JP3487527B2 - Light refraction device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photorefractive mechanism for refracting input light of an electronic still camera or an image input system for inputting an image using an image pickup device.

[0002]

2. Description of the Related Art An area sensor such as a CCD used in an electronic still camera or an image reading apparatus uses one image pickup device of 250,000 pixels or 400,000 pixels for consumer use. A camera using a plurality of CCDs and an image pickup device having a pixel number of nearly 600,000 pixels are used for high-end machines and commercial purposes. Further, there is a CCD system having a pixel number of 1,000,000 or more for demanding higher resolution, but it is very expensive. Therefore, a line sensor such as a one-dimensional CCD is moved on the image plane, or an image formed on a two-dimensional CCD, which is an area sensor, is relatively minutely moved to capture an image a plurality of times, and the apparent number of pixels is reduced. A system that looks like an increase has been proposed or sold.

There are two methods for relatively moving the image formed on the sensor. One is a method of moving the sensor itself, and the second is a method of moving an optical path to move an image formed on the sensor. As a concrete example of the latter, a mirror is used (publication 50-80027: unidirectional, publication 5).
6-20393: 2 direction), using a light deflecting element (publication 50-80027), using a liquid crystal prism (publication 50-112054), and moving the lens itself (publication 5).
3-56916, JP 60-91774), using wedge-shaped glass (JP 58-197970), using a mask (JP 56-72575), and tilting flat glass (JP 51-25914: one direction). , Pp. 53-109658: 2 direction). Among them, the method of inclining the light refraction member such as the flat glass is as shown in the configuration diagram of FIG.
The flat glass 2 is inserted between the two and tilted. Since the movement amount is determined by the thickness, refractive index and tilt angle of the light refraction member, it is only necessary to control the tilt angle and downsizing is possible. It is also cheap.

As a method of giving an inclination, a rotating shaft is attached to a transparent plate, and a coil, a magnet and a spiral spring are used.
6-162590), using a pulse motor (open to the public 5
9-15378), using a piezoelectric element (Publication Sho 60-5)
4576), a magnetic plate is attached to a part of a transparent plate, and an electromagnet is used (publication 60-223388). Both the method of using a coil, a magnet, and a spiral spring with a rotary shaft attached to a transparent plate, and the method of using a pulse motor have problems in using them for tilt angle control that requires precision. In addition, since the rotary shaft is configured to rotate from the side, the mechanism becomes large. The piezoelectric element requires a large member to obtain a small amount of displacement, and requires electric power as compared with other methods. These are expensive because they have a large number of parts. The method of attaching the magnetic plate to a part of the transparent plate is a method that consumes less power and is less expensive. However, how to obtain the accuracy of the deflection angle remains a technical issue.

As described above, the cost of a solid-state image sensor having a large number of pixels capable of obtaining high resolution is high. In a system that apparently increases the number of pixels by using a low-cost solid-state imaging device with a small number of pixels, the size, accuracy, power, and cost of the device itself are problems. In the present invention, small size and high reliability
A high-precision, low-power, low-cost photorefractive mechanism
The cost of the entire image input device using the solid-state image sensor
The purpose is to suppress.

