Curved Reflective Pointer for Uniform Illumination
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Solution Overview
Problem
Conventional self-luminous pointers are sensitive to the oblique angle of light entry, leading to uneven light distribution and poor handling due to the curvature of the reflective surface, which makes it difficult to achieve even illumination of the pointer's main body.
Innovation Solution
A pointer design featuring a reflective surface curved like a collective convex lens in the transverse direction and a diffusive concave lens in the vertical direction, combined with a light diffusion surface on the bottom, ensures that reflected light is evenly distributed across the main body without leaking outside, using a protrusion portion to direct light towards the diffusion surface for uniform illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the reflective surface is curved like a collective convex lens in the transverse direction, then light reflection efficiency is improved, but light distribution uniformity deteriorates
Solution Approach 1:
The reflective surface is designed with dual curvature characteristics: curved like a collective convex lens in the transverse direction to improve light collection efficiency, and curved like a diffusive concave lens in the vertical direction to achieve uniform light distribution. This dual curvature design resolves the contradiction between light reflection efficiency and light distribution uniformity.
2Use of energy by moving object
If the reflective surface curvature is increased, then light collection efficiency is improved, but handling ease deteriorates
Solution Approach 1:
The reflective surface employs dual curvature design that maintains high light collection efficiency through transverse convex lens curvature while the vertical concave lens curvature ensures uniform light distribution. This design allows the pointer to maintain optimal performance across a range of oblique angles, thereby improving handling ease without sacrificing light collection efficiency.
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 design results in a pointer that is less sensitive to the oblique angle of light entry, allowing for easy and efficient even lighting without uneven light strength, enhancing handling and illumination efficiency.
Implementation Method 1
A reflective surface 6 is formed on an inclined side of the basic portion of the main body 4. Light emitted from a light source enters the main body 4 through an entrance face 5 and is then reflected by the reflective surface 6.
Implementation Method 2
A light diffusion surface is formed on a bottom surface of the main body 4 and diffusely reflects light reflected by the reflective surface 6.
Data Source
AI summary
A pointer comprises an attached portion and a main body. The attached portion is attached to an instrument. The main body is fixed to the attached portion at a basic portion thereof and extending toward a free portion thereof. The main body has a reflective surface and a foil-stamping layer. The reflective surface is formed at an inclined surface of the basic portion and inclined to a traveling direction of light entering the main body. The foil-stamping layer is formed on a bottom surface of the main body and diffusely reflects light reflected by the reflective surface. The reflective surface is curved like a collective convex lens in a transverse direction of the inclined surface and a diffusive concave lens in a vertical direction of the inclined surface.