JP2000180918A - Lens cap with housing hood and image pickup device provided with it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens cap with a housing hood which can be compactly housed at a time other than a required time and which need not be attached and detached and an image pickup device equipped with it. SOLUTION: When a hood is opened from the lens cap, an upper cover 4 is moved upward from such a state that a cap main body 6 is covered with the cover 4 and a lower cover 5 housed by being pressed by the cover 4 and the main body 6 is opened by spring force. Almost simultaneously with it, blades are extended (the blade 7 from the cover 4 and the blade 8 from the cover 5) so as functions as a lens hood.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens cap with a storage hood used for an optical apparatus having a lens, and an image pickup apparatus provided with the lens cap.

[0002]

2. Description of the Related Art A lens hood is usually attached to a lens of an imaging device such as a video camera. This lens hood protrudes except during shooting, and is an obstacle. Some of the lens hoods are removable in order to solve the above-mentioned problems because the shape is invariable.

[0003]

However, the trouble of attaching and detaching the lens hood is troublesome, and the lens hood may be lost with the lens hood removed. Also, lens caps other than motorized caps are removed one by one at the time of shooting and are hanged with a string so as not to be lost, but the hung lens cap is troublesome.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lens cap with a storage hood which can be compactly stored when not required, and which does not need to be attached and detached, and an image pickup apparatus having the same. And

[0005]

Means for Solving the Problems In order to solve the above problems, the present invention has taken the following means. The present invention is a lens cap with a storage hood attached to an optical device, comprising: a cap body provided with a mounting portion to the optical device; and a hood member foldably attached to the cap body. There is provided a lens cap with a storage hood, wherein a state of a lens cap and a state of a lens hood are taken by opening and closing the hood member.

According to this configuration, since the state of the lens cap and the state of the lens hood are taken by opening and closing the hood member, it is not necessary to remove the lens cap each time a photograph is taken. In addition, it is not necessary to remove the lens hood except at the time of photographing, and it is possible to avoid losing them.

In the lens cap with a storage hood according to the present invention, the hood member is attached to the first lid member rotatably attached to the cap main body and the first lid member in the state of the lens cap. And a second lid member that is pressed and stored.

In the lens cap with a storage hood according to the present invention, the hood member has two pairs of hood pieces, one pair of hood pieces is made of resin, and the other one is formed of resin.
It is preferred that the pair of hood pieces be made of cloth. Thereby, the lens cap can be made thin.

Further, the present invention relates to an image pickup apparatus provided with a lens cap with a storage hood, wherein the apparatus main body includes an image pickup unit and an optical section, and a lens cap with a storage hood attached to the optical section of the apparatus main body. And a lens cap with a storage hood, a cap body provided with a mounting portion to the optical device, a hood member foldably attached to the cap body,
Wherein the opening and closing of the hood member takes a state of a lens cap and a state of a lens hood.

[0010]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In the present embodiment, a description will be given of a case where a so-called video camera device in which a video mechanism unit and a camera mechanism unit are integrated as an imaging device.

FIG. 1 is a perspective view showing a video camera device provided with a lens cap with a storage hood according to the present invention.
This video camera device is composed of main devices such as a lens, a CCD (charge-coupled device), an electric circuit board, a mechanical deck, a viewfinder, and the like.

A filter screw 2a is formed at the tip of the lens unit 2. By screwing the screw 3a of the lens cap 3 with a storage hood onto the screw 2a, the lens cap 3 with a storage hood is mounted on the lens unit 2. The lens cap 3 with the storage hood can prevent the influence of disturbance due to light from the side when taking a picture. The lens cap 3 with a storage hood can open the hood at the time of shooting, and can be stored at times other than shooting.

FIGS. 2A to 2D are state transition diagrams showing the operation of the lens cap 3 with a storage hood according to the present invention. When the hood is opened from the lens cap, FIG.
As shown in FIG. 2, from the state in which the upper cover 4 rotatably attached to the cap body 6 is covered, the upper cover 4 moves upward (in the direction of the arrow) as shown in FIG. Lower lid 5 held down and stored by main body 6
Is opened by spring force.

Next, as shown in FIG. 2C, the blades (the upper lid 4 to the blade 7 and the lower lid 5 to the blade 8) which have been stored almost at the same time are spread, and as shown in FIG.
It becomes a lens hood. In order to reduce the thickness of the lens hood in the state shown in FIG. 2A, a cloth 9 is provided on the left and right sides (a pair of hood pieces) of the lens hood shown in FIG.
For the other parts (another pair of hood pieces), for example, a material such as ABS resin is used.

