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lens aperture device

A technology of aperture and lens, applied in the direction of aperture, optics, optical components, etc., to achieve the effect of eliminating vibration or click sound, improving convenience and comfort, and eliminating bad situations

Active Publication Date: 2016-01-13
COSINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if only the tactile feeling can be eliminated without changing the operability (operating feeling), the user's convenience and comfort can be further improved, but the existing lenses cannot meet the above requirements.

Method used

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Examples

Experimental program
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Embodiment Construction

[0034] Next, best embodiments according to the present invention will be listed and described in detail based on the drawings. In addition, the drawings do not limit the present invention, but are for facilitating understanding of the present invention. Also, in order to avoid ambiguity of the invention, detailed descriptions of well-known parts are omitted.

[0035] First, in order to facilitate the understanding of the aperture device 1 according to the present embodiment, a general configuration of the lens L including the aperture device 1 is referred to figure 1 Be explained.

[0036] figure 1The lens L shown in , for example, is a replacement lens that can be used in a digital camera such as a single-lens reflex camera. Also, the assumed digital camera has a video camera function in addition to the single-lens reflex camera function.

[0037] In the lens L, reference numeral 2 denotes a lens barrel. The lens barrel 2 includes a fixed cylindrical portion 2c including...

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PUM

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Abstract

The present invention provides an aperture device for a lens, which includes: a striker mechanism portion, which is configured such that an engaging portion having an elastically supported engaging body is provided on one of a fixed cylinder portion and an aperture adjusting ring, and an engaging portion is provided on the other. There is an engaged base part, the engaged base part has an engaged surface, the engaging body is in pressure contact with the engaged surface, and the engaged surface is formed with a plurality of engaged parts. When the aperture adjustment ring rotates, the engaging body can engage with a plurality of engaged parts at positions corresponding to the aperture value; and a mode switching mechanism part, which changes the position of at least one of the engaging part and the engaged base part It is possible to switch between the strike mode and the non-strike mode, the strike mode is a mode in which the engaging body is pressed against the engaged surface, and the non-strike mode is released when the engaging body is separated from the engaged surface mode with the touch function enabled.

Description

technical field [0001] The present invention relates to an aperture device of a lens. The aperture device of the lens has a click mechanism capable of click-engaging an aperture adjustment ring at a position corresponding to a predetermined aperture value (with a click sound). Background technique [0002] Conventionally, there are known iris devices for lenses such as the aperture ring disclosed in Patent Document 1 and the click-stop device disclosed in Patent Document 2: the aperture device of the lens has an aperture ring and a click mechanism (mechanism with a click sound). ), the aperture adjustment ring can adjust the aperture by being mounted in the fixed cylinder in a manner that can be rotated relative to the fixed cylinder of the lens barrel, and the click mechanism enables the aperture adjustment ring to be in contact with multiple Tap the position corresponding to each aperture value to engage. [0003] The aperture adjusting ring described in Patent Document 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B9/07
CPCG02B5/005G03B9/02
Inventor 黑岩洋平佐藤和广
Owner COSINA CO LTD
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