Precision glass molding of freeform optics

Gurganus, Dustin; Owen, Joseph D.; Dutterer, Brian S.; Novak, Spencer; Symmons, Alan; Davies, Matthew A.

doi:10.1117/12.2320574

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Surface roughness of both the grounded and moulded surface was obtained S a and S q approximately 5 nm and form deviation under PV = 530 nm for mould insert. Gurganus et al [195] worked on the development of Alvarez lens for visible light. The procedure was designed to replicate large freeform optics, such as those with a 45 mm clear aperture and a sag of 329 µm, which require more heating and cooling time than smaller and medium-sized optics.…”

Section: Glass Mouldingmentioning

confidence: 99%

Advances in the design and manufacturing of novel freeform optics

Kumar

Tong

Jiang

2022

Int. J. Extrem. Manuf.

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Freeform optics has become the most prominent element of the optics industry. Advanced freeform optical designs supplementary to ultra-precision manufacturing and metrology techniques have upgraded the lifestyle, thinking, and observing power of existing humans. Imaginations related to space explorations, portability, accessibility have also witnessed sensible in today’s time with freeform optics. Present-day design methods and fabrications techniques applicable in the development of freeform optics and the market requirements are focussed and explained with the help of traditional and non-traditional optical applications. Over the years, significant research is performed in the emerging field of freeform optics, but no standards are established yet in terms of tolerances and definitions. We critically review the optical design methods for freeform optics considering the image forming and non-image forming applications. Numerous subtractive manufacturing technologies including figure correction methods and metrology have been developed to fabricate extreme modern freeform optics to satisfy the demands of various applications such as space, astronomy, earth science, defence, biomedical, material processing, surveillance, and many more. We described a variety of advanced technologies in manufacturing and metrology for novel freeform optics. Next, we also covered the manufacturing-oriented design scheme for advanced optics. We conclude this review with an outlook on the future of freeform optics design, manufacturing and metrology.

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Section: Glass Mouldingmentioning

confidence: 99%