Optical Reflection Plate with Varying Reflectivity for Uniform Lighting
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Solution Overview
Problem
Conventional lighting devices face challenges in achieving uniform light emission due to the limited adjustability of reflection plates, which are often fixed in molding, leading to bright and dark regions, causing eye discomfort and increasing material costs.
Innovation Solution
An optical reflection plate with a non-reflective center and concentrically arranged reflection regions having varying light mirror and scattering reflectivities, which are gradually decreased and increased respectively, allowing for improved light distribution without the need for adjusting the plate's position or number, even when manufactured by molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the reflection plate is fixed in molding with uniform reflection properties, then the manufacturing process is simple, but the light uniformity becomes poor causing bright and dark regions
Solution Approach 1:
The reflection plate is divided into multiple regions with different reflection rates. The center region has a first reflection rate while the peripheral region has a second reflection rate that differs from the first. This local differentiation of reflection properties allows each region to contribute differently to light distribution, improving overall light uniformity while maintaining a simple molded structure without requiring mechanical adjustment.
2Illumination intensity
If the reflection plate position and shape are changed to improve light uniformity, then the light distribution improves, but the device complexity increases and adjustability is limited in molded housing
Solution Approach 1:
Instead of changing the physical position or shape of the reflection plate, the invention changes the optical parameter (reflection rate) of different regions of the plate. By varying the reflection rate across the plate surface through molding techniques, the system achieves improved light uniformity without increasing mechanical complexity or requiring adjustability mechanisms.
3Illumination intensity
If multiple reflection plates with different properties are used to achieve uniform light emission, then the light uniformity improves, but the material cost and device complexity increase
Solution Approach 1:
The invention combines multiple reflection properties into a single reflection plate by creating different regions with different reflection rates within the same molded component. This integration eliminates the need for multiple separate reflection plates, reducing material costs and simplifying the device structure while achieving uniform light emission through the coordinated action of different regions.
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 enhances light-emitting uniformity and reduces material costs by allowing for adjustable reflection parameters within a limited space, ensuring consistent illumination without manual adjustments.
Implementation Method 1
the light emitted from the light source is reflected by the reflection regions
Implementation Method 2
each of the reflection regions comprises the reflection parameters of a light mirror reflectivity and a light scattering reflectivity
Data Source
AI summary
A lighting device is provided. The lighting device includes an optical reflection plate, a light holder, and at least one light source. The optical reflection plate includes a non-reflective region located in the center of the optical reflection plate, and a plurality of reflection regions surrounding the non-reflective region in sequence. The light holder is located on the non-reflective region of the optical reflection plate and includes a circle side-light concave portion. A light-emitting opening of the side-light concave portion faces to the reflection regions. The light source is located in the side-light concave portion of the light holder. When the light source emits light, the light emitted from the light source is reflected by the reflection regions.