Abstract: The present invention is drawn to an optical article comprising: (a) a transparent optical polymer substrate, (b) a transparent intermediate abrasion-resistant coating obtained from at least one epoxysilane by a sol-gel process, and (c) a transparent outer coating comprising a polythiolene matrix obtained by curing a liquid monomer mixture comprising at least one polyfunctional thiol and at least one polyfunctional allyl monomer, said cured polythiol-ene matrix having a glass transition temperature comprised in the range from 40° C. to 70° C. and a thickness from 3.5 ?m to less than 10 ?m. It is also drawn to a method for preparing such an optical article and to a method for repairing scratches in such an optical article by heating.

Abstract: A manufacturing method for a glass that has an antireflection property includes (a) a step of causing a process gas that includes a fluorine compound to contact a surface of a glass substrate within a temperature range of 250° C.-650° C. under an air atmosphere at an ordinary pressure, and (b) a step of forming a layer of an organic fluorine-containing compound on the surface.

Abstract: Method for manufacturing an optical lens in which coating solution curing conditions are satisfied and a coating solution is cured. The coating solution curing conditions include the angle of the axis of an optical lens substrate with respect to the horizontal direction falls within a predetermined angle range, and a second condition that the optical lens substrate rotates around the axis at a predetermined rotational speed. The predetermined angle range is between a maximum inclination angle of the axis at which the peripheral edge of a lens surface is positioned at the highest position of the lens surface, and a maximum inclination angle of the axis at which the peripheral edge of the lens surface is positioned at the lowest position of the lens surface. The predetermined rotational speed is a speed at which the coating solution applied to the lens surface is held in a coating position.

Abstract: An image display apparatus includes: a light source to emit light; a lens array including a plurality of lenses arranged therein; and an image forming device to form an image with the emitted light on the lens array. The light corresponding to the formed image is transmitted from the lens array to be reflected by a reflective surface to visualize the formed image into a virtual image. At least two of the plurality of lenses of the lens array have curvatures different from each other.

Abstract: A heat radiation control element 11, which contains an inorganic layer 21 a surface of which has openings arranged two-dimensionally, and a reflecting film 22.

Abstract: An expanded cold mirror is provided. The mirror includes a substrate and a coating deposited on the substrate. The coating includes a first coating stack comprising at least one period of a low refractive index metal oxide coating layer and a high refractive index metal oxide coating layer, a second coating stack comprising at least one period of a low refractive index metal fluoride coating layer and a high refractive index metal oxide layer, and a third coating stack comprising at least one period of a low refractive index metal fluoride coating layer and a high refractive index metal fluoride coating layer.

Abstract: An optical device has a first metasurface disposed over a substrate. A high-contrast pattern of the first metasurface is operable for modifying, over a first phase profile, a phase front of an incident light beam. A second metasurface, is disposed over a plane parallel to the first metasurface with a second high-contrast pattern and operable for shaping, over a second phase profile, the modified phase front of the incident light beam into a converging spherical phase front. A spacer layer, in which the modified phase front of the incident light beam diffracts, is disposed in a controllably changeable separation between the first and second metasurfaces. Controllably changing the separation between the first and the second metasurfaces by a first distance correspondingly changes the position of the focus point of the converging spherical phase front by a second distance significantly greater than the first distance.

Abstract: A security element for an object of value has a flat, transparent body with a front side and a back side between which there lies a center plane, a first region configured on the body and a second region configured on the body which encode a motif. The body has in the first region a ground element structure which conveys different color impressions from front and back sides in plan view of the body. The body likewise has the ground element structure in the second region and is in mirrored form relative to the center plane, causing first and second regions to show the motif from both sides in plan view, and the motif to be unrecognizable in transmission view.

Abstract: Described are imaging devices that employ patchworks of diffractive structures as focusing optics. Each diffractive structure best focuses light over a relatively narrow cone of incident angles, and provides suboptimal focusing for incident angles outside that cone. Different diffractive structures best focus different angular ranges, with the patchwork thus providing an overall focusable response for the relatively broad range of angles required to image a scene. Images can be captured without a lens, and cameras can be made smaller than those that are reliant on lenses and ray-optical focusing.

