Lenticular Lens Sheets Angular Arrangement for Decorative Illumination
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Solution Overview
Problem
Existing illumination devices using lenticular lens sheets for diffusing light do not effectively utilize the sheets for decorative purposes and lack the ability to create visually appealing, high-contrast illumination patterns.
Innovation Solution
The use of multiple laminated lenticular lens sheets with specific angular arrangements and a support member to create a cylindrical structure that diffuses light in multiple directions, generating streak illumination patterns with high contrast and decorativeness, while allowing for adjustable orientation and color variability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a single lenticular lens sheet is used for diffusing light, then light diffusion is achieved, but the illumination device lacks decorativeness and visual appeal
Solution Approach 1:
The single lenticular lens sheet is divided into multiple lenticular lens sheets (first, second, and third sheets) with different orientations. Each sheet diffuses light in specific directions, creating segmented control over light distribution while collectively achieving both functional diffusion and decorative streak patterns
Solution Approach 2:
The patent introduces angular orientation as a new dimension for arranging lenticular lens sheets. By orienting sheets at different angles (0° and 90° relative to each other), the system creates three-dimensional light diffusion patterns that produce decorative streaks visible from multiple viewing angles, transforming a two-dimensional diffusion problem into a three-dimensional optical effect
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 results in a high-decorativeness illumination device that generates visually appealing streak illumination patterns with high contrast, saving power and offering adjustable decorativeness through rotation and color changes.
Implementation Method 1
The diffusion sheet is a lenticular lens sheet in which a plurality of plano-convex cylindrical lenses is arranged in parallel, and diffuses and transmits light rays emitted from the LEDs
Implementation Method 2
The first lenticular lens sheet includes a plurality of first plano-convex cylindrical lenses, each extending in a first direction, and the second lenticular lens sheet includes a plurality of second plano-convex cylindrical lenses, each extending in a second direction
Implementation Method 3
the first angle range is an angle range in which rotation moire appears by the first and second lenticular lens sheets
Data Source
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AI summary
Provided is a high-decorativeness illumination device that utilizes lenticular lens sheets. An illumination device (10) includes first to third lenticular lens sheets (11 to 13), an LED light source (14), and a casing (15). The first and second lenticular lens sheets (11 and 12) are laminated such that an angle (θ1) formed by plano-convex cylindrical lenses falls within a first angle range which is greater than 0 degrees and is less than 30 degrees. Accordingly, moire fringes appear in illumination light rays. The third lenticular lens sheet (13) is laminated on the first and second lenticular lens sheets (11 and 12) such that angles (θ2 and θ3) formed by plano-convex cylindrical lenses fall within a second angle range which is equal to or greater than 30 degrees and is equal to or less than 90 degrees.