Rotatable Lens Aberration Correction for 3-CCD and Single-CCD Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lens devices face aberration issues when used across 3-CCD and single-CCD camera systems due to differences in design, particularly with color separation prisms and air gaps, requiring dedicated aberration correction lenses.
Innovation Solution
A lens device with an integrated aberration correction unit featuring rotatable optical elements that generate and cancel aberrations, allowing the same lens device to be used in both 3-CCD and single-CCD systems without inducing aberrations, through a combination of cylindrical lenses and a rotational drive unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a lens device designed for single-CCD type camera device is used in 3-CCD type camera device, then the lens device can be used in 3-CCD system, but an aberration is caused by the color separation prism
Solution Approach 1:
The patent applies preliminary anti-action by introducing an aberration correction unit that generates an aberration opposite to the one caused by the color separation prism. This corrective aberration is designed in advance to counteract the harmful effect, allowing the lens device to be used in both single-CCD and 3-CCD camera devices without suffering from the prism-induced aberration in either configuration
2Adaptability or versatility
If a lens device designed for 3-CCD type camera device is used in single-CCD type camera device, then the lens device can be used in single-CCD system, but an aberration is caused by the absence of a color separation prism
Solution Approach 1:
The aberration correction unit is designed to provide the opposite effect when the color separation prism is absent. By rotating the optical elements to a different position, the unit generates an aberration that compensates for the aberration caused by the absence of the prism, enabling the lens device to function properly in single-CCD systems
Solution Approach 2:
The patent employs dynamics by making the optical elements rotatable relative to each other about the optical axis. This rotational mechanism allows the lens device to dynamically adjust the aberration correction based on whether it is mounted on a 3-CCD or single-CCD camera device, switching between two distinct operational states to maintain optimal performance in both configurations
3Object-affected harmful factors
If a dedicated rear conversion lens is used to prevent aberration, then aberration correction is achieved, but a dedicated lens is required for each camera type
Solution Approach 1:
The patent implements universality by designing a single lens device that can function in both 3-CCD and single-CCD camera devices. The aberration correction unit with rotatable optical elements provides the necessary aberration compensation for both configurations, eliminating the need for separate dedicated lenses and reducing device complexity while maintaining aberration correction capability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the use of a single lens device across different camera systems without generating aberrations, ensuring clear video capture by automatically adjusting aberration correction based on the mounted camera type.
Implementation Method 1
a first optical element which generates a first aberration on light having passed through the lens device; a second optical element which generates a second aberration on the light having passed through the lens device
Data Source
AI summary
The first and second optical elements are held so as to be rotatable relative to each other about an optical axis. An aberration, which can cancel an aberration caused by a color separation prism, is generated from a synthesis of aberrations generated by the first and second optical elements in a case in which the second optical element is positioned at a first position with respect to the first optical element. The aberration generated by the first optical element is cancelled by the aberration generated by the second optical element in a case in which the second optical element is positioned at a second position with respect to the first optical element. The second optical element is positioned at the first position in a case in which the lens device is to be used in a 3-CCD type first camera device, and the second optical element is positioned at the second position with respect to the first optical element in a case in which the lens device is to be used in a single-CCD type second camera device.