Next, a detailed configuration of the lens cap with a storage hood will be described. FIG. 3 is an exploded perspective view showing a lens cap with a storage hood according to the present invention. The cap body includes a rotating ring 11 screwed to a mounting portion 10 of the apparatus main body, and a mounting member 12 screwed to the mounting portion.
It is composed of That is, the mounting portion 10 and the mounting member 12 are formed with screws, and are fixed by being screwed together. Therefore, since the rotating ring 11 is not fixed but merely sandwiched between the mounting portion 10 and the mounting member 12, the rotating ring 11 can be freely rotated. It has a mechanism for tightening screws.

The lower lid 13 of the hood is inserted into a boss 12b formed at the lower part of the mounting member 12 by inserting a projection 13a formed at the lower part of the lower lid 13 so as to extend outward. It is mounted rotatably. Similarly,
The upper lid 16 of the hood is rotatably mounted by inserting a protrusion 16 a formed on the upper part of the upper lid 16 so as to extend outward into a boss 12 a formed on the upper part of the mounting member 12. I have.

The lower lid 13 and the upper lid 16 are formed with spring mounting portions 13d and 16b, respectively, to which a torsion coil spring (not shown) is mounted. By the torsion coil spring, a force is applied in a direction in which the lower lid 13 and the upper lid 16 always open (a direction in which the lower lid 13 and the upper lid 16 are deformed into a hood).

The lower lid 13 is opened until it comes into contact with a stopper 12d formed at the lower part of the mounting member 12, and a hemispherical projection 13e formed on the lower lid 13 is
The lower lid 13 is firmly held by the mounting member 12.

The lower lid 13 has folding blades 14, 1
5 is attached. Bosses 14a and 15a are formed on the blades 14 and 15, respectively, and are formed at the side ends of the lower cover 13 and protruded inside 13b and 13c.
Are fitted respectively. Thus, the blades 14 and 15 can be opened and closed in a double door.

Protrusions 14b, 15b are formed inside the bosses 14a, 15a of the blades 14, 15, and a torsion coil spring (not shown) is attached thereto.
Thus, a force is applied in a direction in which the blades 14 and 15 always open (a direction in which the blades 14 and 15 are deformed into hoods). Also,
The upper lid 16 is also provided with blades 17 and 18.

FIG. 4 shows the upper cover 1 from the arrow X direction in FIG.
FIG. 6 is a front view when the blade 6 and the blades 17 and 18 are viewed. Above the upper lid 16, a shaft 16c for mounting the blades 17, 18 is mounted. At the center of the upper lid 16, a pressing member 16d for pressing the blades 17, 18 is provided. The blades 17 and 18 have holes 17a,
18a is formed, and the blades 17 and 18 are attached to the upper cover 16 by passing the holes 17a and 18a through the shaft 16c of the upper cover 16. In addition, this feather 1
7, 18 are sandwiched between the main body of the upper lid 16 and the holding member 16d.

FIGS. 5A and 5B are views showing the state of the blade when the blade is attached and stored (lens cap). FIG. 5A is a front view, and FIG. 5B is a cross-sectional view along the line AA. . Here, a state when the right blade 17 is attached will be described. A stopper 1 is provided inside the shaft 16c of the upper lid 16.
6e are formed. This stopper 16e is shown in FIG.
As shown in (b), it has a substantially triangular cross-sectional shape.

A protruding portion 17b is formed inside the blade 17 so as to extend inward. When the blade 17 is rotated clockwise from the state shown in FIG.
Projecting portion 17b contacts the stopper 16e. When the projecting portion 17b gets over the stopper 16e once, as shown in FIG.
e to prevent it from returning to its original state.

By doing so, the blade is attached to the upper lid 16 like the blade 18 shown in FIG. This state is a state at the time of storage (lens cap). As described above, the blade is composed of the upper lid 16 and the holding member 1.
The structure is such that the shaft 16c is not subjected to excessive force by being sandwiched between the shafts 6d. In addition, 16f in the figure is a space for holding down the blade with a finger when storing the blade.

FIGS. 6A and 6B are views showing a state at the time of unfolding (lens hood), wherein FIG. 6A is a front view, and FIG.
It is sectional drawing which follows a line. A spring 19 is provided between the protruding portions of the blade.
And the force of this spring causes the blades 17,
18 is always kept in the state shown in FIG.

When the members shown in FIG. 3 are assembled in this way, the structure shown in FIG. 7 is obtained. This state is a state of the lens cap. When the hood is opened from this state and the blades are extended, the state shown in FIG. 8 is obtained. This state is a state of the lens hood. In the present invention, in order to reduce the thickness of the portion C in FIG. 7, it is preferable that the upper lid 16 and the lower lid 13 of the hood in FIG.

