OPTICAL LENS ASSEMBLY WITH WIDE FIELD OF VIEW

An optical lens assembly includes a first optical lens having opposing first and second major surfaces and facing a second lens having opposing third and fourth major surfaces. The second and third major surfaces face each other. The first through fourth major surfaces having respective sags, S1-S4,...

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Bibliographische Detailangaben
Hauptverfasser: Wong, Timothy L, Le, John D
Format: Patent
Sprache:eng
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Zusammenfassung:An optical lens assembly includes a first optical lens having opposing first and second major surfaces and facing a second lens having opposing third and fourth major surfaces. The second and third major surfaces face each other. The first through fourth major surfaces having respective sags, S1-S4, wherein each of the sags is defined by: (1) where c is 1/radius of curvature of the major surface, k is the conic constant of the surface, r is a distance from an optical axis, and a is an aspheric deformation constant. The first major surface includes a convex central portion surrounded by an annular concave outer portion, the second major surface is convex, the third major surface is substantially planar, and the fourth major surface is convex, wherein for r extending from about 1 mm to at least about 25 mm: −0.7≤S1/S2≤1-0.2≤S1/S4≤0.4.S=cr21+1-(1+k)⁢c2⁢r2+α2⁢r4+α3⁢r6+α4⁢r8Formula⁢(i)