New megapixels wide-angle lens
A wide-angle lens and pixel technology, applied in the field of wide-angle lens system, can solve the problems of unsuitable lens deformation, serious increase in distortion, heavy weight, etc., and achieve the effects of wide optical characteristics, weight reduction, and cost reduction.
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[0034] The embodiments of the present invention will be described in detail below in conjunction with the above-mentioned drawings.
[0035] New megapixel wide-angle lens, such as figure 1 As shown, it is particularly applied to a security monitoring imaging system with a field of view ≥80°. The optical lens includes a first lens element L1, a second lens element L2, a diaphragm r5, and a third lens element in order from the object side. L3, fourth lens element L4, fifth lens element L5, color filter GF, imaging surface IMA.
[0036] The first lens element L1 is a meniscus glass lens with negative refractive power, both sides are spherical, and convex toward the object; the second lens element L2 is a plastic with positive refractive power and both sides are aspherical Lenses; the third lens element L3 is a biconvex glass lens with positive refractive power and spherical surfaces on both sides; the fourth lens element L4 is a plastic lens with negative refractive power and biconc...
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