291 results about "Infrared reflectance" patented technology

A catheter based method and apparatus for reflectance generated absorption spectral analysis of chronic inflammatory vascular conditions such as seen with atherosclerotic plaque within a blood vessel or other body cavity or compartment. The use of a bright mid range infrared light (mid-IR) source yields detectable reflected optical signals that may be sampled from an area smaller or larger than the typical diameter of a mammalian cell. The mid-IR light is delivered at selected mid-infrared wavenumbers. Using the apparatus and methods, the reflectance spectra and reflectance generated absorption spectra of a target tissue can be compared to reference spectra to identify and distinguish normal epithelium from tissue containing physiological markers indicative of vascular disease or other inflammatory conditions.

Methods for classifying plants by remote sensing and image analysis technology are presented. These methods are useful for evaluating plants and for selecting plants for a plant breeding program which has as its goal to selectively alter phenotype. The methods combine the newer techniques of remote sensing technology to obtain indirect correlates of the traits of interest, with classical pedigree breeding strategies. Thermal and infrared reflectance measures of plant canopies are examples of energy values measured by remote sensing, used to indirectly predict the selected traits.

A film contains first and second metal or metal alloy layers separated by a crosslinked polymeric spacing layer whose thicknesses are such that the film is extensible visible light-transmissive and infrared reflective. The film can be joined or laminated into glazing (especially non-planar vehicular safety glazing) with reduced likelihood that the metal or metal alloy layers will be damaged or distorted.

This invention relates to a suede-like artificial leather using ultra-fine polyester fibers and a polyurethane, and provides a suede-like artificial leather free from the occurrence of specking and having graceful surface appearance and high light fastness. The suede-like artificial leather comprising a fiber-entangled substrate mainly containing ultra-fine polyester fibers with a fiber fineness of 0.7 dtex or less and a polyurethane, and is dyed, and is wherein said polyurethane contains at least one each of yellow pigments, red pigments and blue pigments, and that said artificial leather satisfies all of the following properties (1) through (3) as measured by the methods described in the specification; (1) The infrared reflectance at 850 nm is 60% or more; (2) The surface temperature during light irradiation is 105° C or lower; (3) The light fastness is class 3 or better. Especially since the suede-like artificial leather of this invention has high light fastness, it can be most suitably used for car seats.

The present invention relates to a heat filter and a process for manufacturing this filter.

This heat filter may for example be used to filter surgical or examination lighting composed of a light source which emits energy, or radiation, in the visible and infrared ranges. It allows the light emitted by this source to be filtered so as to prevent infrared radiation from hindering the surgical team or the patient.

It includes a substrate, at least one layer of an infrared reflecting material, and a coating forming an interference filter in the visible range.

The invention process includes the deposition on a substrate of a layer of an infrared reflecting material and the deposition on this layer of an interference filter in the visible range.

The present invention provides light valves including polarizing elements in which light transmission can be controlled by rotating at least one of the polarizing elements about an in-plane axis. Although reflective polarizing elements are preferred in devices according to the present invention to reduce the problem of heat build-up, the use of absorptive or other polarizers may also be envisioned. The polarizing elements may also include at least one reflective polarizer in combination with an infrared reflective material or an infrared absorptive material. The polarizing elements can be included in light valves to control light transmission by rotating at least one of the polarizing elements about an in-plane axis. The light valves according to the present invention may find use in any application in which the transmission of light (visible or otherwise) is to be controlled. Examples of specific applications include, but are not limited to: windows, luminaires, skylights, etc.

The invention provides low-emissivity coatings that are highly reflective of infrared radiation. The coating includes three infrared-reflection film regions, which may each comprise silver.

To provide a near infrared cutoff filter capable of suppressing an influence to a captured image when the incidence angle of light to the near infrared cutoff filter is large. The near infrared cutoff filter comprises a substrate to transmit at least light in the visible wavelength region and, on at least one side of the substrate, an infrared reflective layer constituted by a layered film having a high refractive index film H and a low refractive index film L repeatedly laminated, or a layered film having a high refractive index film H, an intermediate refractive index film M and a low refractive index film L′ repeatedly laminated, and has light transmittance characteristics such that the difference between the maximum value and the minimum value among the decrease rates in average transmittance in region R, region G and region B, is at most 0.05.

A thermal infrared sensor device includes a substrate having a concave portion, a temperature detecting portion connected to the substrate via a supporting leg held at an upper portion of a space within the concave portion, an infrared reflecting film covering at least a portion of the supporting leg without being thermally connected to the temperature detecting portion, and an absorbing hood portion held opposite the infrared reflecting film and thermally connected to the temperature detecting portion, without being thermally connected to the infrared reflecting film, and extending laterally, in a plate shape, covering at least a portion of the infrared reflecting film.

