A high-resolution day and night fisheye lens and its focusing method
A high-resolution, fish-eye lens technology, applied in the optical field, can solve the problems of uneven lens performance indicators, affecting edge picture clarity, and insufficient edge resolution, achieving compact structure, compact structure design, and light weight.
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0026] Such as Figure 1~2 As shown, the embodiment of the present invention provides a high-resolution day and night dual-purpose fisheye lens, the optical assembly of the lens includes a front group A of lens groups with negative refractive power arranged in sequence along the incident direction of light from left to right And a lens group with a negative refractive power, the rear group B; the front group A is provided with a negative meniscus lens A-1 (1), a plastic aspheric lens A-2 (2), and a positive curved lens from left to right. Crescent lens A-3 (3), the rear group B is provided with a plastic aspheric lens B-1 (4) and a double concave lens cemented group B-2 (5) from left to right, the negative meniscus Lens A-1 (1), plastic aspheric lens A-2 (2), positive meniscus lens A-3 (3), plastic aspheric lens B-1 (4) and a double-concave le...
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