Anti-Glare LED Lens With Segmented Reflection Surface

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Solution Overview

Problem

Traditional lighting devices, such as halogen and incandescent lighting, suffer from high power consumption, inefficient light dispersion, and glare issues due to their design, while LED lighting apparatuses also face challenges in reducing glare despite their high luminance.

Innovation Solution

An LED module with a lens that includes an optical axis, light source recess, reflection surface, and critical reflection surface, which directs and controls light emission to minimize glare by using convex lenses to adjust beam width and redirect light away from direct eye exposure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If LED lighting apparatuses use high luminance to improve illumination effectiveness, then illumination quality is improved, but glare is increased

Engineering Contradiction:

Improveillumination effectivenessVSAvoidglare

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The lens is divided into multiple regions with different optical functions: a first lens portion for transmitting light and a second lens portion for reflecting light. This segmentation allows different parts of the lens to perform specialized functions, enabling the system to maintain high luminance while controlling glare through the reflective portion that redirects light away from direct eye exposure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the lens are assigned different optical properties. The first lens portion has light-transmitting characteristics while the second lens portion has light-reflecting characteristics. This local differentiation of optical quality allows the lens to simultaneously achieve high illumination effectiveness in certain directions while minimizing glare in others through selective light manipulation.

Inventive Principle:

Principle #3Local quality

2Object-affected harmful factors

If traditional halogen lighting uses metal shield in line sight to block direct light, then glare is reduced, but light dispersion efficiency is decreased

Engineering Contradiction:

Improveglare reductionVSAvoidlight dispersion efficiency

Core Design Contradiction:

Object-affected harmful factorsVSProductivity

Solution Approach 1:

Instead of using a metal shield that blocks light, the patent employs a lens as an intermediary optical element that actively manipulates light paths. The lens uses refraction and reflection to redirect light in controlled patterns, achieving glare reduction while maintaining or improving light dispersion efficiency compared to simple blocking methods.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the mechanical blocking approach (metal shield) with an optical system (lens with reflective and transmissive portions). This substitution transforms the glare control mechanism from passive obstruction to active optical manipulation, thereby improving light dispersion efficiency while still reducing glare.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Use of energy by moving object

If LED lighting apparatuses increase luminance to replace traditional lighting, then energy efficiency is improved, but anti-glare performance is worsened

Engineering Contradiction:

Improveenergy efficiencyVSAvoidanti-glare performance

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The lens design incorporates dynamic light control through its structured geometry with different lens portions. The optical system dynamically directs light based on the high luminance output of LEDs, channeling intense light where needed for energy efficiency while simultaneously steering it away from glare-prone areas, thus maintaining anti-glare performance despite high luminance operation.

Inventive Principle:

Principle #15Dynamics

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 reduces glare from high luminance LED lighting by controlling light emission patterns and beam widths, enhancing the overall lighting experience by minimizing direct light exposure to the eyes.

Implementation Method 1

a reflection surface crossing through the optical axis, and a critical reflection surface arranged in a spaced relationship with the optical axis

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 2

convex lenses to adjust beam width and redirect light

Methodology Applied

Scientific EffectRefraction: Refraction

Data Source

PatentUS9453622B2Lens and LED module having the same

Publication Date: 2016.09.27 NINGBO SELF ELECTRONICS CO LTD

AI summary

A lens includes an optical axis, a light source recess arranged through the optical axis, a reflection surface crossing through the optical axis, and a critical reflection surface which is arranged in a spaced relationship with the optical axis. The critical reflection surface is arranged between the light source recess and the reflection surface and receives the light from the light source recess and the reflection surface and reflects the light from the light source recess and the reflection surface towards the reflection surface. The emission light of the lens is light emitted forward of the light emitting surface which is reflected via the reflection surface and the critical reflection surface. Therefore, people cannot receive directly light emitted forward of the LED after it cross through the lens. In result, high luminance light from the LED is prevented from ripping into eyes, which achieve the aim of anti-glare.