Optical design of large-caliber large-aperture ultra-long-focus low-light level imaging lens
An optical design and large-aperture technology applied in the lens field to achieve the effect of improving picture quality
Active Publication Date: 2020-06-19
中科天极(新疆)空天信息有限公司
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The invention discloses an optical design of a large-caliber large-aperture ultra-long-focus low-light level imaging lens. The lens comprises a main lens barrel, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens are sequentially arranged in the main lens barrel in the light incident direction, and the outer diameters of the lenses are sequentially decreased progressively. Parameters of the large-caliber ultra-long-focus low-light-level imaging lens are obtained through complex optical calculation and design, the focal length of the lens reaches 300 mm, and the lens can be matched with a 1-inch photosensitive chip. Practice proves that the low-light-level night vision imaging lens manufactured through the optical design is clear and sharp in effect, and meanwhile, the light transmittance of the lens is greatly improved, so that imaging equipment can shoot clear and bright images in an extremely weak environment, and the picture quality of dynamic and static monitoring at night is greatly improved.
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Property | Measurement | Unit |
Center thickness | 20.0 | mm |
Center thickness | 3.9 | mm |
Center thickness | 15.8 | mm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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