33 results about "Goniophotometer" patented technology

A diffusion film includes a transparent substrate and a diffusion layer. The diffusion layer shows a specific scattered light profile measured by a goniophotometer. In the scattered light profile, a ratio of an intensity of scattered light at an angle of 30° to an intensity of transmitted light at an angle of 0° is 0.01 to 0.2%.

The present invention relates to an artificial leather having nap very little oriented on the surface and having short fibers densely, and hence having a good nubuck-like look and hand, and also relates to a production process thereof. The present invention provides an artificial leather having a nap surface of ultra-fine fibers at least on one side, which is formed by applying an elastic polymer to an ultra-fine fiber-entangled substrate, characterized by being 0.3 g / cm<3 >or more in the apparent density of the artificial leather, being 0.5 mm or less in the nap length, and being 25% or less in the R value obtained from the goniometric reflectance distribution measured with the nap surface rotated from 0 degree to 180 degrees using a goniophotometer. The present invention also provides a process for producing a nubuck-like artificial leather, in which a sheet obtained by applying an elastic polymer to an ultra-fine fiber-entangled substrate is raised to produce a napped sheet, comprising the steps of applying an elastic polymer to an ultra-fine fiber-entangled substrate, substantially solidifying the elastic polymer, immersing the polymer-deposited fiber-entangled substrate into a swelling agent of the elastic polymer, to swell the elastic polymer, compressing the sheet in the normal direction of the sheet, removing the swelling agent by an aqueous solvent, and raising the sheet at least on one side.

A hemispherical goniophotometer is disclosed, in which two pivoting arms are articulated on a revolving rotating arm and are each fitted with a measurement head. The geometry of the arrangement is chosen such that the measurement heads can move along the envelope surface of a hemisphere during rotating of the rotating arm through 360° and pivoting of the pivoting arms through 180°.

A goniophotometer includes an arc reflector; a holder for positioning a light source at the center of the arc reflector; a stationary detector substantially disposed at the center of the arc reflector and aimed at an arc reflective surface of the reflector; a driving device for rotating the holder with respect to the reflector and the detector about an axis of the light source; and a computing unit configured to convert a detection result of the detector into a measurement value.

A goniophotometer has a main rotating table, a sync-rotating table, a luminaire rotating table and light detecting tubes (4-1, 4-2). The main rotating table has a main rotating axis (1-2) and a main mirror (1-4) reflecting the light from a luminaire under test (5). The sync-rotating table has a sync-rotating axis (2-2) and a sync-mirror (2-4) located in the reflection path of the main mirror (1-4). The sync-rotating axis (2-2) is coincident with the main rotating axis (1-2). The luminaire rotating table has a luminaire rotating axis (3-2) which can drive the rotation of the luminaire under test (5). The luminaire rotating axis (3-2) is perpendicular to the main rotating axis (1-2). The light detecting tubes (4-1, 4-2) are arranged in the emergent light path to detect the luminous intensity of the luminaire under test (5) in different direction.

An optical compensation film and a liquid crystal display characterized in that in a scattered-light intensity measurement for a film with an incident light with 90° in a scattered light profile of a goniophotometer, in the case of measuring so as to detect a scattered light intensity at the position of 130° from a light source, a difference in scattered light intensity between the case where a film slow axis is installed horizontally on a sample stand and the case where the film slow axis is installed vertically is 0.05 or less.

Provided is a phase difference film having an excellent front contrast. It is possible to measure a scattered light intensity of a film of a 90-degree incident light of a scattered light profile by a goniophotometer. Provided is a phase difference film characterized in that the difference between the scattered light intensity integration values obtained when the film delay phase axis is arranged horizontally and vertically on a sample table is 0.1 or below in measurement to detect a scattered light intensity at the position of 95 to 165 degrees from a light source.

The invention relates to a goniophotometer, including a first pedestal, a second pedestal and a computer system. The first pedestal includes an L-type light arm, a first holding arm, a second holding arm and a driving device. One end of the L-type light arrm is connected to a rotationg platform and arranged on a base; the first holding arm and the second holding arm are connected to the rotation platform and arranged at the other end of the L-type light arm; the driving device is coupled to the rotation platform. The second pedestal includes a laser positioning device, a spectrometer and a light source detection device. The spectrometer is arranged at back of the laser positioning device, the laser positioning device is arranged at the same axes with the spectrometer, the light source detection device is arranged over the spectrometer and the laser positioning device, and the computer system is coupled to the first rotation platform and the second rotation platform. In the goniophotometer provided in the utility model, the usage of the power line and the signal is reduced, the power consumed by the driver is reduced, and energy can be effectively saved.

An inkjet recording medium, including a support and an ink receiving layer formed on at least one face of the support, wherein the inkjet recording medium satisfies at least one of the following conditions (i) and (ii):(i) the arithmetical mean deviation of the assessed profile Ra, as specified in JIS-B-0601(2001), of a surface of the ink receiving layer, determined with an evaluation length of 2.5 mm and a cutoff value of 0.8 mm, is 0.3 to 1.2 μm, and the peak value (reflectance) of the surface of the ink receiving layer, as determined by a goniophotometer, is in the range of 30 to 80%; and(ii) the arithmetical mean deviation of the assessed profile Ra, as specified in JIS-B0601(2001), of a surface of the support, determined with an evaluation length of 2.5 mm and a cutoff value of 0.8 mm, is 0.3 to 1.5 μm, and the peak value (reflectance) of the surface of the support, as determined by a goniophotometer, is in the range of 20 to 80%.

