Lens-Directed Illumination Through an Opening for Glare Reduction
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Solution Overview
Problem
Existing illumination apparatuses suffer from glare and uneven light distribution due to unintended reflection and scattering of light, which reduces the quality and efficiency of illumination.
Innovation Solution
The illumination apparatus incorporates a first lens optical system with a numerical aperture greater than the divergence angle of the light source, combined with a housing design that minimizes the visibility of the lens system and includes a light reducer to absorb or redirect scattered light, ensuring focused and high-quality light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light source emits light into an illumination space, then illumination is provided, but unintended reflection and scattering cause glare and uneven light distribution
Solution Approach 1:
A lens optical system is introduced as an intermediary between the light source and the illumination space. This lens system controls and directs the light paths, preventing unintended reflection and scattering while maintaining effective illumination. The lens acts as a mediator that shapes the light distribution to eliminate glare.
Solution Approach 2:
The numerical aperture of the lens optical system is specifically designed to be greater than the divergence angle of the light source. This parameter change optimizes the light collection and distribution characteristics, ensuring that light is directed precisely where needed while minimizing scattered light that causes glare.
2Illumination intensity
If a lens optical system is used to control light, then light distribution is improved, but the lens system becomes visible and may cause aesthetic or practical issues
Solution Approach 1:
A housing structure serves as an intermediary that conceals the lens optical system. The housing design allows the lens to perform its light control function while remaining aesthetically pleasing or imperceptible from certain viewing angles, thus resolving the conflict between functional visibility and aesthetic appearance.
3Area of stationary object
If light is emitted with a certain divergence angle, then the light covers a wider area, but reflection and scattering increase
Solution Approach 1:
By setting the numerical aperture of the lens optical system greater than the divergence angle of the light source, the system optimizes light collection within a controlled angular range. This parameter relationship ensures that light is distributed over the desired area while maintaining control over reflection and scattering, as the lens effectively manages the angular distribution of light paths.
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 reduces glare and improves the quality and efficiency of illumination by minimizing unintended reflection and scattering, providing a more comfortable and uniform lighting environment.
Implementation Method 1
The first lens optical system includes at least one first lens between the first emission portion and the opening in the housing on a path of the first light. The first lens optical system forms an image of the first light from the first emission portion on an imaginary image plane adjacent to the opening in the housing and causes the first light to be emitted through the opening.
Implementation Method 2
includes a light reducer to absorb or redirect scattered light
Data Source
AI summary
An illumination apparatus includes a housing, a first light source, and a first lens optical system. The housing includes an opening. The first light source includes a first emission portion to emit first light into an internal space of the housing. The first lens optical system includes at least one first lens between the first emission portion and the opening in the housing on a path of the first light. The first lens optical system forms an image of the first light from the first emission portion on an imaginary image plane adjacent to the opening and causes the first light to be emitted through the opening. An angle defining a numerical aperture of the first lens optical system is greater than a divergence angle of the first light from the first emission portion.