Lamp Unit with Nested Inner Lenses for Compact Visibility
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Solution Overview
Problem
Conventional lamp units face a trade-off between visibility and compactness, as using small lamps results in reduced visibility and increased size when larger lamps are used to improve visibility.
Innovation Solution
The lamp unit incorporates a configuration with multiple inner lenses and light sources where the irradiation light from one light source illuminates the incident surface of another inner lens, ensuring sufficient visibility even with small light sources and allowing for a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If larger lamps are used to improve visibility, then visibility is improved, but the lamp unit size increases
Solution Approach 1:
The patent combines multiple inner lenses (first inner lens and second inner lens) within a single lamp unit housing. The first light source illuminates both the first inner lens and the second inner lens through continuous internal spaces, allowing the lamp unit to achieve enhanced visibility equivalent to larger lamps while maintaining a compact overall size. This merging of multiple optical components resolves the contradiction between visibility and size.
Solution Approach 2:
The patent implements a nested configuration where the first inner lens and second inner lens are positioned within the outer lens housing, with their internal spaces being continuous. The second inner lens is partially disposed within the irradiation range of the first light source, creating a nested optical path that maximizes light utilization within a compact volume, thereby improving visibility without increasing lamp unit size.
2Volume of moving object
If small lamps are used to reduce size, then lamp unit size is reduced, but visibility deteriorates
Solution Approach 1:
The patent utilizes the spatial dimension by creating continuous internal spaces between the first inner lens and second inner lens, allowing light to propagate through multiple dimensions within the compact housing. The second inner lens is positioned to be partially illuminated by the first light source, effectively using three-dimensional space optimization to achieve enhanced visibility from small light sources without increasing overall lamp unit size.
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
This configuration enhances visibility by widening the light emitting area while maintaining a compact size, integrating turn signal and position lamps effectively.
Implementation Method 1
a first light source that faces an incident surface of the first inner lens; and a second light source that faces an incident surface of the second inner lens
Implementation Method 2
irradiation light from each light source is emitted to the outside through the inner lens and the outer lens
Data Source
AI summary
A lamp unit in which an opening of a unit case is covered with an outer lens is provided. The lamp unit includes a first inner lens provided inside the outer lens, a second inner lens provided inside the outer lens, a first light source facing an incident surface of the first inner lens, and a second light source facing an incident surface of the second inner lens. A space inside the first inner lens and a space inside the second inner lens are continuous. At least a part of the incident surface of the second inner lens is disposed in an irradiation range of the first light source.