Layered Chalcogenide Glass Structures for IR Lenses

被引：15

作者：

Gibson, Daniel ^{[1
]}

Bayya, Shyam ^{[1
]}

Sanghera, Jas ^{[1
]}

Vinh Nguyen ^{[1
]}

Scribner, Dean ^{[2
]}

Maksimovic, Velimir ^{[2
]}

Gill, John ^{[2
]}

Yi, Allen ^{[3
]}

Deegan, John ^{[4
]}

Unger, Blair ^{[5
]}

机构：

[1] Naval Res Lab, Code 5620, Washington, DC 20375 USA

[2] Northrop Grumman Syst Corp, Falls Church, VA USA

[3] Ohio State Univ, Columbus, OH USA

[4] Rochester Precis Optic, West Henrietta, NY USA

[5] ASE Opt, West Henrietta, NY USA

来源：

INFRARED TECHNOLOGY AND APPLICATIONS XL | 2014年 / 9070卷

关键词：

IR; chalcogenide glass; IR lens; molded optics; LWIR; multispectral optics; optical design; finite-element modeling; IR imaging;

D O I：

10.1117/12.2050479

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A technique for fabricating novel infrared (IR) lenses can enable a reduction in the size and weight of IR imaging optics through the use of layered glass structures. These structures can range from having a few thick glass layers, mimicking cemented doublets and triplets, to having many thin glass layers approximating graded index (GRIN) lenses. The effectiveness of these structures relies on having materials with diversity in refractive index (large Delta n) and dispersion and similar thermo-viscous behavior (common glass transition temperature, Delta Tg = 10 degrees C). A library of 13 chalcogenide glasses with broad IR transmission (NIR through LWIR bands) was developed to satisfy these criteria. The lens fabrication methodology, including glass design and synthesis, sheet fabrication, preform making, lens molding and surface finishing are presented

引用

页数：5

共 6 条

[1]

Bayya S. S., 2013, P SOC PHOTO-OPT INS, V8704

[2] Design of dual band SWIR/MWIR and MWIR/LWIR imagers [J].