18596299. OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS HAVING THE SAME simplified abstract (CANON KABUSHIKI KAISHA)
Contents
OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS HAVING THE SAME
Organization Name
Inventor(s)
TAKAHIRO Hatada of Tochigi (JP)
OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS HAVING THE SAME - A simplified explanation of the abstract
This abstract first appeared for US patent application 18596299 titled 'OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS HAVING THE SAME
The patent application describes an optical system with multiple lens units that move during focusing, satisfying a predetermined inequality.
- The optical system includes a first lens unit, a second lens unit, a third lens unit, a fourth lens unit, and a fifth lens unit.
- The second and fourth lens units move towards the object side during focusing.
- At least one of the second and fourth lens units includes multiple lenses.
- The first lens unit has negative lenses, while the second and fourth lens units have positive lenses.
- The system satisfies a predetermined inequality during operation.
Potential Applications: This technology could be used in cameras, telescopes, microscopes, and other optical devices that require precise focusing capabilities.
Problems Solved: The optical system addresses the challenge of maintaining image quality while focusing from infinity to close distances.
Benefits: Improved image quality, enhanced focusing capabilities, and increased versatility in optical system design.
Commercial Applications: This technology could be valuable in the consumer electronics industry for smartphone cameras, DSLR cameras, and other imaging devices.
Prior Art: Researchers interested in this technology may want to explore patents related to optical systems, lens units, and focusing mechanisms.
Frequently Updated Research: Researchers in the field of optics and imaging technology may be conducting studies on advanced lens designs, autofocus systems, and optical system optimization.
Questions about the technology: 1. How does the movement of lens units impact the overall performance of the optical system? 2. What are the potential challenges in implementing this technology in different types of optical devices?
Original Abstract Submitted
An optical system includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having positive refractive power, a third lens unit, a fourth lens unit having positive refractive power, and a fifth lens unit having negative refractive power. During focusing from infinity to a close distance, a distance between adjacent lens units changes and the second lens unit and the fourth lens unit move toward the object side. At least one of the second lens unit and the fourth lens unit includes two or more lenses. The first lens unit includes two or more negative lenses. A predetermined inequality is satisfied.
