This PDF file contains the front matter associated with SPIE Proceedings Volume 12741, including the Title Page, Copyright information, Table of Contents and Conference Committee list.

Infrared imaging devices play an important role in many fields. Infrared technology’s consumer applications are expected to expand. However, only a few optical materials can be used in the infrared region. Although germanium has excellent properties, it is unsuitable for the mass production of optical elements. Chalcogenide glass can be press-formed and exhibits high productivity; however, its transmission and other optical properties are not as good as those of germanium. Therefore, we invented an original chalcogenide glass material named FI-02 and developed optical elements using this material. FI-02 has excellent infrared transmission properties with a wider transmission wavelength range than germanium, and its refractive index of 3.4 at a wavelength of 10 m is a very high value as a glass material. Because FI-02 can be press-molded at low temperatures, it is ideal for the mass production of optical elements, such as aspherical lenses. Lens units for a far-infrared (FIR) camera made of FI-02 produce clearer, higher-contrast infrared images by taking advantage of the unique optical properties of the material. Furthermore, we present large-diameter lenses and diffractive elements for aerospace applications as examples of developments that capitalize on the properties of FI-02

We report on the electromagnetic interference shielding (EMIS) effectiveness of a silver Ag nanoparticle guest deoxyribonucleic acid (DNA)-based biopolymer host EMIS nanocomposite material. An EMIS effectiveness in-excess-of -100dB was achieved over a frequency range of 8.2 GHz to 12 GHz and more than -80 dB was achieved over a frequency range of 1 GHz to 2 GHz. Film thicknesses measured only 150 m.

Fluorescence from exciplex formed by N,N’-bis(3-methylphenyl)-N,N’-diphenylbenzidine (TPD) and 2-(4-biphenyl)-5- (4-tert-butylphenyl)-1,3,4-oxadiazole (PBD) in inert polymer poly-methyl methacrylate (PMMA) was studied with fluorescence spectra and transient emission decay measurements. Equivalent weight of the donor and acceptor were incorporated into the matrix with various ratio (5 ~ 80 wt%), showing emission composed of exciplex and the donor molecule. Emission decay curves were well fitted with bi-exponential functions which was derived by a model including exciplex decay and back-and-forth transition to non-emissive states as triplex exciplex. Parameters for decay and intersystem crossing and reverse intersystem crossing was obtained. Their dependence on dopant concentrations indicated that the exciplex formation process was strongly affected by nominal intermolecular distance. The results indicated that in highly concentrated films, donor and acceptor in the samples separately made nano-aggregation with the same types of molecules.

Metalenses pave the way for drastic miniaturization of imaging systems like electric vehicle cameras, phones, and various other micro-camera applications1 . As an example, researchers in the U.S. used semiconductor manufacturing techniques to produce a large aperture, flat metalens. It was used as the objective lens in a simple telescope. The telescope achieved resolving power superior to refractive and reflective optics and produced clear images of the surface of the Moon2 . Though metalenses are a promising advance in scaling down the size of optical systems, there are challenges, both in their design and preparing them for high volume manufacturing. In this paper, we demonstrate the advantage of a manufacturing aware design flow that combines advanced technology from optical design and manufacturing processes design software that brings a manufactured metalens closer to the ideal metalens performance. The flow aids the implementation of design rules from and to optical and manufacturing design, allows the designer to shorten the design cycle, and ultimately stives for the target of a first design correct metalens.