Compound-Eye Aperture Blade Synchronization for Natural Image Superposition
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Solution Overview
Problem
Existing light-amount adjusting apparatuses with a compound-eyes optical system have limitations in achieving natural image superposition and effective blur effects due to the use of a small number of blade members, resulting in polygonal blur shapes with limited sides and phase inconsistencies between optical systems.
Innovation Solution
A light-amount adjusting apparatus with a drive unit controlling three or more blade members per opening/closing unit, ensuring equal angles between adjacent light striations across both optical systems, and synchronized aperture adjustments using a common drive mechanism to align phases and achieve consistent light striations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a small number of blade members (one or two) are used for each opening, then the device complexity is reduced, but the manufacturing precision of the blur shape deteriorates (polygonal shape with limited sides)
Solution Approach 1:
The patent divides the blade members into two separate groups: a first group forming a first opening/closing unit and a second group forming a second opening/closing unit. Each group independently controls an aperture, allowing the system to achieve complex blur shapes through the combined effect of multiple segmented aperture controls rather than requiring a single complex blade assembly.
Solution Approach 2:
The patent combines multiple aperture controls (first opening/closing unit and second opening/closing unit) into a unified light-amount adjusting apparatus. By merging the functionality of multiple blade member groups and coordinating their phase relationships, the system achieves superior blur shape precision that would be impossible with a single small group of blade members.
2Device complexity
If blade members are arranged to create polygonal blur shapes, then the device complexity is reduced, but the image quality deteriorates (phase inconsistency between optical systems)
Solution Approach 1:
The patent introduces asymmetric phase relationships between the first and second opening/closing units. By deliberately setting specific phase differences between the blade members of different groups, the system optimizes the light striation patterns to achieve natural-looking blur effects that maintain consistency when images are superimposed, resolving the phase inconsistency problem.
Solution Approach 2:
The patent changes the phase parameters of the blade members in the first and second opening/closing units to specific relationships. By adjusting these phase parameters, the system ensures that light striations from different optical systems align properly during image superposition, thereby improving image quality without increasing device complexity.
3Manufacturing precision
If multiple opening/closing units are used to improve light striation alignment, then the manufacturing precision of light striations is improved, but the device complexity increases
Solution Approach 1:
The patent designs the first and second opening/closing units to perform multiple functions simultaneously: they independently control light amounts for different optical systems, create coordinated aperture shapes, and generate phase-aligned light striations. This multi-functionality allows the system to achieve precise light striation alignment without proportionally increasing device complexity.
Data Source
AI summary
A light-amount adjusting apparatus includes a drive unit configured to drive blade members, a first opening/closing unit including three or more blade members to open and close at least a part of a first opening according to driving of the drive unit, and a second opening/closing unit including blade members as many as the blade members constituting the first opening/closing unit to open and close at least a part of a second opening according to driving of the drive unit. The first and second opening/closing unit are arranged so that in a case where images obtained by imaging using the first optical system and the second optical system are superimposed and all angles between adjacent light striations generated when the light passes through apertures formed by the first opening/closing unit and the second opening/closing unit are equal angles, all the angles between adjacent light striations fall within ±5 degrees.