Tucson, AZ, United States
Tucson, AZ, United States

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Schwertz K.,Edmund Optics Inc. | Bublitz A.,Edmund Optics Inc. | Sparrold S.,Edmund Optics Inc.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

Long wave infrared (LWIR) optical systems are prone to defocus with changes in temperature. IR refractive materials are more thermally sensitive compared to conventional visible glass due to their larger therm-optic coefficients. LWIR systems can be designed to be passively athermal (little or no change to focus with varying temperatures). Chalcogenide glasses provide additional material choices for IR lens designers. In particular, AMTIR5 has been engineered so its therm-optic coefficient matches the coefficient of thermal expansion (CTE) of aluminum, allowing for an athermal singlet. This paper explores the benefits of using engineered chalcogenide glass for color corrected, passively athermal systems. Initially, we present color corrected and passively athermal doublets that are designed with different materials and / or diffractive surfaces. Their thermal and color performance are cataloged for axial beams only. These are intended to be starting components, which readers may then insert into common design forms, such as Petzval, Double Gauss, Telephoto, and Inverse Telephoto. A F/1.3, 20° full field of view, aspheric Petzval lens design form is explored and the MTF is evaluated for -50°C to 85°C in an aluminum housing. From this design, we explore the tradeoffs between using chalcogenide versus crystalline materials, diffractive versus pure refractive surfaces, and engineered chalcogenide (AMTIR5) versus "catalog" materials. © 2012 SPIE.


Sparrold S.,Edmund Optics Inc.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2010

Aspheric placement in the Double Gauss form is re-evaluated. Two aspheric configurations are considered and their resulting aberration balances are studied and compared to an all spherical design. © 2010 Copyright SPIE - The International Society for Optical Engineering.


Fales G.,Edmund Optics Inc.
Laser Focus World | Year: 2013

Sputter coatings for laser mirrors and dichroic filters offer advantages over traditional coatings to designers creating systems that combine multiple lasers. Dichroic laser mirrors and filters can improve reflectivity and power, and extend the lifetime and usability of these components in new applications. Designers can combine them to create simpler, more efficient systems that contain fewer parts to maintain, replace, and stock. Designers must also be cautious of how sensitive the system may be to polarization. Outside of their designed range, the mirrors may become highly transmissive, and the extent of that transmissivity can vary from lot to lot. Thin-film dichroic coatings can be sputtered or thermally evaporated. Evaporation coating techniques, which use heat to disperse materials onto the glass, provide relatively soft coating layers with low bonding adhesion to the glass below.


Trademark
Edmund Optics Inc. | Date: 2016-09-08

Optical components, namely, lenses.


Trademark
Edmund Optics Inc. | Date: 2016-09-08

Optical components, namely, lenses.


Trademark
Edmund Optics Inc. | Date: 2013-05-14

Commercial and experimental grade optics and optical components, namely, magnifying lenses, magnets, spectral analyzers, lasers, microscopes, lenses, mirrors, prisms, beam splitters, polarizers, filters, diffusers, lens windows, eyepieces, and optical bench and positioning equipment in the nature of precision instruments for manipulation and positioning of microscopic objects. Mail order and online retail store services in the field of optics.


Trademark
Edmund Optics Inc. | Date: 2015-09-24

Optical components, namely, prisms, mirrors, lenses and filters; telescope objectives; optical component kits containing prisms, mirrors, lenses, and/or filters.


Trademark
Edmund Optics Inc. | Date: 2015-09-24

Optical components, namely, prisms, mirrors, lenses and filters; telescope objectives; optical component kits containing prisms, mirrors, lenses, and/or filters.


Trademark
Edmund Optics Inc. | Date: 2015-09-24

Optical component kits containing prisms, mirrors, lenses, and filters.


Trademark
Edmund Optics Inc. | Date: 2015-09-24

Optical component kits containing prisms, mirrors, lenses, and filters.

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