, not only the deviation in the x and y force directions of the subject image formed on the film exposure surface 2 but also the rotational deviation thereof can be effectively corrected, and so-called image blur can be effectively corrected. This makes it possible to take high-resolution images.

By the way, in the embodiment described above, the rotational deviation is corrected using the Dove prism 31, and the photographing optical lens l is
Although the translational deviation was optically corrected by displacement in the force direction, it is also possible to correct the rotational and translational deviations by using a fiber bundle and rotating and moving it in parallel. It is also possible to correct the deviation by moving and displacing the film exposure surface 2 itself.

In this case, for example, as shown in FIG. 15, the entire imaging system up to the film exposure surface 2, including the photographic optical lens 1, is assembled into an internal housing 41, and this is inserted into an outer frame housing 42, which is the main body 9 of the camera device. On the other hand, a voice coil 43 is used to support it in a movable manner.

Then, the voice coil 43 may be driven in accordance with the amount of deviation of the subject image to displace the optical positional relationship of the entire imaging system with respect to the subject, thereby correcting the amount of deviation as a whole.

Alternatively, as shown in FIG. 16, the film exposure surface 2 body containing the film is assembled into the internal housing 44, and this is moved relative to the outer frame housing 42, which is the camera device main body 9, using the voice coil 43. Support freely. The voice coil 43 may be driven in accordance with the amount of deviation of the subject image to displace the optical positional relationship of the film exposure surface 2 with respect to the subject, thereby correcting the amount of deviation. In this case, the photographic optical lens l will be incorporated into the outer frame housing 42, which is the camera device main body 9.

That is, in the example shown in FIGS. 15 and 16, at least the film storage section 45 forming the film exposure surface 2 is
As shown in FIG. 17, the (inner casing 44) is movably supported via four voice coils 43 symmetrically from four directions up, down, left and right with respect to the outer frame casing 42 shown by dotted lines. This is achieved by doubling the body structure.

Therefore, the support of the inner housing 44 to the outer frame housing 42 by the four voice coils 43 is, for example, as shown in FIG. It is set towards. That is, the internal casing 44 includes the voice coils 43uL and 43UR in the upper two locations.
The direction of support is toward a support point Q set below the optical axis M, and the voice coil 43 at two locations at the bottom
The internal housing 44 is supported by DL and 43DR toward a support point P set above the optical axis M.

In addition, each of the above voice coils 43uL, 43UR, 43DL
, 43DR are attached to the outer frame casing 42 via rotation joints 46, and the inner casing 4
4 is devised so that the telescopic axis of the voice coil 43 is not twisted due to the displacement of the voice coil 43.

According to the 2ffit one-body structure assembled in this way, for example, the two voice coils 43UL on the left side.

43D+, and the two voice coils on the right side 43U.
I? .

When 43 D li is contracted, a rightward movement vector is generated as shown in FIG. 19(a), and the inner casing 44 is displaced to the right with respect to the outer frame casing 42. Also, these voice coils 43UL, 43UI? ,43DL,
If the expansion/contraction relationship of 43DR is reversed, a leftward movement vector will occur, and the internal housing 44 will be displaced to the left with respect to the outer frame housing 42.

Furthermore, if the upper two voice coils 43UL and 43LIR are contracted and the lower two voice coils 43DL and 43DR are expanded, an upward movement vector is generated as shown in FIG. As a result, the internal casing 44 is displaced upward. Furthermore, if the expansion/contraction relationship of these voice coils 43UL, 43LIR, 43DL, and 43DR is reversed, a downward movement vector will occur, and the internal housing 44 will be displaced downward with respect to the outer frame housing 42. .

In this way, the voice coils 43UL, 43UR, 43DL, 43DI? By expanding and contracting in a complementary manner, the internal housing 44 is displaced vertically or horizontally with respect to the outer frame housing 42. Also, these voice coils 43UL, 43UR, 43
DL.

By adjusting the amount of expansion and contraction of 43DR, the internal casing 44 is displaced diagonally with respect to the outer frame casing 42 as a combination of vertical and horizontal displacements.

On the other hand, voice coils 43UR form a pair diagonally.

