An illumination system generating light having at least one wavelength within 200 nm a plurality of nano-sized structures (e.g., voids). The optical fiber coupled to the light source. The light diffusing optical fiber has a core and a cladding. The plurality of nano-sized structures is situated either within said core or at a core-cladding boundary. The optical fiber also includes an outer surface. The optical fiber is configured to scatter guided light via the nano-sized structures away from the core and through the outer surface, to form a light-source fiber portion having a length that emits substantially uniform radiation over its length, said fiber having a scattering-induced attenuation greater than 50 dB/km for the wavelength(s) within 200 nm to 2000 nm range.

A soilless system for high density plant growth includes a greenhouse structure; at least one elongate support member arranged substantially vertically in the greenhouse structure, the support member having a body having a flow channel defined therein; and a plurality of vertically spaced apart receptacles angularly disposed to the vertical axis of the body to receive a plant therein, the receptacles being in fluid communication with the flow channel; a fluid supply system in fluid communication with the flow channel to supply a fluid stream to the flow channel; and a fluid collection system to collect residual fluid that has flowed through the flow channel.

A soilless system for high density plant growth includes a greenhouse structure; at least one elongate support member arranged substantially vertically in the greenhouse structure, the support member having a body having a flow channel defined therein; and a plurality of vertically spaced apart receptacles angularly disposed to the vertical axis of the body to receive a plant therein, the receptacles being in fluid communication with the flow channel; a fluid supply system in fluid communication with the flow channel to supply a fluid stream to the flow channel; and a fluid collection system to collect residual fluid that has flowed through the flow channel.

The present application discloses a surgical lamp. The surgical lamp includes a light source, a housing, and a heat sink into which heat from the light source is transferred. The housing includes a thermal insulating shell substantially surrounding the heat sink, and a plurality of ports that enable to airflow to dissipate the heat transferred to the heat sink.

A method to facilitate the reduction of solar radiation impacting Earth proposes the use of a plurality of porous particles that are introduced into Earth's stratosphere at an average distance of at least 10 kilometers above sea level. Each porous particle has a continuous polymeric phase composed of an organic polymer, and discrete pores dispersed within the continuous polymeric phase. Each porous particle has a mode particle size of 2-20 μm; a coefficient of variance (CV) of no more than 20% compared to the mode particle size; and a porosity of 20%-75%. The discrete pores have an average pore size “d” (nm) that is defined by 0.3≤d/λ≤0.8 wherein λ is 400-3,000 nm. Each of the discrete pores of the porous particles is filled with air and optionally a pore stabilizing hydrocolloid that is disposed at the interface of the discrete pore and the continuous polymeric phase.

A method to facilitate the reduction of solar radiation impacting Earth proposes the use of a plurality of porous particles that are introduced into Earth's stratosphere at an average distance of at least 10 kilometers above sea level. Each porous particle has a continuous polymeric phase composed of an organic polymer, and discrete pores dispersed within the continuous polymeric phase. Each porous particle has a mode particle size of 2-20 μm; a coefficient of variance (CV) of no more than 20% compared to the mode particle size; and a porosity of 20%-75%. The discrete pores have an average pore size “d” (nm) that is defined by 0.3≤d/λ≤0.8 wherein λ is 400-3,000 nm. Each of the discrete pores of the porous particles is filled with air and optionally a pore stabilizing hydrocolloid that is disposed at the interface of the discrete pore and the continuous polymeric phase.

A phase difference control device comprises: a splitting polarizer splitting a light incident from a light source into a measurement light and a reference light, both of which are linearly polarized; a PEM imparting a phase difference to the measurement and reference lights to correspond to the spectrometry; a PEM driver supplying a modulation voltage to the PEM; a PEM control circuit inputting the reference light as a feedback signal and outputting a modulation control quantity signal to the PEM driver; and a CPU circuit monitoring the wavelength of the light in the splitting polarizer to input a wavelength variation as a wavelength signal, wherein the CPU circuit converts the wavelength signal to a feedforward signal which is output to the PEM control circuit; and the PEM control circuit performs arithmetic processing by the feedback and feedforward signals to output the modulation control quantity signal to the PEM driver.

An information processing apparatus includes a processor configured to acquire an image obtained by imaging a space by one imaging device fixed in the space, specify, in the image, a two-dimensional coordinate of a bright spot indicating light emission of a light emitting device moving in the space, acquire output information output by the light emitting device, and specify a three-dimensional coordinate in the space of the light emitting device based on the output information and the two-dimensional coordinate.

The present invention relates to a technique of improving responsiveness of a phase difference control device that can be employed in a CD spectrometer.

The phase difference control device comprises: a splitting polarizer 14 that splits a light incident from a light source 12 into a measurement light and a reference light, both of which are linearly polarized; a PEM 16 that imparts a phase difference to the measurement light and the reference light to correspond to the spectrometry; a PEM driver 18 that supplies a modulation voltage to the PEM 16; a PEM control circuit 24 that inputs the reference light as a feedback signal and outputs a modulation control quantity signal to the PEM driver 18; and a CPU circuit 26 that monitors the wavelength of the light in the splitting polarizer 14 to input a wavelength variation as a wavelength signal, wherein

the CPU circuit 26 converts the wavelength signal to a feedforward signal, and the feedforward signal is output to the PEM control circuit 24; and

the PEM control circuit 24 performs arithmetic processing by the feedback signal and the feedforward signal to output the modulation control quantity signal to the PEM driver 18.

The goal of the Spatial Environmental Control Unit as a continuation based on the Multifunctional Environmental Control Unit is to create a user friendly accurate analysis and control of heat transfer dynamics in a spatial area that is responsive to the thermal dynamics of the area of interest and accurate to maintain an acceptable level of thermal control as environmental and human biological conditions change without requiring excessive interruptions to the user for manual adjustment. The Spatial Environmental Control Unit (SECU) makes the current norm of an absolute temperature control approach for thermal control and human comfort obsolete. A COMFORT theory of relativity will now be the new norm. The proposed dynamic process of mapping and analyzing the thermal changes rapidly within the area of interest responds to the unpredictable thermal changes in environment better than the best static or learning process currently available. Even though the current learning process for thermal control makes periodic changes based on logged user preferences as a function of time, it still controls for extended time, periods with a single static temperature set point. Basically, a series of a series of static control sequences as a function of time. The proposed Spatial Environmental Control Unit incorporates the dynamics of analyzing real time thermal changes with timely feedback from the user.