Transparent Light Conductor for Vehicle Lamp Light Shaping

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Solution Overview

Problem

Traditional projection-type illumination systems for vehicle lamps suffer from wastage of optical energy, light leakage, and inefficient utilization of light due to the use of a light shielding plate, which results in uncontrolled stray light and reduced light effect.

Innovation Solution

A transparent light conductor with a light shielding function is introduced, featuring an optical stop structure, stepped upper and lower parts, and reflection surfaces to form a clear brightness-darkness cutoff line, allowing for the reuse of stray light in three ways to enhance light utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a light shielding plate with optical stop structure is used to form brightness-darkness cutoff line, then the light shape can be controlled, but optical energy is wasted and light utilization efficiency decreases

Engineering Contradiction:

Improvelight shape controlVSAvoidoptical energy waste

Core Design Contradiction:

Illumination intensityVSLoss of energy

Solution Approach 1:

The patent changes the material parameter of the light shielding plate from opaque to transparent, transforming it into a light conductor. This parameter change allows the component to both guide light formation and transmit light energy, resolving the contradiction between light shape control and optical energy waste

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The transparent light conductor serves multiple functions: it forms the brightness-darkness cutoff line, guides light paths, and allows light transmission. This multi-functionality eliminates the need for separate components and improves overall light utilization efficiency

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Illumination intensity

If a light shielding plate is used to shield light, then brightness-darkness cutoff line can be formed, but uncontrolled stray light is generated

Engineering Contradiction:

Improvebrightness-darkness cutoff lineVSAvoiduncontrolled stray light

Core Design Contradiction:

Illumination intensityVSObject-generated harmful factors

Solution Approach 1:

The transparent light conductor acts as an intermediary that controls light paths through refraction and reflection. It mediates between the light source and the optical system, directing light precisely while preventing uncontrolled stray light generation

Inventive Principle:

Principle #24Intermediary (Mediator)

3Illumination intensity

If light shielding plate is used for light shielding, then light path can be controlled, but light leakage between functional regions occurs

Engineering Contradiction:

Improvelight path controlVSAvoidlight leakage

Core Design Contradiction:

Illumination intensityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the mechanical light blocking approach with optical principles (refraction and reflection) through the transparent light conductor. This substitution enables precise light path control without the light leakage problems inherent in mechanical shielding

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Device complexity

If traditional light shielding plate is used, then simple structure is maintained, but light utilization efficiency is low

Engineering Contradiction:

Improvestructure simplicityVSAvoidlight utilization efficiency

Core Design Contradiction:

Device complexityVSLoss of energy

Solution Approach 1:

By changing the material parameter from opaque to transparent, the light conductor maintains the simple structural form while dramatically improving light utilization efficiency through light guiding and transmission functions

Inventive Principle:

Principle #35Parameter changes

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 transparent light conductor increases the utilization rate of incident light by redirecting and refracting light to form a clear brightness-darkness cutoff line, reducing uncontrolled stray light and improving the overall light effect.

Implementation Method 1

Another part of the incident light is irradiated to the incident surface 5b of the transparent light conductor 5 and refracted to the interior of the transparent light conductor 5

Methodology Applied

Scientific EffectRefraction: Refraction

Implementation Method 2

is then refracted to the lens 4 by the lower reflection surface 5e so as to form a third part G3 of the illumination light shape

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentUS11408577B2Transparent photoconductor having light shielding function, and application thereof

Publication Date: 2022.08.09 HASCO VISION TECHNOLOGY CO LTD

AI summary

A transparent light conductor (5) is provided with an optical stop structure (5a) and comprises an incident surface (5b), an exit surface (5c) and upper and lower reflection surfaces (5d, 5e); a part of incident light is irradiated to a reflection surface (2a) of a reflection mirror (2) and is directly reflected to a lens (4); another part of the incident light is irradiated to the incident surface (5b) of the transparent light conductor (5) and refracted to the interior of the transparent light conductor (5), and passes through the incident surface (5b), and then is refracted to the lens (4) by the exit surface (5c).