18635352. IMAGING LENS AND IMAGING APPARATUS simplified abstract (FUJIFILM Corporation)
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IMAGING LENS AND IMAGING APPARATUS
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Inventor(s)
IMAGING LENS AND IMAGING APPARATUS - A simplified explanation of the abstract
This abstract first appeared for US patent application 18635352 titled 'IMAGING LENS AND IMAGING APPARATUS
The imaging lens described in the patent application consists of three lens groups: a first group with negative refractive power, a second group with positive refractive power, and a third group with negative refractive power. During focusing, the first and third lens groups remain stationary while the second group moves along the optical axis. The first lens group includes a first-a negative lens and a first-b negative lens, while the second lens group includes an aperture stop that moves with the group during focusing.
- The imaging lens has a unique configuration with three distinct lens groups.
- The first and third lens groups do not move during focusing, providing stability to the image plane.
- The second lens group, which includes an aperture stop, moves along the optical axis to adjust focus.
- The specific arrangement of negative and positive lenses in each group contributes to the overall performance of the lens.
- This design allows for precise focusing and high-quality imaging results.
Potential Applications: - Photography lenses - Microscope lenses - Telescope lenses - Medical imaging devices
Problems Solved: - Precise focusing without compromising image quality - Stability of the image plane during focusing
Benefits: - High-quality imaging results - Improved focusing accuracy - Versatile applications in various optical devices
Commercial Applications: Title: Advanced Imaging Lens Technology for Enhanced Optical Devices This technology can be used in the development of high-performance camera lenses, medical imaging equipment, and scientific instruments. The precise focusing capabilities and stable image plane make it ideal for applications where image quality is crucial.
Questions about the technology: 1. How does the unique configuration of the lens groups contribute to the overall performance of the imaging lens? 2. What are the specific advantages of having an aperture stop that moves with the second lens group during focusing?
Original Abstract Submitted
The imaging lens consists of, in order from an object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group having a negative refractive power, and is configured such that, during focusing, the first lens group and the third lens group remain stationary with respect to an image plane, the second lens group moves in the direction of an optical axis, the first lens group includes a first-a negative lens and a first-b negative lens successively in order from a position closest to the object side, and that the second lens group includes an aperture stop that moves integrally with the second lens group during focusing.
