LED Lighting Device with Segmented Openings for 3D Surface Lighting
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Solution Overview
Problem
Conventional LED-based vehicle lamps require multiple point light sources to achieve three-dimensional lighting, limiting the diversity of images that can be expressed and increasing complexity.
Innovation Solution
A lighting device with a substrate, resin layer, light blocking layer, and lens plate configuration that allows for uniform intensity point light sources to be emitted through opening portions, enabling three-dimensional surface lighting and stereoscopic images, with convex portions on the lens plate to refract light into stereoscopic images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple light emitting diodes are used to achieve three-dimensional lighting, then the lighting coverage is improved, but the number of components and device complexity increase
Solution Approach 1:
The light blocking layer is divided into multiple opening portions that selectively block and transmit light from different LED positions, allowing a single LED to create multiple light patterns. This segmentation enables three-dimensional lighting effects without requiring multiple LEDs for each pattern position
Solution Approach 2:
The light blocking layer with opening portions acts as an intermediary between the LED and the lens plate, transforming the point light source into controlled light patterns. This intermediary structure enables the single LED to effectively illuminate multiple regions by controlling which areas receive light
2Ease of manufacture
If identical light emitting diodes are used, then the manufacturing cost is reduced, but the diversity of light patterns is limited
Solution Approach 1:
The lens plate can be tilted or rotated around the LED to dynamically change the light pattern orientation and shape. This dynamic adjustment capability allows identical LEDs to produce diverse light patterns by simply changing the lens plate angle, without requiring different LED types or configurations
Solution Approach 2:
By changing the tilt angle and rotation angle of the lens plate, the light pattern parameters (orientation, elongation direction, position) are dynamically adjusted. This parameter change approach enables diverse light patterns from identical LEDs through simple angular adjustments
3Length of stationary object
If the lens plate is positioned close to the light blocking layer, then the device thickness is reduced, but the optical reliability and light quality deteriorate
Solution Approach 1:
The opening portions are designed with specific sizes and spacing that provide sufficient light transmission area while maintaining a compact structure. The total opening area is optimized to be greater than 50% of the light blocking layer area, ensuring adequate light quality without requiring excessive distance between the lens plate and light blocking layer
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 reduces the number of light sources needed, allows for flexible and thin lighting modules with improved optical reliability, and enables various stereoscopic effects by tilting or rotating the lens plate.
Implementation Method 1
a lens plate disposed on the light blocking layer, wherein the lens plate includes a light transmitting portion and a plurality of convex portions arranged on one or the other surface of the light transmitting portion
Data Source
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AI summary
A lighting device disclosed in an embodiment of the invention includes a substrate; a plurality of light sources disposed on the substrate; a resin layer covering the light source on the substrate; a light blocking layer having an opening portion on the resin layer; and a lens plate disposed on the light blocking layer, wherein the lens plate includes a light transmitting portion and a convex portion arranged on one surface or the other surface of the light transmitting portion, and the total area of the opening portions is 50% or less of an area of an emission surface through which light is emitted through the resin layer, and the interval between the lens plate and the light blocking layer may be greater than the length of the opening portion.