In part, the invention relates to a lens assembly. The lens assembly includes a micro-lens; a beam director in optical communication with the micro-lens; and a substantially transparent film. The substantially transparent film is capable of bi-directionally transmitting light, and generating a controlled amount of backscatter. In addition, the film surrounds a portion of the beam director.

Imaging catheter with integrated reference reflector

In part, the invention relates to optical caps having at least one lensed surface configured to redirect and focus light outside of the cap. The cap is placed over an optical fiber. Optical radiation travels through the fiber and interacts with the optical surface or optical surfaces of the cap, resulting in a beam that is either focused at a distance outside of the cap or substantially collimated. The optical elements such as the elongate caps described herein can be used with various data collection modalities such optical coherence tomography. In part, the invention relates to a lens assembly that includes a micro-lens; a beam director in optical communication with the micro-lens; and a substantially transparent film or cover. The substantially transparent film is capable of bi-directionally transmitting light, and generating a controlled amount of backscatter. The film can surround a portion of the beam director.

Miniature Optical Elements for Fiber-Optic Beam Shaping

Solar-reflective roofing granules having deep-tone colors are formed by coating base mineral particles with a coating composition including an infrared-reflective pigment. Color is provided by colored infrared pigment, light-interference platelet pigment, or a metal oxide.

Colored Roofing Granules With Increased Solar Heat Reflectance, Solar Heat-Reflective Shingles, and Process For Producing Same

In part, the invention relates to an image data collection system. The system can include an interferometer having a reference arm that includes a first optical fiber of length of LI and a sample arm that includes a second optical fiber of length of L2 and a first rotary coupler configured to interface with an optical tomography imaging probe, wherein the rotary coupler is in optical communication with the sample arm. In one embodiment, L2 is greater than about 5 meters. The first optical fiber and the second optical fiber can both be disposed in a common protective sheath. In one embodiment, the system further includes an optical element configured to adjust the optical path length of the reference arm, wherein the optical element is in optical communication with the reference arm and wherein the optical element is transmissive or reflective.

Multimodal imaging system, apparatus, and methods

Solar-reflective roofing granules having improved solar heat-resistance are formed by coating colored mineral particles with a coating composition including titanium dioxide nanoparticles.

Solar heat-reflective roofing granules, solar heat-reflective shingles, and process for producing same

A light-permeable, IR-reflecting body which contains a stiff, amorphous base material comprised of light-permeable plastic and IR-reflecting particles which are oriented parallel to the surface, said light-permeable IR-reflecting body having a transmissivity (T) in the visible range of 45-75%, an overall energy permeability (g) of 30-60%, and a T/g ratio of >1.15, and the IR-reflecting particles oriented parallel to the surface are disposed in a coating layer comprised of a transparent water-insoluble binder, which layer is 5-40 micron thick and adheres to the base material, wherewith red-reflecting particles with a layer of titanium dioxide 60-120 nm thick on a platelet-shaped carrier pigment are present in the aforesaid coating layer in the amount of 20-40 wt. % of said coating layer.

Infrared-reflecting bodies

Transparent, infrared-reflecting materials with a sun-protecting and heat-insulating action, such as plates, webbed plates or light domes, having a transmission in the visible region (T) from 45 to 75%, a total transmissivity (g) of 30 to 60% and a T/g ratio of > 1.15 can be produced from a stiff, amorphous base material of transparent plastic and a transparent coating material containing 20 to 40% by weight of red- and infrared-reflecting particles, which consist of a 60 to 120 nm thick layer of titanium dioxide on a platelet-shaped carrier pigment, by co-extrusion or coating, the infrared-reflecting particles in a 5 to 40 micrometres thick coating layer, adhering to the base material, of a transparent, water-insoluble binder being aligned parallel to the surface.

Infra-red reflecting material

The invention relates to optical diffuser plates (1) made of transparent plastics such as polycarbonate or polymethacrylate. Several thin strips (2) made of plastic B are inserted into plates made of transparent plastic A with the proviso that A and B are incompatible and the strips (2) made of plastic B are subsequently withdrawn. The hollows that are formed in the plate (1) made of plastic A are used to deflect light.

Optical diffuser plates

The height of the bulge in the glazing roll gap of a supercalender in the extrusion of plates or films of a thermoplastic material smoothed on both sides may be controlled by measuring the location of the edges of the plastic sheet by means of measuring sensors and regulating the speed of the roll or the rate of extrusion of the polymer melt based on the width of the sheet so that the height of the bulge is always kept within tight tolerances.

Method and apparatus for preparing thermoplastic sheets, films, and plates

Extruding plastic plate (10) with a finely textured surface (8) uses a co-extrusion plant (1,2) and a three-roll polishing stack (4,5,4'), one roll (5) of which has a textured surface (7). The coextruded plate consists of a high viscosity polymer forming a base onto which a lower viscosity polymer is extruded. A Fresnel lens mfd. by the process is claimed as is the use of the plastic plate (10) with a linear Fresnel lens surface structure (8) as a light collector in a solar heat panel. Also claimed is a solar heat panel including a tube for the heat transfer fluid and the claimed lens which directs the light onto the tube.

Michael Dr Meier-Kaiser

Papers

Infrared-reflecting bodies

Infra-red reflecting material

Optical diffuser plates

Method and apparatus for preparing thermoplastic sheets, films, and plates

Extrusion of plastic plate for Fresnel lens mfr.