Vehicle Lamp Light Conversion Member for Aesthetic Appearance
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Solution Overview
Problem
Current vehicle lamps do not provide a realistic and aesthetically pleasing appearance.
Innovation Solution
A vehicle lamp design featuring a lamp housing and lens, an excitation light source emitting blue light, an optical member that converts this light into parallel light, and a light conversion member shaped to emit light in a predetermined pattern, with a red lens or outer red lens to enhance appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a conventional vehicle lamp structure is used, then the basic lighting function is achieved, but the appearance is not realistic or aesthetically pleasing
Solution Approach 1:
The lamp is divided into distinct functional modules: a light source unit with blue LEDs, a light conversion member with red phosphor material, and a lens member with specific refractive index. This segmentation allows each component to be optimized independently for its specific function while contributing to the overall aesthetic appearance through precise spatial arrangement and light control.
Solution Approach 2:
The patent utilizes parameter changes in material properties - specifically the refractive index of the lens member and the photoluminescence characteristics of the light conversion member. By carefully selecting and controlling these parameters, the lamp achieves superior light distribution and color rendering that enhances appearance without requiring complex structural modifications.
2Illumination intensity
If blue excitation light is used with a light conversion member, then red light emission is achieved, but the light distribution pattern may not be optimal
Solution Approach 1:
The lens member acts as an intermediary optical element between the light source unit and the external environment. With a refractive index of 1.4 or higher, it effectively controls and shapes the light emitted from the light conversion member, optimizing the light distribution pattern without requiring complex additional optical components.
Solution Approach 2:
The patent employs a composite optical system combining blue LED light sources, red phosphor light conversion material, and a specially formulated lens material with specific refractive index. This composite approach allows the system to achieve optimal light emission patterns by leveraging the complementary properties of each material rather than relying on a single complex component.
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 vehicle lamp achieves an excellent appearance by effectively converting blue excitation light into red light, which is then emitted in a pattern that enhances the lamp's aesthetic appeal.
Implementation Method 1
The present invention relates to a vehicle lamp that uses an inorganic or organic fluorescent material and photoluminescence to provide a good appearance
Implementation Method 2
an optical member that is disposed in the space to correspond to the excitation light source, receives excitation light emitted from the excitation light source, and emits parallel light or light close to parallel light
Data Source
Figure 1A~1C
Figure 2
Figure 3
AI summary
Provided is a vehicle lamp having an excellent appearance. By a holding member (inner housing and support part), an emission surface of an optical member faces a light emitting layer as a light emission surface of a light conversion member, and an excitation light source faces an incident surface of the optical member. Moreover, in a light emitting device of the vehicle lamp, the emission surface of the optical member is formed in a shape based on the shape of the light emitting layer as the light emission surface, and the excitation light source is disposed at a position based on the shape of the incident surface of the optical member.