An infrared ray reflection pattern-printed transparent sheet is provided which can be applied to a data input system of a type of handwriting directly on a screen of a display device and provides a coordinate detect means and which is lightweight, low in a cost, readily increased in an area, possible in mass production and excellent in a read performance. It is an infrared ray reflection pattern-printed transparent sheet in which infrared ray reflective transparent patterns are printed on a surface of a transparent substrate and which is disposed oppositely to a front face of a display device. A cross section obtained by cutting the infrared ray reflective transparent patterns printed on the above transparent substrate in a face orthogonal to the above transparent substrate is formed so that it assumes a multilayer structure comprising a fixed repeating cycle when observed under a scanning electron microscope.

A beverage making system that includes a plurality of packs containing different beverage making ingredients and having different infrared reflectance spectra in a region thereof. A beverage making apparatus includes a station for receiving at least one of the packs; a source of liquid adapted to supply liquid into the at least one pack while the pack is located at the station; a system controller for controlling the supply of liquid from the source according to a beverage making program; and an infrared pack recognition system comprising an infrared light source for illuminating the region of the pack while it is located at the station. The apparatus also includes a detector for measuring an intensity of infrared light reflected from the region and for supplying an output signal to the system controller, whereby the beverage-making program is selected by the system controller in response to the output of the infrared pack recognition system.

An infrared radiation reflecting transparent layer system on a transparent substrate and a method for producing same is provided. The infrared radiation reflecting layer system comprises an infrared radiation reflecting layer sequence which includes a selective function usually consisting of a noble metal, mostly silver, or an alloy thereof and having a good selective reflectivity in the infrared range. The layer sequence is supplemented by at least one transparent dielectric layer of an oxynitride of a metal, a semiconductor or a semiconductor alloy having a low to moderate refractive index arranged directly on the substrate or above the infrared radiation reflecting layer sequence.

The invention discloses a venous visualizer and a visualizing method. The visualizer comprises an optical system for visualizing deep veins, and a liquid crystal display system, wherein the optical system comprises a near infrared light source and a venous image acquisition unit; the venous image acquisition unit is used for dividing reflected light into two paths so as to separate near infrared light from visible light; the near infrared light comprises information of deep veins (3 millimeters); after being subjected to image enhancement, the near infrared light is subjected to image fusion with a visible light image, and a fused image is displayed on the liquid crystal display screen for a doctor to refer to during venipuncture. Due to the adoption of a dynamic frame-by-frame image fusion algorithm, a venous enhanced image obtained by near infrared light activation can be overlapped on an ordinary image in real time, and an entire venipuncture process can be displayed completely on the liquid crystal screen.

The invention relates to an infrared-reflective material which comprises a transparent sheet material which comprises, on a part-area, an interference pigment which has higher transmission in the visible region of global radiation than in the NIR region, to a method for screening an enclosed area against infrared light, and to the use of the infrared-reflective material for buildings, vehicles and greenhouses while simultaneously maintaining the ability of the human eye to see through the material.

The invention discloses a method and device for detecting the wearing state of a wearable device. The method includes: detecting the distance between the wearable device and the surface of the human body; Wear a wearable device; when it is detected that the distance is not less than the threshold, detect whether the original value of infrared reflection of human skin is between the minimum and maximum threshold of infrared reflection; detect that the original value of infrared reflection is between the minimum and maximum threshold , detect whether the original value of green light reflection of human skin is between the minimum and maximum threshold of green light reflection; detect whether the original value of green light reflection is between the minimum and maximum threshold, detect whether the green light waveform of human skin has Whether the waveform is regular and the frequency is within the normal heart rate range of the human body; if the waveform is detected to be regular and the frequency is within the normal heart rate range of the human body, it can be judged that the human body is wearing a wearable device, so as to achieve accurate detection of the wearing state of the wearable device.

The present invention discloses an infrared reflection device based on electrical response and a preparation method thereof. Chiral doping agent, chiral monomers, photoinitiator, ultraviolet absorbent are mixed with negative liquid crystal to obtain a liquid crystal mixture, the liquid crystal mixture is disposed between two light transmission substrates to which voltage can be accessed, ultraviolet light irradiates a liquid crystal cell from one side of the first light transmission substrate, the photoinitiator drives the chiral monomers to polymerize a chiral polymer network under the effect of the ultraviolet light, the generated chiral polymer network concentration has a concentration gradient, namely the chiral monomer concentration has a concentration gradient, so that a pitch gradient of a negative liquid crystal helical structure is formed, and a wide bandwidth for reflecting infrared light can be obtained. The chiral polymer network can capture impurity cations in the liquid crystal mixture, when the substrates are powered, the impurity cations drive the chiral polymer network to move, so that the chiral monomer concentration gradient is decreased, the pitch gradient is decreased, and the purpose of changing the bandwidth from wide to narrow is achieved.