JPH10319476A - Lens hood and lens barrel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a photographer to obtain bits of information on photographing such as photographing power from a lens hood, as necessary, at the time of taking a photograph by displaying the bits of information on photographing, on the outside surface of the lens hood. SOLUTION: A lens barrel 11 has the lens hood 15 attached to the end part on an object side. The lens hood 15 has a shape like a barrel whose top end is slightly widened like a taper and on the outer periphery of the end part on the side of the lens barrel 11, of the lens hood 15, the bits of information on photographing such as a distance meter scale B1 and a power scale G are arranged side by side. The distance meter scale B1 is the same as a distance meter scale B displayed on the outer periphery of a focusing ring 14 and displayed to place an infinite mark at a position corresponding to an index 13, in a peripheral direction. Since the lens hood 15 is normally carried up to a photographing place together with the lens barrel 11, the photographer can obtain the above-mentioned information from the lens hood 15, as necessary, at the time of taking the photograph.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens hood mounted on a lens barrel capable of taking close-up images and a lens barrel to which the lens hood can be mounted.

[0002]

2. Description of the Related Art It is not always necessary when photographing a subject, but when the photographer wants to know information about the photographing, such as how many times the photographing magnification is when the distance to the subject is several meters. There is. For this reason, a scale such as a photographing magnification is often displayed on the outer peripheral surface of the lens barrel.

Other examples of such information display formats include a distance meter scale and a distance foot scale which indicate the distance to the subject. In the case of a lens barrel capable of taking close-up images, the distance from the tip of the lens to the subject is large. There is a working distance scale or the like that indicates the distance of an object.

FIG. 4 is a top view of a conventional zoom lens barrel provided with these scales and capable of close-up photography. In FIG. 4, the lens barrel 1 has a mount 2 at the right end in the figure for attaching to a camera body (not shown). Further, the lens barrel 1 has an index 3 in the upper center.

On the outer periphery of the focus ring 4 rotatably provided near the object side end of the lens barrel 1, six scales, ie, a working distance scale A, a distance meter scale B, a distance Foot scale C, three magnification scales D, E, and F according to zooming
Are provided side by side so as to extend in the circumferential direction.

[0006]

The shorter the lens barrel 1 is, the more convenient it is to handle. Therefore, the lens barrel 1 is designed to be shorter. However, when the total length of the lens barrel is shortened, the space for displaying the above-mentioned six scales is reduced,
The sign of one scale itself must be reduced.

On the other hand, when the sign of the scale is small, there is a problem that the photographer has difficulty in reading. In addition, there is a possibility that adjacent scales may be erroneously read. Therefore, there is an idea to omit displaying such a scale in, for example, a lens instruction manual or the like and displaying the scale on the outer peripheral surface of the lens barrel. However, the lens instruction manual is not always carried every time a photograph is taken, and is often stored in a place different from the place where the photograph was taken. Therefore, even if the photographer wants to obtain information in accordance with the shooting, the lens instruction manual is not at hand and necessary information may not be obtained.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a lens hood and a lens barrel which can obtain information on photographing as needed.

[0009]

In order to achieve the above object, a lens hood according to the present invention is a lens hood (15, 25, 35) attached to a lens barrel (11, 21) capable of taking close-up images. And the lens hood (15,
25, 35), information (A1, B
1, D, E, F, G) are displayed.

According to the lens hood according to the present invention, information (A1, B1, D, E, F, G) relating to photographing such as photographing magnification is displayed on the outer surface of the lens hood (15, 25, 35). Orifice, lens hood (15, 25, 35)
Is normally carried along with the lens barrels (11, 21) to the shooting location due to its nature, so the photographer can provide such information (A1, B1, D, E,
F, G) can be obtained from the lens hood (15, 25, 35).

Further, the lens barrel according to the present invention is a lens barrel capable of taking close-up images, and includes a lens barrel body (11, 12).
1) and a lens hood (1
5, 25, 35) and a lens hood (15, 2).
On the outer surface of (5, 35), information (A1, B
1, D, E, F, G) are displayed.

According to the lens barrel according to the present invention, the lens hood (1) attached to the barrel main body (11, 21).
5, 25, and 35), information (A1, B1, D, E, F, and G) related to photographing, such as photographing magnification, is displayed. Since the camera is usually carried to the shooting location together with the lens barrels (11, 21), the photographer transmits such information as necessary at the time of shooting to the lens hood (15, 25, 3).
It can be obtained from 5).

