Ultra-Precision Method of Joining Optical Lenses Using a Shrink Fitter

Ultra-precision Float Polishing of Optical Materials

buckling of viscoelastic composite plates using the finite strip method

در سال های اخیر، تقاضای استفاده از تئوری خطی ویسکوالاستیسیته بیشتر شده است. با افزایش استفاده از کامپوزیت های پیشرفته در صنایع هوایی و همچنین استفاده روزافزون از مواد پلیمری، اهمیت روش های دقیق طراحی و تحلیل چنین ساختارهایی بیشتر شده است. این مواد جدید از خودشان رفتارهای مکانیکی ارائه می دهند که با تئوری های الاستیسیته و ویسکوزیته، نمی توان آن ها را توصیف کرد. این مواد، خواص ویسکوالاستیک دارند....

Optical Design using Fresnel Lenses

The Fresnel lens can be used in a wide variety of applications. The basic principles of the Fresnel lens are review­ ed and some practical examples are des­ cribed. There are definite advantages and tradeoffs that should be considered when deciding if a Fresnel lens is the appropri­ ate component to use in a design. Some basic optimization rules are presented which may facilitate a first order ...

Limits of ultra-high-precision optical astrometry: Stellar surface structures

Aims. To investigate the astrometric effects of stellar surface structures as a practical limitation to ultra-high-precision astrometry, e.g. in the context of exoplanet searches, and to quantify the expected effects in different regions of the HR-diagram. Methods. Stellar surface structures (spots, plages, granulation, non-radial oscillations) are likely to produce fluctuations in the integrat...

Ultra-high precision determination of site energy differences using a Bayesian method

B. A. J. Lechner,1,* P. R. Kole,1 H. Hedgeland,1,† A. P. Jardine,1 W. Allison,1 B. J. Hinch,2 and J. Ellis1,‡ 1Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom 2Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, USA (Received 12 April 2013; revised manuscript received 5 February 2014; published 10 Ma...