Illumination Lens System for Reflection and 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 within the housing, leading to reduced light efficiency and quality.
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 light reducer to minimize reflection and scattering, using absorbing films and recess-protrusion structures to enhance light quality and reduce glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light is emitted into the housing internal space, then the light source can illuminate the space, but unintended reflection and scattering occur causing glare and uneven light distribution
Solution Approach 1:
The patent introduces a lens optical system as an intermediary component between the light source and the housing internal 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 patent changes the optical parameters by using a lens system with a numerical aperture greater than the light source divergence angle. This parameter change enables the system to capture and redirect light more effectively, transforming the light distribution pattern from uneven with glare to uniform and controlled.
2Productivity
If a lens optical system with numerical aperture greater than divergence angle is used, then light efficiency and quality are improved, but the device structure becomes more complex
Solution Approach 1:
The lens optical system serves multiple functions simultaneously: it focuses light, controls numerical aperture, directs light paths, and prevents reflection and scattering. By consolidating these functions into a single optical component, the patent achieves high light efficiency without proportionally increasing device complexity.
Solution Approach 2:
The patent optimizes the lens parameters, specifically setting the numerical aperture greater than the light source divergence angle. This parameter optimization enables the lens to efficiently capture and direct light while maintaining a compact and manageable device structure.
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 achieves high-efficiency and high-quality light emission by minimizing glare and unevenness, ensuring a more comfortable and uniform illumination space.
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
using absorbing films and recess-protrusion structures to enhance light quality and reduce glare
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.