FIGS. 9A and 9B are views showing another embodiment of the lens cap with a storage hood of the present invention, wherein FIG. 9A is an exploded perspective view, and FIG. 9B is a front view when viewed from the arrow X direction. is there. In this aspect, a mechanism is provided for facilitating closing when the hood is stored. First, at the time of storage, the blades 14 and 15 attached to the lower lid 13 are folded as shown in FIG.

When the lower lid 13 is stored in the mounting member 12, the outwardly extending portions 14c and 15c formed on the blades 14 and 15 are brought into contact with the projections 12f provided on the mounting member 12. I do. Thus, the blades 14 and 15 can be pressed only by pressing the lower lid 13. Further, a pin 16g formed in the upper center of the upper cover 16 is applied to the contact portions 14d and 15d of the blade to thereby make the upper cover 16
The blades 14 and 15 can be pressed simply by pressing the blade. As a result, the lower lid 13 can also be pressed by the upper lid 16. With such a mechanism, it is possible to transform the lens hood into the lens cap with one hand.

As described above, the lens cap with the storage hood according to the above-described embodiment does not require removing the lens cap each time photographing is performed. In addition, it is not necessary to remove the lens hood except at the time of photographing, and it is possible to avoid losing them. In addition, the lens cap can be transformed from the lens cap to the lens hood with one touch, and the lens hood can be transformed into the lens cap with one hand, thereby improving convenience.

In the above embodiment, the case where the imaging device is a video camera device is described. However, the present invention is applicable to all optical devices having a lens such as a camera.

[0031]

As described above, the lens cap with the storage hood of the present invention and the imaging apparatus having the same adopt the lens cap state and the lens hood state by opening and closing the hood member. It can be stored compactly and does not need to be attached or detached.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a video camera device provided with a lens cap with a storage hood according to the present invention.

FIGS. 2A to 2D are state transition diagrams showing the operation of a lens cap 3 with a storage hood according to the present invention.

FIG. 3 is an exploded perspective view showing a lens cap with a storage hood according to the present invention.

FIG. 4 is a front view of the upper cover 16 and the blades 17, 18 viewed from the direction of arrow X in FIG. 3;

FIGS. 5A and 5B are views showing the state of the blade when the blade is attached and the lens cap is stored (lens cap) in the lens cap with a storage hood according to the present invention, FIG. 5A is a front view, and FIG.
FIG. 2 is a cross-sectional view taken along line AA.

FIG. 6 is a diagram showing a state when the lens cap with a storage hood of the present invention is opened (lens hood);
(A) is a front view, (b) is sectional drawing which follows the BB line.

FIG. 7 is a perspective view showing a lens cap state of the lens cap with a storage hood of the present invention.

FIG. 8 is a perspective view showing a lens hood state of the lens cap with a storage hood of the present invention.

FIG. 9 is a view showing another embodiment of the lens cap with a storage hood of the present invention, wherein (a) is an exploded perspective view,
(B) is a front view when seen from the arrow X direction.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Video camera main body, 2 ... Lens part, 3 ... Lens cap with storage hood, 4, 16 ... Upper lid, 5, 13 ... Lower lid, 7, 8, 14, 15, 17, 18 ... Blade, 9 ... Cloth,
10 mounting part, 11 rotating ring, 12 mounting member, 19 spring.

Claims (4)

[Claims] 1. A lens cap with a storage hood attached to an optical device, comprising: a cap body provided with a mounting portion to the optical device; and a hood member foldably attached to the cap body. A lens cap with a storage hood, wherein a state of a lens cap and a state of a lens hood are taken by opening and closing the hood member. A second lid member rotatably attached to the cap main body, and a second lid member held by the first lid member in the state of the lens cap. The lens cap with a storage hood according to claim 1, comprising: a lid member. 3. The hood member has two pairs of hood pieces, wherein one pair of hood pieces is made of resin, and the other pair of hood pieces is made of cloth. A lens cap with a storage hood according to claim 1 or claim 2. 4. An imaging apparatus provided with a lens cap with a storage hood, comprising: an apparatus main body including an imaging unit and an optical unit; and a lens cap with a storage hood attached to the optical unit of the apparatus main body. The lens cap with a storage hood includes: a cap body having an attachment portion to the optical device; and a hood member foldably attached to the cap body. An imaging apparatus, which adopts a state of a lens hood and a state of a lens hood.