Abstract: A mandrel 1 for holding an ophthalmic lens member blank 16 during machining is disclosed. The mandrel 1 has a front surface 6 for receiving an ophthalmic lens member blank 16 to be machined. The front surface 6 comprises a planar surface region 10; a curved surface region 8; and a drainage channel 12 located between the curved surface region 8 and the planar surface region 10 such that wax applied to the curved surface region 8 flows into the drainage channel 12. A kit of parts comprising such a mandrel 1, a method of mounting an ophthalmic lens member blank 16 for machining, a method of machining an ophthalmic lens member blank 16, an ophthalmic lens produced using the apparatus and a batch of such lenses are also disclosed.

Abstract: An optical device and the prism module thereof are provided. The prism module includes a first prism, a second prism, a third prism and a fourth prism. The second prism is disposed beside the first prism. The second prism is attached to the third prism and the fourth prism. In operation, first visible light enters the first prism, is reflected plural times in the first prism, enters the second prism and then the fourth prism, is reflected at least one time in the fourth prism, returns to the second prism, is reflected at least one time in the second prism, enters the third prism and exits from the third prism. Also, second visible light enters the third prism, is reflected plural times in the third prism and exits from the third prism.

Abstract: A projection system is provided. The projection system includes at least one micro LED line and a scan optical system. The micro LED line is configured for emitting lights with a changing frequency of X times per second. The scan optical system is disposed at a downstream side of the at least one micro LED line. The scan optical system is configured to scan the lights emitted from the micro LED line with a scan rate of M seconds per scan and to project images formed of the lights to corresponding positions on a target projection plane. The projection system has a horizontal resolution of N lines. A total number n of the at least one micro LED line is smaller than N. Also, X=M*(N/n).

Abstract: The paramagnetic garnet-type transparent ceramic a sintered object of a composite oxide represented by formula (1), (Tb1-x-yYxScy)3(Al1-zScz)5O12 (0.05?x<0.4, 0?y<0.004, 0.6?1?x?y<0.95, 0?z<0.004, and 0.001<y+z<0.005), which contains SiO2 as a sintering aid in an amount larger than 0 mass % but not larger than 0.1 mass %, and having an average sinter-grain diameter of 5 ?m or larger. The transparent ceramic has a total light transmittance of 84.0% or greater and a forward scatter of 0.5% or less at an optical path length of 25 mm and a wavelength of 1,064 nm and has a total light transmittance of 84.0% or greater and a forward scatter of 0.5% or less at an optical path length of 25 mm and a wavelength of 1,300 nm. In the formula (1).

Abstract: An optical film includes a transparent substrate having opposite first and second surfaces, a colored layer formed to face the first surface of the substrate, and an optical function layer. A colorant in the colored layer contains at least one of a first coloring material having a maximum absorption wavelength in a range of 470 to 530 nm and an absorption spectral half width of 15 to 45 nm, a second coloring material having a maximum absorption wavelength in a range of 560 to 620 nm and an absorption spectral half width of 15 to 55 nm, and a third coloring material having the lowest transmittance in a wavelength range of 400 to 800 nm is in a range of 650 to 800 nm. A transmittance in one of the absorption wavelength bands of the colorant is 1% or more and less than 50%, and ?E*ab.

Abstract: A light engine including polarization splitting lens unit comprises an illumination subsystem to create an entrance pupil and a polarization splitting lens unit including an angled polarized beam splitter (PBS) and including an entry face, a double pass face, and an exit face, the polarization splitting lens unit positioned in proximity to the illumination subsystem. The light engine further comprising imaging and illumination optics receiving the light from the polarization splitting lens unit, and a display element modulating the light received from the imaging and illumination optics, and reflecting the light back through the imaging and illumination optics. Wherein the polarization splitting lens unit receives the modulated light from the imaging and illumination optics, and outputs the modulated light through the exit face forming an exit pupil.

Abstract: A composite optical element includes a glass lens and a resin lens that are joined together. The resin lens has an aspheric shape. When Nd is a refractive index of the resin lens, ?d is an Abbe number of the resin lens, and ?gF is a partial dispersion ratio of the resin lens, Nd, ?d, and ?gF are appropriately set.

