High-Order Aspherical Lens Optical Projection Device
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Solution Overview
Problem
Existing household projectors have large optical projection devices that lack portability and miniaturization, and suffer from poor projection imaging sharpness.
Innovation Solution
An optical projection device with a coaxial arrangement of a light source, light-concentrating component, and imaging component, utilizing high-order aspherical lenses and optical plastics, including a reflecting cup condenser lens and Fresnel lenses to concentrate and correct light for even illumination and aberration correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional lenses are used in the optical projection device, then the device can achieve basic projection function, but the device size becomes large and portability is lost
Solution Approach 1:
The patent changes the optical parameters by using high-order aspherical lenses instead of conventional spherical lenses. The aspherical lenses have specific surface curvature parameters that enable better light focusing within a compact structure, achieving both miniaturization and improved image sharpness simultaneously
Solution Approach 2:
The patent employs composite optical design combining multiple lens types (aspherical lenses, Fresnel lenses) with different optical properties. This composite approach allows the system to achieve compact size while maintaining high projection quality through the synergistic effect of different lens components
2Ease of operation
If the optical projection device is miniaturized, then portability is improved, but the projection imaging sharpness deteriorates
Solution Approach 1:
The patent utilizes aspherical lens surfaces with specific curvature parameters to improve light focusing capabilities. The aspherical geometry allows for better correction of optical aberrations in a compact design, enabling sharp projection images despite the miniaturized device size
Solution Approach 2:
By optimizing the optical parameters of the aspherical lenses and adjusting the spacing between lens components, the patent achieves a balance between compact size and image quality. The specific parameter values provided in the patent enable miniaturization while maintaining projection sharpness
3Manufacturing precision
If high-order aspherical lenses are used, then the image quality is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple lens types (aspherical and Fresnel lenses) in a composite optical system. This approach distributes the optical correction functions across different components, achieving high image quality while managing system complexity through functional decomposition
Solution Approach 2:
The optical system is segmented into multiple functional components (light source, light-concentrating component with aspherical lenses, imaging component with Fresnel and convex lenses). This segmentation allows each component to be optimized independently while working together to achieve overall high image 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
This design achieves miniaturization of the projector while significantly improving image quality and user experience through the use of high-order aspherical lenses and optical plastics, enabling portable and practical household projection solutions.
Implementation Method 1
the first lens is a reflecting cup condenser lens
Implementation Method 2
the second lens is Fresnel lens
Implementation Method 3
the fourth lens and the fifth lens are both convex lenses
Data Source
AI summary
The invention discloses an optical projection device for household projectors, comprising light source, light-concentrating component, liquid crystal display and imaging component, wherein light source, light-concentrating component, liquid crystal display and imaging component are arranged in a coaxial arrangement; the light-concentrating component comprises a first lens and a second lens; the imaging component comprises a third lens, a fourth lens and a fifth lens arranged side by side and coaxially in sequence. Compared with the prior art, in the invention, the light can be concentrated on the liquid crystal display by arranging the first lens and the second lens side by side and coaxially, and evenly illuminate the liquid crystal display; the first lens and the second lens are set as high-order aspherical lens members, which can realize the miniaturization of optical projection device and improve the image quality of household projectors, and thereby effectively improving user experience.