When each of the 43DLs is extended, the vectors in the extension direction, as shown in FIG. A torsional vector is generated.

As a result, the internal housing 44 is rotated clockwise about the optical axis M with respect to the outer frame housing 42 . Conversely, when the other voice coils 43UL and 43DR are expanded, a torsion vector in the opposite direction is generated centering on the optical axis M, as shown in FIG. 19(d), and the inner housing 44 This results in rotational displacement of the housing 42 in a counterclockwise direction about the optical axis M.

At this time, the voice coil that has not been subjected to the rotational displacement of the internal housing 44 will be displaced in accordance with the rotational displacement.

In this way, voice coils 43UL, 43υR, 43
DL.

By applying a rotational displacement to the internal housing 44 by selectively extending and driving the 43DR, rotational deviation of the subject image on the film exposure surface 2 is corrected. By combining this with the above-mentioned translational displacement control, it becomes possible to effectively correct the rotational deviation and translational deviation of the subject image.

In addition, in this way, the inner case 44 is separated from the outer frame case 42.
When correcting the deviation of the subject image on the film exposure surface 2 by adopting a configuration in which the displacement of the internal housing 44 is controlled, the photographic optical lens 1 is also internally supported, as shown in FIG. When it is incorporated into the housing 44, for example, if the amount of displacement on the side of the photographing optical lens l and the amount of displacement on the side of the film exposure surface 2 are independently controlled, the optical axis M of the photographing optical system itself can be controlled independently. It becomes possible to tilt the

Therefore, if such a displacement control method is adopted, it is possible not only to correct vertical and horizontal deviations and rotational deviations of the subject image with respect to the optical axis M described above, but also to effectively correct deviations for yawing and pitching. becomes possible.

Another advantage of this embodiment is that camera shake itself is less likely to occur. In other words, when the relative positional relationship between the outer frame casing and the inner casing changes, a back electromotive force is generated in the voice coil, and a force acts to suppress variations caused by camera shake. At this time, if the weight of the inner casing is greater than the weight of the outer frame, a larger inertial force acts on the inner casing than on the outer casing, so the outer casing is forced to move according to the law of conservation of motion. A force is applied that causes the frame housing to return to its original position. As a result,
Camera shake is effectively suppressed.

Furthermore, since the arrangement of the voice coil 43 described above corresponds to all movements such as up and down, left and right, rotation, yawing and pitching, it is possible to suppress any type of camera shake.

It should be noted that the present invention is not limited to each of the embodiments described above. For example, as a method for detecting a shift in a subject image and a method for correcting the shift, the methods shown in each embodiment may be appropriately combined. In addition, when the photographic lens is configured to be detachable, it is possible to incorporate a function for displacing the photographic optical lens l into the photographic lens side, but it is also possible to incorporate it into the lens mount section on the body side. It is possible. Further, the solid-state imaging probe 14 for detecting the shift of the subject image may be individually incorporated into the photographic lens side, but it is of course also possible to provide it fixedly on the body side.

In addition, when adopting the two-sided body structure shown in FIG. Of course, they can be connected by. In addition, the present invention can be implemented with various modifications without departing from the gist thereof.

[Effects of the Invention] As explained above, according to the present invention, the shift of the subject image formed on the film exposure surface is repeatedly detected at high speed within the film exposure period, and the shift is detected according to the detected shift amount. Since the optical positional relationship between the photographing optical lens and the film exposure surface with respect to the subject is changed to correct the deviation of the subject image formed on the film exposure surface, the image on the exposure surface is The imaging position of the subject image can be made constant. As a result, great practical effects can be achieved, such as being able to easily and effectively perform high-resolution photography without subject blur.

