scholarly journals Null screens to evaluate the shape of freeform surfaces: Progressive Addition Lenses

2021 ◽  
Author(s):  
Oliver Huerta-Carranza ◽  
Maximino Avendaño Alejo ◽  
J. Rufino Diaz-Uribe
Keyword(s):  
Freeform Surfaces ◽  
Progressive Addition Lenses

BIM based decision-support tool for automating design to fabrication process of freeform lattice space structure

2021 ◽  
pp. 095605992110338
Author(s):  
Saeid Haghir ◽  
Ramtin Haghnazar ◽  
Sara Saghafi Moghaddam ◽  
Danial Keramat ◽  
Mohammad Reza Matini ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Decision Support Tool ◽  
Computational Design ◽  
Space Structure ◽  
Digital Design ◽  
Information Modeling ◽  
Freeform Surfaces ◽  
Geometric Problem ◽  
Support Tool ◽  
Lattice Space

Complex freeform surfaces and structures are increasingly designed and used in the product and building industry due to the advances in mathematics and digital design tools. However, there is still a gap between designing freeform surfaces and fabricating them. The process of preparing freeform surfaces’ shop drawings is complicated, time-consuming, and lacks the mutual understanding among the stakeholders. Computational design and Building Information Modeling (BIM) can serve as a mediator agent for the integration of design goals with the geometric logic of constructability. They can also facilitate creating platforms for designing and evaluating freeform structures. This open-ended qualitative research attempts to develop a systematic methodology for automating the design and construction drafting process of freeform lattice space structure. Solving this complex geometric problem aims to benefit the design for construction and manufacturers and shrink the cost and time of the process. The study employs a 3D computer-aided design (CAD) tool and introduces an algorithm that generates a BIM model. The BIM model contains shop drawings and suggests the specifications of the main elements, such as beams, glass panels, and nodes.

scholarly journals Laser based micro texturing of freeform surfaces of implants using a Stewart platform

2021 ◽  
Author(s):  
K.E.Ch. Vidyasagar ◽  
Varun Aggarwal ◽  
Sasanka Sekhar Sinha ◽  
Subir Kumar Saha ◽  
Dinesh Kalyanasundaram
Keyword(s):  
Stewart Platform ◽  
Freeform Surfaces

Comparison of physiognomy and frame angle parameters using different devices to prescribe progressive addition lenses

2021 ◽  
pp. 1-8
Author(s):  
Oscar Garcia-Espinilla ◽  
Ines Gallegos-Cocho ◽  
Irene Sanchez ◽  
Pilar Cañadas ◽  
Raul Martin
Keyword(s):  
Progressive Addition Lenses

scholarly journals Ellipsoid Packing Structures on Freeform Surfaces

2018 ◽  
Vol 37 (7) ◽  
pp. 87-95
Author(s):  
Qun‐Ce Xu ◽  
Bailin Deng ◽  
Yong‐Liang Yang
Keyword(s):  
Freeform Surfaces

Design philosophy for progressive addition lenses

1993 ◽  
Vol 32 (1) ◽  
pp. 111 ◽  
Author(s):  
Günther H. Guilino
Keyword(s):  
Design Philosophy ◽  
Progressive Addition Lenses

A Novel Marking Reader for Progressive Addition Lenses Based on Gabor Holography

2016 ◽  
Vol 93 (5) ◽  
pp. 534-542 ◽  
Author(s):  
Beatriz Perucho ◽  
José Angel Picazo-Bueno ◽  
Vicente Micó
Keyword(s):  
Progressive Addition Lenses

scholarly journals Deployment and evaluation of a dual-sensor autofocusing method for on-machine measurement of patterns of small holes on freeform surfaces

2014 ◽  
Vol 53 (10) ◽  
pp. 2246
Author(s):  
Xiaomei Chen ◽  
Andrew Longstaff ◽  
Simon Fletcher ◽  
Alan Myers
Keyword(s):  
Freeform Surfaces ◽  
Dual Sensor ◽  
Small Holes

Dispersed grinding wheel profiles for accurate freeform surfaces

2011 ◽  
Vol 51 (6) ◽  
pp. 536-542 ◽  
Author(s):  
J. Xie ◽  
J.H. Zheng ◽  
R.M. Zhou ◽  
B. Lin
Keyword(s):  
Grinding Wheel ◽  
Freeform Surfaces
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