What is the function of a zoom lens? A. To protect the camera B. To change the focus distance C. To hold the camera steady D. To filter the light 相关知识点: 试题来源: 解析 B。选项 A“To protect the camera”是保护相机,通常是相机壳等的功能,不是变焦镜头的功能。选项 B“To chang...
It provides an implementation of the zoom lens system is compact and high zoom ratio. 变焦透镜系统包括四个透镜组,从物侧起依次是:具有正折射光焦度的第一透镜组,具有负折射光焦度的第二透镜组,具有正折射光焦度的第三透镜组和具有正折射光焦度的第四透镜组. The zoom lens system comprises four lens...
The zoom lens arranged in order from the object side having positive refractive power of the first lens group (G11), has a negative refractive power of the second lens group (G12), a third lens group of positive power (G13), has positive power of the fourth lens group (G14), it ...
Define zoom lenses. zoom lenses synonyms, zoom lenses pronunciation, zoom lenses translation, English dictionary definition of zoom lenses. n. A camera lens whose focal length can be rapidly changed, allowing rapid change in the size of an image. America
A zoom lens system discloses a zoom lens system which is small in size and exhibits favorable optical performance. The zoom lens system, according to the present invention includes, in order from the front to the rear: a first lens unit having negative optical power; a second lens unit havi...
The present invention provides a zoom lens that suppresses the generation of unnecessary light and is suitable for a projection lens. The zoom lens is used as a projection lens of a projector in which a prism is located between the projection lens and a spatial optical modulating element B. ...
Zoom lens and camera with the same The zoom lens is capable of providing a high zoom ratio and a reduced thickness, and can be retracted into the camera body in a retractable bent-type zoom lens mechanism easily configurable. The zoom lens comprises, in order from the obj... 和田健 被引...
United States Patent US8724232 Note: If you have problems viewing the PDF, please make sure you have the latest version ofAdobe Acrobat. Back to full text
United States Patent US8958161 Note: If you have problems viewing the PDF, please make sure you have the latest version ofAdobe Acrobat. Back to full text
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