Adjustable Focus Light Fixture Lens Mechanism
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Solution Overview
Problem
Conventional lighting fixtures lack the ability to adjust focus easily, limiting their versatility in providing either focused or diffuse lighting without manual adjustment of multiple components.
Innovation Solution
A light fixture design where a lens and light source are movable relative to each other, allowing for adjustable focus by changing their distance, with optional inclusion of a reflector, enabling seamless transitions between focused and diffuse lighting modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lens and light source are fixed at a specific distance, then the lighting mode is stable, but the versatility to switch between focused and diffuse lighting is limited
Solution Approach 1:
The patent implements a movable lens assembly that can slide along the optical axis relative to the light source, transforming the fixed structure into a dynamic one. This allows continuous adjustment between focused and diffuse lighting modes by changing the distance between the lens and light source, directly resolving the contradiction between versatility and structural simplicity
Solution Approach 2:
The lighting device is segmented into independently movable components: the light source assembly, the lens assembly, and the reflector assembly. Each can be adjusted separately to achieve different lighting configurations, enabling versatility without requiring complete structural redesign
2Adaptability or versatility
If multiple components are made movable to enable focus adjustment, then the lighting versatility improves, but the ease of operation deteriorates due to complex adjustment mechanisms
Solution Approach 1:
The patent combines the adjustment mechanisms for the lens and reflector into a unified system where both components can be moved simultaneously or independently through integrated mounting structures. This merging reduces the number of separate adjustment operations needed, improving ease of operation while maintaining focus adjustment capability
Solution Approach 2:
The movable mounting structures are designed to serve multiple functions: they enable focus adjustment, allow beam direction control, and facilitate easy assembly/disassembly. This multi-functionality reduces the need for separate mechanisms, making the device easier to operate despite its adjustment capabilities
3Adaptability or versatility
If the lens is made movable to adjust focus, then the lighting flexibility improves, but the device complexity increases due to additional mounting and adjustment mechanisms
Solution Approach 1:
The lens mounting mechanism is designed as a dynamic sliding structure that allows the lens to move along the optical axis while maintaining optical alignment. This dynamic mounting reduces complexity compared to rigid fixed-mounting systems by using simple linear guides or threaded adjustments instead of complex positioning mechanisms
Solution Approach 2:
The lens adjustment is implemented along the optical axis (one dimension) rather than requiring two-dimensional positioning. This dimensional simplification reduces mounting mechanism complexity while still providing effective beam control flexibility through focal distance adjustment
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
Enables easy adjustment between spotlight and floodlight settings, providing flexible illumination options for both indoor and outdoor use, powered by conventional or solar energy, with the ability to capture solar power.
Implementation Method 1
a lens and light source being movable relative to each other between a first position in which the lens and the light source are nearer each other and a second position in which the lens and light source are further away from each other, wherein light produced by the light fixture is more focused or more diffuse according to the relative positions of the lens and the light source
Implementation Method 2
there is further provided a reflector for reflecting the light of the light source
Data Source
AI summary
A light fixture comprises a lens frame, a lens on the lens frame and a light source. The lens and light source are movable relative to each other between a first position in which the lens and the light source are nearer each other and a second position in which the lens and light source are further away from each other, wherein light produced by the light fixture is more focused or more diffuse according to the relative positions of the lens and the light source.