3D Printed Spectacle Frame Adaptation via Local Cutting
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Solution Overview
Problem
Existing methods for manufacturing spectacle frames using 3D printing or additive manufacturing techniques often result in designs that change shape when adapted to fit individual biometric features, leading to wearer discomfort and potential dissatisfaction, as well as deformation of the original design, which is undesirable for both opticians and designers.
Innovation Solution
A method involving creating a virtual 3D model of the spectacle frame and the wearer's head, positioning the frame relative to the head in a virtual environment, cutting a portion along the intersecting plane to adapt the contact areas while preserving the original shape, and manufacturing the frame using additive techniques to ensure comfort without deforming the frame's appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the spectacle frame is adapted to the wearer's biometric features by deforming parts of the frame, then wearer comfort is improved, but the original shape and design of the frame are deformed and lost
Solution Approach 1:
The frame adaptation process is segmented into two distinct parts: the contact areas (temple pieces and bridge) are adapted to the wearer's biometric features, while the remaining frame structure maintains its original design. This segmentation allows comfort improvement without compromising the overall aesthetic shape of the frame.
Solution Approach 2:
Only specific local areas of the frame that contact the wearer's head (temple pieces and bridge) are adapted to match their biometric features. The rest of the frame retains its original design characteristics, ensuring that the adaptation improves comfort without deforming the overall frame shape and design.
2Adaptability or versatility
If the frame shape is deformed to fit the wearer's head, then the frame feels adapted to the wearer, but the designer's original design intent is lost
Solution Approach 1:
The frame is divided into adaptable contact portions (temple pieces and bridge) and non-adaptable design portions. This segmentation enables the frame to adapt to the wearer's head shape in specific areas while preserving the designer's original aesthetic intent in the remaining areas.
Solution Approach 2:
Adaptation is applied locally only to the temple pieces and bridge areas that contact the wearer's head. The majority of the frame structure maintains its original design characteristics, thus preserving the designer's intent while providing necessary adaptation for comfort.
3Adaptability or versatility
If 3D printing is used to manufacture the frame, then customization to individual wishes is enabled, but the original design may be lost during adaptation
Solution Approach 1:
The 3D printing process is applied selectively to only the contact portions of the frame (temple pieces and bridge) that need adaptation to the wearer's biometric features. The remaining frame components are manufactured according to the original design specifications, preserving the designer's intent while enabling customization where needed.
Solution Approach 2:
Customization through 3D printing is applied locally only to the areas requiring adaptation to individual wearer features. The rest of the frame is produced with high precision according to the original design, maintaining the designer's aesthetic intent while providing necessary customization for comfort and fit.
Data Source
AI summary
The present invention relates to a method for manufacturing a spectacle frame adapted to a spectacle wearer, particularly by means of 3D printing or other additive manufacturing techniques. The present invention provides for this purpose a method comprising the steps of providing a virtual 3D model of a spectacle frame; providing a virtual 3D model of the head of the spectacle wearer which comprises at least a part of the head of the spectacle wearer which is in contact with the spectacle frame when the spectacle frame is being worn; positioning the 3D model of the spectacle frame relative to the 3D model of the head in a virtual environment so that the 3D model of the head intersects the 3D model of the spectacle frame where said part of the head of the spectacle wearer is in contact with the spectacle frame when the spectacle frame is being worn; cutting a portion out of the 3D model of the spectacle frame along the intersecting plane of the 3D model of the spectacle frame and the 3D model of the head; and manufacturing at least a part of the spectacle frame on the basis of the part of the 3D model of the spectacle frame from which the portion has been cut.