Vehicular Lamp Optics With Single Condenser Lens Light Shaping
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Solution Overview
Problem
Vehicular lamps with multiple light guides have complex configurations, making it difficult to adjust light distribution on the light shielding member for a desired irradiation pattern.
Innovation Solution
A vehicular lamp design featuring a single condenser lens for two light sources arranged in a parallel direction, with a light shielding member having an irradiation slit, allowing for a simple configuration that achieves a desired light distribution with a single high light quantity area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light guides are used to guide light from multiple light sources onto the light shielding member, then the irradiation pattern can be brightened, but the configuration becomes complex and light distribution adjustment becomes difficult
Solution Approach 1:
The patent merges multiple light guides into a single light guide. The light shielding member is designed with a light guide portion that integrates the functions of multiple separate light guides, allowing light from multiple light sources to be guided through a single integrated structure rather than requiring multiple separate light guides
Solution Approach 2:
The light shielding member is designed to perform multiple functions: it shields light in certain directions, guides light through its light guide portion, and forms the desired irradiation pattern. This multi-functional design eliminates the need for separate dedicated light guiding components for each light source
2Illumination intensity
If multiple light guides are used to guide light from multiple light sources, then the irradiation pattern can be brightened, but light distribution adjustment on the light shielding member becomes difficult
Solution Approach 1:
By combining multiple light guiding functions into a single integrated light guide portion, the patent simplifies the adjustment process. Instead of adjusting multiple separate light guides individually, the single light guide portion can be adjusted as one unit to achieve the desired light distribution pattern
Solution Approach 2:
The light shielding member is designed with specific local structures including the light guide portion with predetermined shape and the light shielding portion. These localized structural features enable precise control of light distribution while maintaining overall configuration simplicity
3Device complexity
If a single condenser lens is used to condense light from multiple light sources, then the configuration is simplified, but achieving uniform light distribution with single high light quantity area becomes challenging
Solution Approach 1:
The light shielding member is designed with specific local structural features including the light guide portion with predetermined shape and the light shielding portion. These localized structures enable precise control of light distribution patterns, creating a single high light quantity area with uniform distribution while maintaining overall configuration simplicity
Solution Approach 2:
The patent optimizes specific parameters of the light shielding member including the shape, size, and position of the light guide portion and light shielding portion. By carefully adjusting these geometric parameters, the system achieves uniform light distribution with a single high light quantity area using only one condenser lens
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 design simplifies the configuration while maintaining a bright and uniform irradiation pattern with suppressed light irregularities, allowing for easier adjustment and effective light distribution on the light shielding member.
Implementation Method 1
a single condenser lens for condensing light emitted from the first light source and the second light source
Implementation Method 2
a projection lens for projecting light passed through the light shielding member to form an irradiation pattern
Data Source
AI summary
To provide a vehicular lamp capable of making a desired light distribution on a light shielding member while having a simple configuration. The vehicular lamp comprises a first and second light source each having a light emitting surface and being arranged in a predetermined parallel direction; a single condenser lens for condensing light emitted from the first and second light source; a light shielding member provided with an irradiation slit through which light condensed by the condenser lens is partially passed; and a projection lens for projecting light passed through the light shielding member to form an irradiation pattern. The first and second light source are arranged with an interval equal to or larger than dimensions in the parallel direction on the light emitting surfaces, the condenser lens makes a light distribution in which a high light quantity area with the highest light quantity is single in the parallel direction.