50 results about "Dichroism" patented technology

This invention provides a liquid crystal light control element with which it is possible to achieve both an antiglare function and a heat generation suppression function. According to an embodiment, this liquid crystal light control element is characterized in that: the element includes a pair of transparent electrode substrates having a transparent electrode layer, and a light control layer disposed inside the transparent electrode substrates and containing liquid crystal molecules; the light control layer contains a dichroic dye; and the visible light transmittance of the transparent electrode substrates is 89% or less, and the visible light reflectance of the transparent electrode substrates is 6.5% or more.

The present invention provides an optical laminated film with an adhesive layer that prevents the inclusion of air bubbles near the edges when bonding to the surface of the substrate. [Solution] The adhesive-layered optical laminated film 1A comprises, in this order, a surface protective film 7, an optical laminated film 4A containing a polarizer 2 on which a dichroic dye is adsorbed and oriented, an adhesive layer 5, and a separator 6 that is peelably in contact with the adhesive layer 5. On at least a portion of the side surface of the adhesive-layered optical laminated film 1A, the adhesive layer 5 and the separator 6 protrude outward by 1 μm to less than 10 μm beyond the outermost position of the optical laminated film 4A, and the protruding portion of the adhesive layer 5 is curved upward by 1 μm or more towards the optical laminated film 4A. When the separator 6 is peeled off and the optical laminated film 4A is bonded to the surface of the adherend, the outermost edge of the adhesive layer 5 does not come into contact with the surface of the adherend first, and therefore air bubbles are less likely to be introduced.

The invention relates to a laminate. The purpose of the present invention is to provide a laminate capable of suppressing halo phenomenon while ensuring good brightness in a display device capable of local dimming. The solution of the present invention is a laminate comprising a low-reflection film and a functional layer, the low-reflection film having a visible light average reflectance of 0.05% to 5% and a total light transmittance of 93% or more, and the functional layer having an average reflectance of 0.05% to 5% and a total light transmittance of 93% or more. The functional layer is a film obtained by curing a liquid crystal compound and a dichroic dye in a state in which the liquid crystal compound and the dichroic dye are oriented in a direction perpendicular to the plane of the layer. The amount c (parts by mass) of the dichroic dye contained in the functional layer per 100 parts by mass of the liquid crystalline compound and the thickness t ([mu] m) of the functional layer satisfy the following formula (1): 5 < = c * t < = 40.

This application discloses a display panel, its manufacturing process, and a display device, relating to the field of display technology. The display panel includes a color filter substrate and an array substrate disposed opposite each other. The display panel also includes a liquid crystal composite layer, an electrode layer, an upper polarizer, and a lower polarizer. The liquid crystal composite layer is disposed between the color filter substrate and the array substrate. The liquid crystal composite layer includes liquid crystal molecules and dichroic dye molecules, with the absorption axis of the dichroic dye molecules perpendicular to the long axis of the liquid crystal molecules. The electrode layer includes a first electrode and a second electrode disposed on the array substrate. The first and second electrodes drive the liquid crystal composite layer, which includes a first state and a second state. The first and second electrodes control the switching of the liquid crystal composite layer between the first and second states. The display panel of this application achieves bright and dark states by controlling the switching of the liquid crystal composite layer between the first and second states through the electrode layer.

An image acquisition assembly for an optical instrument comprises a beam-splitting prism (30) with a light-entry surface (31), a dichroic reflective layer (32) or interface, a first light-emission surface (34) and a second light-emission surface (35), at least two image sensors (40, 50), and a mounting device. A first image sensor (40) is located at the first light-emission surface (34) of the prism (30), and a second image sensor (50) is located at the second light-emission surface (35) of the prism (30). The mounting device includes a first socket (60; 60'; 60") for mechanically rigidly connecting the first image sensor (40) to the prism (30) and a second socket (80; 80'; 80") for mechanically rigidly connecting the second image sensor (50) to the prism (30).The first version (60; 60'; 60") has at least one stop for abutting a first stop surface (36) of the prism (30) and for abutting a stop surface (46) on the first image sensor (40). The second version (80; 80'; 80") has at least one stop for abutting a second stop surface of the prism (30) and / or for abutting a stop surface (56) on the second image sensor (50), wherein a defined gap is provided between the prism (30) and the first image sensor (40) and / or between the prism (30) and the second image sensor (50). A defined gap is provided between the prism (30) and the first image sensor (40) and / or between the prism (30) and the second image sensor (50).

