31results about How to "Suppressed reflectivity" patented technology

An imaging optical system is provided with an optical plane, which at least includes one lens element and transmits an incoming light; and a reflection preventing structure, which is arranged at least at a section in a peripheral area around a center area which includes a center of the optical plane, on one or more optical planes. In the reflection preventing structure, structural units having a prescribed shape are periodically arranged in array at a pitch smaller than the shortest wavelength of light to be prevented from being reflected among the incoming light. The imaging optical system has a sufficiently suppressed reflectance on the optical plane, is easily handled and is excellent in mass productivity.

A thin film for a reflection film or for a semi-transparent reflection film, having a compound phase formed of at least one chemical compound selected from the group consisting of a nitride, an oxide, a composite oxide, a nitroxide, a carbide, a sulfide, a chloride, a silicide (excluding silicon), a fluoride, a boride, a hydride, a phosphide, a selenide and a telluride of aluminum, magnesium, tin, zinc, indium, titanium, zirconium, manganese and silicon, dispersed in a matrix formed of silver or a silver alloy. The thin film may disperse at least one compound selected from the group consisting of a nitride, an oxide, a composite oxide, a nitroxide, a carbide, a sulfide, a chloride, a silicide, a fluoride, a boride, a hydride, a phosphide, a selenide and a telluride of silver, gallium, palladium or copper, in addition to aluminum or the like, therein. The thin film of the present invention keeps its reflectance without significant loss even after a long period of use, and can prolong the life of various devices which comprise the thin film as a reflection film, such as an optical recording medium and a display. The thin film can be also applied to semi-reflective / semi-transparent film used in the optical recording medium.

The present invention relates to an antireflection article of which the first surface has sufficient abrasion resistance and can suppress reflectance to a low level throughout the visible light region, and a display device. The present invention relates to an antireflection article that has light transmittance, in which a plurality of convex portions are disposed on a first surface positioned at a visible side and a second surface opposite to the first surface, the average gap of the convex portions is 400 nm or less, the ratio (H1 / W1) of the height H1 of the convex portions and the width W1 of the bottoms of the convex portions is 1.3 or more, in the first surface, and the ratio (H2 / W2) of the height H2 of the convex portions and the width W2 of the bottoms of the convex portions is larger than the ratio (H1 / W1), in the second surface.

An insulating film is formed on a main surface of a substrate. A conductive film is formed on the insulating film. A lower layer resist film, an intermediate layer, an anti-reflection film and an upper layer resist film are formed on the conductive film. A focal point at a time of exposure is detected by detecting a height of the upper layer resist film. In detecting the focal point at the time of exposure, a focal point detection light is radiated on the upper layer resist film. After detecting the focal point, the upper layer resist film is exposed and developed thereby to form a resist pattern. With the resist pattern as a mask, the intermediate layer and the anti-reflection film are patterned, and the lower layer resist film is developed. With these patterns as a mask, the conductive film is etched thereby to form a gate electrode.

The invention discloses a non-contact dynamic measurement system for torque of a rotating shaft based on a high-precision key phase, which includes: spraying or pasting a group of first coding stripes at a fixed distance on the rotating shaft to be measured, which are black and white coding stripes at equal intervals; And spray or paste the second code stripe near any one of the first code stripes, which has only one white stripe, and the second code stripe is used as a key phase signal; facing each code stripe, install a fiber-optic timing sensor respectively , the probe of each sensor is equipped with a focusing lens to collimate the outgoing light, and the beam diameter is small; the fiber-optic timing sensor corresponding to the second code stripe is used as a synchronous key phase; the fiber-optic timing sensor receives the reflected light signal of the white stripe , the reflected light signal is converted into a timing pulse through a signal processing circuit, and then processed through a high-speed and high-precision timing acquisition card input controller. The invention solves the problem that the existing dynamic torque measurement of the rotating shaft is not applicable in the actual field.