[Brief explanation of drawings]

The figures show a camera device according to an embodiment of the present invention, and FIG. 1 is an overall configuration diagram of the device showing an embodiment of ml, and FIG. 2 is a camera shake prevention circuit and its surrounding parts in the first embodiment of the device. FIG. 3 is a diagram showing the image detection timing for detecting a shift with respect to the shirt release, and FIG.
The figure is an overall configuration diagram showing the second actual knockdown device, and Figure 5 is the second
Figure 6 is a diagram showing the relationship between the photographing range on the film exposure surface and the mounting position of the solid-state image sensor in this embodiment.
7 is a diagram showing an example of the configuration of the solid-state image sensor used in the third embodiment device, and FIG. 8 is shown in FIG. 7. Diagram 9 showing signals obtained from a solid-state image sensor
The figure is a diagram for explaining the amount of deviation obtained from signal correlation. Further, FIG. 10 is a diagram showing an example in which an optical element for photometry and a solid-state imaging device for detecting the amount of deviation are used together, FIG. 11 is a diagram showing a modification of the solid-state imaging device used for detecting the amount of deviation, and FIG.
The figure is a diagram for explaining the principle of deviation amount detection using the solid-state image sensor shown in Fig. 11, and Fig. 13 is a schematic diagram of the main part of an embodiment device incorporating an optical correction function for rotational deviation. FIG. 14 is a diagram showing the action of the Brism used in the embodiment shown in FIG. Figure 17 is a schematic diagram showing the housing structure of the embodiment device shown in Figure 16, Figure 18 is a diagram showing the support structure of the inner frame housing in the double housing structure, and Figure 19 is a diagram showing the support structure of the inner frame housing. FIG. 3 is a diagram schematically showing a form of displacement. l...Photographing optical lens, 2...Film exposure surface, 3
...Al distance system, 4...Photometry system, 5...Main mirror 8...Sub mirror 9...Device body (camera body), lO...Actuator, fOa...X direction actuator, 10b...X direction actuator,
11... Camera shake prevention circuit, 12.12b... Half mirror 13... Magnifying optical lens, 14.14a, L
4b--solid-state image sensor (AMI) 15.15a, 15
b-...Video processor, 113.18a, 16b-
A/D converter, 17.17L, 17R...Frame memory, 17a, 17b...Line memory, 18,1
8L, 18R - two-dimensional correlation circuit, 19a, 19b,
19LX, 19Ly, 19RX, 19Ry - interpolation circuit, 20. 20a, 20b... actuator drive unit, 21... solid-state image sensor (IlIII light optical element), 22... imaging lens, 31... Dove prism, 32...Area switching device, 33a, 33b=subtractor, 33c, 33d-adder, 34-...rotation amount detection circuit, 35...θ actuator, 4■...internal casing , 42...Outer frame housing, 43.43UL, 43tlR, 4
3DL, 43DR...Voice coil, 44...Internal housing, 45...Film storage section. Figure 1

Claims (5)

[Claims] (1) An image sensor that electronically captures a part of the subject image formed on the film exposure surface through a photographing optical lens, and a plurality of image sensors that drive the image sensor at high speed to capture multiple images of the subject image within the film exposure period. an image sensor driving means for repeatedly reading out a subject image over a period of time; and a means for detecting a shift in the subject image formed on the film exposure surface by finding a correlation between the subject images repeatedly read out from the image sensor at high speed. and means for correcting the deviation of the subject image formed on the film exposure surface by displacing the optical positional relationship between the photographing optical lens and the film exposure surface with respect to the subject according to the detected deviation amount. Featured camera device. (2) The image pickup device captures a part of the subject image formed on the exposure surface of the film through the photographing optical lens by inputting the image through the enlarging optical system. camera equipment. (3) The means for detecting the deviation of the subject image stores in a memory a subject image signal that is first captured by an image sensor at the start of film exposure of the subject image, and combines the subject image signal stored in this memory with the subject image signal. According to claim (1), the amount of deviation of the subject image formed on the film exposure surface is determined by performing a two-dimensional correlation calculation with subject image signals that are sequentially captured within the film exposure period of the image. camera equipment. (4) According to claim (1), the means for correcting the deviation of the subject image comprises an actuator mechanism that moves the photographing optical lens in a direction perpendicular to its optical axis according to information on the detected deviation. camera equipment. (5) The means for correcting the deviation of the subject image is characterized by comprising an actuator mechanism that moves at least the film exposure surface according to information on the detected deviation while maintaining the film exposure surface perpendicular to the optical axis. The camera device according to claim (1).