The present invention relates to an input light for a solid-state image sensor.
Is provided on the optical axis of the optical axis to refract the input light.
In the folding device, it was wound in the circumferential direction of the circular light refraction plate.
A light refraction part in which a coil is provided around the circular light refraction plate.
And the direction of current flowing through the coil provided in this light refraction part
Depending on the
The circular optical axis provided adjacent to the light refracting part
A ring-shaped magnet with a larger outer circumference than the folded plate
Is provided so as to face the ring-shaped magnet and absorbs the coil.
With respect to the incident light when an attractive force is generated and when a repulsive force is generated
The light so that the angles of the surfaces of the light refracting plate differ from each other.
A member having a space for accommodating the refraction portion,
The folding part is a light refraction plate and a coil wound around the light refraction plate.
It is an integrated structure with the part, and the end of the coil is located at one place around it.
That it has a protrusion for passing two wire rods
Characterize. In addition, in the present invention, a solid-state image sensor is used.
Is provided on the optical axis of the input light to refract the input light
In the optical refraction device for
A coil wound on the periphery of the circular light refraction plate
Flow through the light refraction part and the coil installed in this light refraction part.
Depending on the direction of current flow, the attractive force or repulsive force is applied to the coil.
The circle provided adjacent to the light refracting portion so as to give
-Shaped magnet having a larger outer circumference than the light-reflecting plate
And the coil provided opposite to the ring-shaped magnet.
When the suction force against the
The angles of the surface of the light refraction plate with respect to the incident light are different from each other.
A member having a space for housing the light refraction portion.
However, the member enhances the efficiency of the magnetic force of the ring magnet.
Auxiliary magnetic material for
It is characterized by having stones. Further, in the present invention,
Provided on the optical axis of the input light to the solid-state image sensor,
In a photorefractive device for refracting force light, circular light
A coil wound in the circumferential direction of the refraction plate is used to refract the circular light.
The light refraction part provided on the periphery of the plate and the light refraction part
Attracted to the coil depending on the direction of the current flowing through the coil
Adjacent to the light refraction part to give force or repulsion
Has a larger outer circumference than the circular light refraction plate provided
Ring magnet and the ring magnet
When the attraction force against the coil is generated and the repulsion force is generated,
The angle of the surface of the photorefractive plate with respect to the incident light at
Has a space to accommodate the light refraction part so that it is different from each other.
And the magnetizing direction of the ring-shaped magnet is
It is characterized by being the direction of the optical axis passing through. The present invention
Is installed on the optical axis of the input light to the solid-state image sensor.
In a photorefractive device for refracting the input light.
The coil wound in the circumferential direction of the circular light refraction plate.
The light refraction part provided on the periphery of the circular light refraction plate
Depending on the direction of the current flowing through the coil provided at the fold
The light refraction is applied so that the coil is attracted or repelled.
Larger than the circular light refraction plate provided adjacent to the section
With a ring-shaped magnet having a unique outer circumference
It is installed facing away from the coil when the attraction force against the coil is generated.
The light refraction plate for the incident light when the force is generated
The optical refraction part is housed so that the angles of the surfaces of the
And a member having a space for
When a force is generated, the light refracting portion and the ring magnet come into contact with each other,
When the repulsive force against the coil is generated,
It is characterized in that the recording members are in contact with each other. Also in the present invention
Is provided on the optical axis of the input light to the solid-state image sensor.
In a photorefractive device for refracting the input light, a circular
The coil wound in the circumferential direction of the light refraction plate of
The light refraction part provided on the periphery of the refraction plate and the light refraction part
Depending on the direction of the current flowing through the coil
Adjacent to the light refraction part so as to give attractive force or repulsive force
The outer circumference larger than the circular light refraction plate
The ring-shaped magnet that you have and the
When the suction force against the coil is generated and the repulsion force is generated
The angle of the surface of the photorefractive plate with respect to the incident light at time and
The space for accommodating the light refraction part should be
A member having, wherein the light refracting portion has the ring magnet.
The light refracting plate refracts the input light in a state of being in contact with
Without passing through, and the light refraction part comes into contact with the member.
In this state, the light refracting plate is designed to
It is characterized by refracting.

[0007]

[Function] The photorefractive mechanism is located between the lens and the image sensor,
The light condensed by the lens is refracted to move the image formed on the image sensor. The light refraction portion, in which a coil is formed around a light refraction member such as glass, is movable in the optical axis direction in a movable space inside a housing having a ring magnet.
Depending on the current direction of the coil, it may be attracted to the ring-shaped magnet or it may be in contact with the facing housing surface. Between these two positions, the glass of the light refraction portion has an angle difference in a certain direction with respect to the optical axis, and the length determined by the thickness of the glass, the refractive index, and the angle difference is
It is the moving distance of the image formed on the image sensor. The direction of movement is
This is the direction in which the angle difference is generated.

[0008]

EXAMPLE As described with reference to FIG. 43, the photorefractive device of the present invention is used by being located between the rear lens of the lens portion and the image pickup device. The block diagram is shown in FIG. By lens 1,
The condensed light passes through the light refraction mechanism 2 of the present invention,
The position of the image formed on the solid-state image sensor 3 can be moved.

