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日期:2024-07-07
For lens to film distance in a camera, see Flange focal distance. The focal point F and focal length f of a positive (convex) lens, a negative (concave) lens, ......
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日期:2024-07-13
A lens is an optical device which transmits and refracts light, converging or diverging the beam. A simple lens consists of a single optical element. A compound ......
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日期:2024-07-11
In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge.[1] Although the focus is conceptually a point, physically the focus has a spatial extent, called the blur circle. Th...
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日期:2024-07-14
In optics, defocus is the aberration in which an image is simply out of focus. This aberration is familiar to anyone who has used a camera, videocamera, ......
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日期:2024-07-12
Introduction to focusing light: 1) Spherical surface refraction 2) Anatomy of a lens (and a mirror) 3) Focal length 4 ......
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日期:2024-07-10
How the Eye focuses light on the Retina. Explanation of Short and Long-sightedness....
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日期:2024-07-12
Quality and value are what define New Focus optics components. New Focus offers a wide variety of choices in Optical Mirrors, Aspherical Lenses, ......
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日期:2024-07-07
At New Focus™, you'll find a wide variety of high performance, reliable, easy to use electro-optic modulators. Some of the primary reasons why scientists and ......