Abstract: In a lens optical system having first, second, and third lenses that are arranged between an object and an image sensor where an image of the object is formed, in order from an object side, the first lens has a positive (+) refractive power and is convex toward the object, the second lens has a negative (?) refractive power and is convex toward the image sensor, and the third lens has a positive (+) refractive power and at least one of an incident surface and an exit surface of the third lens has at least one inflection point between a center portion and an edge thereof. The lens optical system satisfies the following inequality that 0.5<f1/f<0.8, in which f1 is a focal length of the first lens and f is a total focal length of the lens optical system.

Abstract: Disclosed is a camera module. The camera module includes a lens barrel; a first lens unit having a first outer peripheral shape in the lens barrel; a second lens unit having a second outer peripheral shape in the lens barrel; and a housing coupled with the lens barrel.

Abstract: A thin eyeglasses joint structure includes a glasses frame, a temple, and a joint member. The glasses frame includes a first joint portion having a joint section and a fixture section formed at an outer end of the joint section. The temple includes a second joint portion. The joint member includes two spaced connecting slots and a fixing slot. The joint section and the fixture section of the glasses frame are held in the connecting slots and the fixing slot of the joint member, respectively. The joint member has an axle hole penetrated by and coupled with the second joint portion of the temple to develop the thin eyeglasses joint structure without requirement of any screw.

Abstract: A first lens group including two aspherical lenses, a second lens group consisting of three negative meniscus lenses, each negative meniscus lens having a convex surface facing the enlargement side, a third lens group having a negative refractive power and including at least one cemented lens, and a fourth lens group having a positive refractive power and including at least two cemented lenses and one aspherical lens are arranged in this order from the enlargement side. Predetermined conditional expressions are satisfied.

Abstract: The present invention aims to provide a lens driving device. Inclination generated by a lens support can be reduced when a camera shoots towards any direction, so that distortion cannot be generated for a shot image. Each of a front side spring component and a back side spring components includes an inner side retaining part, an outer side retaining part, two wrist parts, two inner side connecting parts and two outer side connecting parts. The two wrist parts extend along the circumferential direction and are used for connecting the inner and outer side retaining parts. The inner side connecting parts connect one ends of the wrist parts with the inner side retaining part. And the outer side connecting parts connect the other ends of the corresponding wrist parts with the outer side retaining part. The extending angle of each wrist part is at least 180 degrees.

Abstract: A laminated glazing comprising an SPD ply comprising a suspended particle device having a low light transmission off-state and a high light transmission on-state, at least one interlayer ply comprising an interlayer material, and at least one glazing ply is disclosed. The interlayer material has been dried to a predetermined moisture content to increase the time over which the suspended particle device is switchable between the low light transmission off-state and the high light transmission on-state. Use of a dried interlayer to increase the time over which an SPD film is switchable between a low light transmission off-state and a high light transmission on-state is also disclosed. Additionally a process for producing the aforementioned laminated glazing is disclosed. It has been found that the moisture content of the interlayer material is a factor in determining the switching characteristics over time of an SPD film incorporated into a laminated glazing.

Abstract: The present invention relates generally to an arcuate liquid meniscus lens with a meniscus wall. Some specific embodiments include a liquid meniscus lens with a meniscus wall essentially in the shape of a conical frustum with multiple voltage zones that may have variable voltages applied across the zones. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.

Abstract: Dry-erase drawing sheets, a drawing apparatus, and a dry-erase drawing kit are described. The drawing sheets have a non-lenticular or a lenticular lens arrangement on a top surface, material layers comprising a body of the sheet, and images printed on surfaces of one or more of the material layers. The images are configured to sufficiently interact with the lens arrangement to exhibit a three-dimensional visual and/or animated effect when viewed through the top surface. The drawing sheets also include a dry-erase compatible layer overlying the top surface. The drawing apparatus includes a frame that has a central opening and a backing member that releasably couples to the frame. Together the frame and backing member retain the drawing sheets within the central opening of the frame during use. The drawing sheets, drawing apparatus, and one or more dry-erase crayons or markers are provided in the kit.

Abstract: Disclosed herein is a method of calculating tear film lipid and aqueous layer thicknesses and/or corneal surface refractive index from interferometry data obtained from simultaneous measurements of the aqueous and lipid layers of the tear film along with a measurement of the corneal surface reflectance.

Abstract: An eyewear system including eyeglasses having first and second lenses; first and second nose pads; and a bridge operably connecting the first and second lenses, the bridge being bendable from a bridge rest position to permit relative movement between the first and second nose pads and providing a bridge pinch force of 50 g or less between the nose pads when the nose pads are moved 7 mm or less from the bridge rest position.