Abstract: A vehicle camera system includes a camera that includes an image sensor, a filter mask, and a control and evaluation device, to which the image sensor outputs an image signal with frames that correspond to different exposure times. The image sensor includes an arrangement of sensor pixels outputting pixel signals, and the filter mask includes an arrangement of filter pixels situated in front of respective ones of the sensor pixels, where different filter pixels have different transmission behavior. The control and evaluation device compares to each other pixel signals (a) contained in the frames of different exposure times, and (b) output by sensor pixels which record light filtered differently by the filter pixels.

Abstract: [Problem] The present invention provides a light reflective film in which adhesive property between a light reflective layer and a hard coat layer is improved. [Solution] A light reflective film which a light reflective layer comprising a high refractive index layer and a low refractive index layer, a resin adhesive layer, and a hard coat layer are laminated on a substrate in this order, wherein the hard coat layer comprises an active energy ray-curable resin, and the resin adhesive layer comprises at least one member selected from the group consisting of polyvinyl acetal resins, acrylic resins, and urethane resins.

Abstract: The present invention relates to an optically anisotropic sheet for transfer, comprising a substrate, and a liquid crystal cured layer laminated together, wherein the liquid crystal cured layer is to be transferred from the substrate to a receiver via an active energy ray-curable adhesive, and when the transmittance of the optically anisotropic sheet for transfer at a wavelength of 800 nm is taken as 100%, the transmittance or the optically anisotropic sheet for transfer at wavelength of 390 nm is more than 35% and less than 45%, the transmittance at a wavelength of 400 nm is more than 75% and less than 85%, and the transmittance at a wavelength of 550 nm is more than 95% and less than 100%.

Abstract: The present invention relates to an optically anisotropic sheet comprising a substrate and a liquid crystal cured layer laminated together, wherein the substrate has a surface roughness of 1.0 nm or less in a field of view of 1 ?m2 and a water contact angle of 70° or more.

Abstract: A polarizing optical article formed by selectively applying a conductive coating to a portion of a structured surface formed of a series of linear peaks and valleys.

Abstract: A polarizer is disclosed and it is used in combination with a reflection layer. The polarizer comprises a polarizing layer (702) and a compensation layer (704). The compensation layer (704) is disposed between the polarizing layer (702) and the reflection layer. Accordingly, a display device comprising the polarizer is also disclosed. The polarizer solves the problem of oblique light leakage of OLED displays.

Abstract: The present invention addresses the problem of providing an optical compensation thin film which contains a cellulose acylate and an additive and which when laminated on a polarizer with a photocurable adhesive, exhibits high adhesiveness to the polarizer and can reduce the occurrence of curling and the deterioration of polarization degree. An optical compensation film which contains a cellulose acylate having an acylation degree of 2.0 to 2.5 and an additive and which has a film thickness of 15 to 40 ?m, characterized in that when 50 pl of hydroxyethyl acrylate droplets are dropped on the film at 23 C and 55% RH, at least one surface of the film exhibits a permeability of 10 to 25 pl/15 sec to the droplets.

Abstract: An organic EL display device including a substrate, a transparent electrode, a luminescent layer, and a metal electrode layer in this order from a light emission side, a circularly polarizing plate disposed on the light emission side of the substrate, the circularly polarizing plate including a polarizing film and phase difference films that stacked on each other. The phase difference film includes a resin composition (A) containing polystyrene-based polymer having a syndiotactic structure and polyarylene ether, a ratio of the polystyrene-based polymer having the syndiotactic structure with respect to the polyarylene ether in the resin composition (A) is 65:35 to 55:45, being a weight ratio of (the polystyrene-based polymer having the syndiotactic structure) with respect to (the polyarylene ether), the phase difference film satisfies a relation Re450<Re550<Re650, and an Nz coefficient of the phase difference film at a wavelength of 550 nm is ?0.25 to ?0.05.

Abstract: A light guide panel may include a first surface, a second surface overlapping the first surface, and a third surface oriented at an angle with respect to the second surface. The first surface may include a first face, a second face, a third face connected between the first face and the second face, and a first light-scattering structure positioned at a first portion of the second face. A distance between the first face and the second surface may be unequal to a distance between the second face and the second surface. The third face may not be parallel to the first face and may not be parallel to the second face.

