Abstract: The present application provides an aperture assembly. The aperture assembly is used in an optical lens system. The aperture assembly includes a plate including a hollow portion and a non-hollow portion. The hollow portion is configured to define an aperture of the optical lens system, wherein the contour of the hollow portion has a non-circular shape. The aperture assembly can prevent the size of the aperture from being reduced as the size of the plate is reduced in a case that a circular aperture is applied to the plate. The present application also realizes an aperture adjustment for a non-circular aperture.

Abstract: The present invention relates to a lens edge simulation tool (10) for measuring the fitment of a lens edge profile (LEP) with respect to a frame groove profile (FGP) of a spectacle frame (20), the lens edge simulation tool (10) having a defined edge profile (STP) like a lens edge profile (LEP) of a lens (6) being machined by a defined edger machine (4), the defined edge profile (STP) comprising a bevel portion (11) protruding towards a protrusion direction (A), wherein the lens edge simulation tool (10) further comprises a probe (15) provided at a distal end tip portion (14) of the bevel portion (11) and being moveable (M) along the protrusion direction (A) between a retracted position in which the probe (15) does not protrude from the defined edge profile (STP) and an extension position in which the probe (15) protrudes from the distal end tip portion (14).

Abstract: A display system includes a display screen, a light source to generate a light beam to be modulated in accordance with image data, and a beam scanning module to receive the light beams and to direct the light beam onto an associated display region of the display screen. The beam scanning module includes a resonant mirror configured to scan the light beam along a first scanning direction across the associated display region, and a linear scanning mirror to scan the light beam along a second scanning direction across the associated display region. The beam scanning module also includes an integral fold mirror positioned to reflect the light beam from the light source to the resonant mirror.

Abstract: The disclosure provides an optical lens, a camera module and a terminal. The optical lens sequentially includes: a stop; a first lens with positive focal power, a convex object side surface, and an image side surface with a concave paraxial region; a second lens with negative focal power, a concave image side, and an object side surface with a convex paraxial region; a third lens with a positive focal power, both an object surface and an image surface are concave at a paraxial region thereof; a fourth lens with a negative focal power, a concave object side surface and a convex image side surface; a fifth lens with positive focal power, an object surface and an image surface are convex at a paraxial region thereof; and a sixth lens with a negative focal power, bath an object surface and an image surface are concave at a paraxial region thereof.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a low profile and a low F-number. An imaging lens comprises in order from an object side to an image side, a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens, a fifth lens with positive refractive power, a sixth lens with positive or negative refractive power, and a seventh lens with negative refractive power, wherein said first lens is formed in a meniscus shape having an object-side surface being convex in a paraxial region, said second lens has an image-side surface being concave in a paraxial region, said sixth lens has an image-side surface being concave in a paraxial region, and said seventh lens has an image-side surface being concave in a paraxial region, and predetermined conditional expressions are satisfied.

Abstract: The present disclosure is directed to an optical system internally having an intermediate imaging position that is conjugated to a magnification conjugate point on a magnification side and a reduction conjugate point on a reduction side, respectively, the optical system including: a magnification optical system having A (A is an integer of three or more) pieces of lens elements, positioned on the magnification side with respect to the intermediate imaging position; and a relay optical system having B (B is an integer of two or more) pieces of lens elements, positioned on the reduction side with respect to the intermediate imaging position. A first lens group composed of ? pieces (? is one or more and less than B) of lens elements positioned first from the magnification side in the relay optical system has a negative power.

Abstract: An optically-transparent device (100) is disclosed which comprises a main part (10) of dielectric material having a refractive index n2, said device being configured for forming a field intensity distribution in a near zone of said device from electromagnetic waves incidentally illuminating said device, when said device is embedded into a dielectric material having a refractive index n1 lower than said refractive index n2. Said device (100) further comprises at least one insert (11) of dielectric material having a refractive index n3 higher than said refractive index n2, said at least one insert being at least partly inserted into said main part, said refractive index n1 being different from said refractive index n3, and wherein Formula (I) with W2 being a half width of said insert and Formula (II), Formula (III) with W1 being a half width of said main part and Formula (IV), with ? being the wavelength of the electromagnetic wave propagating in the dielectric material having refractive index n1.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a low profile and a low F-number. An imaging lens comprises in order from an object side to an image side, a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens, a fifth lens with positive refractive power, a sixth lens with positive or negative refractive power, and a seventh lens with negative refractive power, wherein said first lens is formed in a meniscus shape having an object-side surface being convex in a paraxial region, said second lens has an image-side surface being concave in a paraxial region, said sixth lens has an image-side surface being concave in a paraxial region, and said seventh lens has an image-side surface being concave in a paraxial region, and predetermined conditional expressions are satisfied.

Abstract: An optical imaging system sequentially includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis. The first lens has positive refractive power, with an object-side surface being convex at the optical axis; the second lens has refractive power, with an image-side surface being convex at the optical axis; the third lens has refractive power; the fourth lens has positive refractive power, with an image-side surface being convex at the optical axis; the fifth lens has negative refractive power, with an object-side surface being convex at the optical axis and an image-side surface being concave at the optical axis; a diaphragm is arranged between the object side of the optical imaging system and the fifth lens.

Abstract: This disclosure relates to a wide-angle lens, a camera module and a vehicle camera. The wide-angle lens sequentially includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. An object side surface of the first lens is convex and an image side surface of the first lens is concave. An object side surface of the second lens is convex and an image side surface of the second lens is concave. The third lens and the sixth lens are bi-concave lenses. The fourth lens, the fifth lens and the seventh lens are bi-convex lenses. The fifth lens and the sixth lens form a cemented body.

