Abstract: An optical element (50), comprising: a substrate (52), an EUV radiation reflecting multilayer system (51) applied to the substrate, and a protective layer system (60) applied to the multilayer system and having at least a first and a second layer (57, 58). The first layer (57) is arranged closer to the multilayer system (51) than is the second layer (58) and serves as a diffusion barrier for hydrogen. This first layer (57) has a lower solubility for hydrogen than does the second layer (58), which serves for absorbing hydrogen. Also disclosed are an optical system for EUV lithography with at least one such optical element, and a method for treating an optical element in order to remove hydrogen incorporated in at least one layer (57, 58, 59) of the protective layer system and/or in at least one layer (53, 54) of the multilayer system (51).

Abstract: Comprising, in order from an object side: a first lens group G1 having negative refractive power; a second lens group G2 having positive refractive power; a third lens group G3 having negative refractive power; a fourth lens group G4 having positive refractive power; a fifth lens group G5 having negative refractive power; and a sixth lens group G6 having positive refractive power; upon varying magnification, air distances between the neighboring lens groups G1-G6 being varied; and a predetermined conditional expression being satisfied, thereby providing a variable magnification optical system which has excellent optical performance, an optical apparatus, and a method for manufacturing a variable magnification optical system.

Abstract: An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The imaging lens has a total of seven lenses. The first to seventh lenses are arranged respectively with a space in between. The first lens is formed in a shape so that a surface thereof on the object side is convex near an optical axis. The fifth lens is formed in a shape so that a surface thereof on the image plane side is concave near an optical axis. The seventh lens is formed in a shape so that a surface thereof on the image plane side has at least one inflexion point and is concave near an optical axis.

Abstract: A first receiving recess (44d) and a second receiving recess (44e) are formed on a surface of the housing, on which a pair of image forming lenses (47) are placed, to receive a first temperature sensor (101a) and a second temperature sensor (101b), and are formed in positions, in which thermal deformation characteristics of the housing are approximately identical at one side and the other side of a first straight line K1, while interposing the first straight line K1 therebetween.

Abstract: A compact, uniaxially-aligned series of lenses are shaped and coated to allow coaxial viewing of two different fields of view on the same focal-plane array by selecting a type of light. The selection can be, for example, by spectrum or polarization. Zonal coatings on the lens surfaces permit for a catadioptric narrow field-of-view light path. The lens assembly accomplishes simultaneous dual field-of-view in a durable package without respective motion of optical elements, without substantial gaps between the lenses, and at lower cost than other assemblies.

Abstract: A projection arrangement for a head-up display (HUD) is presented. The arrangement has a vehicle windshield that includes an outer pane and an inner pane bonded to one another via a thermoplastic intermediate layer. The vehicle windshield has an upper edge, a lower edge, and an HUD region. The thickness of the thermoplastic intermediate layer in the vertical course between the upper edge and the lower edge varies, at least in the HUD region, according to a wedge angle. The arrangement also has a projector that is aimed at the HUD region to generate a virtual image at a projection distance of at least 5 m. According to one aspect, a vertical radius of curvature in the HUD region is at least 6 m and a maximum value of the wedge angle is less than or equal to 0.3 mrad.

Abstract: A zoom lens includes in order from an object side: a positive first lens unit not moving for zooming; a negative second lens unit moving for zooming; a negative third lens unit moving for zooming; an intermediate lens group including a lens unit and moving for zooming; and a rear lens group including a lens unit, a lens unit, closest to an object of the zoom lens, not moving for zooming, an aperture stop being placed on a side of the object to or in the rear lens group, a distances between each pair of adjacent lens units changes for zooming, and a distance between the second and third lens units at a wide angle end, a distance between the second and third lens units at a telephoto end, and a maximum distance between the second and third lens units in a certain zoom range are appropriately set.

Abstract: A composite light blocking sheet includes a first surface layer, a second surface layer, an inside substrate layer and a central axis. The first surface layer has a first opening and a first outer surface connected to the first opening. The second surface layer has a second opening and a second outer surface connected to the second opening. The inside substrate layer has a substrate opening and is disposed between the first surface layer and the second surface layer and connects the first surface layer and the second surface layer. The central axis is coaxial with the first opening, the second opening and the substrate opening. More than 95% of the first outer surface has a first gloss being GU1, more than 95% of the second outer surface has a second gloss being GU2, and the first gloss GU1 and the second gloss GU2 satisfy specific conditions.

Abstract: A photographing system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element with refractive power. The first lens element with positive refractive power has an object-side surface being convex in paraxial region. The second lens element with refractive power has an image-side surface being concave in paraxial region. The third, fourth and fifth lens elements all have refractive powers. The sixth lens element with refractive power has an image-side surface being concave in paraxial region, wherein the image-side surface has at least one convex shape in off-axis region, and both of two surfaces are aspheric. The seventh lens element with refractive power has an object-side surface being concave in paraxial region, and both of two surfaces are aspheric.

Abstract: A pair of glasses with a wearing cushion device includes a main body, at least one inflatable cushion, an air pump, a switch element, a control unit and an air channel. The at least one inflatable cushion is disposed on a surface of at least one temple of the main body. The air pump is in communication with the at least one inflatable cushion. The control unit is electrically connected with the switch element and the air pump. The air channel is embedded within the main body and in communication with the at least one inflatable cushion and the air pump. When the switch element is turned on, the control unit enables the air pump to make ambient gas transferred to the at least one inflatable cushion through the air channel. Consequently, the at least one inflatable cushion is inflated with the gas and expanded to fit user's ears.