FIG. 2 shows an embodiment of the detailed internal structure of this light refraction mechanism. 2 (a) is a sectional view, and FIG. 2 (b) is
The view seen from the lens side, and FIG. 2C is the view seen from the side. The magnet whose position is fixed by the housing has a ring shape as shown in FIG. 3, and light passes through the inside thereof. As shown in FIG. 4, the light refracting portion 2 has a flat shape in which a coil is wound around a circular parallel plate glass which is a light refracting member, and this is fixed with a fixing material to be integrated with the glass.
The fixing material may be resin. From the resin around the light refracting portion 2, two wire members of the coil are projected from substantially the same position. The light refraction part 2 is built in the housing as shown in FIG. 2A and is movable in a certain space. One surface faces the ring-shaped magnet 6, and the movement of the ring-shaped magnet is restricted by the surface of the ring-shaped magnet. The other side is restricted by the side of the housing 5. The housing surface here has a light passage hole that allows light to pass through. At one place in the circumferential direction of the light refracting portion of the housing 5, the coil 2
There is an opening 8 through which the wire 7 of the book passes. Since the light refraction part 2 is movable, the light refraction plate and the surrounding coil part are
It needs to be robust. Also, the coil portion needs to be covered with a protective member.
If it is integrally formed with the light refraction plate as in (d), the cost will be reduced. Depending on the direction of the current flowing through the coil, the photorefractive section 2 is separated from the ring-shaped magnet 6 and sticks to it.
This state is shown in FIGS. The diameter of the coil portion of the light refraction portion 2 is smaller than the diameter of the ring magnet 6. 5 and 6
Indicates that the direction of the current flowing through the coil is opposite. In the current direction shown in FIG. 5A, a force due to the magnetic force of the ring magnet 6 is generated in the coil 12 of the light refracting portion 2, and the light refracting portion 2 is attracted in the direction of the ring magnet 6 to cause the light refracting portion. The peripheral portion 10 of the above contacts the ring-shaped magnet 6 and becomes stable. At this time, light is incident on the glass at a certain angle. When the direction of the current flowing through the coil 12 is reversed as shown in FIG. 6, the light refracting portion 2 repels the ring-shaped magnet 6 and stabilizes in contact with the housing surface as shown in FIG. 6B. At this time, the magnet surface and the surface of the housing have a certain angle difference in a certain direction so that the optical axis and the glass have different angles.

The angular difference between the two positions in FIGS. 5 and 6 is α degrees, and the light passing through the light refracting portion 2 is refracted in the direction in which the inclination is formed. The moving distance of the image formed on the image pickup element 3 is determined by this angular difference, the refractive index of the glass and its thickness, and the moving direction is the direction in which the angular difference is generated. In the present embodiment, an example in which the glass and the optical axis are perpendicular to each other at the time of adsorption and the light is obliquely incident on the glass at the time of repulsion (angle α
Degree). This can be realized by making the optical axis perpendicular to the surface of the ring-shaped magnet 6 and inclining the optical axis and the housing surface in contact with the opposite light refracting portion 2 at an angle α in a certain direction. If one of the incident angles is perpendicular to the optical axis,
The inclination direction of the surface in contact with the light refraction portion 2 that determines the direction of movement needs to be set only on the other side, and the accuracy of assembly with the component itself is eased.

In FIG. 2, the housing 5 is composed of two parts, which are referred to as housings 5 and 5 '. A ring magnet whose both surfaces are parallel to each other is sandwiched between the housings 5 and 5 ', and when attracting each other, a light refracting plate is attached to this surface, and light is incident vertically on the glass. Since the magnet having neither the tilt angle nor the direction of movement is used as described above, when the magnet is incorporated into the housing 5, precise positioning is not required and the assembling process is simplified.

Also, in the embodiment shown in FIG. 2, two light refracting portions 2 are mounted, and a ring-shaped magnet 6 is sandwiched between them so that the light refracting portion 2 and the light refracting portion 2 contact each other when the magnet repels. By making the mounting directions of the angles of the respective housing surfaces different, it is possible to have two moving directions of image formation. Here, as shown in FIG. 2B, two axes are formed in the directions of the housings 5 and 5 '. Further, by arranging the magnets in between, the number of magnets is only one, and the distance between the lens 1 and the image pickup element can be effectively utilized.

