JP2011090023A - Lens barrel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lens barrel that speedily and accurately operates operation rings even in case where it is difficult to view displays marked on the operation rings. <P>SOLUTION: The lens barrel (2) has the adjusting operation rings (10 and 20), which are rotatably provided on the periphery of a lens barrel body (50) and adjust an optical state of the lens barrel body (50). In the lens barrel (2), first and second three-dimensionally shaped portions (15 and 17, and 25 and 27, respectively) for clarifying the relation between the rotating direction of the adjusting operation rings (10 and 20) and the optical state are provided near the adjusting operation rings (10 and 20) on the periphery of the lens barrel body (50). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lens barrel.

  Conventionally, there has been known a lens barrel in which a display composed of a plurality of numerical values arranged in a circumferential direction is attached to an outer peripheral surface of an operation ring, and a focal length is represented by a numerical value indicated by an index. (See the following patent publication).

JP-A-9-281376

  However, depending on the lens, the numerical order may be reversed, so if you use multiple lenses with different ordering, you can shoot while looking through the viewfinder, shoot in a dark place, For shooting under circumstances where it is difficult to visually recognize the display attached to the operation ring, it is difficult to operate the operation ring in a quick and accurate direction.

  The present invention has been made in view of such circumstances, and a lens barrel capable of operating the operating ring in a quick and accurate direction even in a situation where it is difficult to visually recognize the display attached to the operating ring. Is to provide.

  In order to solve the above-mentioned problems, a first aspect of the present invention provides a lens barrel having an adjustment operating ring that is rotatably provided on the outer peripheral surface of the lens barrel body and adjusts the optical state of the lens barrel body. In the vicinity of the adjustment operation ring on the outer peripheral surface of the lens barrel main body, there are first and second three-dimensional shapes that clarify the relationship between the rotation direction of the adjustment operation ring and the optical state. , Provided.

  According to a second aspect of the present invention, in the lens barrel according to the first aspect, an index indicating a current optical state is provided between the first and second three-dimensional shape portions. .

  According to a third aspect of the present invention, in the lens barrel according to the first or second aspect, a plurality of displays for displaying the optical state are arranged at predetermined intervals in the circumferential direction on the outer peripheral surface of the adjusting operation ring. The third and fourth three-dimensional shapes indicating the optical state are respectively provided in the vicinity of the displays located at both ends of the plurality of displays.

  According to a fourth aspect of the present invention, in the lens barrel according to any one of the first to third aspects, the adjustment operating ring is for adjusting a focus position, and the first three-dimensional shape portion is provided. Is a concave portion or a convex portion located on the infinite side of the adjustment operation ring, and the second three-dimensional shape portion is a concave portion or a convex portion located on the closest side of the adjustment operation ring. .

  According to a fifth aspect of the present invention, in the lens barrel according to the third aspect, the adjustment operation ring is a focus operation ring for adjusting a focus position, and the third three-dimensional shape portion is included in the plurality of displays. A concave portion or a convex portion located in the vicinity of the display indicating the infinite end, and the fourth three-dimensional shape portion is a concave portion or convex portion located in the vicinity of the display indicating the closest end of the plurality of displays. It is characterized by being.

  A sixth aspect of the present invention is the lens barrel according to any one of the first to third aspects, wherein the adjustment operating ring is for adjusting a focal length, and the first three-dimensional shape portion. Are the two convex portions located on the wide side of the adjustment operation ring, and the second three-dimensional shape portion is the two convex portions located on the tele side of the adjustment operation ring, and the adjustment operation The interval between the two convex portions located on the wide side of the ring is wider than the interval between the two convex portions located on the tele side.

  According to a seventh aspect of the present invention, in the lens barrel according to the third aspect, the adjustment operation ring is a zoom operation ring that adjusts a focal length, and the third three-dimensional shape portion is included in the plurality of displays. Two convex portions located in the vicinity of the display indicating the wide end of the display, and the fourth three-dimensional shape portion is two convex portions positioned in the vicinity of the display indicating the tele end of the plurality of displays. The interval between the two convex portions located near the display indicating the wide end is wider than the interval between the two convex portions positioned near the display indicating the tele end.

