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Session Chair: Marco Hanft, Carl Zeiss AG, Germany
Location:Room 21 (ICM, 2nd Floor)
10:30 - 10:50 Invited ID: 130 / S06: 1 Manufacturing, Tolerancing, and Testing of Optical Systems (MOS)
Development and Application of MRF Based on Robot Arm
Xuejun Zhang,,, Longxiang Li,,, Donglin Xue,,, Chi Song,,, Bo Ai,,
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
Magnetorheological Finishing (MRF) is widely regarded as an effective technique to polish and
figure aspheric optics. MRF based on Robot Arm is developed by us. This new machine is more flexible,
efficient, cost-effective and smaller space-usage in optical shop, compared with the traditional MRF
machines. The components of MRF based on Robot Arm are introduced firstly. Position-attitude control and
polishing tool path are also studied in this paper. The experiments and application of MRF based on Robot
Arm demonstrate the effectiveness and validity of MRF based on Robot Arm in optical fabrication.
10:50 - 11:10 Invited ID: 139 / S06: 2 Manufacturing, Tolerancing, and Testing of Optical Systems (MOS)
Figuring Of Optical Aluminium Devices By Reactive Ion Beam Etching
Jens Bauer1, Melanie Ulitschka1, Frank Frost1, Thomas Arnold1,2
1Leibniz Institute of Surface Engineering (IOM), Germany; 2TU Dresden, Germany
Ion beam figuring (IBF) is an established method in high-end surface manufacturing. However, the direct processing of desired materials as standard Al alloys (e.g. Al6061) fails, since the surface roughness increases drastically as a result of inhomogeneous etching due to structural, crystallographic and chemical irregularities inside the material matrix. As an alternative figuring technology reactive ion-beam etching (RIBE) is a promising route. RIBE provides the direct machining of Al alloys while preserving the surface roughness almost in its initial state. The RIBE process with nitrogen gas is focused more detailed in this study.
11:10 - 11:25 ID: 153 / S06: 3 Manufacturing, Tolerancing, and Testing of Optical Systems (MOS)
Testing and characterization of Challenging Optics and Optical Systems with Shack Hartmann Wavefront Sensors
Imagine Optic, France
The Shack-Hartman wavefront sensor is a common metrology tool in the field of laser, adaptive optics and astronomy. However, this technique is still scarcely used in optics and optical system metrology. With the development of manufacturing techniques and the increasing need for optical characterization in the industry, the Shack-Hartmann wavefront sensor emerges as an efficient complementary tool to the well-established Fizeau interferometry for optical system metrology. Moreover, the raise of smart vehicles equipped with optical sensors and augmented reality, the optical characterization of glass and transparent flat materials becomes an issue that can be addressed with Shack-Hartmann sensors. Aberration measurements of challenging optics will be presented such as optical filters, thin flat optics, aspheric lenses and large optical assemblies
11:25 - 11:40 ID: 131 / S06: 4 Manufacturing, Tolerancing, and Testing of Optical Systems (MOS)
The Manufacturing of a Multi-surface Monolithic Telescope with Freeform Surfaces
Todd Blalock, Brian Myer, Brittany Cox, Jessica Nelson
Optimax Systems Inc., United States of America
Monolithic multi-surface telescopes combined with freeform optical surfaces provide improvements in optical performance in a smaller footprint as compared to systems with spherical surfaces, while providing superior mechanical stability to traditional telescope assemblies. Three different monolithic telescope concepts, in different configurations and optical performance were produced as proof of concepts. The results of the telescopes are presented as well as the unique manufacturing and testing challenges to produce these monolithic optical systems.
11:40 - 11:55 ID: 129 / S06: 5 Manufacturing, Tolerancing, and Testing of Optical Systems (MOS)
Final Figuring of Optical Components Surfaces Considering Deformations Introduced by Support System
Magomed A. Abdulkadyrov, Aleksandr P. Semenov, Nikolay S. Dobrikov, Aleksandr N. Ignatov, Vladimir E. Patrikeev
Membrane-pneumatic support systems for mirror mounting are often used at JSC LZOS during working surface tests while producing of large-dimensioned optical components of astronomical and space application. However, in some cases, it is necessary to support the mirror by glued interface elements. In such case, the difference in the surface shape between the standard and the technological support, which is considered during figuring, is calculated by means of modelling.