Abstract: A light assembly is provided that includes a light guide, multiple light pipes, and multiple light sources. The light guide has an elongated body extending along a longitudinal axis. The light guide includes multiple segments arranged axially along a length of the body. Each segment has a light receiving region and a light emitting region. The light pipes are disposed along the light receiving regions and extend parallel to the longitudinal axis. Each of the multiple light sources is optically coupled to an attachment end of a corresponding light pipe. The light emitted by each light source is received by the corresponding light pipe at the attachment end and transmitted through the light pipe towards a distal end of the light pipe. Adjacent segments of the light guide receive light from different light pipes and emit such light from the light guide through the corresponding light emitting regions.

Abstract: Disclosed herein is an optical fiber assembly comprising a launching fiber having a receiving end and a transmitting end; an illuminating fiber having a receiving end and a transmitting end; where the receiving end of the launching fiber is operative to receive light from a light source and the transmitting end of the launching fiber is operative to transmit light to the receiving end of the illuminating fiber; where the launching fiber contacts the illuminating fiber in a manner so as to be offset from a center of a cross-sectional area of the illuminating fiber; and where the launching fiber has a diameter that is ?to ½of a diameter of the illuminating fiber; and a lens that is operative to contact the transmitting end of the illuminating fiber.

Abstract: A variety of light-emitting devices are disclosed that are configured to output light provided by a light-emitting element (LEE). In general, embodiments of the light-emitting devices feature a light-emitting element, a scattering element that is spaced apart from the light-emitting element and an extractor element coupled to the scattering element, where the extractor element includes, at least in part, a total internal reflection surface. Luminaires incorporating light-emitting devices of this type are also disclosed.

Abstract: A backlight unit includes a light source, a light guiding plate disposed on a side of the light source to guide light, a quantum dot bar disposed between the light source and the light guiding plate and spaced apart from the light source and the light guiding plate, the quantum dot bar for performing wavelength conversion of light, and a quantum dot bar receiving unit disposed on lower surfaces of the quantum dot bar and the light guiding plate, wherein the quantum dot bar is seated on the quantum dot bar receiving unit, and the light guiding plate is mounted on the quantum dot bar receiving unit, and wherein the quantum dot bar receiving unit and the light guiding plate are coupled to each other.

Abstract: Provided are quantum dot bar container and backlight unit. According to an aspect of the present invention, there is provided a quantum dot bar container comprising a support including a guide groove formed along a major axis thereof; a cover having a major axis, the cover being orientable to align its major axis substantially parallel to the major axis of the support, the cover including a fixing groove formed along the major axis of the cover so as to face the guide groove; and a fixing portion coupling an end of the support to an end of the cover. The cover and the support are positioned so as to form a window therebetween, when the cover is oriented so that its major axis is substantially parallel to the major axis of the support.

Abstract: This surface light source device has; a case; multiple light-emitting devices arranged on the inner surfaces of a pair of side walls within the case; a reflecting member that protrudes from the base surface of the case, and that reflects light emitted from the light-emitting devices toward an aperture part of the case; and a light-emitting surface member that has a light-diffusing property and a light-transmitting property, and that covers the aperture part. The light-emitting devices are arranged on the side walls such that the light axis of the light-emitting elements is parallel to the base surface of the case. The light-reflecting member has a ridge line that is parallel to the side surfaces and the ceiling surface of the case, and the light-reflecting member is formed with a curved surface, with the ridge line being contained in the apex thereof.

Abstract: A spread illuminating apparatus includes a light source that emits white light, and a light guide plate including an incident light surface which is an end surface at which the light source is disposed and an emitting part that emits light which has entered from the incident light surface in a spread pattern from an emitting surface. The light guide plate includes an incident light wedge part between the incident light surface and the emitting part, the incident light wedge part including an inclined surface and tapering in thickness from the incident light surface side toward a forward direction. Also, a blue light reflecting unit is disposed on at least one of the emitting surface side or an opposite side of the emitting surface side near a boundary between the incident light wedge part and the emitting part.

Abstract: An edge-fed waveguide luminaire includes a light waveguide having a planar body, a waveguide edge support structure, and an anchor opening in the planar body of the light waveguide, which is displaced from said waveguide edge support structure. A sensor is fixed in the anchor opening of said light waveguide so as to be responsive to conditions in the space below the luminaire. The sensor, which will have minimal impact on the aesthetic qualities of the luminaire, is in communication with light switching means for adjusting the light output from the luminaire in response to changes in conditions in the space below the luminaire.

Abstract: A display device is provided, which comprises: a display panel comprising a substrate; and a light guide plate disposed on a light incident side of the display panel, wherein a difference between expansion ratios of the substrate and the light guide plate is in a range from 0% to 0.5% when a temperature of the display panel is between 0° C. and 150° C. In addition, the display device of the present invention can further comprise: a light source disposed at a side of the light guide plate.

