50results about How to "Improve optical precision" patented technology

An image processing apparatus includes an input unit to which an image of an object picked up by an image pickup device is input, a display device on which the image is presented, an image presenting unit configured to present the image on the display device; a viewpoint detecting unit configured to detect a viewpoint position of a user, and a control unit configured to supply, to the image presenting unit, the image in an area extracted corresponding to an image frame of a display surface of the display device when the image is viewed through the display surface from the viewpoint position of the user detected by the viewpoint detecting unit.

An optical signal quality monitoring apparatus includes an optical detector for directly receiving an optical signal modulated in an optical path and converting the optical signal to an electric signal, an asynchronous sampling unit for asynchronously sampling the electric signal of the optical detector at a reduced speed, and a digital signal processor for monitoring an optical signal quality by finding a synchronized amplitude histogram of data sampled in the asynchronous sampling unit. An optical signal quality monitoring method includes (a) a step of allowing an optical detector to directly receive a modulated optical signal and to convert the optical signal to an electric signal; (b) a step of allowing an asynchronous sampling unit to asynchronously sample the electric signal; and (c) a step of allowing a digital signal processor to monitor an optical signal quality by generating a synchronized amplitude histogram of sampled data.

The invention provides a curved mirror reflector (2), which comprises a flat glass structure (6), a middle bonding layer (7) and a flat glass mirror (8), wherein the flat glass structure (6) and the flat glass mirror (8) are processed by non-edging and/or non-tempered common glass; the middle bonding layer (7) is located between the flat glass structure (6) and the flat glass mirror (8), and is bent and deformed under support of a mould through a mechanical manner, and the bent and deformed flat glass structure (6), the middle bonding layer (7) and the flat glass mirror (8) are solidified and bonded to a composite curved surface structure through a heating and/or normal-temperature solidification manner. The curved mirror reflector (2), provided by the invention, can be widely applied in all kinds of fields of solar thermal collection and focus and solar thermal power generation.

The invention relates to an integrated laser cleaning photoelectric system. The system comprises a laser device used for emitting a laser beam for cleaning, an online monitoring assembly used for monitoring the laser cleaning process online, a spectral analysis assembly used for analyzing product components in the laser cleaning process, and an optical assembly used for guiding the laser beam of the laser device to be emitted to the surface of a to-be-cleaned sample. The optical assembly can simultaneously guide spectral signals radiated outwards from the surface of the to-be-cleaned sample tobe emitted to the online monitoring assembly and the spectral analysis assembly. The integrated laser cleaning photoelectric system can be used for online monitoring of the laser cleaning process andonline analysis of additional products, so that accurate control over the laser cleaning process is achieved, and the purpose of high-precision and high-efficiency laser cleaning is achieved.

The manufacture process of superthin high-refractivity optical resin lens includes the following steps: making mold, reinforcing treatment and closing mold with tape machine; weighing chemical monomer and initiator, mixing and vacuum deairing; depositing the mixture in the mold, curing to form, demolding and cleaning. The present invention features the chemical monomer with one kind of alkenyl radical containing organic compound additive, the initiator being tert-butyl peroxide, the ratio among the chemical monomer, the additive and the initiator of 100 to 0.1-0.3 to 0.7-0.9, computerized temperature control during the polymerization, and the secondary curing of lens after demolding and cleaning. The present invention eliminates the lens profile variation caused by the polymerization and raises the optical precision of the lens.

Disclosed are a light sensitive composition containing A) an addition polymerizable ethylenically double bond-containing monomer, B) a photopolymerization initiator, and C) a polymer binder, wherein the addition polymerizable ethylenically double bond-containing monomer is a reaction product of a tertiary amine having two or more hydroxyl groups in the molecule, a diisocyanate having an aromatic ring in the molecule and a compound having a hydroxyl group and an addition polymerizable ethylenically double bond in the molecule, and a light sensitive planographic printing plate precursor comprising the light sensitive composition.

The invention discloses a free-form optical reflector for an LED (light-emitting diode) motorcycle high beam, wherein an internal surface of the reflector is a free-form surface to form an optical reflecting surface; the bottom surface of the reflector is an opening; an LED light source is installed at the centre of the opening; one end rightly facing the bottom surface is a light exit port of the reflector; the minority of light emitted by the LED light source directly shines on an illuminating surface, and the majority of the light is reflected by the internal surface of the reflector and then is emergent to the illuminating surface. The light energy emitted by the LED light source is emergent after being reflected by the freeform reflector, so that the loss is reduced and the utilization rate of light energy is improved. The reflector is small in size and has a low glare effect and meets the light distribution requirements in GB5948-1998. In addition, a heat-radiating device and the LED light source are conveniently installed, and the heat dissipation efficiency of the overall lamp is favorably improved.

