Ao Ether Corporation

Ether Precision Inc.

Xiaoxiong Qiu

Jean-Pierre Lusinchi

Jianhua Wang

Wanghu Wu

A lens module () for image capture comprises a first positive meniscus lens () having a focal length Fand comprising a first convex optical surface () facing the object side (), and a second concave optical surface () facing the image side (), and a second positive meniscus lens () having a focal length Fand comprising a third concave optical surface () facing the object side (), and a fourth convex optical surface () facing the image side (). The four surfaces follow the equations: Zi=CURViYi/(1+(1&#x2212;(1&#x2212;Ki)CURViYi))+(Ai)Yi+(Bi)Yi+(Ci)Yi+(Di)Yiand Mi=1&#x2212;(1+Ki)(CURVi)(Ri)wherein: i is the surface number, Ki is the conic constant of the i-th surface, CURVi is the curvature of the i-th surface at the optical axis, Ai, Bi, Ci, and Di are aspheric coefficients of the i-th surface, and Ri is the effective radius of the aperture of the i-th surface. The following relations can be satisfied: 0.70&#x3c;F/F&#x3c;1.30 5&#x3c;M/M&#x3c;15.

Lens module for image capture

An optical module comprises: a first positive meniscus lens having a focal length Fand comprising a first convex optical surface facing an object side, and a second concave optical surface facing an image side; a second positive meniscus lens having a focal length Fand comprising a third concave optical surface facing the object side, and a fourth convex optical surface facing the image side. The four surfaces follow the curvature equation: Zi=CURViYi/(1+(1&#x2212;(1+Ki)CURViYi))+(Ai)Yi+(Bi)Yi+(Ci)Yi+(Di)Yiwith Mi=1&#x2212;(1+Ki)(CURVi)(Ri)where: i is the surface number, Ki is the conic constant of the i-th surface; CURVi is the curvature of the i-th surface at the optical axis; Ai, Bi, Ci, Di, are aspheric coefficients of the i-th surface; Ri is the effective radius of aperture of the i-th surface. The following relations are satisfied: 0.60&#x3c;F/F&#x3c;1.45, 2&#x3c;sqrt(M/M)&#x3c;7.

An optical module having an object side and an image side; the module comprising, from the object side to the image side: a first positive meniscus lens having a convergence C1, made of a material having a refractive index Nd1 and an Abbe number Vd1, a second negative meniscus lens having a convergence C2 made of a material having a refractive index Nd2 and an Abbe number Vd2, a third positive meniscus lens having a convergence C3, made of a material having a refractive index Nd3 and an Abbe number Vd3, a fourth negative lens having a convergence C4, made of a material having a refractive index Nd4 and an Abbe number Vd4, wherein: 1.1&#x3c;C1/C&#x3c;1.35 II C1/C2 II&#x3e;2 0.5&#x3c;C1/C3&#x3c;1.1 C1/Vd1&#x3c;&#x3c;5.2 II C2/Vd2 II&#x3c;7 II&#xe5;(Ci/Vdi)II&#x3c;4 with i=1 to 4.

Four-lens module for image capture

An optical module () comprises a positive meniscus lens () having a focal length Fand comprising a first convex optical surface () and a second concave optical surface (), and a plano-convex lens () having a focal length Fand comprising a third flat optical surface () and a fourth convex optical surface () from an object side () to an image side (). The curvatures of the four optical surfaces () are defined by the equation: Zi=CURViYi2/(1+(1+Ki)CURVi2Yi2)&#xbd;)+(Ai)Yi2+(Bi)Yi4+(Ci)Yi6+(Di)Yi8, and the two lenses are defined by 0.35&#x3c;F/F&#x3c;0.90, 0.30&#x3c;Conv2/Conv&#x3c;0.70, and 0.50&#x3c;M1/M2&#x3c;1.20; where: i is the surface number (i=1 to 4); for the i-th surface, Zi is the distance between a point on the aspheric surface at the height of Yi above the optical axis and a plane tangent to the aspheric surface at the intersection of the surface with the optical axis; Ki is the conic constant; CURVi is the curvature at the intersection of the surface with the optical axis with CURV3=0; Ai, Bi, Ci, Di are the aspheric coefficients of the 2nd, 4nd, 6nd and 8nd order with A3=0, B3=0, C3=0, D3=0; Ri is the effective radius of aperture; Mi=(1&#x2212;(1+Ki)(CURVi)2(Ri)2)&#xbd;; and Conv2 and Conv are the convergence of the second lens () and the complete lens module (), respectively.

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Suzhou, China

Xiaoxiong Qiu