Rear-View Mirror Optical Assembly With Aspherical Light Redirection
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Solution Overview
Problem
Existing light emitting diode (LED) based vehicle lamps face issues with directional light emission, leading to ineffective visual information provision for drivers and potential obstruction of the view of other vehicles, necessitating a solution to enhance light reflection and distribution.
Innovation Solution
An optical assembly with a light source module and an aspherical reflective surface that reflects surface light in a set direction, utilizing a housing with a recessed reflective portion and a transparent cover to control light emission, minimizing light loss and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a light emitting diode is used as a vehicle lamp, then power consumption is reduced, but the light emitting area is insufficient due to the small size of the LED
Solution Approach 1:
The patent segments the light emitting function by using multiple LEDs arranged in an array rather than relying on a single large LED. This allows each individual LED to maintain its energy efficiency while the collective array provides sufficient light emitting area for effective vehicle lighting
Solution Approach 2:
The patent transitions from point-source LED emission to surface light emission by arranging multiple LEDs in a two-dimensional array configuration. This dimensional expansion increases the effective light emitting area while maintaining the energy efficiency of individual LED components
2Area of stationary object
If light is emitted in various directions from the light emitting diode, then the light emitting area increases, but visual information is not effectively provided to the driver and may obstruct the view of other vehicles
Solution Approach 1:
The patent employs an aspherical reflective surface with a specifically designed curved geometry to redirect light emitted in various directions from the LED array into a controlled directional beam. This curved reflection surface focuses the scattered light toward the driver's position while preventing light from obstructing other vehicles' views
Solution Approach 2:
The patent applies directional control selectively by using the aspherical reflector to redirect light specifically toward the driver's position, while allowing light to be emitted in other directions without obstruction. This localized directional control ensures effective visual information delivery to the driver while minimizing interference with surrounding traffic
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 optical assembly improves luminous intensity and light uniformity, allowing controlled luminance distribution to enhance rear-view mirror functionality and reduce interference with other vehicles.
Implementation Method 1
an aspherical reflective surface that reflects the surface light in a set direction
Data Source
AI summary
The optical assembly disclosed in the embodiment of the invention includes: a lighting module having a resin layer and a light emitting device inside the resin layer, and having an exit surface for emitting surface light to one side; a reflective portion having a recess in a lower portion of the exit side of the lighting module and an aspherical curved surface at the bottom of the recess; and a transparent cover on the recess to reflect the surface light to a set region.