Abstract: A functional patch for use with a contact lens includes an attaching layer and a functional patterned layer. The contact lens and the attaching layer are made of different hydrophilic materials to present two net-like structures respectively contain a plurality of first pores and second pores, and the second pores have pore size smaller than that of the first pores. The attaching layer is adsorbable to and detachable from the contact lens. A part of the functional patterned layer permeates into the second pores and the remaining part of the functional patterned layer is cured on the surface of the attaching layer. The attaching layer has closely arranged molecular chain blocks to form net-like structure having relatively small pore size. Therefore, only a limited amount of the material molecules of the functional patterned layer is permeated into the second pores, allowing the functional patterned layer to have a smooth surface.

Abstract: An ophthalmic device (1) of the present invention has an optical head (2) including a light projection optical system (21) that projects light onto a subject eye (E), a light reception optical system (22) that receives light from the subject eye (E), and a fixation lamp (23) for guiding a line-of-sight direction of the subject eye (E), and a turning drive unit that turns the optical head (2) in a horizontal direction while maintaining positional relationships between the light projection optical system (21), the light reception optical system (22), and the fixation lamp (23). The turning drive unit is composed of a rotational drive unit (4) that rotates the optical head (2) in the horizontal direction and a horizontal drive unit (3) that moves the optical head (2) in the horizontal direction.

Abstract: A head-up display system includes a laminated glass and a projection device. The laminated glass includes an outer glass sheet, a thermoplastic interlayer and an inner glass sheet. The laminated glass includes a first head-up display region and a second head-up display region. The projection device can generate first polarized light and second polarized light. At least about 70% of the first polarized light is p-polarized light, and at least about 70% of the second polarized light is p-polarized light.

Abstract: A double-sided composite spectacle lens and an inject mold therefor are provided. One surface of the spectacle lens is an aspherical surface, and the other surface is a designed aspherical surface used to inhibit astigmatism, and a spectacle lens formed by combining the two surfaces has two areas with different functions: optimizing optical performance, and thinning for aesthetics. By controlling the reduction of diopter and optimizing astigmatism on one surface, and inversely offsetting astigmatism on the other surface, the degree of astigmatism of the spectacle lens formed by combining the two surfaces is significantly lower than a diopter variation, and the degree of oblique astigmatism is significantly reduced. The aesthetic thinning effects of reducing the edge or center thickness of the double-sided composite spectacle lens are significantly enhanced by accelerating reduction of the diopter on one surface and changing from reducing to increasing the diopter on the other surface.

Abstract: The present invention relates to a driving structure for use in an optical actuator, including: a first driving part, which is suitable for mounting a lens and driving the lens to move transversely in the x-axis and y-axis directions; and a second driving part, which is suitable for driving a photosensitive chip to move transversely in the x-axis and y-axis directions, where the lens and the photosensitive chip are configured to be driven simultaneously and to move in opposite directions. Also provided in the present invention are a corresponding photographing method, an optically stabilizing photographing module, and a corresponding assembly method. The present application increases the stabilization travel and the stabilization response speed of the photographing module.

Abstract: A camera module includes a housing having an internal space, a carrier accommodated in the housing and being movable relative to the housing in a direction perpendicular to an optical axis, a ball member disposed between the housing and the carrier, a lens module accommodated in the carrier and movable in an optical axis direction relative to the carrier, an elastic unit connected to the carrier and the lens module, and a driving unit providing driving force to the lens module and the carrier, wherein the driving unit includes a magnet unit disposed on the carrier, a first coil unit disposed in the lens module, and a second coil unit disposed in the housing, and a first signal pattern is disposed in the housing, and the first signal pattern is electrically connected to the elastic unit.

Abstract: An imaging lens includes a central optical path, a plurality of lens elements sequentially arranged along the central optical path, a wide-range low reflection layer, and an infrared light reduction layer. The plurality of lens elements include a first lens element. The wide-range low reflection layer is disposed on an object-side surface of the first lens element, and the average reflectance of the wide-range low reflection layer to light with a wavelength ranging from 750 to 1050 nanometers is less than or equal to 0.98%. The infrared light reduction layer is located closer to an image side than the wide-range low reflection layer, and the average reflectance of the infrared light reduction layer to light with a wavelength ranging from 750 to 1050 nanometers is greater than or equal to 50%. The central optical path passes through a paraxial region of the first lens element.

