Add-on Anamorphic Lens with Adjustable Focus Group
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Solution Overview
Problem
Existing add-on anamorphic lenses require secondary focusing, which complicates the user experience and affects the shooting process.
Innovation Solution
An add-on anamorphic lens design featuring a focus group with spherical lenses and an anamorphic group with cylindrical lenses, where the position of the first lens is adjustable along the optical axis, allowing independent focusing from close range to infinity without involving the main lens, thereby simplifying the focusing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional add-on anamorphic lens is used, then anamorphic effect is achieved, but secondary focusing is required which complicates operation
Solution Approach 1:
The patent combines the focusing function and anamorphic function into a single integrated lens assembly. The focus group (first and second spherical lenses) and anamorphic group (third, fourth, and fifth cylindrical lenses) work together as one unit, eliminating the need for separate focusing operations on the main lens and add-on lens. This merging of functions resolves the contradiction by simplifying operation while maintaining the anamorphic effect.
Solution Approach 2:
The lens is divided into distinct functional groups: a focus group containing spherical lenses for focusing control, and an anamorphic group containing cylindrical lenses for the anamorphic effect. By segmenting the lens into these specialized groups with specific degrees of freedom, the patent enables independent optimization of each function while maintaining overall simplicity of operation.
2Productivity
If separate focusing of main lens and anamorphic lens is required, then focusing precision may be improved, but the number of adjustment steps increases
Solution Approach 1:
By merging the focusing and anamorphic functions into a single lens assembly with unified focusing control, the patent eliminates the time-consuming step of performing separate focusing adjustments. The user adjusts focus only once through the add-on lens, which simultaneously controls both the focus group and anamorphic group, thereby improving shooting efficiency and reducing time loss.
3Ease of operation
If integrated design of focus group and anamorphic group is implemented, then operation is simplified, but lens structure becomes more complex
Solution Approach 1:
The patent manages structural complexity through clear segmentation into functional groups with distinct lens elements (spherical vs. cylindrical) and specific optical axes. This structured segmentation allows for systematic design and assembly while maintaining operational simplicity, as each group has a dedicated function that works harmoniously with the others in the integrated assembly.
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
This design reduces the number of steps required for focusing, enhancing the convenience and efficiency of using the add-on anamorphic lens by allowing independent adjustment of the first lens, eliminating the need for secondary focusing.
Implementation Method 1
the focus group comprises a first lens and a second lens, wherein the first lens and the second lens comprise spherical lenses
Implementation Method 2
the anamorphic group comprises a third lens, a fourth lens, and a fifth lens, wherein the third lens, the fourth lens, and the fifth lens comprise cylindrical lenses
Data Source
AI summary
Aspects of the invention disclose an external and an add-on anamorphic lens, which comprises a focus group and an anamorphic group disposed in sequence from an object side to an image side along the optical axis. The focus group comprises a first lens and a second lens. The first lens and the second lens are spherical lenses. The anamorphic group includes a third lens, a fourth lens, and a fifth lens. These lenses are cylindrical lenses. The position of the first lens is adjustable and therefore solve the problem of requiring secondary focusing of the prior art.