Vehicular Lamp Lens With Grooved Central Portion
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Solution Overview
Problem
Conventional vehicular lamps with multiple LEDs for generating point light sources increase costs and energy consumption due to the need for each point light source to have a corresponding LED.
Innovation Solution
A lens design featuring an outer annular portion for a main light source and a central portion with grooves to focus light rays into point sources, reducing the number of required LEDs by using a single light source to create multiple point light sources through reflective and guiding elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LEDs are mounted to generate multiple point light sources, then the lighting effect is improved, but the cost and energy consumption increase
Solution Approach 1:
The lens is divided into two functional portions: an outer annular portion that generates a main light source and a central portion with grooves that generate point light sources. This segmentation allows a single LED to produce multiple distinct light sources through optical division rather than requiring multiple separate LEDs for each light source position.
Solution Approach 2:
The lens acts as an intermediary optical element between the single LED and the multiple light source positions. Through its specific geometry including the reflective face and grooves, the lens divides and redirects light rays to create multiple distinct light sources from one original light source, thereby reducing the number of required LEDs.
2Illumination intensity
If multiple LEDs are mounted to generate multiple point light sources, then the lighting effect is improved, but the component cost increases
Solution Approach 1:
The lens is divided into two functional portions: an outer annular portion that generates a main light source and a central portion with grooves that generate point light sources. This segmentation allows a single LED to produce multiple distinct light sources through optical division rather than requiring multiple separate LEDs for each light source position.
Solution Approach 2:
The lens acts as an intermediary optical element between the single LED and the multiple light source positions. Through its specific geometry including the reflective face and grooves, the lens divides and redirects light rays to create multiple distinct light sources from one original light source, thereby reducing the number of required LEDs.
3Use of energy by moving object
If a single light source is used to create multiple point light sources, then the cost and energy consumption are reduced, but the lighting effect may be compromised
Solution Approach 1:
The lens incorporates a reflective face with a conical or curved surface that redirects light rays to specific positions. This curved geometry enables the single light source to project light to multiple distinct locations, creating the appearance of multiple point light sources while maintaining adequate illumination intensity at each position through controlled light distribution.
Solution Approach 2:
The lens acts as an intermediary optical element between the single LED and the multiple light source positions. Through its specific geometry including the reflective face and grooves, the lens divides and redirects light rays to create multiple distinct light sources from one original light source, thereby reducing the number of required LEDs.
4Use of energy by moving object
If a single light source is used to create multiple point light sources, then the cost and energy consumption are reduced, but the lighting pattern customization is limited
Solution Approach 1:
The lens is divided into two functional portions: an outer annular portion that generates a main light source and a central portion with grooves that generate point light sources. This segmentation allows a single LED to produce multiple distinct light sources through optical division rather than requiring multiple separate LEDs for each light source position.
Solution Approach 2:
Different portions of the lens are designed with different optical properties: the outer annular portion has a reflective face optimized for generating a main light source, while the central portion contains grooves optimized for generating point light sources. This local differentiation enables a single light source to produce multiple distinct lighting patterns and effects.
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 design reduces component costs and energy consumption while providing a better lighting effect by eliminating hollow dark areas and allowing for customizable lighting patterns, suitable for various vehicular lamp applications.
Implementation Method 1
The light guiding portion includes a reflective face on an outer side thereof. Another portion of the light rays is adapted to be reflected to the central portion and to reach the plurality of grooves.
Data Source
AI summary
A lens for a vehicular lamp includes an outer annular portion and a central portion. The outer annular portion surrounds a central axis and includes an incident face on a rear thereof. The outer annular portion further includes a light guiding portion in front of the incident face. The light guiding portion includes a reflective face on an outer side thereof. The central portion is surrounded by the outer annular portion and is connected to the light guiding portion. The central portion includes front and rear faces. The front face includes an outer edge connected to the reflective face. The rear face includes a plurality of grooves. A portion of light rays from a light source entering the light guiding portion via the incident face transmits out of the lens via the reflective face. Another portion of the light rays is reflected to the central portion and reaches the grooves.