Optical System Lens Reflector Light Segmentation
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Solution Overview
Problem
Existing lighting systems, particularly those using reflector grids or TIR lenses, often cause abrupt increases in brightness when transitioning from a non-illuminated area to an illuminated area, leading to unpleasant visual effects due to strong differences in light emission directionality, making it difficult for observers to recognize the lamp's switched-on state from various viewing angles.
Innovation Solution
An optical system comprising a pot-like reflector with a diffusely reflective inner wall and a lens that directs a portion of light in a preferred direction while scattering a second portion laterally onto the reflector's inner wall, creating a diffused glow effect that makes the lamp recognizable from multiple angles, even when not directly illuminated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a lens directs light in a preferred direction with high directionality, then light emission efficiency in the desired area is improved, but abrupt brightness changes occur when transitioning from non-illuminated to illuminated areas
Solution Approach 1:
The light output is segmented into two distinct portions: a first portion directed in a preferred direction for efficient illumination, and a second portion scattered laterally to illuminate the reflector's inner wall. This segmentation allows each portion to serve a different function, resolving the contradiction between directionality and abrupt brightness changes.
Solution Approach 2:
Different regions of the light output are given different qualities: the first portion maintains high directionality for efficient light emission in the desired area, while the second portion is scattered to create a diffused glow effect on the reflector wall. This local differentiation resolves the contradiction by applying different optical properties to different parts of the light output.
2Manufacturing precision
If light is directed strongly in a specific direction, then illumination precision in the target area is improved, but the lamp becomes difficult to recognize from viewing angles outside the illuminated area
Solution Approach 1:
The reflector's inner wall acts as an intermediary element that is illuminated by the scattered second portion of light. This intermediary surface creates a diffused glow effect that makes the lamp recognizable from multiple viewing angles without compromising the precision of the primary light direction.
Solution Approach 2:
The patent utilizes the diffused glow effect on the reflector wall to create a visible indication of the lamp's switched-on state. This glow provides visual feedback that enhances lamp recognizability from various angles while maintaining the precision of the directed light beam.
3Ease of operation
If additional optical elements are added to direct light precisely, then light direction control is improved, but device complexity increases
Solution Approach 1:
The single lens performs multiple functions: it directs the first portion of light in a preferred direction for precise illumination and simultaneously scatters the second portion laterally to illuminate the reflector wall. This multi-functionality reduces the need for additional separate optical elements, thereby controlling device complexity while maintaining excellent light direction control.
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 solution allows for efficient light emission in a desired area while minimizing abrupt brightness changes, enabling observers to recognize the lamp's switched-on state from various viewing directions, thus reducing glare and allowing for smoother adaptation to illuminated areas.
Implementation Method 1
The lens is configured to emit a first portion of light emitted by the light source via a light exit aperture of the reflector in a preferred direction defined by the lens
Implementation Method 2
a lens that directs a portion of light in a preferred direction while scattering a second portion laterally onto the reflector's inner wall, creating a diffused glow effect
Data Source
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AI summary
The invention relates to an optical system for influencing the light output of a light source comprising a cup-like reflector (20), which has a light outlet opening (21), and comprising a lens (10), which is designed to radiate a first proportion of the light via the light outlet opening (21) of the reflector (20) in a preferred direction defined by the lens (10), wherein the lens (10, 60) is also configured to emit a second proportion of the light laterally in such a way that said proportion falls onto the reflector inner wall.