A spectrometer device comprises at least a first light source (10) emitting light in a first illumination wavelength range and at least a first spectral analyzer (26, 26a) adapted to analyze light in a first analyzer wavelength range. A dichroic first illumination mirror (16, 16a) is provided to reflect light in the illumination wavelength range from the first light source (10) towards a target (12). A dichroic first analyzer mirror (18, 18a) reflects light in the analyzer wavelength range that returns from the target towards the spectral analyzer (26, 26a). The first illumination mirror (16, 16a) is transmissive for light in the first analyzer wavelength range and the first analyzer mirror (18, 18a) is transmissive for light in the first illumination wavelength range. The first illumination mirror (16, 16a) intersects the first analyzer mirror (18, 18a).

This invention provides a diazobiphenyl dye for thin-film polarizers, which is an analog of AD1. Thin-film polarizers prepared using this dye exhibit good optical quality, such as low light scattering, high dichroism ratio, broadband absorption, and / or stability to heat and light irradiation. This invention also provides a method for preparing the diazobiphenyl dye from two different monoazo dyes via a cross-coupling reaction. This method is eco-friendly because it does not use toxic benzidine as a raw material. The product (diazobiphenyl dye) obtained by this method can be purified in a simple and convenient manner, and the diazobiphenyl dye prepared by this method can have a symmetrical or asymmetrical structure. Furthermore, this invention provides a thin-film polarizer comprising the diazobiphenyl dye and an apparatus for display applications comprising the thin-film polarizer.

The present invention relates to the technical field of dimming films, and particularly to a dye PDLC composition and a PDLC dimming film. Based on the total weight of the dye PDLC composition being 100%, the dye PDLC composition comprises the following components in percentage by weight: 35-66% of a liquid crystal composition, 3-7% of an anthraquinone-type dichroic dye, 30-60% of a polymer precursor, 0.05-3% of a photoinitiator, and 0.2-1% of a spacer. The polymer precursor comprises an oligomer and an active diluent with a mass ratio of 1:(2-7). The components of the dye PDLC composition provided by the present invention act synergistically, and the PDLC dimming film prepared therefrom has a high off-state haze, a low on-state haze, and a low driving voltage, and at the same time has excellent properties such as light absorption and heat insulation, a wide full-light dimming range, and color tunability.

The present invention relates to the technical field of dimming films, and in particular, to a dye PDLC composition and a PDLC dimming film. Based on the total weight of the dye PDLC composition being 100%, the dye PDLC composition comprises the following components in weight percentage: a liquid crystal composition 35-66%, an anthraquinone-type dichroic dye 3-7%, a polymer precursor 30-60%, a photoinitiator 0.05-3%, and a spacer 0.2-1%, the polymer precursor comprising an oligomer and a reactive diluent in a mass ratio of 1:(2-7). In the dye PDLC composition provided by the present invention, the components synergistically interact, and the PDLC dimming film prepared therefrom exhibits high off-state haze, low on-state haze, and low driving voltage, while also having excellent performance in light absorption and heat insulation, a wide full-light dimming range, and adjustable color.

The invention relates to the technical field of laser, and discloses a high-power yellow-green laser generation method, which comprises the following steps: generating pump light through a first seed source, and generating signal light through a second seed source; after the pump light and the signal light are mixed through the first wavelength division multiplexer, the pump light and the signal light are combined with the light of the first pump source in the beam combiner, and then are subjected to power amplification through the first ytterbium-doped optical fiber to obtain high-power laser; after collimation by the collimator and color separation by the first dichroic mirror, frequency doubling is carried out by the frequency doubling crystal, and finally, high-power yellow-green laser is output by color separation by the second dichroic mirror. The invention discloses an optical fiber laser for generating high-power yellow-green laser, which reduces the number of core devices in an optical path structure, simplifies the optical path structure and control logic, reduces the hardware cost and assembly debugging cost of equipment, and improves the production efficiency. The stimulated Brillouin threshold value of the laser is effectively improved, broadening in the spectrum amplification process is restrained, and meanwhile the stable and good time-domain characteristic can be kept.