  According to the present invention, even when it is difficult to visually recognize the display attached to the operation ring, the operation ring can be operated quickly and accurately.

FIG. 1 is a plan view of a state in which a lens barrel according to a first embodiment of the present invention is mounted on a camera. FIG. 2 is a plan view of a state in which a lens barrel according to a modification of the first embodiment of the present invention is attached to a camera. FIG. 3 is a plan view showing a state in which a lens barrel according to a second embodiment of the present invention is mounted on a camera.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view of a state in which a lens barrel according to a first embodiment of the present invention is mounted on a camera.

  The lens barrel 2 includes a lens barrel main body 50, a focus operation ring (adjustment operation ring) 10 that adjusts the focus (optical state) according to the rotation of the lens barrel main body 50, and the lens barrel main body 50. A zoom operation ring (adjustment operation ring) 20 that adjusts the zoom (optical state) according to the rotation is provided. The focus operation ring 10 and the zoom operation ring 20 are rotatably provided on the outer peripheral surface of the lens barrel main body 50.

  The rear end of the lens barrel body 50 is attached to the camera 1.

  In the vicinity of the focus operation ring 10 on the outer peripheral surface of the lens barrel main body 50, a concave portion (first three-dimensional shape portion) for clarifying the relationship between the rotation direction of the focus operation ring 10 and the focus state (optical state). 15 and a convex portion (second three-dimensional shape portion) 17 are provided. A focus index 14 is attached between the concave portion 15 and the convex portion 17 by printing or the like. The focus index 14 is provided immediately above the lens barrel body 50. The focus index 14, the concave portion 15, and the convex portion 17 are arranged so as to be aligned in the circumferential direction, but the interval between the focus index 14 and the concave portion 15 is wider than the interval between the focus index 14 and the convex portion 17.

  A plurality of distance scales (displays) 11 to 13 composed of characters and symbols for displaying the current focus state are attached to the outer peripheral surface of the focus operation ring 10 by printing or the like along the circumferential direction. Yes. In FIG. 1, the distance scale 12 indicated by the focus index 14 attached to the lens barrel main body 50 indicates the current shooting distance (current focus state). Further, a concave portion (third three-dimensional shape portion) 16 is formed in the vicinity of one distance scale 11 (indicating infinite end) of the distance scale located at both ends of the three distance scales 11 to 13, and the other A convex portion (fourth three-dimensional shape portion) 18 is formed in the vicinity of the distance scale 13 (display indicating the closest end).

  Further, a knurling 10k is formed on the outer peripheral surface of the focus operation ring 10 to prevent slipping when the focus operation ring 10 is manually rotated.

  Two convex portions (first three-dimensional) that clarify the relationship between the rotation direction of the zoom operation ring 20 and the zoom state (optical state) in the vicinity of the zoom operation ring 20 on the outer peripheral surface of the lens barrel body 50 A shape portion) 25 and two convex portions (second three-dimensional shape portion) 27 are provided. A zoom index 24 is formed between the two convex portions 25 and the two convex portions 27. The zoom index 24 is provided immediately above the lens barrel body 50. The two convex portions 25, the two convex portions 27, and the zoom index 24 are arranged so as to be aligned in the circumferential direction. The two convex portions 25 are located on the wide side, and the two convex portions 27 are located on the tele side. The interval between the two convex portions 25 located on the wide side is wider than the interval between the two convex portions 27 located on the telephoto side.

  A plurality of zoom scales (displays) 21 to 23 composed of characters for displaying the current zoom state are attached to the outer peripheral surface of the zoom operation ring 20. A zoom scale 22 indicated by a zoom index 24 attached to the lens barrel main body 50 indicates the current focal length (current zoom state). In addition, two convex portions (third three-dimensional shape portions) are located near one zoom scale 21 (display indicating the wide end) of the zoom scales 21 and 23 located at both ends of the three zoom scales 21 to 23. 26 is formed, and two convex portions (fourth three-dimensional shape portions) 28 are formed in the vicinity of the other zoom scale 23 (display indicating the tele end). The interval between the two convex portions 26 formed in the vicinity of the zoom scale 21 indicating the wide end is wider than the interval between the two convex portions 28 formed in the vicinity of the zoom scale 23 indicating the tele end.