As described above, the moving distance is determined by the thickness of the light refracting plate of each light refracting portion 2, the refractive index of the light refracting plate, and the difference in inclination between the two positions where the light refracting portion is movable.
At this time, if the thickness and the refractive index of the light refracting plates of the two light refracting portions are made the same and determined only by the difference in inclination, the two light refracting portions can be made common, which contributes to cost reduction. To do. The diameter of the glass, the inner diameter of the ring-shaped magnet, and the light passage hole of the housing are required to be equal to or larger than the size of the light flux that the lens collects and forms an image on the image sensor. This state is shown in FIG. No matter how the light refracting portion 2 is attracted to the ring-shaped magnet 6 or how it contacts the housing 5 when repelling, the light flux passes through the inner parallel flat plate glass portion. The light passage hole 9 of the housing and the inner diameter of the ring-shaped magnet 6 are also large enough to pass the light beam. The material of the housing itself is made of a material having little or no magnetism that is not affected by the ring magnet in order to enhance the efficiency of the magnetic force of the ring magnet. Figure 8
Is an example of another housing. Ring magnet
The housing 5 is mounted so as to be embedded in the housing 5 ', and the housing 5 contacts the housing 5'.

FIG. 9 shows an embodiment of how to attach the lens and the solid-state image pickup device. The housing 5'has a mounting portion for the image pickup device. This example is an example having a mounting screw receiving portion of the image pickup element substrate. By providing the housing with the mounting part for the image sensor,
The accuracy of the moving direction of the image formed on the image pickup device can be improved. The housing 5 is provided with a screw for inserting a lens. Thereby, the accuracy of the optical axis can be improved. As an example of attachment between the housings 5 and 5 ', an example using a joining screw is shown here. FIG. 10A shows the attached state, and FIG. 10B shows the view when viewed from the lens direction. The coil wire of the light refraction part is drawn out from the housing 5, and the coil wire of the light refraction part is drawn out from the housing 5 ′ and connected to the CCD substrate.

Since the light refracting portion needs to be movable, it is desirable that the light refracting portion be as light as possible. FIG. 11 shows an example in which a hole is provided in a protective member that protects the coil for weight reduction. FIG. 12A is an example in which a protrusion is provided on a part of the periphery of the light refraction portion. Since the light refracting portion is not fixed to the housing portion in this embodiment, it may rotate in the movable space due to vibration or impact. When rotating, the wire of the coil coming out of the light refraction part is drawn into the movable space,
This will affect the operation of the light refraction part and also lead to wire breakage. Therefore, if a protrusion 17 corresponding to the coil wire rod take-out hole of the housing is provided in a part of the periphery of the light refraction portion and the coil wire rod is taken out from here, wraparound and disconnection can be prevented. As shown in FIG. 12B, the protrusion has a size such that the light refracting portion does not rotate near the periphery of the hole.

FIG. 13 shows another embodiment of the coil wire rod take-out port 8. In the above embodiments, the housing 5
Although a hole is provided in a part of the housing and the housing is taken out from this hole, in this example, the housing is formed into a shape as shown in the drawing to form an outlet.

FIG. 14 shows an example in which the coil wire 7 of the light refracting portion 2 is taken out from two separate places and taken out from the two holes formed in the housing. The direction of magnetization of the ring-shaped magnets of the above-described embodiments is as shown in FIG.
N and S were formed on both surfaces. This cannot be distinguished with parallel ring-shaped magnets, so if a mark for distinction is attached to the inner diameter portion, it will not get lost during assembly. FIG. 16 shows an example in which a protrusion is formed on the inner diameter, and FIG. 17 shows an example in which a recess is formed.
8 is an example in which a distinguishing mark is written.

In addition to the magnetizing direction of FIG. 15, there is a method of magnetizing the inner and outer diameters as shown in FIG. At this time, when the center diameter of the ring magnet and the center diameter of the coil of the light refracting portion are set to be substantially the same as shown in FIG. 20, the magnetic force can be effectively used.

