Bow Sight Fiber Optic Pin with Photochromic Light Regulation
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Solution Overview
Problem
Current fiber optic sights for bows face challenges in low light conditions, where pins are difficult to see, and in high light conditions, where the light projection is too intense, due to their design being mutually exclusive for optimal performance in either scenario.
Innovation Solution
A fiber optic sight with a light-responsive element that regulates light absorption and transmission based on ambient light conditions, using photochromic materials to maintain a consistent light output by changing transmissivity in response to light intensity and color, allowing for adjustable fiber length and diameter to optimize visibility without interfering with the target view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the fiber optic is made longer to gather more light, then light gathering capability is improved, but the size of the sighting end becomes larger which interferes with target viewing
Solution Approach 1:
The patent changes the physical parameters of the fiber optic, specifically using a shorter length and smaller diameter than conventional fiber optics, while compensating for the reduced light gathering area through the photochromic material that increases light absorption efficiency
Solution Approach 2:
The patent combines fiber optic material with photochromic material to create a composite structure that integrates light gathering, light transmission, and automatic light regulation functions into a single element
2Illumination intensity
If the fiber optic is tuned for low light conditions, then visibility in low light is improved, but light projection becomes too intense during high light conditions
Solution Approach 1:
The patent employs a photochromic material that automatically regulates its own light transmission properties in response to ambient light conditions, eliminating the need for external control mechanisms or batteries
Solution Approach 2:
The photochromic material dynamically changes its optical parameters (light absorption and transmission characteristics) based on the intensity of incident light, allowing the fiber optic to adapt to varying light conditions
3Illumination intensity
If the fiber optic diameter is increased to gather more light, then light gathering capability is improved, but the sighting end size becomes larger interfering with target view
Solution Approach 1:
The patent optimizes the diameter parameter of the fiber optic to a smaller value, compensating for the reduced light gathering cross-section through the enhanced light absorption properties of the photochromic material
Solution Approach 2:
The photochromic material is applied specifically to the fiber optic structure to enhance light gathering efficiency at the sighting end without requiring an increase in overall diameter
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 self-regulating fiber optic sight that maintains a consistent level of light output across varying light conditions, improving visibility and accuracy by automatically adjusting to ambient light levels, reducing the need for battery-powered illumination and minimizing interference with target viewing.
Implementation Method 1
A fiber optic sight with a light-responsive element that regulates light absorption and transmission based on ambient light conditions, using photochromic materials to maintain a consistent light output by changing transmissivity in response to light intensity and color
Data Source
AI summary
An improved sighting device is provided. The sight may be used on a bow or other device which is typically sighted on an object during use. The sight includes at least one light-gathering fiber-optic fiber having at least one end from which absorbed light may be transmitted for viewing by a user. The fiber-optic fiber includes an associated element that regulates the amount of light absorbed in inverse proportion to the impinging light intensity in an automatic manner providing a more constant light intensity output.