Flashlight Microstructure Film for Uniform Light Diffusion
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Solution Overview
Problem
Conventional flashlight devices suffer from non-uniform light diffusion, limited design flexibility, and inadequate color temperature adjustment, which affects imaging quality and user satisfaction, and they are not optimized for small size and portability due to structural and mechanical limitations.
Innovation Solution
A flashlight device featuring a microstructure film with a pattern on the flash lens that allows for flexible design of light beam shape, direction, diffusion angle, intensity, and spectrum distribution, using various light sources and microstructure films to achieve uniform light output and adjustable color temperature, while maintaining a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the structure of the flash lens is changed to uniformly diffuse light beams, then the light uniformity is improved, but the outer appearance limitation and mechanical strength are compromised
Solution Approach 1:
The invention divides the flash lens into two independent parts: a standard flash lens and a separate microstructure film. The microstructure film contains multiple micro-lens arrays that can be independently designed and manufactured. This segmentation allows the standard flash lens to maintain its simple structure for easy manufacturing, while the microstructure film provides the uniform light diffusion function through its segmented micro-lens design.
Solution Approach 2:
The invention combines two different optical components into a composite structure: a conventional flash lens made of standard optical material and a microstructure film made of transparent material with micro-lens arrays. This composite design allows each component to be optimized independently - the flash lens for mechanical strength and ease of manufacture, and the microstructure film for uniform light diffusion - while working together to achieve both manufacturing ease and improved light uniformity.
2Strength
If a supporting surface is added to combine the flash lens with a mechanism, then the mechanical strength is improved, but the lighting surface of the flash lens is limited
Solution Approach 1:
The invention moves the light diffusion function from the front lighting surface of the flash lens to a separate microstructure film that can be positioned in another dimension - either behind the flash lens or on its rear surface. This dimensional relocation allows the front lighting surface to remain completely unobstructed, maintaining full lighting surface area, while the microstructure film provides the necessary light control function in a different spatial plane.
Solution Approach 2:
The microstructure film acts as an intermediary optical element between the light source and the environment. It receives light from the flash lens and performs the diffusion function without interfering with the flash lens's front lighting surface. This intermediary approach allows the flash lens to maintain its full lighting surface area while still achieving uniform light diffusion through the microstructure film's micro-lens arrays.
3Length of moving object
If the thickness of the flash lens is reduced to meet small size requirements, then the portability is improved, but the mechanical strength and production precision are compromised
Solution Approach 1:
The invention segments the optical system into a standard flash lens with normal thickness for adequate mechanical strength and a separate thin microstructure film. This segmentation allows the flash lens to maintain sufficient thickness for manufacturing precision and structural integrity, while the thin microstructure film adds minimal thickness to achieve the overall compact design required for portability.
Solution Approach 2:
The invention uses a thin microstructure film instead of thickening the flash lens to achieve light uniformity. The microstructure film's thin profile allows the overall device thickness to remain small for portability, while the film's micro-lens arrays provide the necessary optical function. This approach avoids the manufacturing precision issues that would arise from making the main flash lens extremely thin.
4Adaptability or versatility
If multiple light sources are added to adjust color temperature, then the color temperature adjustment capability is improved, but the device complexity is increased
Solution Approach 1:
The invention applies different local qualities to different regions of the microstructure film by incorporating wavelength-selective micro-lens arrays with varying spectral transmission characteristics. Different areas of the microstructure film can be designed to transmit or diffuse different wavelength ranges, allowing color temperature adjustment through a single integrated component rather than requiring multiple separate light sources and control mechanisms.
Solution Approach 2:
The microstructure film serves multiple functions simultaneously: it provides uniform light diffusion through its micro-lens arrays, enables color temperature adjustment through wavelength-selective regions, and maintains a compact single-component design. This multi-functionality eliminates the need for multiple separate light sources and complex control systems, achieving color temperature adjustment capability without significantly increasing device complexity.
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 enables uniform light distribution, improved imaging quality, and reduced device thickness, making it suitable for mass production and user-friendly, while effectively addressing the limitations of conventional devices.
Implementation Method 1
a spectrum distribution of the plural light beams is modulated after the plural light beams pass through the at least one microstructure film
Implementation Method 2
the flash of light outputted from the flashlight device can be diffused uniformly
Data Source
AI summary
A flashlight device includes a light source and a flash lens. A microstructure film with a microstructure pattern is disposed on the flash lens. After plural light beams from the light source pass through the flash lens and the microstructure film, a flash of light is provided to an environment. The plural light beams are shaped by the at least one microstructure film while the plural light beams pass through the microstructure film, and/or a spectrum distribution of the plural light beams is modulated after the plural light beams pass through the microstructure film.