Hand-Held Hemispherical-Dome Emissivity and Reflectance Sensor

"Physical Optics Corporation (POC) proposes to develop a new hand held Hemispherical-dome Emissivity And Reflectance (HEAR) sensor to measure both integrated and bi-directional angular reflectance of installed materials on curved and flat surfaces. HEARcontinuously maps reflectance in terms of both direction and spectrum. It is a new design with unique integration of several commercially available components: a fiber-delivered portable broadband radiation source, a miniature hemispherical dome withdistributed multi-channel hollow fiber detector outlets, a new compact stacked Rowland spectrometer with multiple layers of hollow waveguides to generate spectrally resolvable reflectance, an uncooled detector array to detect the IR spectrum for eachangle, and new software to transform the linear detector array signals to 3-D hemispherical plots and compute the surface emissivity and reflectivity. This accurate, compact, portable, lightweight measurement device will lead to a new generation ofminiaturized reflectance/emissivity sensors. It can be operated with a PC in the field, and will detect reflectance/emissivity on curved surfaces in the naval environment. In Phase I, we will develop the concept of this miniaturized reflectance/emissivitysensor for field use without surface curvature limitations. In Phase II we will fully develop the sensor and build an adaptable, portable model. The portable HEAR sensor for measuring infrared prope