18706060. OPTICAL SYSTEM AND CAMERA MODULE COMPRISING SAME (LG INNOTEK CO., LTD.)
OPTICAL SYSTEM AND CAMERA MODULE COMPRISING SAME
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OPTICAL SYSTEM AND CAMERA MODULE COMPRISING SAME
This abstract first appeared for US patent application 18706060 titled 'OPTICAL SYSTEM AND CAMERA MODULE COMPRISING SAME
Original Abstract Submitted
The optical system disclosed in the embodiment of the invention includes first to seventh lenses disposed along an optical axis from an object side to a sensor side, the first lens has positive (+) refractive power on the optical axis, and the seventh lens has negative refractive power on the optical axis, an object-side surface of the first lens has a convex shape on the optical axis, and the sensor-side surface of the third lens has a minimum effective diameter among the first to seventh lenses. The sensor-side surface of the seventh lens has a maximum effective diameter among the first to seventh lenses, and may satisfy the following equations: 0.4<TTL/ImgH<3 and 1<CA_Max/CA_Min<5 (TTL (Total track length) is a distance on the optical axis from an apex of the object-side surface of the first lens to the upper surface of an image sensor, ImgH is ½ of the maximum diagonal length of the image sensor, CA_Max is the largest effective diameter among the effective diameters of the object-side and sensor-side surfaces of the first to seventh lenses, and CA_Min is the smallest effective diameter among the effective diameters of the object-side and sensor-side surfaces of the first to seventh lenses).