Abstract: The invention relates to a method of designing a refractive transparent or partially transparent light-redirecting surface, or a reflective light-redirecting surface, of a caustic layer comprising providing a discrete representation of an input target image, calculating a generalized power diagram for a set of image pixels pi of the target image and computing a piecewise light-redirecting surface of the caustic layer based on a calculated optimal set of weights minimizing a cost function associated with the set of image pixels pi. The invention also relates to an optical security element, a marked object, a method of visually authenticating an object and use of the optical security element for authenticating or securing against counterfeiting.

Abstract: An operating device includes an oscillator oscillable around an oscillation axis; a support; and a movable portion. The movable portion includes: a first connecting portion on one end, connected to the oscillator; a second connecting portion on the other end, connected to the support; and a beam extending in a direction intersecting the oscillation axis. At least one of the first connecting portion and the second connecting portion includes: a first extending portion extending along the oscillation axis; and a first thick portion extending along the oscillation axis and having a thickness greater than a thickness of another portion other than the first thick portion in the at least one of the first connecting portion and the second connecting portion, at least a part of the first thick portion included in the first extending portion.

Abstract: Eyewear includes a frame, a pair of nose pads, and a pair of temples. Each of the nose pads may have a surface that faces a respective side of the wearer's nose. The eyewear may include a pair of nose grips disposed respectively on the nose pads, each of the nose grips defining a plurality of nose grip surfaces that face the respective side of the wearer's nose and are offset toward the wearer's nose from the surface of the respective nose pad. Each of the temples may have a surface that faces a respective side of the wearer's head. The eyewear may include a pair of temple grips disposed respectively on the temples, each of the temple grips defining a plurality of temple grip surfaces that face the respective side of the wearer's head and are offset toward the wearer's head from the surface of the respective temple.

Abstract: Introduced here are techniques to accurately and efficiently generate an image indicative of a fundus. An imaging device engaged to an ophthalmology device, such as an indirect ophthalmoscope, may capture a series of images of a fundus. The series of images may be segmented to identify a region of interest (ROI) representing the fundus in each image. The segmented series of images may be projected onto a coordinate space to remove any distortion in each of the series of images. The projected segmented series of images may be combined into an output fundus image. As a result, the output fundus image may remove distortion and glare included in the input images. The output fundus image may be utilized in detection and diagnosis of various conditions and diseases.

Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a low profile and a low F-number. An imaging lens comprises in order from an object side to an image side, a first lens with positive refractive power, a second lens with positive or negative refractive power, a third lens with positive or negative refractive power, a fourth lens, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power, wherein said first lens has an object-side surface being convex in a paraxial region, said third lens has an object-side surface being convex in a paraxial region, said fifth lens is formed in a biconcave shape having an object-side surface and an image-side surface being concave in a paraxial region, and said seventh lens has an image-side surface being concave in a paraxial region, and predetermined conditional expressions are satisfied.

Abstract: A display device includes a display panel, and a front panel overlapping with the display panel. The front panel includes a first substrate, and a second substrate located on an opposite side of the first substrate with respect to the display panel, the front panel has an active region capable of being switched between a display state in which an image is displayed and a reflection state in which a reflected image is provided, and a frame region around the active region, and a metal layer is arranged in the frame region of the second substrate.

Abstract: A control apparatus for controlling a thickness of a substrate, such as a glass ribbon. The control apparatus comprises a laser assembly and a shielding assembly. The laser assembly generates an elongated laser beam traveling in a propagation direction along an optical path. The shielding assembly comprises at least one shield selectively disposed in the optical path. The shield is configured to decrease an optical intensity of a region of the elongated laser beam. The shielding assembly is configured to change an intensity profile of the elongated laser beam from an initial intensity profile to a targeted intensity profile. A desired targeted intensity profile can be dictated by an arrangement of the shield(s) relative to the optical path, and can be selected to affect a temperature change at portions of the substrate determined to benefit from a reduction in thickness.

Abstract: The disclosure provides an optical imaging lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens group with a positive refractive power, including a first lens with a refractive power; a second lens group, sequentially including from the object side to the image side along the optical axis: a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens with refractive power respectively; an optical filter; and a photosensitive element; wherein at least one of the first lens to the sixth lens is arranged to be movable relative to the photosensitive element in a direction of the optical axis; a maximum effective semi-diameter DT51 of an object-side surface of the fifth lens and a maximum effective semi-diameter DT32 of an image-side surface of the third lens satisfy 1.5<DT51/DT32<2.5.

Abstract: Moiré is an appealing visual effect observable when two or more repetitive patterns are superposed. We introduce a method for designing and fabricating level-line moirés on curved surfaces. These moiré shapes are obtained by superposing a partly absorbing or partly light deviating curved base layer and a curved revealing layer formed by a grating of transparent lines or cylindrical lenses. The distances between base layer and revealing layer are adapted to the locally varying distances between successive transparent lines or cylindrical lenses of the curved revealing layer grating. We demonstrate the quality of our method by rendered simulations and by fabrication. The resulting level-line moiré display devices can be manufactured using different fabrication techniques, from multi-material 3D printing to molding.

Abstract: A composite pane with an electrically controllable functional element that can be switched in segments, includes a first pane, a second pane, which are joined to one another via an intermediate layer, and a functional element that is integrated in the intermediate layer, wherein the functional element includes, arranged flat one over another, a first surface electrode and a second surface electrode, between which an active layer is arranged flat, the first surface electrode is divided into multiple segments by at least one separating line, a group of first busbars electrically conductively contact the first surface electrode, at least one second busbar electrically conductively contacts the second surface electrode, and wherein each segment of the first surface electrode is electrically conductively contacted by at least two busbars of the group of the first busbars.