The invention provides a light generating system (1000) comprising a first light source (10), a first quarter wave plate (721), a first polarization based beam director (1510), a reflective polarization maintaining diffuser (710), a first additional light source arrangement (1120), and a light exit (1090), wherein the first additional light source arrangement (1120) comprises a second light source (20), a first dichroic based beam director (1620), a second quarter wave plate (722), and a second polarization based beam director (1520). The light generating system (1000) is configured to generate in an operational mode of the light generating system (1000) system light (1001) comprising diffused first light source light (11d) and diffused second light source light (21d).

An optical device may include a light turning element. The optical device can include a first surface that is parallel to a horizontal axis and a second surface opposite to the first surface. The optical device may include a light module that includes a plurality of light emitters. The light module can be configured to combine light from the emitters, for example using at least one dichroic combiner and / or a light integrator. The optical device can further include a light input surface that is between the first and the second surfaces and is disposed with respect to the light module to receive light. The optical device may include an end reflector that is disposed on a side opposite the light input surface. The light coupled into the light turning element may be reflected by the end reflector and / or reflected from the second surface towards the first surface.

To provide an optical laminate fabricated using a dye-based polarizing film, which exhibits excellent haze reliability. [Solution] An optical laminate according to an embodiment of the present invention comprises, in this order, an absorbing polarizing member including an absorbing polarizing film, a resin layer, and a film member, wherein the absorbing polarizing film contains an organic dye exhibiting dichroism, the resin layer is directly adjacent to the absorbing polarizing film, and the elastic modulus of the resin layer at 85°C is 1.0 × 10⁻⁶. 6 It is Pa or higher.

A system for single photon absorption based vat photopolymerization additive manufacturing with photoinhibition induced curb and photoexcitation induced cure (SPA2CurbCure), comprising: a build chamber; a two-wavelength projection irradiation unit delivering a patterned photo-curbing exposure mask and a patterned photo-curing exposure mask, respectively, to create a curing region of initiating chemicals surrounded by a distribution of inhibiting species; wherein a curing light beam comprising light having a first wavelength and a curbing light beam comprising light having a second wavelength from the irradiation unit are manipulated into adjacent complementary exposures, combined by a dichroic beam splitter and collimated into a target resin material in the build chamber.

Techniques are provided for recycling polarization and managing color within a compact optical illumination architecture. An LED array is segmented by color channels and coupled to a condenser lens array to collimate and homogenize irradiance. A polarization-recycling prism includes internal polarization interfaces and dichroic coatings configured for complementary spectral routing across wavelength bands. A polarization assembly, disposed within or adjacent to the prism and including a retarder plate and reflector, is utilized to convert light reflected in a first polarization state to a second polarization state for transmission through the prism.

The present invention relates to an optical laminate (100, 110) comprising a first support (10), a second support (10), and a polarizing element (20) disposed between the first support (10) and the second support (10). The polarizing element (20) includes one or more dyestuff-based dichroic dyes having a dichroic ratio (Rd) of 38 or more at the maximum absorption wavelength (λmax). Furthermore, the optical laminate (100, 110) has a luminosity-corrected transmittance (Ys) of 43% to 55%, and a luminosity-corrected polarization degree (Py) of 78% to 85%.

The invention discloses a linearly polarized light detector based on surface acoustic waves, and a preparation method and a detection method thereof, and belongs to the technical field of optical detection. The linearly polarized light detector based on the surface acoustic wave comprises a piezoelectric substrate, wherein a photosensitive layer, an input interdigital transducer and an output interdigital transducer are arranged on the piezoelectric substrate; the input interdigital transducer and the output interdigital transducer are symmetrically arranged on the two sides of the photosensitive layer; wherein the photosensitive layer is of a composite heterojunction structure, and the composite heterojunction structure comprises a metal film layer, a flexible elastomer layer, a two-dimensional anisotropic semiconductor layer and a metal particle layer which are sequentially stacked from bottom to top. On the premise that the complexity and the preparation difficulty of the device are not remarkably increased, the linearly polarized light sensitivity of the two-dimensional anisotropic semiconductor material is effectively enhanced, the dichroism ratio of photo-generated current is improved, and passive and wireless polarization detection of visible light and near-infrared light is achieved.

