High-light through high-definition fixed-focus aspheric lens
A fixed-focus lens and aspheric lens technology, applied in optics, optical components, instruments, etc., can solve the problems of increasing the light-receiving area of the lens, image deterioration, and increasing lens aberration, and achieve correction of light coma and image correction. Poor, strong corrective effect
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[0043] Such as figure 1 As shown, a Datong Guang high-definition fixed-focus aspheric lens, the lens includes a lens, a diaphragm 31 and a filter 32, the diaphragm 31 is located in the middle of the optical path of the lens, and the aperture of the diaphragm 31 is arranged on the central axis of the lens Above, the number of the lenses is six, respectively forming the entrance pupil group and the exit pupil group; the entrance pupil group is located on the entrance pupil side of the diaphragm 31, and its overall focal power is negative, and the lenses are arranged sequentially in the direction of the entrance pupil group optical path ( A1) 1, aspherical lens (A2) 2, lens (A3) 3, lens (A3) 3 is set close to the diaphragm 31; the exit pupil group is located on the exit pupil side of the diaphragm 31, and its overall refractive power is positive , the aspherical lens (B1) 21, convex lens (B2) 22 and concave lens (B3) 23 are arranged in sequence in the direction of the optical pat...
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