A headlight optical axis adjustment method is provided in which, on an imaged picture of a light distribution pattern of low beam illumination from a master headlight whose optical axis has been adjusted, a relative positional relationship between a horizontal line (36a) and an oblique line (30b) of a light/dark boundary line (36), and a reference point (BP) determined on the imaged picture so as to correspond to a bulb center (C) is determined, and an acceptance frame (38) is set based on an imaged position of an intersection point (36c) of the horizontal line (36a) and the oblique line (36b); on an imaged picture of a light distribution pattern of low beam illumination from a headlight to be adjusted, a horizontal line and an oblique line of a light/dark boundary line are detected based on a relative positional relationship with the reference point (BP), and the optical axis of the headlight to be adjusted is adjusted so that an intersection point of the detected horizontal and oblique lines is present within the acceptance frame (38), thus enhancing the precision of the headlight optical axis adjustment.

The present invention discloses a solar energy disc-type collection lens system. The system comprises a solar energy disc-type collection lens and a heat absorber located near the focal plane of the solar energy disc-type collection lens, the solar energy disc-type collection lens is formed by splicing M spherical mirrors, the reflection surfaces of the spherical mirrors are quadrangle curved surfaces, the four vertexes of the quadrangle curved surfaces are located at the same paraboloid of revolution, and the orthographic projections of the M spherical mirrors on tangent planes passing through the vertexes of the paraboloid of revolution are square and have the same area. The present invention discloses the method of the solar energy disc-type collection lens system. The spherical mirrors with easy processing are processed to reduce the number of the reflection mirror units and the number of manufacturing dies, reduce the processing and manufacturing cost and improve the optical precision; the deformation errors are little and optics stability is high caused by the environment and other factors; and moreover, the light spot uniformity is high, and the shape is easy to regulate.

The die is comprised of a die base material consisting of a sintered hard alloy or silicon carbide, a surface layer formed on the surface of the die base material and brought into contact with a glass material in press molding, and an intermediate layer formed between the die base material and the surface layer. The surface layer is formed from at least one element selected from among platinum, palladium, iridium, osmium, ruthenium, and rhenium or an alloy or compound containing these elements. The intermediate layer has a surface base material layer which consists of at least a substance selected from among tungsten, carbon, tungsten carbide, and silicon carbide, is in an amorphous state or in a crystalline state with a crystal grain diameter smaller than that of the substance constituting the die base material, and is brought into contact with the surface of the die base material.

The invention discloses a free-form optical reflector for an LED (light-emitting diode) motorcycle low beam, wherein an internal surface of the reflector is a free-form surface to form an optical reflecting surface; the bottom surface of the reflector is provided with an opening for installation of an LED; one end rightly facing the bottom surface is a light exit port of the reflector; the majority of light emitted by the LED light source is reflected by the internal surface of the reflector and then is emergent to an illuminating plane, and the other light is directly emergent to the illuminating plane. The reflector is divided into an upper part and a lower part; the free-form surface at the upper part of the internal surface of the reflector is mainly used for reflecting the light above a horizontal plane to the illuminating plane below the horizontal plane; the free-form surface at the lower part of the internal surface of the reflector is mainly used for gathering diffused light below the horizontal plane to the illuminating plane below the horizontal plane. The free-form optical reflector for the LED motorcycle low beam has the characteristics of simple structure, convenience in installation and high utilization rate of light energy; light direction can be effectively controlled and the glare effect can be inhibited; and the free-form optical reflector for the LED motorcycle low beam meets the light distribution requirements in GB5948-1998.

A surface of the single crystal wafer 5 for semiconductor laser having an orientation flat formed by cleaving is polished by using the abrasive cloth 8 with high hardness under the optimized pressure for pushing the wafer and polishing rate, such that the polishing rate on the whole surface of the respective wafer 5 becomes uniform. The facet roll-off D occurred at a ridge of a cleavage surface 4 of the single crystal wafer 5 for semiconductor laser to be equal to or less than 40 μm. The single crystal wafer for a semiconductor laser of the present invention can provide an improvement in a precision of an optical alignment of mask pattern using the cleavage surface as a reference, and an improvement in process yield.

The invention provides an optical element molding method based on a graphene-like electrothermal film. The method includes the following steps: a surface of a pressing surface of a first pressing moldis provided with a microstructure mode cavity, and a surface of the microstructure mode cavity is plated with the graphene-like electrothermal film; the graphene-like electrothermal film is energizedand heated; the heat-generating graphene-like electrothermal film and an optical element blank material are contacted; after receiving the heat from the graphene-like electrothermal film by heat conduction and softening and deforming, the micro-structure mode cavity is filled with the optical element blank material; and the optical element blank material deformed according to the microstructure mode cavity is cooled and shaped by a cooling channel in a second pressing mold to form a lens. The method adopts the graphene-like electrothermal film for local heating, has high heating speed and high energy utilization rate, and the graphene-like electrothermal film has a low friction coefficient, can effectively prevent the adhesion between the blank material and the mold, and ensures the high-quality, high optical precision processing of the optical element surface.

An optical module includes a substrate that has a first surface and a second surface opposite to the first surface and provided with a first hole portion having an opening surface on at least the first surface, an optical element that is provided on the substrate, the optical element having an optical axis located along a thickness direction from the first surface toward the second surface and located in the first hole portion, and a first light shielding portion that is provided on an inner peripheral surface which intersects the opening surface of the first hole portion and has a higher light shielding property than the substrate.