Optical Element Deflecting Surface Reducing Glare
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Solution Overview
Problem
Existing light-emitting arrangements produce a significant amount of stray light, leading to unwanted glare effects and increased UGR values.
Innovation Solution
An optical element with cell-like light entry regions and deflecting surface regions oriented at angles greater or less than 90° to the longitudinal axis, which deflects light beams and reduces glare by guiding them away from the main radiation direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If light is emitted through conventional optical elements, then light output is achieved, but stray light and glare effects increase leading to higher UGR values
Solution Approach 1:
The optical element is segmented into multiple cell-like light entry regions arranged in rows, with each region having its own deflecting surface. This segmentation allows independent control of light paths from different regions, enabling stray light from one region to be deflected without affecting the main light output from other regions, thus reducing overall glare while maintaining light output.
Solution Approach 2:
Different regions of the optical element have different surface properties - the light entry regions have deflecting surfaces with specific orientations angled relative to the longitudinal axis, while other regions maintain different characteristics. This local differentiation allows targeted deflection of stray light paths while preserving main radiation direction, reducing glare effects without compromising overall light output.
2Object-affected harmful factors
If deflecting surfaces are added to reduce glare, then UGR values decrease, but device complexity increases
Solution Approach 1:
The deflecting surfaces are merged into the light entry regions themselves rather than being separate components. The deflecting surface is integrated as part of the cell-like light entry region structure, combining the functions of light entry and stray light deflection into a single unified element, thereby reducing device complexity while achieving glare reduction.
Solution Approach 2:
The light entry regions serve multiple functions: they allow main light transmission while their deflecting surfaces simultaneously deflect stray light. This multi-functionality reduces the need for additional separate glare-reducing components, maintaining relatively simple device structure while achieving UGR reduction.
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 solution effectively reduces the risk of dazzling effects and glare, achieving a lower UGR value, thereby improving the classification and broadening the application range of the light-emitting arrangement.
Implementation Method 1
a deflecting surface region (5) is designed on said rear side (3) for the purpose of at least partially deflecting the light, wherein said deflecting surface region (5) extends parallel to and along the longitudinal axis (L) and comprises inclined surface regions (7)
Data Source
AI summary
The invention relates to an optical element for influencing a light that is emitted from a light source, said optical element extending along a longitudinal axis (L). The optical element comprises a front side which faces away from the light source, and a rear side (5) which faces said light source, a plurality of cell-like light entry regions (4) being designed on the rear side (5) in order for light to enter, and extending in a row along a straight line (G) that runs parallel to the longitudinal axis (L). In addition, a deflecting surface region is designed on said rear side (5) for the purpose of at least partially deflecting the light, said region being connected on a side next to said light entry regions (4) with respect to the straight line (G). A light exit region is designed on the front side such that light can at least partially exit. Said deflecting surface region extends along the longitudinal axis (L) and comprises surface regions (7) designed such that each of their surface normals forms an angle smaller than or greater than 90° with the longitudinal axis (L). With this orientation of the surface regions (7), fewer beams of light are passed on, in the manner of a light guide, in the optical element in a direction parallel to the longitudinal axis (L) thus resulting in dazzling effects. This therefore reduces the risk of an unwanted dazzling effect. The invention also relates to a corresponding arrangement of emitting light.