A reflective transparent screen according to the present invention comprises a light diffusion layer which comprises a binder and microparticles. The reflective transparent screen has a total light transmission of 60% or more and a parallel beam transmittance of 50% or more. The transparent screen has the diffuse reflectance light brilliance profile measured with a goniophotometer characterized to satisfy the conditions A and B.

The goniophotometer with tracking mirror of the present invention includes a main mirror rotating table, a synchronous tracking rotating table, a lamp rotating table and a light detection device; when working, the lamp to be tested is fixed on the rotating shaft of the lamp, and when the main rotating shaft rotates, it drives The main reflector rotates, and the rotation of the synchronous tracking rotation axis drives the synchronous reflector to rotate synchronously with the main reflector. The rotation axis of the lamp drives the luminaire under test to rotate. The light detection device receives and measures the light distribution of the lamp under test. The goniophotometer adopts a synchronous mirror that rotates synchronously with the main mirror. The reflected light path of the synchronous mirror coincides with the axis of the synchronous tracking rotation axis. The reflected light is vertically incident on the light detection device, which can eliminate the directional pair test of the synchronous mirror. The influence of the result, and it is easy to set the stray light elimination diaphragm on the optical channel, the measurement accuracy is high, and the space occupied is small.

A liquid crystal display device includes first and second polarizers with absorption axes orthogonal to each other; first and second substrates between the first and second polarizers and at least one of which has a transparent electrode; and a twisted-nematic liquid crystal cell disposed between the first and second substrates, wherein a light scattering film is provided at a viewing side of the first and second polarizers and includes a support member and a liquid crystal layer composed of a liquid crystal compound, wherein the pitch of the liquid crystal compound ranges between 0.35 μm and 3 μm and is oriented at 45° relative to a liquid-crystal direction of the liquid crystal display device, wherein the liquid crystal layer has a thickness between 0.17 μm and 10 μm, and wherein a weighted scattering area ratio of a goniophotometer scattering profile of the light scattering film satisfies the following expression.S60 / (S0)2×1000>40S0=∑S0⁡(θ)×θ∑S0⁡(θ)S60=∑S60⁡(θ)×exp⁡(-0.2×θ)∑S60⁡(θ)

In the present invention, the gloss of a surface having a relief structure is measured, the ratio R / V (the diffuse regular reflection intensity R in this expression being the diffuse reflection intensity measured at an aperture angle of 1 degree by a goniophotometer in the direction of diffuse reflection when a visible light ray is radiated at an angle of 45 degrees from normal to a surface of anantiglare film having a relief structure, and the total V of the diffuse reflection intensity being the total of the diffuse reflection intensity measured at an aperture angle of 1 degree by a goniophotometer for each degree from 45 degrees to +45 degrees including 0 degrees with respect to the direction of diffuse reflection when a visible light ray is radiated at an angle of 45 degrees from normal to the surface of the antiglare film having a relief structure) of the diffuse regular reflection intensity R to the total V of the diffuse reflection intensity is evaluated, and an antiglare filmis manufactured. Through this method, an antiglare film having high contrast and antiglare properties can be manufactured with high productivity.

The invention relates to an optical thin plate, comprising a substrate whose at least one side has a light diffusion layer. When detected by goniophotometer, if the light is projected at 0-90 deg.C, the detected angle of highest outgoing light intensity is plus / minus 10 deg, especially applied to flat displays.

A gonio-spectroradiometer and a measuring method thereof. The gonio-spectroradiometer includes a light source rotating on a light source axis, a first integrating sphere revolving around the light source with respect to a revolving axis perpendicular to the light source axis with a fixed radius and including an entrance formed in a direction to see the light source, a light intensity modulator adapted to modulate light intensity of light received through the first integrating sphere according to the rotation amount of the revolving axis, and a detector adapted to measure output light of the light intensity modulator at each wavelength.

[Problem] Provided is a transparent screen which satisfies both the visibility of the projection light and the transmission light by anisotropically scattering and reflecting the projection light emitted from a light source.[Solving means] A transparent screen according to the present invention comprises a light diffusion layer including a binder and microparticles,said transparent screen having a scattered light brilliance profile characterized to meet the following conditions A to C:A: the emitted light relative brilliance in the 0° direction is from 50 to 95, when the entered light relative brilliance is 100;B: the emitted light relative brilliance in the ±5° direction is 1.1 or less, when the emitted light relative brilliance in the 0° direction is 100; andC: the emitted light relative brilliance in the ±50° direction is 0.0005 or higher, when the emitted light relative brilliance in the 0° direction is 100;when the brilliance is Y from the XYZ color system measured with a goniophotometer.