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a top view of a lens barrel 11 according to the first embodiment of the present invention. The lens barrel 11 is a so-called micro lens capable of taking close-up images.

In FIG. 1, similarly to the prior art shown in FIG. 4, the lens barrel 11 has a mount 12 at the right end in the figure for mounting to a camera body (not shown). Further, the lens barrel 11 has an index 13 in the upper part and near the camera-side end.

Three scales are provided on the outer periphery of a focus ring 14 rotatably provided at the center of the lens barrel 11.
That is, a working distance scale A, a distance meter scale B, and a distance foot scale C are provided side by side. In addition,
The circumferential ridge 14a of the focus ring 14 adjacent to the distance foot scale C is a portion that the photographer holds by hand when rotating the focus ring 14.

Further, the lens barrel 11 has a lens hood 15 attached to an end on the object side. Lens hood 15
Has a cylindrical shape with the tip slightly expanding on a taper, and when attached to the lens barrel 11, extends from the end toward the subject, thereby causing harmful effects other than from the lens angle of view. Light is shielded to prevent light from entering.
Particularly when performing close-up photography, the lens hood 15 is used as much as possible. The lens hood 15
When carrying or storing the lens barrel 11, the lens barrel including the lens hood 15 can be detached and the tip thereof can be inserted toward the lens barrel 11, so that the lens barrel including the lens hood 15 can be attached. Cylinder 11
The overall length is reduced, thus making it easier to carry and store.

In the state shown in FIG. 1, a distance meter scale B1 is provided on the outer periphery of the end of the lens hood 15 on the lens barrel 11 side.
And a magnification scale G are also provided. Distance meter scale B
Numeral 1 is the same as the distance meter scale B displayed on the outer periphery of the focus ring 14, and is displayed such that the infinity mark is located at a position corresponding to the index 13 in the circumferential direction.

Next, a method for reading information from the lens hood 15 according to the present embodiment will be described. First, the photographer turns the camera equipped with the lens barrel 11 toward the subject and rotates the focus ring 14 to focus on the subject. In this state, the value of the distance meter scale B on the focus ring 14 with respect to the index 13 (for example, 1
Read m). Next, the photographer looks at the lens hood 15 and
With respect to the value (1 m) on the distance meter scale B1 which is the same as the read value (1 m), the value (1: 5) of the magnification scale G corresponding to the optical axis direction is read. By the above method, for example, when the distance to the subject is 1 m, the photographer can recognize that the photographing magnification is 1: 5 as photographing information.

Note that the photographer may obtain the value (1) of the distance meter scale B1 as other information obtained from the focus ring 14.
m), the value of the working distance scale A (0.8) and the value of the distance foot scale C (3.3 feet) that match in the optical axis direction can be recognized.

In the present embodiment, the lens hood 1
Reference numeral 5 denotes a configuration that does not rotate around the optical axis when attached to the lens barrel 11, but it may be configured to rotate this. Further, in the present embodiment, the magnification scale is displayed on the lens hood, but a working distance scale or a distance foot scale may be displayed on the lens hood.

Next, a second embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a top view of the lens barrel 21 according to the second embodiment of the present invention. The lens barrel 21 is a zoom lens that can also perform close-up photography.

In the second embodiment shown in FIG.
The following description focuses on parts that differ from the first embodiment shown in FIG. 1, and omits the description of common parts.

In FIG. 2, three scales, ie, a working distance scale A, a distance meter scale B, and a distance foot scale C are provided on the outer periphery of a focus ring 24 rotatably provided on the subject side of the lens barrel 21. Have been.

Further, the lens barrel 21 has a lens hood 25 attached to the object side end. In the state shown in FIG. 2, a distance meter scale B1 and magnification scales D, E, and F are provided side by side on the outer periphery of the end of the lens hood 25 on the lens barrel 21 side. The distance meter scale B1 is displayed such that an infinity mark substantially at the center with respect to the entire display of the scale is aligned with the index 23 in the circumferential direction, so that the photographer can easily obtain information from the upper surface. I am able to understand.