  Further, a knurling 20k is formed on the outer peripheral surface of the zoom operation ring 20 in order to prevent slipping when the zoom operation ring 20 is manually rotated.

  Next, an operation method of the focus operation ring 10 and the zoom operation ring 20 will be described.

  When the lens barrel 2 is attached to the camera 1, the camera 1 is generally held with the right hand, the lens barrel 2 is supported with the left hand, and the focus operation ring 10 and the zoom operation ring 20 are operated with the left hand finger.

  First, the focusing operation will be described. When the photographer is looking through the viewfinder (not shown) of the camera 1, for example, when the subject to be focused is at a position farther than 5 m, the photographer touches the concave portion 15 with the finger of the left hand, so that the tactile sensation is infinite. You can know the direction of rotation. Accordingly, the focus operation ring 10 is rotated clockwise as viewed from the photographer to switch the focus position from 5 m to infinity, and quickly and accurately focus without looking at the distance scales 11 to 13 indicated by the focus index 14. Can do. On the other hand, when the subject to be focused is at a position closer than 5 m, the photographer can know the rotation direction on the closest side by touching the convex portion 17 with the finger of the left hand. Therefore, the focus operation ring 10 is rotated counterclockwise when viewed from the photographer to switch the focus position from 5 m to the closest side, and focus quickly and accurately without looking at the distance scales 11 to 13 indicated by the focus index 14. Can be combined.

  Even in the case of the lens barrel 2 without the distance scales 11 to 13, if there are the concave portions 15 and 16 and the convex portions 17 and 18, the photographer is looking into the viewfinder of the camera 1 and the infinity end side. Since the rotation direction on the near end side is known, focusing can be performed quickly and accurately.

  Further, even in the case of the lens barrel 2 without the distance scales 11 to 13, the concave portion 16, and the convex portion 18, the photographer is looking into the viewfinder of the camera 1 as long as the concave portion 15 and the convex portion 17 are present. Since the rotation direction on the infinite end side and the closest end side is known, focusing can be performed quickly and accurately.

  Next, the zoom operation will be described. When the photographer is looking through the viewfinder (not shown) of the camera 1 and wants to fit a wider range on the screen, for example, the photographer touches the two convex portions 25 located on the wide side with the finger of the left hand. You can know the direction of rotation on the wide side. Accordingly, the zoom operation ring 20 is rotated clockwise as viewed from the photographer to switch the focal length to the wide side, and the focal length is adjusted quickly and accurately without viewing the zoom scales 21 to 23 indicated by the zoom index 24. be able to. On the other hand, when the user wants to narrow the screen to a narrower range, the photographer can know the rotation direction on the tele side by touching the two convex portions 27 located on the tele side with the finger of the left hand. Accordingly, the zoom operation ring 20 is rotated counterclockwise as viewed from the photographer to switch the focal length to the tele side, and the focal length can be quickly and accurately determined without looking at the zoom scales 21 to 23 indicated by the zoom index 24. Can be matched.

  Even in the case of the lens barrel 2 without the zoom scales 21 to 23, if there are two convex portions 25 and 26 located on the wide side and two convex portions 27 and 28 located on the tele side, photographing is performed. Since the rotation direction of the wide end side and the tele end side can be known while the person is looking into the viewfinder of the camera 1, the focal length can be adjusted quickly and accurately.

  Further, even in the case of the lens barrel 2 without the zoom scales 21 to 23, the two convex portions 26 located on the wide side, and the two convex portions 28 located on the tele side, the two convex portions located on the wide side are provided. If the photographer is looking through the viewfinder of the camera 1, the wide end side and the tele end side can be recognized as long as the projection 25 is located on the telephoto side, and the focal length can be adjusted quickly and accurately. it can.

