Drawing Lamp Shielding Plate for Clear Pattern Outlines
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Solution Overview
Problem
Existing vehicle drawing lamps struggle to form clear drawing light distribution patterns due to blurring and color unevenness caused by light reflection on the inner peripheral surface of the light shielding plate, which is exacerbated by increased plate thickness for rigidity.
Innovation Solution
A vehicle lamp configuration with a light shielding plate arranged along an inclined plane between the light emitting element and projection lens, featuring an opening with a specific surface shape that prevents light from entering the projection lens, reducing reflection and maintaining a clear outline shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the plate thickness of the light shielding plate is increased to prevent deformation, then the rigidity and structural stability are improved, but the light reflection on the inner peripheral surface increases causing blurring and color unevenness
Solution Approach 1:
The patent converts the harmful light reflection into a beneficial effect by designing the inner peripheral surface with a specific inclination angle. This angle directs the reflected light away from the projection lens, transforming the previously harmful reflection into a controlled optical path that prevents blurring and color unevenness while maintaining the necessary plate thickness for rigidity
Solution Approach 2:
The patent applies different surface characteristics to different regions of the light shielding plate. Specifically, the inner peripheral surface is given a distinct inclination angle different from the main plate surface, creating localized optical properties that control light reflection patterns without affecting the overall structural integrity and rigidity of the plate
2Stability of the object's composition
If the plate thickness is increased to ensure structural stability, then the opening shape deformation is prevented, but the ratio of reflected light increases blurring the outline shape
Solution Approach 1:
The patent converts the harmful light reflection into a beneficial effect by designing the inner peripheral surface with a specific inclination angle. This angle directs the reflected light away from the projection lens, transforming the previously harmful reflection into a controlled optical path that prevents blurring and color unevenness while maintaining the necessary plate thickness for rigidity
Solution Approach 2:
The patent applies different surface characteristics to different regions of the light shielding plate. Specifically, the inner peripheral surface is given a distinct inclination angle different from the main plate surface, creating localized optical properties that control light reflection patterns without affecting the overall structural integrity and rigidity of the plate
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 configuration effectively reduces blurring and color unevenness in the drawing light distribution pattern, ensuring a clear and effective warning function even with increased plate thickness, enhancing the lamp's ability to form distinct patterns.
Implementation Method 1
a light shielding plate for shielding part of light from a light emitting element to a projection lens is arranged between the light emitting element and the projection lens
Implementation Method 2
the ratio of light reflected on the inner peripheral surface of the light shielding plate in light emitted from the light emitting element increases
Data Source
Figure 1
Figure 2
Figure 3(a)~3(c)
AI summary
In a drawing lamp configured to form a drawing light distribution pattern, it is possible to achieve a configuration capable of forming a clear drawing light distribution pattern. A light shielding plate 40 for shielding part of light from a light emitting element 20 to a projection lens 30 is arranged between the light emitting element 20 and the projection lens 30, and an opening 42 penetrating the light shielding plate 40 is formed in a required region of the light shielding plate 40. With this configuration, the drawing light distribution pattern can be formed as a light distribution pattern corresponding to the opening shape of the opening 42. In this configuration, the inner peripheral surface 42a of the opening 42 has such a surface shape that light emitted from the light emitting center of the light emitting element 20 does not enter the projection lens 30. Thus, even if the plate thickness of the light shielding plate 40 is increased to such an extent that the opening shape of the opening 42 is not easily deformed, occurrence of color unevenness in an outline portion of the drawing light distribution pattern due to light reflection on the inner peripheral surface 42a of the opening 42 is effectively reduced.