An object is to provide a polarizing plate, a circularly polarizing plate, and a method for producing a polarizing plate, each of which can accomplish both of the antireflection effect for external light and an improvement in the utilization efficiency of light emitted by a light emitting element, in a case of being used in a self-luminous display device using an inorganic EL element, an organic EL element, or the like. The polarizing plate is a polarizing plate having an alignment film and a polarizer layer including a dichroic coloring agent, in which the polarizing plate has a plurality of through-holes that penetrate the alignment film and the polarizer layer, and the light transmittance in a portion where the alignment film and the polarizer layer are present is 80% or less.

An anastigmatic three-mirror telescope comprising at least one primary mirror (1), a secondary mirror (2) positioned in front of the primary mirror (1) such that the primary and secondary mirrors have optical surfaces (1.1, 2.1) opposite each other, a tertiary mirror (3) having an optical surface (3.1) opposite the optical surface (2.1) of the secondary mirror (2), and a first optronic sensor (10) positioned opposite the tertiary mirror (3). The telescope includes a second optronic sensor (20) positioned behind the secondary mirror (2) and the optical surface of the secondary mirror (2.1) includes a dichroic treatment (2') arranged to separate an incident light flux reflected by the primary mirror (1) into a first light flux reflected towards the first optronic sensor (10) via the tertiary mirror (3) and a second light flux transmitted to the second optronic sensor (20), the first and second light fluxes belonging to different spectral bands and the secondary mirror (2) being transparent to the spectral band of the second light flux. FIGURE IN ABRIDGED ANALYSIS: Fig. 1.

Provided is an optical module wherein a first prism is composed of a dichroic pentaprism that receives incident light on an incident surface and has five sides, at least a part of the incident light is reflected twice on a first side surface and a second side surface in the first prism, is emitted from an emission surface of the first prism, and is incident on a first imaging element, the first imaging element converts the incident light flux into an electric signal and extracts the electric signal as a first optical image, the incident light on the incident surface and the emission light from the emission surface are configured to be perpendicular to each other, a second prism receives transmitted light which is the other at least part of the incident light and is transmitted through a selected side surface of the first side surface or the second side surface in the first prism, and emitted from an emission surface of the second prism and made incident on a second imaging element, the second imaging element is configured to convert the incident light flux into an electric signal and extract the electric signal as a second optical image, and the first prism, the first imaging element, the second prism, and the second imaging element are integrated and arranged at the tip of a search scope.

The application relates to the technical field of electro-optical functional devices and smart materials, in particular to a smart light-adjusting vehicle window based on liquid crystal color-changing technology and a preparation method thereof. The vehicle window comprises a glass substrate, a transparent conductive layer, a liquid crystal composite material functional layer, a polyvinyl butyral interlayer and a packaging sealing structure. The glass substrate is subjected to chemical toughening treatment and is coated with the transparent conductive layer. A liquid crystal composite prepolymer containing liquid crystals, polymerizable monomers, dichroic dyes and modified nanoparticles is prepared. The prepolymer is coated, film-coated and pre-pressed to form a pre-assembled body. Polymerization is carried out by controlling the temperature and the ultraviolet light intensity in stages to construct a required microstructure. Edge sealing and hot-press laminating integration are carried out. The application solves the technical problem that traditional light-adjusting vehicle windows are difficult to simultaneously have high light transmittance, low haze, fast response and high contrast, the structure is reliable and the smart touch display can be integrated.