An example of arranging a magnetic body for the purpose of making the magnetic force generated by the ring magnet more effective will be shown. FIG. 21 shows
A method in which the ring-shaped magnet and the magnetic body sandwich the light refracting portion, FIG.
Is an example of arranging a magnetic body inside the ring magnet.
At this time, the inner diameter of the magnetic body is set to a size that allows the light flux to pass through. At this time, the magnetic force is bent in the inner diameter direction as shown in FIG. 22 (b), and the magnetic force acting on the coil of the light refracting portion as shown in FIG. 23 is smaller than that in FIGS. 5 (a) and 6 (a). The force that acts on the inside of the light refracting portion and that acts at a right angle to it is inclined in the direction of the optical axis, and the magnetic force can be used more effectively.

As shown in FIG. 24, it is possible to use a magnet itself instead of a magnetic body. FIG. 25 is an example in which the center diameter of the light refracting portion is larger than the center diameter of the ring magnet. A force using the magnetic force of the ring magnet in the outer diameter direction acts on the coil. FIG. 26 shows an example in which a ring-shaped magnetic body is attached to the outside of the ring-shaped magnet. Contrary to the example of FIG. 22, the magnetic force lines are bent in the outer diameter direction, and the force acts more in the optical axis direction than in FIG. FIG. 27 is a structural example of a housing including FIG.

FIG. 28 shows an embodiment of a light refraction mechanism having one light refraction portion and one ring magnet built therein, which enables movement of a formed image in a single direction. FIG. 29 shows an embodiment of a light refraction mechanism including a plurality of light refraction parts and a plurality of ring magnets. In this embodiment, there are three light refracting portions, which makes it possible to obtain movement directions of up to three axes as shown by ABC in FIG. 29 (b). Alternatively, FIG.
It is also possible to change the moving distance of one axis as shown in FIG. 3 or to change the moving distance of one axis, or to align them in the same direction as shown in FIG.

At this time, two ring-shaped magnets may be inserted between the light refracting portions as shown in FIG. 29, or magnets may be placed at both ends as shown in FIG. It may be sandwiched.

At this time, the magnets are magnetized so that the directions of the magnetic fields are the same toward the optical axis. In addition, the magnet and the light refraction portion sandwiched between the magnets need to be configured to have an angular difference between the two positions. If both magnets are perpendicular to the optical axis and the light refracting portion moves so as to be in contact with both of them, an angle difference cannot be generated.
At least one side may be configured to contact the angled housing surface, as shown in FIG. Still further, a light refraction mechanism having more light refraction portions is possible.

FIG. 32 shows a current flowing through the coil of the photorefractive section. In this example, the same current (± I) is caused to flow depending on the direction of the current. When + I, it attracts the ring magnet, and when it is -I, it repels. Since the magnetic force of the ring magnet becomes weaker as it moves away, the force is weaker when the light refracting portion repels than when it is attracted. FIG. 33 shows this in consideration. The repulsive current is (-I
a), (+ Ib) is set to be larger than the current during suction. Further, FIG. 34 shows a method for increasing the magnetic force at the time of switching from the repulsed state to the repulsed state when the repulsive state is repulsed to ensure the switching and to perform at high speed. Large current for a certain period of time after switching (-Ia1, + Ib
1), then the current is suppressed. (-Ia2, + Ib
2) FIG. 35 shows an example in which the current is suppressed only during suction.

FIG. 36 shows how the light refraction mechanism operates. When not operating, no current is passed (t0 period), when operating (t1 period), current is passed in either direction, and the operation is stopped during the period of t2. It is also possible that the light refraction part sticks to the adhesive surface when it is not operated for a long time or when it is used in a humid place. At this time, normal operation can be obtained by pre-driving for a certain period at the start of operation. An example at this time is shown in FIG. ts is the time of the pre-driving, and driving is performed at a certain frequency during this period. FIG. 38 shows an example in which the current value of the pre-driving is made larger than the normal current. FIG. 39 shows a countermeasure against dew condensation.
In the state where the coil is heated to release the dew condensation, when the heat generation command is received, the current is being supplied for a certain period (th).

In the invention of the configuration shown in FIG. 1, since the light refraction mechanism is located between the lens and the image pickup device, a lens having a long back focus is required. For a lens with a short focal length and high resolution, this additional condition increases the cost of the lens, and the back focus should be as short as possible. For this reason, in FIG.
An example in which a cyan filter placed in front of D is used to shorten the back focus is shown.

