Use of an additional optical element, a lens system and a camera system
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Solution Overview
Problem
The use of vintage camera lenses in modern recordings is hindered by poor optical condition and outdated parameters, requiring complex recalibration and potentially damaging interventions, and introduces flange focal distance changes that complicate focus adjustment.
Innovation Solution
An additional optical element with matched center thickness and positive optical power is inserted between the camera lens and image sensor, maintaining the flange focal distance and allowing for controlled aberrations without altering the camera lens's focus scale or requiring significant structural changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional optical elements are inserted between the camera lens and image sensor to generate aberrations, then vintage lens effects are achieved, but the flange focal distance changes and focus adjustment becomes complicated
Solution Approach 1:
The patent applies parameter changes by carefully selecting the optical power and center thickness of the additional optical element to achieve a net flange focal distance change of approximately zero. This allows the generation of vintage lens aberrations while maintaining the original focus scale and avoiding complicated focus adjustment procedures
Solution Approach 2:
The additional optical element acts as an intermediary component that introduces controlled aberrations into the optical path without fundamentally altering the camera lens system. It mediates between modern corrected lenses and the desired vintage look, providing the characteristic bokeh and optical imperfections without requiring actual vintage lenses
2Reliability
If camera lenses are deliberately adjusted out of their well-corrected state to produce aberrations, then vintage lens look is achieved, but major constructive intervention is required and the lens may be damaged
Solution Approach 1:
Instead of modifying the camera lens itself, the patent introduces an additional optical element as a mediator that produces the desired aberrations. This avoids major constructive intervention, potential damage to the original lens, and the need for specialized service technician involvement
Solution Approach 2:
The patent segments the optical correction function from the aberration generation function. The camera lens maintains its well-corrected state while the additional optical element separately introduces controlled aberrations, allowing easy insertion and removal without permanent modifications to the lens
3Reliability
If additional optical elements are inserted to change imaging characteristics, then aberrations are introduced, but the flange focal distance changes and the focus scale becomes distorted
Solution Approach 1:
The patent uses parameter changes by optimizing the combination of optical power and center thickness of the additional optical element. This specific parameter matching ensures that the flange focal distance remains substantially unchanged, preserving the focus scale accuracy while still generating the desired aberrations
Solution Approach 2:
The patent applies preliminary anti-action by pre-calculating and compensating for the flange focal distance change that would normally occur when adding an optical element. The additional element's parameters are selected in advance to counteract the expected distance change, thereby maintaining focus accuracy
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 reproduction of vintage lens effects with modern lenses by generating desired aberrations while preserving focus settings and mechanical integrity, allowing easy insertion and removal without damaging the camera lens.
Implementation Method 1
An additional optical element 11 with a positive optical power is used to influence an optical image 19 produced by a camera lens 13 on an image sensor 15 of a camera 17
Data Source
AI summary
An additional optical element with a positive optical power is used to influence an optical image produced by the camera lens on the image sensor by inserting the additional optical element between a camera lens and an image sensor of a camera, wherein the center thickness of the additional optical element and the optical power of the additional optical element are matched to one another in such a way that, for a predetermined diaphragm setting of the camera lens, a flange focal distance defined by the camera lens remains substantially unchanged by the insertion of the additional optical element.