Abstract: An optical member includes: a light guide portion; a three-dimensional effect forming portion; and a multi-effect forming portion. The three-dimensional effect forming portion comprises multiple main patterns sequentially arranged on the first surface in a first direction and having respective inclined surfaces. The multiple main patterns guide an incident beam to a first surface direction or a second surface direction, thereby creating a line-shaped beam of a first path crossing at right angles to each pattern extension direction of the multiple patterns. The multi-effect forming portion comprises multiple optical patterns sequentially arranged in a second direction crossing a first direction and configured for converting a single line-shaped beam of the first path into multiple line-shaped beams.

Abstract: A light guide for illuminating a display screen, including a vertical cone-shaped entrance surface including an aperture for admitting light beams emitted by an LED, a folding mirror for reflecting the admitted light beams at an angle of approximately 90°, and for horizontally collimating the admitted light beams, a horizontal guide for guiding the reflected light beams to an exit surface, and an exit surface positioned above a perimeter of a display screen for directing the guided light towards a portion of the display screen, the exit surface being tilted vertically from the horizontal at a slight angle to direct the guided light beams towards the display, and being shaped horizontally as a concave lens to spread the guided light beams horizontally over an angular expanse of the display screen.

Abstract: A lighting assembly includes a light source, a light guiding plate and a reflecting member. The light guiding plate has a light input surface, a light output surface extending from the light input surface, a connecting surface and a reflecting surface. The connecting surface has an inclined segment. Extensions of the inclined segment and the light output surface cooperatively define a first included angle. The reflecting surface interconnects the connecting surface and the light output surface, cooperates with the light output surface to define a second included angle, and mounted with the reflecting member. A thickness of the light guiding plate at the reflecting surface is greater than that at the light input surface.

Abstract: To realize a window structure that can ensure that scenery can be viewed from an indoor space during the daytime and prevent peeping from outdoors regardless of whether it is daytime or nighttime. A window structure including a translucent planar light emitter in which a half mirror layer is provided on the inside thereof, and glass panels provided on an inside and an outside of the planar light emitter. The planar light emitter includes a translucent resin panel, a light-emitting element provided on an end surface of the resin panel, and a light diffusing layer provided on a surface of the translucent resin panel. A surface of the planar light emitter emits light when light of the light-emitting element enters from the end surface of the resin panel, is reflected by the half mirror layer, and is diffused by the light diffusing layer.

Abstract: An optical sheet includes: a sheet-like base material having transparent characteristics; an anisotropic light focusing part that is formed over a light-receiving surface of the base material and that has light focusing anisotropy whereby a light focusing effect is exerted on incident light in a light focusing direction along the light-receiving surface but not in a non-light focusing direction along the light-receiving surface, the non-light focusing direction being perpendicular to the light focusing direction; and an anisotropic light diffusing part that is formed over a light exiting surface of the base material and that diffuses and emits light from the anisotropic light focusing part.

Abstract: Provided are a backlight assembly and a display device having the same. A backlight assembly includes a light source unit which emits light, a light guide plate (LGP) including an incident surface upon which light emitted from the light source unit is incident, an opposite surface which faces the incident surface, and an exit surface which connects the incident surface and the opposite surface and from which light incident upon the incident surface exits, a wavelength conversion member which is located on the exit surface and converts a wavelength of light output from the exit surface, and a first reflective member which is located on the opposite surface and reflects light incident upon the opposite surface, wherein the first reflective member includes a plurality of first color patterns which face the opposite surface.

Abstract: Illumination devices are described for illuminating a target area, e.g., floors of a room, using solid-state light sources. In general, an illumination device includes a first light guide extending along a first plane, the first light guide to receive light from first light emitting elements (LEEs) and guide the light in a first direction in the first plane; a second light guide extending along the first plane, the second light guide to receive light from second LEEs and guide the light in a second direction in the first plane opposite to the first direction; a first redirecting optic to receive light from the first light guide and direct the light in first and second angular ranges; and a second redirecting optic to receive light from the second light guide and direct the light in third and fourth angular ranges, where the first, second, third and fourth angular ranges are different.

