Lens Parameter Determination via Depth Map Analysis
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Solution Overview
Problem
Current methods for determining optical parameters of lenses, such as spherical power, cylindrical power, and cylindrical axis, are often cumbersome and require auxiliary optical means, limiting their accuracy and practicality for applications like duplicating eyeglasses or producing spare lenses.
Innovation Solution
A system and method using a computing device with a depth mapper and a lensometer module that analyzes depth maps to determine optical parameters without auxiliary optical means, employing algorithms to process depth information and calculate parameters like spherical power, cylindrical power, and cylindrical axis based on depth maps captured by cameras or structured-light systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional methods using auxiliary optical means are used to determine optical parameters, then measurement capability is achieved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent extracts and removes the auxiliary optical means from the traditional lens measurement system. By using a depth mapper to capture depth maps of the lens directly, the system eliminates the need for additional optical equipment like lensometers or autocollimators, thereby simplifying the device while maintaining measurement capability through computational analysis of depth information
Solution Approach 2:
The patent replaces the traditional optical measurement system with a depth mapping system that uses structured light or time-of-flight cameras. This substitution transitions from optical interference and reflection-based measurements to direct depth capture and computational analysis, reducing device complexity while achieving comparable or improved measurement precision for optical parameters
2Measurement precision
If traditional optical methods are used, then optical parameters can be determined, but ease of operation and productivity worsen due to cumbersome procedures
Solution Approach 1:
The depth mapper system performs self-service by automatically capturing depth maps and computing optical parameters without requiring manual alignment or adjustment procedures. The system autonomously processes the depth information to determine spherical power, cylindrical power, and cylindrical axis, eliminating the need for operator skill and complex procedural steps while maintaining high measurement precision
Solution Approach 2:
The patent changes the measurement parameter from traditional optical readings to depth map data. By capturing the three-dimensional surface topology of the lens and analyzing depth variations, the system derives optical parameters through computational methods, simplifying the operational process while achieving accurate measurements without manual intervention
3Measurement precision
If auxiliary optical means are employed, then measurement capability is maintained, but productivity and efficiency deteriorate
Solution Approach 1:
The system performs preliminary action by capturing the complete depth map of the lens in a single operation. This depth map contains all necessary information for determining spherical power, cylindrical power, and cylindrical axis simultaneously, eliminating the need for multiple sequential measurements with different optical instruments and significantly improving productivity for lens duplication applications
Data Source
AI summary
Some demonstrative embodiments include apparatuses, systems and/or methods of determining one or more parameters of a lens, For example, a computing device may be configured to process at least one depth map including depth information captured via a lens; and to determine one or more parameters of the lens based on the depth information.