US Patent Application 18343184. CONVERTER LENS, INTERCHANGEABLE LENS, AND IMAGE CAPTURING APPARATUS simplified abstract
Contents
CONVERTER LENS, INTERCHANGEABLE LENS, AND IMAGE CAPTURING APPARATUS
Organization Name
Inventor(s)
Hiroki Ebe of Utsunomiya-shi (JP)
Shinichiro Saito of Utsunomiya-shi (JP)
CONVERTER LENS, INTERCHANGEABLE LENS, AND IMAGE CAPTURING APPARATUS - A simplified explanation of the abstract
- This abstract for appeared for US patent application number 18343184 Titled 'CONVERTER LENS, INTERCHANGEABLE LENS, AND IMAGE CAPTURING APPARATUS'
Simplified Explanation
The abstract describes a converter lens that can increase the focal length of a camera system. The lens consists of a front group with positive refractive power and a rear group with negative refractive power. The front group is made up of lenses that have the highest positive refractive power when combined in order from the lens closest to the object to the image side. The focal length of the front group, the converter lens, and the lateral magnification of the converter lens are determined appropriately when the converter lens is placed on the image side of a master lens.
Original Abstract Submitted
A converter lens according to an exemplary embodiment of the present invention is a converter lens that has a negative refractive power and increases a focal length of an entire system. The converter lens includes a front group having a positive refractive power and a rear group having a negative refractive power, and the front group is a lens unit having a combined refractive power having a maximum positive refractive power in a case where the combined refractive power is obtained by combining a refractive power of each lens in order from the lens closest to an object toward an image side. At this time, a focal length of the front group, a focal length of the converter lens, and a lateral magnification of the converter lens when the converter lens is disposed on an image side of a master lens are determined as appropriate.