Abstract: A reflective display includes a reflective spatial light modulator and a frontlight. The frontlight includes a lightguide formed from a film. The lightguide includes an array of coupling lightguides continuous with a lightguide region of the lightguide. One or more light sources emit light into the array of coupling lightguides. Light from each coupling lightguide combines and totally internally reflects within the lightguide region. Light extraction features frustrate totally internally reflect light within the lightguide region such that the light exits the lightguide through a cladding region toward a light redirecting optical element that redirects the light toward a reflective spatial light modulator. A method of producing a display is also disclosed.

Abstract: A display device is provided. The display device includes: a display panel; a light source assembly; a light guide plate (LGP); a mold frame; and a bottom chassis. The light source assembly includes a light source configured to generate light and a circuit board on which the light source is mounted. The LGP includes an incident surface upon which the light generated by the light source is incident and an exit surface configured to output the light incident through the incident surface toward the display panel. The mold frame includes a sidewall and a protrusion which protrudes inward from the sidewall. The bottom chassis includes a bottom portion and a sidewall portion and houses the mold frame, the LGP and the light source assembly. The display panel is placed on an upper surface of the protrusion, at least a portion of the circuit board is disposed between a lower surface of the protrusion and the bottom portion, and an upper surface of the light source does not overlap the protrusion.

Abstract: A variety of luminaire modules are disclosed that are configured to output light provided by multiple light-emitting elements (LEEs). In general, embodiments of the luminaire modules feature at least two LEEs disposed on at least one substrate, at least two light guides that receive light from corresponding LEEs of the at least two LEEs, and at least one optical extractor that receives light from corresponding light guides from the at least two light guides.

Abstract: A light source module includes a substrate on which a light source is mounted, a light guide plate having one surface configured to emit light made incident from a side surface of the light guide plate opposed to the light source, a support configured to support the substrate at an opposite surface opposed to the side surface of the light guide plate, and an attachment member configured to attach the substrate to the support, wherein the attachment member includes a latch part to be latched to the support and a holding part configured to hold the substrate between the opposite surface and the holding part, and a height of the holding part that is holding the substrate from a surface of the substrate is higher than a height of the light source from the surface of the substrate.

Abstract: A backlight unit includes a light source unit supplying light, a light guide plate guiding and emitting the light provided from the light source unit to emit the guided light, a reflective sheet disposed below the light guide plate, a lower cover accommodating the light source unit, the light guide plate, and the reflective sheet, and a fixing unit fixing the light guide plate, the reflective sheet, and the lower cover. The fixing unit includes a fixing screw fixing the light guide plate, the reflective sheet, and the lower cover, and a fixing screw holder surrounding at least one portion of the fixing screw to absorb an impact due to movement of the fixing screw.

Abstract: A display apparatus includes a backlight unit generating light, a bottom receiving member including a bottom portion and a first sidewall portion extending from the bottom portion to define a receiving space accommodating the backlight unit, an intermediate frame coupled to the bottom receiving member including a second sidewall portion facing the first sidewall portion and a cover portion extending inward from the second sidewall portion to cover an upper edge of the backlight unit, and a display panel on the cover portion for receiving the light from the backlight unit and displaying an image. The bottom receiving member includes a protrusion protruding outward from the first sidewall portion, and the intermediate frame includes a distance adjusting portion in an inner side surface of the second sidewall portion engaged with an outer surface of the protrusion to move the cover portion along a z-axis direction away from the bottom portion.

Abstract: Embodiments of the present invention provide a light guiding plate, a backlight module and a display device. The light guiding plate comprises a body having an effective light guiding region corresponding to an effective display region of a display panel and a peripheral region located at peripheries of the effective light guiding region, and a supporter installed in the peripheral region for providing a support force in a direction opposite to a direction of gravity of the body. Since the supporter provides a support force in a direction opposite to a direction of gravity of the body of the light guiding plate, problem of deformation of the light guiding plate due to gravity can be prevented.

Abstract: A rod-shaped light guide operable to guide light entering a lateral end surface thereof to exit through a surface thereof is provided with: a recess in one lateral end thereof, having a predetermined depth in a longitudinal direction thereof, a bottom of the recess forming the lateral end surface; a positioning boss extending in the longitudinal direction from the one lateral end and inserted into a positioning hole in a substrate with a light source; and an engagement portion formed at the one lateral end to engage the substrate positioned by the positioning boss to the one lateral end so that a front surface of the substrate can abut on the one lateral end and the light source can be accommodated in the recess while being kept at a certain distance from the lateral end surface, the positioning boss and the engagement portion being formed integrally with the light guide.

