High-Fidelity Lunar Phase Mechanism with FIFOP Optical Imaging
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Solution Overview
Problem
Existing mechanical watches and clocks suffer from inaccuracies in depicting the true shape and progression of the lunar terminator due to angle-dependent lunar phase displays, which are often distorted or misleading.
Innovation Solution
Utilizing a Fused Imaging Fiber Optic Plate (FIFOP) in conjunction with a rotating lunar model to generate a virtual two-dimensional image of the moon's illuminated and darkened regions, eliminating angular distortion and providing a high-fidelity, angle-independent lunar phase display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a rotating flat moon dial or bisected lunar sphere is used to display lunar phases, then the mechanism is simple and easy to manufacture, but the display accuracy and image fidelity deteriorate due to angular distortion and angle-dependency
Solution Approach 1:
A fixed transparent mask featuring a precise elliptical terminator is introduced as an intermediary element between the rotating moon dial and the viewer. This mask acts as a visual corrector that compensates for the angular distortion inherent in rotating sphere displays, maintaining accurate lunar phase representation across all viewing angles while preserving the mechanical simplicity of the rotating dial mechanism
Solution Approach 2:
The invention creates a two-dimensional elliptical copy of the three-dimensional terminator line that appears on the lunar surface. By projecting and fixing this elliptical shape onto a transparent mask, the system captures the essential visual characteristic of the lunar terminator without requiring complex three-dimensional mechanical adjustments, thereby achieving high display accuracy with simple manufacturing
2Manufacturing precision
If a three-dimensional bisected lunar sphere is used to replicate the moon's shape, then the visual realism is improved, but the display becomes angle-dependent and distorted when viewed from different positions
Solution Approach 1:
The invention introduces an asymmetric elliptical terminator shape onto the circular moon dial, rather than using a symmetric bisected sphere. This asymmetric elliptical mask is fixed and does not rotate with the moon dial, creating a visual correction that compensates for the symmetric rotation of the sphere below. The asymmetric ellipse ensures that the terminator line appears correct from any viewing angle, resolving the angle-dependency problem while maintaining visual realism
3Manufacturing precision
If complex optical systems with lenses are used to eliminate angular distortion, then the image fidelity is improved, but the device complexity and thickness increase
Solution Approach 1:
The invention extracts and removes the complex optical correction elements (lenses, prisms, and other refractive components) from the display system. Instead of using active optical elements to correct angular distortion, the solution employs a simple fixed transparent mask with an engraved or printed elliptical terminator. This extraction of complex optics achieves image fidelity through a passive, flat graphical correction layer, dramatically reducing device complexity and thickness
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 FIFOP system produces a visually accurate and technically elegant lunar phase indicator that maintains high image fidelity and aesthetic quality, reducing complexity and power consumption by using passive optical components.
Implementation Method 1
a Fused Imaging Fiber Optic Plate (FIFOP) formed from a bundle of optically aligned fibers... The FIFOP is configured to project a virtual image of the three-dimensional model to the viewing surface
Data Source
AI summary
A display device produces a view-independent virtual image of a three-dimensional object includes a three-dimensional model comprising at least two visually distinct regions. The device also includes a fused imaging fiber optic plate (FIFOP) formed from a bundle of optically aligned fibers. The FIFOP has a (i) a viewing surface formed by the polished output ends of the fibers; and (ii) a shaped cavity formed on the opposite side of the FIFOP. The cavity is defined by the input ends of the fibers and is dimensioned to receive the three-dimensional model in close proximity. The FIFOP is configured to transmit a virtual image of the three-dimensional model to the viewing surface such that the image appears substantially fixed and angle-independent to an observer.