Partition-based five-axis tool path generation for freeform surface machining using a non-spherical tool
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Manufacturing Systems"
DOI: 10.1016/j.jmsy.2020.12.004
Abstract: Abstract Freeform surfaces are widely used in many industries for various purposes, and multi-axis CNC machining is the most adopted method for machining them due to its high accuracy and flexibility. The prevailing type of… read more here.
Keywords: freeform surface; surface; tool; cutter ... See more keywords
A compact wide-spectrum imaging spectrometer using freeform surface
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
DOI: 10.1016/j.optcom.2019.125097
Abstract: Abstract This paper presents a compact imaging spectrometer covering visible–near-infrared (VNIR) and shortwave-infrared (SWIR) spectrum with a large field-of-view (FOV). The design is composed of a curved prism for dispersing beam and two freeform mirrors… read more here.
Keywords: freeform surface; spectrum; imaging spectrometer;
A Digital Twin-Based Intelligent Robotic Measurement System for Freeform Surface Parts
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2023.3261933
Abstract: This article proposed a novel framework of a digital twin (DT)-based robotic measurement system (RMS) for freeform surface parts, which can improve the efficiency, autonomy, and intelligence of the RMS. This framework provides core services… read more here.
Keywords: measurement system; robotic measurement; freeform surface; surface parts ... See more keywords
3D printing on freeform surface: Real-time and accurate 3D dynamic dense surface reconstruction with HoloLens and displacement measurement sensors
Sign Up to like & getrecommendations! Published in 2023 at "Advances in Mechanical Engineering"
DOI: 10.1177/16878132221148404
Abstract: This paper attempts to print irregular 3D objects on a freeform surface. Notably, it is inevitable to cause errors when creating a specific object shape in simulated and real-life scenarios. This is mainly attributed to… read more here.
Keywords: hololens displacement; surface reconstruction; surface; real time ... See more keywords
Designing reflective imaging systems with multiple-surfaces-integrated elements using a Gaussian function freeform surface.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.460955
Abstract: We propose a design scheme and method of a freeform off-axis reflective imaging system with multiple mirrors integrated into one element. The use of a multiple-surfaces-integrated element, described by the Gaussian basis functions freeform surface… read more here.
Keywords: surfaces integrated; multiple surfaces; surface; reflective imaging ... See more keywords
Analysis and design of a wide-field and large-numerical-aperture compact imaging spectrometer with a freeform surface.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.472164
Abstract: Wide-field-of-view (FoV) Offner imaging spectrometers with freeform surfaces have been studied extensively in recent years. However, a design result with a large numerical aperture (NA) cannot be simultaneously obtained with this layout. We present the… read more here.
Keywords: spectrometer; spectrometer freeform; imaging spectrometer; freeform surface ... See more keywords
Design of a compact wide-spectrum double-channel prism imaging spectrometer with freeform surface.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.009512
Abstract: A double-channel prism imaging spectrometer that includes visible-near-infrared (VNIR) and shortwave-infrared (SWIR) spectra is presented. Double slits divide a wide spectral band into two independent channels for VNIR and SWIR, guaranteeing their independent spectral resolution.… read more here.
Keywords: double channel; freeform surface; channel prism; prism imaging ... See more keywords
Single-shot freeform surface profiler.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.380305
Abstract: We propose a novel and simple method of single-shot freeform surface profiler based on spatially phase-shifted lateral shearing interferometry. By the adoption of birefringent materials, the laterally shearing waves are simply generated without any bulky… read more here.
Keywords: freeform surface; surface; single shot; shot freeform ... See more keywords
Enhanced calibration for freeform surface misalignments in non-null interferometers by convolutional neural network.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.383938
Abstract: Most tested surface calibration methods in interferometers, such as the direct coefficients removing method, the sensitive matrix (SM) method, and deep neural network (DNN) calibration method, rely on Zernike coefficients. However, due to the inherent… read more here.
Keywords: non null; neural network; freeform surface; calibration ... See more keywords
Nonlinear dwell-time algorithm for freeform surface generation by atmospheric-pressure plasma processing.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.459248
Abstract: Based on deterministic chemical etching, atmospheric pressure plasma processing (APPP) with a high material removal rate and spatial machining resolution, is a promising computer-controlled optical surfacing (CCOS) technique for freeform surface generation. However, the time-variant… read more here.
Keywords: time; generation; freeform surface; dwell time ... See more keywords