Abstract: Disclosed herein is an image shake correcting module. The image shake correcting module includes an optical module, a first holder, a first drive unit, a second holder, a second drive unit, a third holder, a housing, an outer cover, and a substrate. The optical module may be mounted in an inner space of the first holder. The first drive unit may include a first drive ball, a first magnet and a first coil for primary driving of the first holder. The first holder may be mounted in an inner space of the second holder. The second drive unit may include a second drive ball, a second magnet, and a second coil for secondary driving of the second holder. The second holder may be mounted in an inner space of the third holder. The third holder may be mounted in an inner space of the housing.

Abstract: The present disclosure is directed to an optical system internally having an intermediate imaging position MI that is conjugate with both of a magnification conjugate point on a magnification side and a reduction conjugate point on a reduction side, the optical system including: a first positive lens group GP1 including a plurality of lens elements and positioned on the magnification side with respect to the intermediate imaging position; a second positive lens group GP2 including a plurality of lens elements and positioned between the first positive lens group GP1 and the intermediate imaging position M1; and a negative lens group GN including a plurality of lens elements and positioned on the reduction side with respect to the intermediate imaging position MI, wherein, during focusing, the first positive lens group GP1 and the negative lens group GN move in an optical axis direction, and the second positive lens group GP2 is stationary.

Abstract: The zoom lens consists of a first unit, a second unit, a third unit, a fourth unit, and a fifth unit in order from the magnification side, and forms an intermediate image. The first unit consists of one lens group which has a positive refractive power. The second unit consists of two lens groups which move during magnification change and has a negative refractive power as a whole at the wide angle end. The third unit includes one or more lens groups which move during magnification change. The fourth unit includes one or more lens groups which move during magnification change.

Abstract: Disclosed is a filter assembly and an unmanned aerial vehicle (UAV). The filter assembly includes a base and a filter holder. The base includes a mounting hole and a convex plate. The mounting hole is defined through the base along a first direction and matched with an outer periphery of a lens. The convex plate protrudes from a periphery of the mounting hole in the base along the first direction, and is configured to press against and match with a protrusion portion of the lens to mount the base on the lens. The filter holder is provided with a filter and detachably mounted on the base.

Abstract: A laminated pane includes first and second panes, a layer stack arranged therebetween including a first thermoplastic intermediate layer, a separating layer, a photopolymer layer with at least one holographic element, a carrier layer, and a second thermoplastic intermediate layer, wherein the photopolymer layer has a thickness of 5 ?m to 50 ?m, the carrier layer contains polyethylene terephthalate (PET), polyethylene (PE), polymethyl methacrylate (PMMA), polycarbonate (PC), polyamide (PA), polyvinyl chloride (PVC), and/or cellulose triacetate (TAC) and has a thickness of 20 ?m to 100 ?m, wherein the carrier layer is arranged directly adjacent the photopolymer layer, and the separating layer contains polyethylene (PE), polyvinyl chloride (PVC), and/or polymethyl methacrylate (PMMA) and has a thickness of 10 ?m to 300 ?m.

Abstract: A method of determining pathologic myopia by using the geometric structure of a posterior sclera of a fundus includes obtaining geometric location data about a fovea, an optic disc, and a deepest point of the eye (DPE) in the posterior sclera of the fundus; obtaining an elevation difference TEPSfovea?DPE between the fovea and the DPE, an elevation difference TEPSdisc?DPE between the optic disc and the DPE, and an elevation difference TEPSfovea?disc between the fovea and the optic disc by using location information about the fovea, the optic disc, and the DPE in the posterior sclera; and determining pathologic myopia by using at least two elevation differences selected from among the elevation difference TEPSfovea?DPE between the fovea and the DPE, the elevation difference TEPSdisc?DPE between the optic disc and the DPE, and the elevation difference TEPSfovea?disc between the fovea and the optic disc.