| 摘要 |
A super wide angle optical system, according to various embodiments of the present invention, comprises: a first lens group having a negative refractive power, and a second lens group having a positive refractive power, in order from an object side; and a device for limiting the size of an aperture or light flux between the first lens group and the second lens group, wherein the first lens group comprises, in order, from the object: a plurality of meniscus lenses which are convex towards the object; a meniscus lens which is concave towards the object next to the meniscus lenses, wherein a lens, which is closest to an image in the first lens group, comprises a positive lens, and wherein the second lens group comprises a cemented lens in which lenses respectively having positive and negative refractive powers are bonded in order from the object side, wherein a lens, which is closest to an image in the second lens group has a positive refractive power. In addition, the super wide-angle optical system may be configured in various manners according to embodiments. |