Next, a method for reading information from the lens hood 25 according to the present embodiment will be described. First, the photographer turns the camera equipped with the lens barrel 21 toward the subject, rotates the focus ring 24, and focuses on the subject. In this state, the value of the distance meter scale B on the focus ring 24 with respect to the index 23 (for example, 1
Read m). Next, the photographer looks at the lens hood 25,
With respect to the value (1 m) at the same distance meter scale B1 as the read value (1 m), a magnification scale D corresponding to the optical axis direction,
Read either value of E or F.

Here, since the lens barrel 21 is a zoom lens barrel, the photographing magnification changes due to a change in focal length based on zooming. Therefore, in the present embodiment, as the representative values of the focal length that changes due to zooming, a wide focal length (f = 70 mm), a middle focal length (f = 105 mm), and a telefocal length (f = 180 mm)
Magnification scales D, E, and F are provided for each of them.

That is, when the zoom lens barrel 21 is in the wide state and the distance to the subject is 1 m, the photographer can see that the photographing magnification is 1:12 by looking at the corresponding magnification scale D. Can be recognized as shooting information. Similarly, when the photographer is in the middle state or the telephoto state and the distance to the subject is 1 m, the photographer can see that the photographing magnification is 1: 9 or 1: 5 by looking at the corresponding magnification scale E or F. Can be recognized as shooting information.

FIG. 3 is a top view of a lens hood 35 according to a third embodiment of the present invention. 1 is different from the lens hood 15 shown in FIG. 1 only in that the scale displayed on the outer periphery of the lens hood 35 is not a distance meter scale but a working distance scale A1. The lens hood 35 is used by being attached to the lens barrel 11 of FIG.

As in the above-described embodiments, by displaying the magnification scale and the like on the lens hood, the number of scales to be displayed on the outer periphery of the focus ring can be reduced. Since the scales can be easily viewed and the sign of the scales can be displayed large without extending, the photographer can easily obtain necessary information.

In addition, due to the nature of the lens hood, since it is often carried together with the lens barrel, necessary information may not be obtained immediately due to misplacement or loss as in the lens instruction manual. And the handling is convenient.

[0031]

As described above, according to the lens hood according to the present invention, information relating to photographing such as photographing magnification is displayed on the outer surface of the lens hood. Since the camera is carried together with the tube to the shooting location, the photographer can obtain such information from the lens hood as needed at the time of shooting.

Further, according to the lens barrel according to the present invention, the outer surface of the lens hood attached to the lens barrel main body has:
Information about photographing such as photographing magnification is displayed, and the lens hood is normally carried together with the lens barrel to the photographing place due to its nature, so the photographer can add such information as necessary at the time of photographing. Can be obtained from a lens hood.

[Brief description of the drawings]

FIG. 1 is a lens barrel 1 according to a first embodiment of the present invention.
1 is a top view of FIG.

FIG. 2 shows a lens barrel 2 according to a second embodiment of the present invention.
1 is a top view of FIG.

FIG. 3 is a top view of a lens hood 35 according to a third embodiment of the present invention.

FIG. 4 is a top view of a zoom lens barrel capable of performing close-up shooting according to the related art.

[Explanation of symbols]

 11, 21 Lens barrel 13, 23 Index 14, Focus ring 15, 25, 35 Lens hood A Working distance scale B, B1 Distance meter scale C: Distance foot scale D, E, F, G: Magnification scale

Claims (5)

[Claims] 1. A lens hood attached to a lens barrel capable of taking close-up images, wherein information on photographing is displayed on an outer surface of the lens hood. 2. The display is at least one of a working distance scale and a magnification scale and a distance meter scale, and the distance meter scale is such that a mark indicating an infinity position matches an index of the lens barrel. The lens hood according to claim 1, wherein the lens hood is displayed. 3. A lens barrel capable of taking close-up images, comprising: a lens barrel main body; and a lens hood attached to the lens barrel main body, wherein information on photographing is displayed on an outer surface of the lens hood. A lens barrel characterized by the following. 4. The display is at least one of a working distance scale and a magnification scale and a distance meter scale, and the distance meter scale is such that a mark indicating an infinity position matches an index of the lens barrel. The lens barrel according to claim 3, wherein the lens barrel is displayed. 5. The lens barrel according to claim 3, wherein the lens barrel is a zoom lens barrel.