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Structure and components of camera lens
Publication time:6/20/2024 1:58:58 PM
Source：
Joney Technology Co.,Ltd
DO lens
If the refractive index of light passing through the lens changes, it will lead to color bleeding (color difference), resulting in a decline in image quality. In order to compensate it, it is necessary to combine multiple convex mirrors and concave mirrors to cancel it. Therefore, the original telephoto lens and zoom lens need to use multiple lenses, resulting in a large lens volume. Canon took the lead in developing "DO(Diffractive Optics) lenses" for cameras, which successfully solved these problems.
Super UD lens /UD mirror
UD(Ultra Low Dispersion= Ultra Low Dispersion) lens developed by Canon is an optical lens with low refraction and low dispersion. Two UD lenses can obtain almost the same high-performance optical characteristics as a fluorite lens.
In order to determine the range of the subject and facilitate the shooting and composition, cameras should be equipped with viewfinders. The viewfinder of modern cameras also has the functions of ranging and focusing.
Shutter and aperture
In order to adapt to different subjects with different brightness and darkness, and to obtain the correct exposure on film, it is necessary to control the length of exposure time and the intensity of light entering the lens. So the camera must set the shutter to control the exposure time, and set the aperture to control the light quantity by adjusting the aperture size.
Film feeding counting mechanism
In order to prepare for the second shooting, the exposed film needs to be pulled away and the unexposed film needs to be pulled over, so modern cameras need a film conveying mechanism. In order to indicate the number of films taken, a counting mechanism is needed.
fuselage
It is not only the camera's black box, but also the combination of various components of the camera. The most basic components of a camera can be represented by a block diagram.
In fact, as far as the basic function of the camera is concerned, whether it is an early "silver camera" or a camera that has been highly electronic, automated and computerized, its basic principle is not much different.
If the refractive index of light passing through the lens changes, it will lead to color bleeding (color difference), resulting in a decline in image quality. In order to compensate it, it is necessary to combine multiple convex mirrors and concave mirrors to cancel it. Therefore, the original telephoto lens and zoom lens need to use multiple lenses, resulting in a large lens volume. Canon took the lead in developing "DO(Diffractive Optics) lenses" for cameras, which successfully solved these problems.
Super UD lens /UD mirror
UD(Ultra Low Dispersion= Ultra Low Dispersion) lens developed by Canon is an optical lens with low refraction and low dispersion. Two UD lenses can obtain almost the same high-performance optical characteristics as a fluorite lens.
In order to determine the range of the subject and facilitate the shooting and composition, cameras should be equipped with viewfinders. The viewfinder of modern cameras also has the functions of ranging and focusing.
Shutter and aperture
In order to adapt to different subjects with different brightness and darkness, and to obtain the correct exposure on film, it is necessary to control the length of exposure time and the intensity of light entering the lens. So the camera must set the shutter to control the exposure time, and set the aperture to control the light quantity by adjusting the aperture size.
Film feeding counting mechanism
In order to prepare for the second shooting, the exposed film needs to be pulled away and the unexposed film needs to be pulled over, so modern cameras need a film conveying mechanism. In order to indicate the number of films taken, a counting mechanism is needed.
fuselage
It is not only the camera's black box, but also the combination of various components of the camera. The most basic components of a camera can be represented by a block diagram.
In fact, as far as the basic function of the camera is concerned, whether it is an early "silver camera" or a camera that has been highly electronic, automated and computerized, its basic principle is not much different.