  According to this embodiment, since the photographer can see the rotation direction of the focus operation ring 10 and the zoom operation ring 20 and the current optical state while looking through the viewfinder, it is difficult to visually recognize the scales 11 to 13 and 21 to 23. Even under circumstances, the focus operation ring 10 and the zoom operation ring 20 can be operated quickly and accurately.

  In addition, as a modification of the above-described embodiment, instead of the concave portions 15 and 16, a convex portion (a convex portion having a shape different from the convex portions 17 and 18) is provided, or the convex portions 17, 18, 25, 26, 27, and 28 are provided. Instead, a recess may be provided. The indicators 14 and 24 may be convex portions or concave portions. Moreover, it is good also considering the scales 11-13, 21-23 as a convex part (protrusion etc.) and a recessed part (marking etc.).

  FIG. 2 is a plan view of a state in which a lens barrel according to a modification of the first embodiment of the present invention is attached to a camera. The basic structure of the lens barrel of this modification and the lens barrel of the first embodiment is the same.

  However, this modification is the first in that the positional relationship between the infinite side and the near side of the focus operation ring 110 and the positional relationship between the wide side and the tele side of the zoom operation ring 120 are opposite to those of the first embodiment. It is different from the embodiment.

  According to this modification, the same effects as those of the first embodiment are obtained.

  FIG. 3 is a plan view of a state in which the lens barrel according to the second embodiment of the present invention is mounted on a camera. The same reference numerals are given to the parts common to the first embodiment, and the description thereof is omitted.

  This embodiment is different from the first embodiment in that the lens barrel 202 includes a display window 260 through which a distance scale 212 indicating the distance to the subject can be visually recognized.

  The lens barrel 202 includes a lens barrel body 250, a focus operation ring (adjustment operation ring) 210 for adjusting the focus, and an iris operation ring 220 for adjusting the iris (aperture value). The focus operation ring 210 and the iris operation ring 220 are rotatably provided on the outer peripheral surface of the lens barrel main body 250.

  A scale ring 240 that rotates integrally with the focus operation ring 210 is incorporated inside the lens barrel body 250. When the focus operation ring 210 rotates, the scale ring 240 rotates together with the focus operation ring 210. A distance scale 212 or the like is printed on the outer peripheral surface of the scale ring 240.

  A display window 260 is formed in the lens barrel main body 250 so that the photographer can visually recognize the scale ring 240. A cover made of a transparent member is fitted into the display window 260. The display window 260 is at a position directly above the lens barrel main body 250, and the photographer can easily see the scale (display) through the display window 260. The shapes of the concave portion (first three-dimensional shape portion) 215, the convex portion (second three-dimensional shape portion) 217, and the focus index 214 are the same as the concave portion 15, the convex portion 17, and the focus index 14, respectively, of the first embodiment. The same.

  In the vicinity of the iris operation ring 220 on the outer peripheral surface of the lens barrel body 250, a convex portion (first three-dimensional shape portion) 225 and a convex portion that clarify the relationship between the rotation direction of the iris operation ring 220 and the state of the iris. (Second three-dimensional shape portion) 227 are provided along the circumferential direction. The convex portion 225 is located on the side with the larger aperture value, and the convex portion 227 is located on the side with the smaller aperture value. The diameter of the convex portion 225 is smaller than the diameter of the convex portion 227. An iris index 224 is formed between the convex part 225 and the convex part 227. The iris index 224 is provided at a position directly above the lens barrel body 250. The convex portion 225, the convex portion 227, and the iris indicator 224 are arranged so as to be aligned in the circumferential direction.

  The iris operation ring 220 is provided with a plurality of scales (displays) 231 to 237 composed of numbers for displaying the iris state. The numbers given to the scales 231 to 237 are 22, 16, 11, 8, 5.6, 4 and 2.8, respectively. The scale indicated by the iris index 224 attached to the lens barrel body 250 indicates the current iris state (aperture value). Further, a convex portion (third three-dimensional shape portion) 226 is formed in the vicinity of one scale 231 of the scales 231 and 237 located at both ends of the plurality of scales 231 to 237, and a convex portion in the vicinity of the other scale 237. A (fourth three-dimensional shape portion) 228 is formed. The diameter of the convex portion 226 is smaller than the diameter of the convex portion 228.

