Movable Macro Lens for Close-Up Resolving Power
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Solution Overview
Problem
Conventional portable cell phone cameras lack sufficient resolving power and contrast for close-up photography due to their compact design, which hinders their ability to perform effectively in applications like barcode or QR code scanning.
Innovation Solution
A camera unit is designed with a movable macro lens that can be optically coupled with the camera lens, featuring a plano-convex lens structure formed on a plane substrate by wafer level processing, providing an effective focal length between 80-150 mm and enhancing resolving power and contrast for close-up photography.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a conventional camera lens is used in a compact cell phone, then the device maintains a thin and compact design, but the resolving power and contrast for close-up photography deteriorates
Solution Approach 1:
The camera system is segmented into two distinct lens modules: a conventional camera lens for general photography and a dedicated macro lens for close-up photography. The macro lens can be optically coupled with the camera lens when needed, allowing the device to maintain its compact form factor while providing specialized close-up imaging capability when required.
Solution Approach 2:
The macro lens is designed to be movable and can be optically coupled with the camera lens along the optical axis when close-up photography is needed. This dynamic configuration allows the system to adapt its optical properties based on the imaging requirements, providing both compactness for general use and enhanced resolving power for macro photography.
2Measurement precision
If close-up lenses are added to improve resolving power for barcode scanning, then the resolving power improves, but the device complexity increases
Solution Approach 1:
The macro lens is integrated with the existing camera lens system through optical coupling along the optical axis. Rather than adding a completely separate imaging system, the macro lens merges with the camera lens to form a combined optical system, thereby improving barcode scanning capability while minimizing the increase in overall device complexity.
Solution Approach 2:
The macro lens is designed to serve multiple functions: it can be used for close-up photography, barcode scanning, and QR code reading. By making the lens system multi-functional, the patent reduces the need for separate specialized components, thereby improving resolving power for various close-up applications without proportionally 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 camera unit achieves improved resolving power and contrast for close-up photography and barcode scanning by optically coupling the macro lens with the camera lens, enabling efficient and convenient usage in portable electronic devices.
Implementation Method 1
a plano-convex lens structure (22) formed on the plane substrate (21) by wafer level processing
Data Source
AI summary
A camera unit is provided, including a camera lens and a macro lens coupled with the camera lens module along an optical axis. The macro lens comprises a plane substrate and a plano-convex lens structure formed on the plane substrate by wafer level processing, wherein the effective focal length of the macro lens is between 80-150 mm.