Abstract: The optical system is characterized by a rotationally symmetric front group that is located on a single axis of rotational symmetry passing through the center of an image plane, a rotationally symmetric back group, and an aperture, wherein the front group includes two internal reflecting surfaces and two transmitting surfaces, a light beam incident from at least one object plane on the front group forms an optical path along which the light beam enters a first transmitting surface, is reflected off a first reflecting surface and then off a second reflecting surface, and exits out of a second transmitting surface, and the light beam passes through the back group and aperture and is imaged in a position of the image plane away from the axis of rotational symmetry without being intermediately imaged within a section including the axis of rotational symmetry.

Abstract: A multipurpose eyewear system and apparatus is provided. An embodiment provides a film, vinyl, or other substance that may be removably applied to the lenses to provide the lenses with additional functionality. An embodiment provides a contoured and flexible frame and lens system that fits to a user's face. Additional functionality may be included by removable/replaceable lenses and/or removable/replaceable films. An embodiment provides a replaceable lens system that is either contoured or flat to provide compact and easy manufacturing, shipping, cleaning, and storing.

Abstract: A head-up display device, a head-up display method and a vehicle are provided. The head-up display device includes: a light source configured to generate a to-be-modulated light beam; a phase spatial light modulator configured to modulate a phase of the to-be-modulated light beam and emit at least two phase-modulated light beams; a reproduction component configured to perform image reproduction on the at least two phase-modulated light beams, so as to generate at least two reproduced images; at least two diffusers configured to receive and diffuse the at least two reproduced images generated by the reproduction component respectively; and a reflector assembly configured to guide the at least two light beams diffused by the at least two diffusers to a projection region, so as to form at least two projection images at different spatial positions.

Abstract: The present invention is mainly related to a virtual reality all-in-one apparatus. The virtual reality all-in-one apparatus may comprise a middle frame, a front housing, and a core function module. The core function module may comprise a frame assembly and a display module mounted on the frame assembly.

Abstract: An electronic device includes at least one optical lens assembly. The optical lens assembly includes four lens elements, and the four lens elements are, in order from an outside to an inside, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has an outside surface being convex in a paraxial region thereof. The second lens element has an inside surface being convex in a paraxial region thereof. The fourth lens element has an inside surface being concave in a paraxial region thereof, wherein at least one of an outside surface and the inside surface of the fourth lens element includes at least one critical point in an off-axis region thereof.

Abstract: An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The imaging lens has a total of seven lenses. The first to seventh lenses are arranged respectively with a space in between. The first lens is formed in a shape so that a surface on the object side is convex near an optical axis. The second lens is formed in a shape so that a surface on the image plane side is concave near an optical axis. The fifth lens is formed in a shape so that a surface on the image plane side is concave near an optical axis. The seventh lens is formed in a shape so that a surface on the image plane side has one inflexion point.

Abstract: A plastic barrel includes an object-end portion, an image-end portion and a tube portion. The object-end portion includes an object-end surface and an object-end hole, wherein the object-end surface includes a plurality of annular grooves, which are disposed coaxially to a central axis, and each of the annular grooves includes a stepped surface. The image-end portion includes an image-end opening. The tube portion connects the object-end portion and the image-end portion.

Abstract: A vehicle display mirror system is disclosed. The system comprises an electro-optic device configured to switch between a mirror state and a display state. The electro-optic device comprises a first substrate and a second substrate forming a cavity. The cavity is configured to retain an electro-optic medium that is variably transmissive such that the electro-optic device is operable between substantially clear and darkened states. The system further comprises a substantially transparent display disposed adjacent to the electro-optic device. The substantially transparent display comprises a switchable output grating configured to selectively diffract light outward from the waveguide.

Abstract: Optical diffusing films are made by microreplication from a structured surface tool. The tool is made using a 2-part electroplating process, wherein a first electroplating procedure forms a first metal layer with a first major surface, and a second electroplating procedure forms a second metal layer on the first metal layer, the second metal layer having a second major surface with a smaller average roughness than that of the first major surface. The second major surface can function as the structured surface of the tool. A replica of this surface can then be made in a major surface of an optical film to provide light diffusing properties. The structured surface and/or its constituent structures can be characterized in terms of various parameters such as optical haze, optical clarity, Fourier power spectra of the topography along orthogonal in-plane directions, ridge length per unit area, equivalent circular diameter (ECD), and/or aspect ratio.

Abstract: An adjustable side view mirror apparatus including a casing having a front edge and a pair of mirrors disposed within the front edge. The pair of mirrors includes a flattened upper mirror and a convexly curved lower mirror. An attachment arm is attached to each of the casing and an exterior surface of a vehicle. Each of an upper servo motor and a lower servo motor of a pair of servo motors is disposed within the casing and rotatably attached to each of the upper mirror and the lower mirror, respectively. Each of an upper mirror control and a lower mirror control of a base unit is in operational communication with the upper servo motor and the lower servo motor, respectively, and configured to activate each of the upper servo motor and the lower servo motor, respectively, to adjust each of the upper mirror and the lower mirror, respectively.