FIG. 41 shows an example in which a cyan filter is used for the protective glass of the CCD and the back focus is shortened. So far, the photorefractive mechanism of the present invention has been shown as an example in which it is located between the lens and the image pickup element, but a system located between the lenses is also conceivable. FIG. 42 shows an example thereof. It is also possible to put a system in front of the lens. This embodiment is shown in FIG.

As described above, by using a low-priced solid-state image pickup device with a small number of pixels, a photorefractive mechanism is sandwiched between the lens and the solid-state image pickup device to move an image formed on the solid-state image pickup device.
It is a photorefractive element used in a system that apparently increases the number of pixels by reading out the image signal multiple times at each position and processing it. The light is moved in a certain direction by a certain distance by providing an angle difference between the glass and the optical axis at the positions of attraction and repulsion with the magnet. The angle difference is given by the angle between the two surfaces that are in contact with the light refracting portion. The movement of the position of the light refraction portion is due to the direction of the current flowing through the coil. The glass, magnet, and housing are made of cheap materials and a small number of parts, so the cost is low and the size is small.The position of the light refraction part is determined only by the direction of the current flowing through the coil, so it is easy to handle and the power consumption is low. End In addition, since the moving distance is determined by the angle formed by the surface in contact with the light refracting portion, the thickness of the glass, and the refractive index, and the moving direction is determined by the angled direction, accuracy of the moving distance and direction is easy to obtain.

[0029]

As described above, according to the present invention, it is possible to realize a small-sized, highly reliable, accurate, low-power, low-cost photorefractive mechanism, which is used in an image input device using a solid-state image sensor. For example, even if an inexpensive solid-state image sensor having a small number of pixels is used, the number of pixels apparently increases, and a device for inputting an image with high resolution becomes possible.

[Brief description of drawings]

FIG. 1 is a configuration diagram illustrating the present invention.

FIG. 2 is a diagram illustrating a detailed internal configuration of an embodiment of the present invention.

FIG. 3 is an external view of a ring magnet incorporated in FIG.

FIG. 4 is a diagram illustrating a photorefractive device incorporated in FIG.

5A and 5B are views for explaining the operation principle of the light refraction unit of FIG.

FIG. 6 is a diagram for explaining the operation principle of the light refraction unit of FIG.

FIG. 7 is a diagram illustrating how light passes through the light refraction portion of FIG.

FIG. 8 is a diagram of another detailed internal configuration embodiment.

FIG. 9 is a diagram illustrating a method of attaching the photorefractive device of the present invention to a lens unit and a CCD unit.

FIG. 10 is a diagram in which a lens unit and a CCD unit are attached to the photorefractive device of the present invention.

FIG. 11: 1 of a light refraction part built in the photorefraction device of the present invention.
It is a figure of an example.

FIG. 12 is a diagram of another embodiment of a light refraction unit incorporated in the light refraction device of the present invention.

FIG. 13 is a view of another embodiment of the take-out port for the coil wire of the photorefractive part of the photorefractive device of the present invention.

FIG. 14 is a view of another embodiment of the coil wire of the light refraction part of the light refraction device of the present invention and its outlet.

FIG. 15 is a diagram for explaining the magnetization direction of the ring magnet inside the photorefractive device of the present invention and the state of magnetic force lines.

FIG. 16 is a diagram of one embodiment for determining the magnetizing direction of the ring magnet inside the photorefractive device of the present invention.

FIG. 17 is a diagram of another embodiment for determining the magnetizing direction of the ring magnet inside the photorefractive device of the present invention.

FIG. 18 is a diagram of another embodiment for determining the landing direction of the ring magnet inside the photorefractive device of the present invention.

FIG. 19 is a diagram for explaining another example of magnetization of the ring-shaped magnet inside the photorefractive device of the present invention and the state of magnetic force lines thereof.

20 is a diagram for explaining the operation of the light refracting portion in the case of the ring magnet of FIG.

FIG. 21 is a view of another embodiment of the photorefractive device of the present invention, in which an auxiliary magnetic body is used.

FIG. 22 is a diagram for explaining another embodiment of the photorefractive device of the present invention, illustrating an example of using another auxiliary magnetic body and a state of magnetic force lines.

FIG. 23 is a diagram for explaining the operation of the light refraction unit in the embodiment of FIG. 22.