  Since the operation method of the focus operation ring 210 and the iris operation ring 220 is the same as that of the first embodiment, the description thereof is omitted.

  According to this embodiment, since the photographer can see the rotation direction of the focus operation ring 210 and the iris operation ring 220 and the current optical state while looking through the viewfinder, it is difficult to visually recognize the scales 231 to 237. In addition, it is possible to quickly and accurately grasp the operation status of the focus operation ring 210 and the iris operation ring 220.

  2, 102, 202: Lens barrel, 10, 110, 210: Focus operation ring (adjustment operation ring), 11, 12, 13, 21, 22, 23, 111, 112, 113, 121, 122, 123, 212, 231, 232, 233, 234, 235, 236, 237: scale (display), 14, 24, 114, 124, 214, 224: index, 15, 115, 215: recess (first three-dimensional shape portion) ), 25, 125, 225: convex portion (first three-dimensional shape portion), 17, 27, 117, 127, 217, 227: convex portion (second three-dimensional shape portion), 16, 116: concave portion ( (Third three-dimensional shape portion), 26, 126, 226: convex portion (third three-dimensional shape portion), 18, 28, 118, 128, 228: convex portion (fourth three-dimensional shape portion), 20 , 120: Zoom operation ring Use operation ring), 50, 150, 250: the lens barrel main body, 220: iris operation ring (adjustment operation ring).

Claims (7)

In the lens barrel that is rotatably provided on the outer peripheral surface of the lens barrel main body and has an adjustment operation ring for adjusting the optical state of the lens barrel main body,
In the vicinity of the adjustment operation ring on the outer peripheral surface of the lens barrel main body, first and second three-dimensional shapes that clarify the relationship between the rotation direction of the adjustment operation ring and the optical state are provided. A lens barrel characterized by being provided.   The lens barrel according to claim 1, wherein an index indicating a current optical state is provided between the first and second three-dimensional shape portions. A plurality of displays for displaying the optical state is provided on the outer peripheral surface of the adjustment operation ring at predetermined intervals in the circumferential direction,
3. The third and fourth three-dimensional shapes indicating the optical state are respectively provided in the vicinity of the displays located at both ends of the plurality of displays. Lens barrel.   The adjusting operation ring is for adjusting a focus position, and the first three-dimensional shape portion is a concave portion or a convex portion located on the infinite side of the adjusting operation ring, and the second three-dimensional shape is provided. The lens barrel according to any one of claims 1 to 3, wherein the shape portion is a concave portion or a convex portion located on the closest side of the adjustment operation ring.   The adjustment operation ring is a focus operation ring that adjusts a focus position, and the third three-dimensional shape portion is a concave portion or a convex portion that is positioned in the vicinity of a display that indicates an infinite end of the plurality of displays, The lens barrel according to claim 3, wherein the fourth three-dimensional shape portion is a concave portion or a convex portion located in the vicinity of a display indicating a closest end of the plurality of displays.   The adjustment operation ring is for adjusting a focal length, and the first three-dimensional shape portion is two convex portions located on the wide side of the adjustment operation ring, and the second three-dimensional The shape portion is two convex portions located on the tele side of the adjusting operation ring, and the interval between the two convex portions located on the wide side of the adjusting operation ring is the distance between the two convex portions located on the tele side. The lens barrel according to claim 1, wherein the lens barrel is wider than the interval.   The adjustment operation ring is a zoom operation ring for adjusting a focal length, and the third three-dimensional shape portion is two convex portions positioned in the vicinity of a display indicating a wide end of the plurality of displays, The fourth three-dimensional shape portion is two protrusions positioned in the vicinity of the display indicating the tele end of the plurality of displays, and the interval between the two protrusions positioned in the vicinity of the display indicating the wide end 4. The lens barrel according to claim 3, wherein is wider than an interval between two convex portions located in the vicinity of the display indicating the tele end.

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