Vehicular Lamp Refractive Surface Tolerates Optical Misalignment
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Solution Overview
Problem
Conventional vehicular lamps with separate primary and secondary condensing optical systems suffer from positional deviations, leading to deteriorated appearance when light beams are outputted through a narrow emission surface, especially as the gap becomes narrower.
Innovation Solution
A vehicular lamp design featuring a first condensing optical system that condenses light beams, which are then refracted by an incident portion of a second condensing optical system with a refractive surface, ensuring the light beams are outputted within a condensing range even with positional deviations within a set tolerance, using a refractive surface that can be convex or inclined, and a diffusing portion to control light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If separate primary and secondary condensing optical systems are used, then the lamp can achieve light condensation and line-shaped projection, but positional deviations occur between the optical systems leading to deteriorated appearance
Solution Approach 1:
The patent combines the primary condensing optical system and secondary condensing optical system into a single integrated optical system. This merging eliminates the positional deviation issues that occur between separate components, while maintaining the light condensation and line-shaped projection capabilities. The integrated design ensures that the condensing points of light beams from multiple light sources align properly with the emission surface gap.
2Length of moving object
If the emission surface gap is made narrower, then the line-shaped projection becomes more refined, but positional deviations cause more remarkable appearance deterioration
Solution Approach 1:
By integrating the optical systems, the patent enables the use of narrower emission surface gaps without suffering from positional deviation issues. The unified optical system ensures consistent light condensation and proper alignment of condensing points, allowing the gap to be made narrower for refined line-shaped projection while maintaining appearance quality.
3Quantity of substance
If multiple light sources are arranged side by side, then the lamp can produce bundled light beams for line-shaped projection, but positional deviations cause misalignment of condensing points
Solution Approach 1:
The patent integrates the optical systems to handle multiple light sources arranged side by side. The unified optical system ensures that bundled light beams from multiple sources are properly condensed and aligned, with condensing points falling within the appropriate ranges on the emission surface, eliminating misalignment issues that occur with separate systems.
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 maintains a good appearance by ensuring the light beams are uniformly projected in a line shape from a narrow emission surface, even with positional deviations between the optical systems, enhancing the lamp's aesthetic and functional performance.
Implementation Method 1
the incident portion has a refractive surface configured to refract the respective bundles of light beams condensed by the first condensing optical system in a direction in which the respective bundles of light beams are condensed
Data Source
AI summary
A vehicular lamp includes: light sources; a first condensing optical system that condenses light beams from the light sources; and a second condensing optical system including an incident portion into which the condensed light beams by the first condensing optical system are incident, and an emission portion through which the incident light beams are outputted forward and which has a line-shaped emission surface. The incident portion has a refractive surface that refracts the light beams condensed by the first condensing optical system in a direction in which the light beams are condensed, and the refractive surface refracts the light beams so that condensing points of the light beams condensed by the first condensing optical system fall within a condensing range in which the light beams are outputted from the emission surface even when there is a positional deviation between the first and second condensing optical systems within a set tolerance.