Canon kabushiki kaisha (20240255741). ZOOM LENS AND IMAGE PICKUP APPARATUS simplified abstract
Contents
ZOOM LENS AND IMAGE PICKUP APPARATUS
Organization Name
Inventor(s)
ZOOM LENS AND IMAGE PICKUP APPARATUS - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240255741 titled 'ZOOM LENS AND IMAGE PICKUP APPARATUS
The abstract describes a zoom lens with specific lens units that move during zooming, an aperture stop that also moves during zooming, and predetermined inequalities that are satisfied within the lens design.
- First positive lens unit fixed for zooming
- Second negative lens unit that moves during zooming
- At least two lens units that move during zooming
- Final positive lens unit fixed for zooming
- Aperture stop that moves during zooming, located closer to the image plane at the telephoto end
- Sub-lens units for focusing within the first lens unit
- Predetermined inequalities satisfied within the lens design
Potential Applications: - Camera lenses - Surveillance systems - Microscopes - Telescopes
Problems Solved: - Improved zooming capabilities - Enhanced image quality - Increased flexibility in focusing
Benefits: - Sharper images - Greater zoom range - Enhanced performance in various applications
Commercial Applications: - Camera manufacturing industry - Surveillance equipment companies - Telescope and microscope manufacturers
Questions about the technology: 1. How does the movement of the aperture stop during zooming affect image quality? 2. What advantages do the predetermined inequalities within the lens design provide?
Frequently Updated Research: - Ongoing advancements in lens technology - Research on improving zoom lens performance and capabilities
Original Abstract Submitted
a zoom lens includes, in order from an object side to an image side, a first positive lens unit fixed for zooming, a second negative lens unit that moves during zooming, at least two lens units that move during zooming, a final positive lens unit disposed closest to an image plane and fixed for zooming, and an aperture stop disposed between a lens surface closest to the image plane of the second lens unit and a lens surface closest to an object of the final lens unit, configured to move during zooming, and located closer to the image plane at a telephoto end than at a wide-angle end. the first lens unit includes a sub-lens unit disposed closest to the object in the first lens unit and fixed for focusing, and a sub-lens unit configured to move for focusing. predetermined inequalities are satisfied.
