Anamorphic Lens Corrective Element for Digital Imager Blur
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Solution Overview
Problem
Anamorphic camera systems face issues with image blurring when used with digital cameras due to the optical low-pass filter and disproportionate magnification in digital image sensors, leading to reduced image quality in the dimension of anamorphic compression.
Innovation Solution
Incorporating a digital camera system with an anamorphic lens group, a powered lens group, and a corrective lens group positioned along the optical axis, which includes at least one anamorphic lens element to compress images and at least one corrective lens element to reduce blurring and equalize image quality in both horizontal and vertical dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If anamorphic lens elements are used to compress images in digital camera systems, then widescreen aspect ratios can be captured on sensors with smaller aspect ratios, but image blurring occurs in the dimension of anamorphic compression due to the optical low-pass filter and disproportionate magnification
Solution Approach 1:
The lens system is divided into distinct functional groups: anamorphic lens elements for compression, powered lens elements for focusing, and corrective lens elements for blurring compensation. This segmentation allows each group to be optimized for its specific function while working together to resolve the technical contradiction.
Solution Approach 2:
The corrective lens elements are specifically designed to address blurring in the anamorphic compression dimension (horizontal or vertical) without affecting the orthogonal dimension. This localized correction targets the specific problem area caused by the optical low-pass filter and disproportionate magnification.
2Manufacturing precision
If corrective lens elements are added to reduce blurring, then image sharpness and resolution improve, but device complexity increases
Solution Approach 1:
The corrective lens elements are integrated into the existing lens group structure, combining multiple functions (compression, focusing, and blurring correction) into a unified optical system. This merging approach adds necessary correction capabilities while maintaining a compact, integrated design rather than adding separate independent components.
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
The solution effectively reduces blurring and enhances image quality in digital cameras by using a corrective lens element to counteract the effects of the optical low-pass filter, achieving improved image sharpness and resolution, particularly in large format digital sensors.
Implementation Method 1
at least one anamorphic lens element configured to compress an image in a horizontal or vertical dimension
Implementation Method 2
at least one corrective lens element positioned between the at least one powered lens element and the digital image sensor, and configured to reduce a blurring of the image in the horizontal or vertical dimension on the digital image sensor
Data Source
AI summary
A digital camera comprising a digital image sensor and at least one corrective lens element configured to reduce a blurring of an image in a horizontal or vertical dimension on the digital image sensor. Preferably the digital image sensor is a large digital imager such as a Digital 65 imager.