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Lens barrel

阅读:713发布:2023-11-24

专利汇可以提供Lens barrel专利检索,专利查询,专利分析的服务。并且This invention relates to a lens barrel having an interconnecting lever which is driven by the automatic exposure control mechanism provided in a camera body and in turn drives an diaphragm provided in the lens barrel; and a relatively long lens back. More particularly, this invention relates to a lens barrel being able to be shortened down from the length at the time of photographing at infinite distance, thus allowing compact housing of the lens barrel in a limited space.,下面是Lens barrel专利的具体信息内容。

1. A lens barrel comprising a. a focus ring having a first helicoid thread, b. a lens frame having a second helicoid thread engaging with said first helicoid c. guide means to guide said lens frame without any angular displacement upon operation of said focus ring, d. means for stopping said lens frame to define a position where said lens frame is located for infinite-distance-focusing, and e. a manually operable member for releasing said stopping means from the stopping state to make said lens frame movable beyond said position.
2. A lens barrel according to claim 1, further comprising means for moving said lens frame beyond said position.
3. A lens barrel according to claim 2, wherein said lens moving means is said focus ring.
4. A lens barrel according to claim 1, wherein said stopping means engage with said lens frame
5. A lens barrel according to claim 1, wherein said stopping means engage with said focus ring.
6. A lens barrel according to claim 1, wherein said stopping means are provided on any one of said focus ring and said lens frame and displaced to out of stopping state by said manually operable member.
7. A lens barrel according to claim 1, wherein said manually operable member is provided on said focus ring.
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