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A triple bandpass filter (28 solutions received) and a nonpolarizing beam splitter (23 solutions received) were the subjects of the design contest held in conjunction with the 2007 Optical Interference Coatings topical meeting of the Optical Society of America. Fifteen designers participated using a wide spectrum of design approaches and optimization strategies to create the submissions. The results differ significantly, but all meet the contest requirements. Fabien Lemarchand wins both contests by submitting the thinnest (6254 nm) triple bandpass design and the widest (61.7 nm) nonpolarizing beam-splitter design. Michael Trubetskov is in second place, followed by Vladimir Pervak in both contests. The submitted designs are described and evaluated.

The aim ofthis project was to determine thefeasibility of developing sensory stimulation products for the Alzheimer's-type dementia patients exhibiting "null" behavior in order to increase their quality of care and quality of life. The research subjects were selectedfrom a population of49 residents living on a special dementia unit in a 228-bed nursing home. This population represented a cross section of the local community, inclusive ofwomen and minorities. Sensory satisfying objects were determined through structured observations ofpatients in the institutionalized setting to meet criteria ofsafety and effectiveness for patient use and caregiver implementation. The results clearly show the feasibility of developing such productsfor use in nursing homes, adult day carefacilities, Alzheimer s carefacilities andprivate homes.

We describe the design and contrast measurement results of a high performance contrast enhancer for an LCoS‐based projection display that has these attributes: complete a/c‐plate compensation, accurate retardance targeting, excellent retardance magnitude and axis uniformity and environmentally durable. An overall system contrast of more than 4500:1 under f/2.4 cone illumination has been obtained.

The NASA OVIRS spectrometer provides high resolving power spectra over a broad wavelength region: 0.4-4.3 μm, in a compact assembly. Thick, complex blocker designs (up to 153 μm, 1839 layers) and precision manufacturing enable this performance.