Anti-glare Lamp Fixture Using Semi-Fresnel and Light-Control Microstructures
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Solution Overview
Problem
Conventional anti-glare structures for lamps suffer from reduced light efficiency and smaller lighting areas, failing to effectively prevent glare while maintaining uniform illumination.
Innovation Solution
An anti-glare desktop lamp featuring a semi-Fresnel microstructure and a light-control microstructure that diffuses and collimates light, controlling lighting direction and distribution without compromising light efficiency, utilizing a reflective surface and microstructures to enhance illuminance uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional anti-glare structures (reflective filter, reflective screen, optical chopper) are used, then glare is reduced, but light efficiency and lighting area are reduced
Solution Approach 1:
The patent divides the anti-glare function into two separate microstructure components: a semi-Fresnel microstructure for collimating light and a light-control microstructure for directing light. This segmentation allows each component to perform its specific function efficiently without the light losses associated with reflective filters and screens, thereby reducing glare while maintaining high light efficiency and lighting area.
2Object-affected harmful factors
If conventional anti-glare structures are used, then glare is reduced, but lighting area becomes smaller
Solution Approach 1:
By separating the collimating function (semi-Fresnel microstructure) from the light-direction control function (light-control microstructure), the patent achieves both glare reduction and maintained lighting area. The semi-Fresnel microstructure collimates light without reducing area, while the light-control microstructure directs light to appropriate areas, together providing anti-glare effect with full lighting coverage.
3Object-affected harmful factors
If reflective filter is used to convert polarization, then indirect glare is reduced, but light efficiency decreases due to light dissipation
Solution Approach 1:
The patent replaces the reflective filter mechanism (which relies on polarization conversion and causes light dissipation) with a microstructure-based optical control system. The semi-Fresnel and light-control microstructures manipulate light through geometric optics principles, achieving glare reduction without the energy losses inherent in polarization-based reflective filters.
4Object-affected harmful factors
If anti-glare structures are added to control lighting direction, then glare is prevented, but device complexity increases
Solution Approach 1:
The patent merges the semi-Fresnel microstructure and light-control microstructure into a single integrated light-control unit that is mounted directly on the lamp. This merging reduces device complexity compared to separate components, while the microstructures themselves provide the necessary optical control functions for glare prevention in a compact, unified design.
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 effectively prevents glare while improving light uniformity and efficiency, maintaining high light transmission and coverage without diminishing brightness.
Implementation Method 1
the semi-Fresnel microstructure is used for diffusing/collimating light of the light source
Implementation Method 2
the semi-Fresnel microstructure is used for diffusing/collimating light of the light source
Implementation Method 3
the light-control microstructure is used for controlling the resulting lighting angle for improving illuminance uniformity
Implementation Method 4
utilizing a reflective surface and microstructures to enhance illuminance uniformity
Data Source
AI summary
An improved lamp fixture with anti-glare function is disclosed, which comprises: a lamp; a light source; and a light-control unit, composed of a semi-Fresnel microstructure and a light-control microstructure; wherein the light source and the light-control unit are mounted on the lamp; and the semi-Fresnel microstructure is used for diffusing/collimating light of the light source while the light-control microstructure is used for controlling the resulting lighting angle. With the aforesaid lamp fixture, not only glare can be prevented, but also uniformity of the lamp fixture is improved.