Abstract: The present invention concerns a method for constructing a light coupling system wherein a grating is manufactured on the surface of a multimode waveguide and defines the entrance of the waveguide for an incident light beam, said grating comprising a repetition of patterns. The grating is defined by a set of parameters comprising: •grating period (P), separating two adjacent patterns, •grating depth (d) between the highest and the lowest point of the pattern, •incident angle mean value (?) of the incident light with respect to the waveguide. The method comprises a step of optimization of the set of parameters to obtain an optimized second set of parameters, in order to obtain a transmission efficiency (Ce) of the incident light into said waveguide for the first or the second diffractive order exceeding 35% for unpolarized light, or exceeding 50% for polarized light, at a given wavelength of the incident light.

Abstract: The present disclosure provides systems and methods for avoiding beam obstructions during inscription of fiber gratings. For some embodiments, an optical fiber is re-oriented during fiber inscription to avoid obstruction of the actinic beam.

Abstract: An optical waveguide of the present invention is an optical waveguide having a first rib and a second rib being provided on a slab layer along one direction from one side to the other side and a barrier layer being connected between said first rib and said second rib, in which: the first rib includes a first taper part having a width widening from a first end in said one side to a second end connected with said barrier layer; and the second rib includes a first layer and a second layer laminated on a face of said slab layer in turn.

Abstract: Coating compositions that include acrylic polymers as reinforcing agents. The coating compositions are radiation-curable and include a multifunctional acrylate component, an acrylic monomer diluent, an acrylic polymer, and a photoinitiator. The acrylic polymer is not radiation-curable and lacks hydrogen-donor groups, urea groups, and urethane groups. The acrylic polymer is non-reactive and does not chemically bond to the crosslinked network formed by curing the acrylate components. Instead, the acrylic polymer reinforces the cured network through physical interactions. Representative acrylic polymers include (meth)acrylates that lack substituents with hydrogen-donor, urea, and urethane groups.

Abstract: A manufacturing method for a polymer optical waveguide, which allows a wide choice of materials, is improved in reproducibility of processing and in yield, and is inexpensive. A manufacturing method for a polymer optical waveguide according to an embodiment of the present invention includes: arranging a curable composition for core formation on a surface of a mold having a recess corresponding to a core shape; attaching a transfer film onto the surface of the mold while pressing the transfer film in a predetermined direction to fill the recess with the curable composition for core formation and to remove an excess of the curable composition for core formation; curing the curable composition for core formation to form a core; peeling the transfer film from the mold to transfer the core onto the transfer film; and forming a first cladding so as to cover the core on the transfer film.

Abstract: Methods and systems for optical power monitoring of a light source assembly coupled to a silicon photonically-enabled integrated circuit (chip) are disclosed and may include, in a system comprising an optical source assembly coupled to the chip: emitting a primary beam from a front facet of a laser in the optical source assembly and a secondary beam from a back facet of the laser, directing the primary beam to an optical coupler in the chip, directing the secondary beam to a surface-illuminated photodiode in the chip, and monitoring an output power of the laser utilizing an output signal from the photodiode. The primary beam may comprise an optical source for a photonics transceiver in the chip. The focused primary beam and the secondary beam may be directed to the chip using reflectors in a lid of the optical source assembly.

Abstract: The invention relates to a planar-optical element having at least one photonic component, which is arranged in at least one substrate containing or consisting of at least one polymer, wherein the substrate includes at least one first film layer having a first side and an opposite second side and a second film layer having a first side and an opposite second side, wherein the first side of the second film layer is arranged on the second side of the first film layer and at least the second film layer contains nanowires, at least in a subarea. The invention also relates to a corresponding sensor element and a method for the production thereof.

Abstract: The present invention discloses a full-polarization-state power distributor with integer ratio of power distribution based on photonic crystal waveguide which comprises a photonic crystal waveguide formed in a photonic crystal with a complete photonic band-gap, and the photonic crystal consists of background dielectric rod array; the photonic crystal waveguide consists of a transverse waveguide and a perpendicular waveguide perpendicularly connected with the transverse waveguide; one end of the transverse waveguide is an input end, and the other end is an output end; the perpendicular waveguide is another output end; and the middle part of the transverse waveguide is provided with waveguide defect dielectric rods.