FIG. 24 is a view of another embodiment of the present invention, in which an auxiliary magnet is used.

FIG. 25 is a diagram of another embodiment of the light refraction part of the present invention.

FIG. 26 is a diagram of an example of using an auxiliary magnetic body in the embodiment of FIG. 25.

FIG. 27 is a diagram of an embodiment of the housing of FIG. 25.

FIG. 28 is a diagram of another example of the present invention, which is an example in which there is one light refracting portion.

FIG. 29 is a diagram for explaining another example of the present invention, in which the number of light refracting portions is three and the refracting directions thereof are three directions.

30 is another embodiment of FIG. 29, in which the light refraction direction is
It is a figure of an example in case of two directions.

31 is another embodiment of FIG. 29, in which the light refraction direction is
It is a figure of an example in case of one direction.

FIG. 32 shows a coil of the light refraction unit of the light refraction device of the present invention.
It is a figure explaining one Example which sends an electric current.

FIG. 33 is a diagram for explaining another example in which a current is passed through the coil of the photorefractive section of the photorefractive device of the present invention.

FIG. 34 is a diagram illustrating another example in which a current is passed through the coil of the photorefractive section of the photorefractive device of the present invention.

FIG. 35 is a diagram for explaining another example in which a current is passed through the coil of the photorefractive section of the photorefractive device of the present invention.

FIG. 36 is a diagram illustrating an example in which a current is applied to the coil of the photorefractive section of the photorefractive device of the present invention to operate the coil.

FIG. 37 is a diagram illustrating another embodiment in which a current is applied to the coil of the photorefractive section of the photorefractive device of the present invention to operate the coil.

FIG. 38 is a diagram for explaining another example in which a current is applied to the coil of the photorefractive section of the photorefractive device of the present invention to operate the coil.

FIG. 39 is a diagram for explaining another example in which a current is applied to the coil of the photorefractive section of the photorefractive device of the present invention to operate the coil.

FIG. 40 is an image pickup device portion 1 used in the photorefractive device of the present invention.
It is a figure of an example.

FIG. 41 is a diagram illustrating an example in which an infrared cut filter of an image pickup device section is used as a light refraction plate inside a light refraction device.

FIG. 42 is another configuration diagram of the photorefractive device, the lens, and the imaging element of the present invention.

FIG. 43 is another configuration diagram of the photorefractive device, the lens, and the image pickup element of the present invention.

FIG. 44 is a diagram showing a method for tilting a light refraction member such as a flat plate glass in the related art.

[Explanation of symbols]

Lens… 1, light refraction part… 2, solid-state image sensor… 3, infrared cut filter… 4, housing… 5, ring magnet…
6, coil wire rod ... 7, coil wire rod outlet ... 8, light passage hole of housing ... 9, peripheral portion of light refracting portion ... 10, parallel plate glass ... 11, coil ... 12, fixing material ... 13, diaphragm ... 14, Protective glass ... 15, hole ... 16, anti-rotation protrusion ... 17, ring type magnetic body ... 18, ring type auxiliary magnet ... 1
9

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Tomichi Domon Inventor Komukai Toshiba Town, Komukai-shi, Kawasaki City, Kanagawa Prefecture, Toshiba Research & Development Center, Inc. (72) Inventor Takahiro Murata Komukai, Kawasaki City, Kanagawa Prefecture Toshiba Town No. 1 in Toshiba Research & Development Center (72) Inventor Takahiro Kokubo No. 1 Komukai Toshiba Town, Saiwai-ku, Kawasaki City, Kanagawa Prefecture Toshiba Research & Development Center (72) Inventor Ryosuke Kumagai Saiwai-ku, Kawasaki City, Kanagawa Prefecture Komukai Toshiba Town No. 1 in Toshiba Research & Development Center (72) Inventor Takashi Ishikura No. 1 Komukai Toshiba Town in Kawasaki City, Kanagawa Kanagawa Research & Development Center (56) Reference JP-A-8-251604 (JP, A) JP-A-4-302282 (JP, A) JP-A-61-251380 (JP, A) JP-A-3-276981 (JP, A) Kaihei 7-191359 (JP, A) JP 60-223388 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04N 5/335 G02B 26/08

Claims (5)

