Anamorphic Lens Cylindrical Group Design
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Solution Overview
Problem
Current professional anamorphic lenses are expensive and unsuitable for ordinary consumers due to their large size and weight, requiring manual editing to achieve cinematic widescreen ratios which sacrifices pixel quality.
Innovation Solution
An anamorphic lens design featuring a cylindrical lens group and an imaging group with specific optical power distributions, allowing for a compact, lightweight lens that maintains cinematic ratios without post-processing, featuring an oval-shaped out-of-focus flare and increased horizontal field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If professional anamorphic lenses are used to achieve cinematic widescreen ratios, then image quality and cinematic effect are improved, but the lens size and weight increase significantly
Solution Approach 1:
The lens is divided into two distinct groups: an anamorphic group with cylindrical lenses for width expansion and an imaging group with spherical lenses for focus and correction. This segmentation allows each group to be optimized independently, reducing overall weight while maintaining image quality.
Solution Approach 2:
The anamorphic lens combines multiple functions into a single optical system: it provides anamorphic expansion for widescreen ratios, maintains autofocus capability, and corrects optical aberrations. This multi-functionality eliminates the need for separate heavy professional lenses while achieving cinematic effects.
2Manufacturing precision
If professional anamorphic lenses are used to achieve cinematic widescreen ratios, then image quality is improved, but the lens cost increases significantly
Solution Approach 1:
By segmenting the lens into standard spherical imaging components and cylindrical anamorphic components, the design allows manufacturers to use conventional manufacturing processes for the spherical lenses while adding relatively simple cylindrical elements, reducing overall production cost compared to custom professional lenses.
Solution Approach 2:
The patent adapts and modifies existing lens design principles and configurations to create the anamorphic lens, rather than requiring entirely new proprietary designs. This approach to copying and adapting proven optical designs reduces development and manufacturing costs.
3Device complexity
If manual editing or digital cropping is used to achieve widescreen ratios, then lens complexity is reduced, but pixel quality is sacrificed
Solution Approach 1:
The lens performs the widescreen expansion optically before the image is captured, rather than requiring post-capture editing. This preliminary optical action preserves all original pixels while achieving the desired aspect ratio, eliminating the need for digital cropping that would sacrifice image quality.
4Weight of moving object
If compact lens design is implemented to reduce size and weight, then portability is improved, but optical performance may deteriorate
Solution Approach 1:
The segmented design with separate anamorphic and imaging groups allows for compact arrangement while maintaining optical performance. Each group can be optimized for its specific function, enabling reduced overall size without compromising the quality of either anamorphic expansion or image formation.
Solution Approach 2:
The patent merges the anamorphic function and imaging function into a single integrated lens assembly rather than requiring separate optical systems. This combination reduces overall size and weight while maintaining both anamorphic performance and imaging quality through careful optical design.
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 provides a compact, affordable anamorphic lens that maintains cinematic widescreen ratios without pixel sacrifice, increasing the horizontal field of view by 33% while keeping the vertical field unchanged, and includes unique optical characteristics like oval-shaped flares.
Implementation Method 1
a first lens, a second lens and a third lens which are cylindrical lenses... the second lens is a negative optical power cylindrical lens and the third lens is a positive optical power cylindrical lens
Implementation Method 2
an imaging group which includes spherical lenses... a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens
Data Source
AI summary
An anamorphic lens includes a cylindrical lens group arranged in a direction from an object side to an image side. The cylindrical lens group includes an anamorphic group and together form an imaging group. The anamorphic group includes a first lens, a second lens, and a third lens arranged in a direction of an object side to an image side. The second lens and the third lens may be joined together and the first lens may be a negative optical power biconcave cylindrical lens. Through the optical characteristics of the cylindrical lens in the anamorphic group, the entering horizontal light is compressed while the vertical light path maintains unchanged. The imaging group comprehensively corrects the light so that the horizontal field of view angle is increased by about 33% to achieve a magnification by 1.33 times for an anamorphic shooting.