Extendable Lens with Dual Reflecting Surfaces for Uniform Lighting
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Solution Overview
Problem
Conventional lenses in illuminating devices have limited light emission angles and uniformity, leading to short light propagation distances and poor light distribution, particularly in ceiling lamps that require both direct and semi-direct lighting functions.
Innovation Solution
An extendable lens with a light incident surface, a light emitting surface, and first and second reflecting surfaces that utilize total reflection to adjust the optical path, allowing for a larger emission angle and uniform light distribution by reflecting light in multiple paths before emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional lens is used in illuminating devices, then the structure is simple, but the light emission angle is limited and light uniformity is poor
Solution Approach 1:
The lens is divided into multiple functional surfaces: a light incident surface, a light emitting surface, a first reflecting surface, and a second reflecting surface. This segmentation allows different parts of the lens to perform different optical functions, with the reflecting surfaces specifically designed to redirect light paths to achieve uniform light distribution across the emission area.
Solution Approach 2:
The patent introduces multiple light paths by adding reflecting surfaces that redirect light in different directions. Light can be reflected once by the second reflecting surface, or reflected by both the first and second reflecting surfaces, creating multiple dimensional light paths that expand the emission angle and improve light uniformity throughout the space.
2Length of moving object
If a conventional lens is used, then the manufacturing process is simple, but the light propagation distance is short
Solution Approach 1:
The lens structure is segmented into distinct functional surfaces including light incident surface, light emitting surface, first reflecting surface, and second reflecting surface. This segmentation enables precise control over light paths, allowing light to be reflected multiple times through controlled optical paths, thereby extending the effective propagation distance of light within the illuminating device.
Solution Approach 2:
By introducing reflecting surfaces that create multiple light paths, the patent extends light propagation in additional spatial dimensions. Light can travel through the lens, reflect off the first reflecting surface, then the second reflecting surface, and exit through the light emitting surface, creating extended optical paths that increase light propagation distance without proportionally increasing physical lens size.
3Illumination intensity
If a conventional lens is used, then the device structure is simple, but the light distribution is poor
Solution Approach 1:
The lens is segmented into multiple functional surfaces with specific optical roles. The first reflecting surface and second reflecting surface are positioned to create multiple light paths, ensuring light is distributed uniformly across the emission area. This segmentation allows precise control over light direction and distribution patterns.
Solution Approach 2:
The patent uses reflecting surfaces to introduce additional light paths that distribute light across multiple spatial dimensions. Light can be reflected once or twice through different surfaces, creating a multi-dimensional light distribution pattern that achieves uniform illumination across the entire emission area, significantly improving light distribution quality.
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 lens achieves a longer propagation distance and higher light uniformity, enabling the illuminating device to provide both direct and ceiling lighting functions effectively.
Implementation Method 1
a first reflecting surface and a second reflecting surface disposed on two sides of the light incident surface respectively, where light that enters the lens from the light incident surface includes: a first part which is reflected by the second reflecting surface and then directly emits from the light emitting surface; and a second part which is reflected to the second reflecting surface by the first reflecting surface, then reflected by the second reflecting surface, and then emits from the light emitting surface
Data Source
AI summary
The present disclosure provides a lens and an illuminating device employing the same. The lens is an extendable lens, and includes a light incident surface, a light emitting surface, and a first reflecting surface and a second reflecting surface disposed on two sides of the light incident surface respectively. Light enters the lens from the light incident surface at least includes: a first part which is reflected by the second reflecting surface and then directly emits from the light emitting surface, and a second part which is reflected to the second reflecting surface by the first reflecting surface, reflected by the second reflecting surface, and then emits from the light emitting surface.