(57) [Claims] 1. A solid-state image sensor is provided on the optical axis of input light.
In a photorefractive device for refracting the input light.
Te, the coils wound in the circumferential direction of the circular light refraction plate
The depending a light refracting portion provided on the periphery of the circular light refraction plate, in the direction of the current flowing through the coil provided on the light refracting portion
The light refraction is applied so that the coil is attracted or repelled.
Larger than the circular light refraction plate provided adjacent to the section
And the ring magnet having an outer peripheral such, pairs the ring magnet
The light refraction plate that is provided to face the incident light when the attractive force is generated on the coil and the repulsive force is generated.
Angles to accommodating differently the light refracting portions together in face
And a coil having a space around the light refraction plate, and the light refraction portion is an integral structure of the coil portion wound around the light refraction plate, and the end portion of the coil is provided at one peripheral portion. A photorefractive device comprising a projection for passing two wires. 2. A solid-state image pickup device is provided on the optical axis of input light.
In a photorefractive device for refracting the input light.
Te, the coils wound in the circumferential direction of the circular light refraction plate
The depending a light refracting portion provided on the periphery of the circular light refraction plate, in the direction of the current flowing through the coil provided on the light refracting portion
The light refraction is applied so that the coil is attracted or repelled.
Larger than the circular light refraction plate provided adjacent to the section
And the ring magnet having an outer peripheral such, pairs the ring magnet
The light refraction plate that is provided to face the incident light when the attractive force is generated on the coil and the repulsive force is generated.
Angles to accommodating differently the light refracting portions together in face
A member having an empty space, the member having an auxiliary magnetic body for increasing the efficiency of the magnetic force of the ring magnet, or a magnet at a position for increasing the magnetic force. 3. A solid-state image pickup device is provided on an optical axis of input light.
In a photorefractive device for refracting the input light.
Te, the coils wound in the circumferential direction of the circular light refraction plate
The depending a light refracting portion provided on the periphery of the circular light refraction plate, in the direction of the current flowing through the coil provided on the light refracting portion
The light refraction is applied so that the coil is attracted or repelled.
Larger than the circular light refraction plate provided adjacent to the section
And the ring magnet having an outer peripheral such, pairs the ring magnet
The light refraction plate that is provided to face the incident light when the attractive force is generated on the coil and the repulsive force is generated.
Angles to accommodating differently the light refracting portions together in face
And a member having a space, and a magnetizing direction of the ring-shaped magnet is a direction of an optical axis passing through an inner diameter. 4. A solid-state image pickup device is provided on an optical axis of input light.
In a photorefractive device for refracting the input light.
Te, the coils wound in the circumferential direction of the circular light refraction plate
The depending a light refracting portion provided on the periphery of the circular light refraction plate, in the direction of the current flowing through the coil provided on the light refracting portion
The light refraction is applied so that the coil is attracted or repelled.
Larger than the circular light refraction plate provided adjacent to the section
And the ring magnet having an outer peripheral such, pairs the ring magnet
The light refraction plate that is provided to face the incident light when the attractive force is generated on the coil and the repulsive force is generated.
Angles to accommodating differently the light refracting portions together in face
And a member having that space, the suction for said coil
When a force is generated, the light refracting portion and the ring magnet come into contact with each other,
A photorefractive device, wherein the light refraction portion and the member are in contact with each other when a repulsive force is generated on the coil . 5. A solid-state image pickup device is provided on the optical axis of input light.
In a photorefractive device for refracting the input light.
Te, the coils wound in the circumferential direction of the circular light refraction plate
The depending a light refracting portion provided on the periphery of the circular light refraction plate, in the direction of the current flowing through the coil provided on the light refracting portion
The light refraction is applied so that the coil is attracted or repelled.
Larger than the circular light refraction plate provided adjacent to the section
And the ring magnet having an outer peripheral such, pairs the ring magnet
It provided toward the front Symbol refractive plate with respect to the incident light at the time of the attraction force generating and the time of reaction <br/> Hatsuryoku generated for said coil
Angles to accommodating differently the light refracting portions together in face
And a member having a space , wherein the light refraction portion transmits the input light without refracting the light in the state where the light refraction portion is in contact with the ring magnet, and the light refraction portion is in contact with the member. The light refraction device is characterized in that the light refraction plate refracts incident light at an angle.