Abstract: Eyeglasses may include a frame body and at least one lens carried by the frame body, and at least one display carried on at least one exterior surface of the frame body and configured to display a changeable image thereon. The at least one display may be conformal to the at least one exterior surface. The eyeglasses may further include a communications interface carried by the frame body, and a controller carried by the frame body and coupled to the at least one display and the communications interface. The controller may be configured to receive display data via the communications interface, and selectively change the image on the at least one display based upon the received display data to thereby change an external visual appearance of the frame body.

Abstract: A method for manufacturing an electrowetting device provides a first fluid on a surface of a substrate. The method includes the steps of immersing part of the substrate in a second fluid, the second fluid being immiscible with the first fluid, and a surface of the second fluid forming a gutter along the surface of the substrate; providing a quantity of the first fluid in the gutter; and moving the gutter along the surface of the substrate, the surface of the substrate and a horizontal plane forming an angle between 100 degrees and 170 degrees. Also disclosed is an apparatus for performing the method.

Abstract: An eyewear is provided. The eyewear includes lenses interconnected via a lens bridge and a nose clamp connected to the lens bridge or lenses. The nose clamp includes nose pads which are mountable onto a nose of a user, wherein the nose pads are configured for accommodating noses of varying width without substantially affecting a distance between the lenses or their orientation on the face of the user.

Abstract: An electrowetting display apparatus includes an array substrate, an opposite substrate, and an electrowetting layer. The array substrate includes a base substrate having a plurality of pixel areas and a plurality of pixel electrodes respectively arranged in each of the pixel areas. The pixel electrodes in each pixel area are spaced apart from each other at regular intervals and each have an island pattern shape.

Abstract: A varifocal lens barrel includes a plurality of lens groups, each of which are linearly movable in the optical axis direction thereof without rotating about the optical axis during a zooming operation and during a focusing operation, including a base barrel which is linearly movable in the optical axis direction by rotation of a zoom operational ring, wherein lens frames of the respective lens groups are each supported by the base barrel.

Abstract: An optical system includes, in order from an object side to an image side, a first lens unit of a positive refractive power, an aperture diaphragm, and a second lens unit of a positive refractive power. The first lens unit includes, in order from the object side to the image side, a cemented lens Lp1 made by joining a first lens of a positive refractive power and a second lens of a negative refractive power with each other, and a third lens of a positive refractive power which has a meniscus shape. The predetermined conditions are satisfied.

Abstract: A lens drive device comprises a lens holder, a piezoelectric actuator, a ball member held rotatably, and an biasing member configured to apply an biasing force to the lens holder toward the piezoelectric actuator through the ball member. The lens holder has a projection projecting outward from an outer peripheral surface and extending in a direction intersecting the projecting direction and optical axis. A side wall face of the projection is formed with a groove extending along the optical axis and engaging the ball member. A position receiving the biasing force from the biasing member and a position receiving the drive force from the actuator in the lens holder oppose each other through the projection interposed therebetween.

Abstract: The imaging device includes a lens barrel, which itself includes a first frame, a second frame rotatably supported by the first frame, a lens mount including a contact face that comes into contact with the main body of a camera body, and a linking portion for linking the lens mount and the first frame on the outside of the contact face, with at least part of the second frame being disposed between the linking portion and the contact face along the optical axis direction; and an imaging element for converting an optical image formed by the lens barrel into image data.

Abstract: An ophthalmologic apparatus comprises an optical measurement system that radiates measurement light to an eye to be examined, an imaging unit that takes a cross sectional image of the eye by using reflected light of the measurement light from the eye, and a controller that controls the optical measurement system and the imaging unit. When the optical measurement system is positioned at a measurement position, the controller obtains a two-dimensional cross sectional image by the imaging device. One axis of the two-dimensional cross sectional image extends in a vertical direction of the eye, and another axis of the two-dimensional cross sectional image extends in a depth direction of the eye. The controller determines whether the eye is in an examinable state or not based on the two-dimensional cross sectional image.

Abstract: A pair of eyeglasses includes a frame, two lenses, two first magnets, two temples, and two fasteners. The frame includes two lens-holding portions and two magnet-seats. The lenses are held by the lens-holding portions, respectively. The first magnets are disposed at the magnet-seats respectively. The temples are connected with two sides of the frame respectively. The fasteners, each having a second magnet, are pivoted on the frame, and are rotatable with respect to the frame, so that the respective first magnet and the respective second magnet attract each other to fix the respective lens.