The application discloses a dark-field thermal wave confocal microscopic measuring device based on circular dichroism, which comprises the following steps: a time division multiplexing circular polarized light generating light path alternately generates left-handed circular polarized light and right-handed circular polarized light in the same period as thermal wave detection light; a thermal wave detection light shaping light path shapes the thermal wave detection light; a thermal wave pump light generating light path generates thermal wave pump light, and after the thermal wave pump light is modulated, the thermal wave pump light is combined with received thermal wave detection light to obtain combined light; a light beam illumination light path irradiates the combined light to a sample to be measured, and receives thermal wave reflection and scattering light; a dark-field balanced detection light path receives the shaped thermal wave detection light, extracts the scattering light of the thermal wave detection light in the thermal wave reflection and scattering light, and obtains a circular dichroism thermal wave dark-field signal according to the difference frequency signal between the reference light and the scattering light of the thermal wave detection light. The application can obtain the chiral information of various physical properties and micro-nano structures of sample defects.

Laminated glazing (1) with variable light transmission by liquid crystals comprising at least a first principal glass substrate (10), a second principal glass substrate (11), at least one liquid crystal cell (2) including dichroic dyes, the cell (2) being disposed between the first and second glass substrates (10, 11), and at least one UV filter (3) blocking UV up to 380 nm, characterized in that the laminated glazing further comprises a first filter element (5) that filters visible light in the wavelength range A from 380 to 450 nm, and a second filter element (6) that filters visible light in the wavelength range B from 451 to 700 nm, such that the laminated glazing, in its clear state at maximum light transmission, exhibits an average transmission T(A) of less than 30% over the wavelength range A, an average transmission T(B) of 0.1 to 40% over the B wavelength range,and colorimetric transmission coordinates a* from -6 to 5, preferably from -4 to 0, and b* from -5 to 5, preferably from -3 to 3.

The invention relates to a wound body. The present invention addresses the problem of providing a winding body for an optical laminate, the winding body being capable of suppressing adhesion of the optical laminate at an end portion of a winding shaft. The solution is that the winding body is a winding body formed by winding an optical laminated body. The optical laminate has a base material layer, a cured product layer of a curable composition formed on the base material layer, and a light-absorbing anisotropic layer formed on the opposite side of the base material layer from the cured product layer side. The light absorption anisotropic layer contains a polymer of a polymerizable liquid crystal compound and a dichroic dye, and has a light absorption axis in a direction perpendicular to the plane of the light absorption anisotropic layer. In a cross section orthogonal to the winding direction of the optical laminate, when A is the width of the base material layer, B is the width of the cured product layer, and C is the width of the light-absorbing anisotropic layer, the relationships of formulae (1)-(3) are satisfied. 0.90 < = B / C < = 1.10 (1), 0.90 < = B / Alt; 1.00 (2), 0.88 < = C / Alt; 1.00 (3).

The present application relates to liquid crystal dimming film technical field, disclose a kind of CWO@KSiO2 core-shell structure nanoparticle, dye liquid crystal dimming film and its preparation method and application.The liquid crystal dimming film, by weight fraction includes: small molecule liquid crystal 70~50 parts, polymerizable monomer 30~50 parts, CWO@KSiO2 core-shell structure nanoparticle 1~5 parts, dichroic anthraquinone dye 0.1~5 parts, photoinitiator 0.1~1 part and spacer particle 0.1~1 part.The dye liquid crystal dimming film doped with CWO@KSiO2 core-shell structure nanoparticle provided by the present application introduces CWO@KSiO2 core-shell structure nanoparticle, utilizes its core-shell synergistic effect, enhances the optical control performance of dimming film in visible light and near infrared wave band and the emissivity in mid-infrared wave band, simultaneously provides heat insulation and cooling function.The addition of dichroic anthraquinone dye gives the color tunability of dimming film, expands its potential in privacy and display field.

The present application relates to the technical field of light control film, and in particular to a high-contrast anthraquinone dye PDLC composition and light control film, which comprises dichroic dye liquid crystal, photocuring glue and spacer, wherein the dichroic dye liquid crystal comprises nematic liquid crystal and dichroic dye, and the dichroic dye at least comprises one compound selected from the following formula I, formula II, formula III, formula IV or formula V. The present application introduces a new type of anthraquinone dichroic dye with optimized molecular configuration, overcomes the defects of the existing dye in the degree of orientation and solubility, and improves the contrast of the anthraquinone dye in the liquid crystal. The PDLC light control film prepared from the composition has high contrast and excellent thermal / hue stability.

