Santec LLC | Date: 2013-08-27
A portable, self-contained toilet is provided that does not require water, and produces its own energy without the need for an external source of power. The toilet includes and external housing for providing protection from environmental elements to components of the toilet and to human users of the toilet. A toilet bowl directs liquid and solid waste into a collection hopper. Once the hopper is full, a turntable or other rotary device is indexed to advance the waste filled hopper to an intermediary position. From there, the hopper is moved onto a burner, where the collected human waste is separated into liquid and solid waste. As a result of heating, the liquid waste turns to steam and is removed from the hopper, collected, filtered and the resulting distilled water stored. The remaining solid bio-fuel may be removed and disposed of or used as needed. Solar panels and batteries provide power to the toilet may be replaced with an alternate energy source providing the same inherent energy requirements to the process.
Santec Corporation | Date: 2015-03-06
External cavity lasers with single mode-hop-free tuning are generally described. In an example, an external cavity tunable laser system includes an external cavity, a substrate, a chirped grating reflector, and a tunable filter. The substrate has a gain region disposed on the substrate and also includes an active waveguide. The external cavity tunable laser system has a cavity length of the external cavity tunable laser system that is defined by at least a first length of the chirped grating reflector, a second length of the gain region, and a third length of the tunable filter. The cavity length also has an inherent external cavity longitudinal mode. Further, the tunable filter and the chirped grating reflector are configured to synchronize to the inherent external cavity longitudinal mode over a tuning range of the tunable filter.
Santec Corporation | Date: 2013-07-05
A wavelength selective optical switch includes an incidence/emergence unit that includes an input port at which signal light made up of light of numerous wavelengths is incident and an output port at which light signals of selected wavelengths are emergent, a wavelength dispersion element that spatially disperses signal light according to a wavelength of the signal light, and synthesizes reflected light, a condenser element that condenses light dispersed by the wavelength dispersion element on a two-dimensional plane, a space phase modulator arranged so as to receive incident light deployed on an xy plane made up of an x-axis direction deployed according to wavelength and a y-axis direction orthogonal to the x-axis direction, and having numerous pixels arranged in a lattice on the xy plane, and a space phase modulator drive unit.
Santec Corporation | Date: 2012-10-01
A wavelength selective optical switch device includes an incidence and exit part where a signal beam made of light of a multiplicity of wavelengths enters and a signal beam of a selected wavelength exits, a wavelength dispersion element that spatially disperses a signal beam according to the wavelength thereof and multiplexes reflected light, a condensing element that condenses the light dispersed by the wavelength dispersion element onto a two-dimensional plane, and a wavelength selection element that uses a multilevel optical phased array arranged in a position to receive incident light developed on an xy-plane made of an x-axis direction and a y-axis direction perpendicular thereto developed according to a wavelength, having a multiplicity of pixels arrayed in a lattice on the xy-plane, and that cyclically changes the phase shift amount in the y-axis direction to a sawtooth wave pattern for each pixel on the x-axis.
Santec Corporation | Date: 2015-05-27
Methods and devices for accurate noninvasive measurement of blood analyte concentrations are disclosed. In an example process, optical properties of a blood vessel proximate to the surface of an exposed body part, for example, the sclera or the backside of the eye lid, is measured. Analyte concentrations are determined based on the measured optical properties.