The purpose of this invention is to provide an optical laminate that exhibits low strain during bending, high flexibility, and excellent oblique reflectivity, particularly suitable for flexible displays. The optical laminate comprises, in sequence, a retardation film, a polarizer, and a transparent protective film, wherein the aforementioned retardation film contains a polarizer having a polarization density of 100 g / m². 2 A substrate film with a permeability of more than 24 hours and a liquid crystal curing film formed on the substrate film, wherein the thickness of the liquid crystal curing film is more than 0.5 μm and less than 3 μm, and satisfies the following formulas (1) and (2) in a single layer, wherein the aforementioned polarizer is composed of a polyvinyl alcohol resin film containing a dichroic pigment, the aforementioned transparent protective film has a total light transmittance of more than 90% and a 380 nm transmittance of less than 30%, and the aforementioned phase difference film, the aforementioned polarizer and the aforementioned transparent protective film are adjacent to each other through an adhesive layer. Re(450) / Re(550)≤1.00(1) 1.00≤Re(650) / Re(550)(2) [where Re(λ) represents the in-plane phase difference value at wavelength λ].

The invention discloses a particle array structure with spiral dichroism and a regulation and control method, and belongs to the field of chiral optics. The particle array structure comprises a plurality of precious metal nanoparticles; the precious metal nanoparticles are distributed in a spiral array, the distances from all the precious metal nanoparticles to a set axis are the same, and the precious metal nanoparticles can be conveniently processed on the side face of the optical fiber. Structural parameters of the spiral array are optimized on the basis of the surface lattice resonance effect, so that the whole structure can excite a strong resonance effect only under irradiation of vortex beams with selected topological charges and does not respond to other vortex beams. Different from the assumption that the spiral dichroism is enhanced by the monomer resonance effect of other single particle structures, the spiral dichroism is enhanced by utilizing the integral resonance effect of a multi-particle structure to generate different responses to vortex light with different topological charges, so that the spiral dichroism is enhanced, and the precise detection and regulation of chiral optical response are met.

This invention relates to the field of laser technology and discloses a method for generating high-power yellow-green laser. The method involves generating pump light from a first seed source and signal light from a second seed source. The pump light and signal light are mixed by a first wavelength division multiplexer, then combined with the light from the first pump source in a beam combiner. The combined beam is then amplified by a first ytterbium-doped fiber to obtain high-power laser light. After collimation by a collimator and dichroism by a first dichroic mirror, the laser light is frequency-doubled by a frequency-doubling crystal and finally dichroically separated by a second dichroic mirror to output high-power yellow-green laser light. This invention discloses a fiber laser for generating high-power yellow-green laser light, which reduces the number of core components in the optical path structure, simplifies the optical path structure and control logic, and reduces the hardware cost and assembly / debugging cost of the equipment. It effectively improves the stimulated Brillouin threshold of the laser and suppresses broadening during spectral amplification, while maintaining stable and good temporal characteristics.

An image acquisition assembly for an optical instrument comprises a beam-splitting prism (30) with a light-entry surface (31), a dichroic reflective layer (32) or interface, a first light-emission surface (34) and a second light-emission surface (35), at least two image sensors (40, 50), and a mounting device. A first image sensor (40) is located at the first light-emission surface (34) of the prism (30), and a second image sensor (50) is located at the second light-emission surface (35) of the prism (30). The mounting device includes a first socket (60; 60'; 60") for mechanically rigidly connecting the first image sensor (40) to the prism (30) and a second socket (80; 80'; 80") for mechanically rigidly connecting the second image sensor (50) to the prism (30).The first version (60; 60'; 60") has at least one stop for contact with a first stop surface (36) of the prism (30) and for contact with a stop surface (46) on the first image sensor (40). The second version (80; 80'; 80") has at least one stop for contact with a second stop surface of the prism (30) and / or for contact with a stop surface (56) on the second image sensor (50).