Abstract: A variable focal length lens device includes: a lens system whose refractive index changes depending on an inputted drive signal; an objective lens disposed in an optical axis common to the lens system; an image detector for detecting an image of a target object through the lens system and the objective lens; a resonance-lock controller for locking the frequency of the drive signal to a resonance frequency of the lens system; and a resonance-lock operation unit for switching enabling and suspending the resonance-lock controller.

Abstract: An optical collimating unit is provided that comprises a laser unit, and a lens having three optical surfaces, being a first refractive surface, a second reflective surface and a third refractive surface. Also provided is a light projection device comprising an optical collimating unit that comprises a laser unit, a lens and an optical component configured to shape laser beams being emitted into respective desired light patterns.

Abstract: One embodiment of a lens driving apparatus may comprise: a bobbin having a first coil disposed on the outer circumferential surface thereof; a position detection sensor which is disposed on the outer circumferential surface of the bobbin and which moves together with the bobbin; a first magnet disposed opposite to the first coil; a housing for supporting the first magnet; upper and lower elastic members which are coupled to the bobbin and the housing; and a plurality of wirings which are disposed on the outer circumferential surface of the bobbin so as to electrically connect at least one of the upper or lower elastic members with the position detection sensor.

Abstract: A driving mechanism is provided and drives an optical element. The driving mechanism includes a holding unit, a base unit, an elastic element, and a driving assembly. The holding unit holds an optical element. The base includes a body and a connecting component. The connecting component is formed in the body by insert molding, and has a first contact and a second contact. The first contact and the second contact are located on different sides of the base, and the first contact is electrically connected to a base unit outside the driving mechanism. The elastic element connects the holding unit to the base, and the second contact is electrically connected to the elastic elements. The driving mechanism drives the optical element to move relative to the base.

Abstract: A variable focal length lens device includes: a lens system whose refractive index is variable in response to an inputted drive signal; an image detector for detecting an image of a target object through the lens system; a lens controller for outputting the drive signal and an illumination signal; and a lens operation unit for adjusting a frequency and amplitude of the drive signal outputted by the lens controller and an image-detection timing for the image detector. The lens controller includes a resonance-lock controller for tuning the drive signal to a resonance frequency of the lens system. The lens operation unit includes a resonance-lock operation unit for switchably enabling and suspending the resonance-lock controller.

Abstract: The present application discloses an organic light emitting device. The organic light emitting device includes a first electrode; an organic layer an the first electrode, the organic layer having an organic light emitting layer; a second electrode on a side of the organic layer distal to the first electrode; an electrochromic layer between the first electrode and the organic layer; and a third electrode between the electrochromic layer and the organic layer.

Abstract: The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of glass material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, the sixth lens is made of glass material, and the seventh lens is made of plastic material. The camera optical lens further satisfies specific conditions.

Abstract: An optical imaging lens assembly includes five lens elements which are, 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 and a fifth lens element. The first lens element has an image-side surface being concave in a paraxial region thereof. The second lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has positive refractive power. The fifth lens element has negative refractive power.

Abstract: Provided is an ultrasonic motor including an annular vibrator and an annular moving member that is brought into pressure-contact with the vibrator. The vibrator includes an annular vibrating plate and an annular piezoelectric element. The piezoelectric element includes an annular lead-free piezoelectric ceramic piece, a common electrode arranged on one surface of the piezoelectric ceramic piece, and a plurality of electrodes arranged on the other surface of the piezoelectric ceramic piece. The plurality of electrodes include two drive phase electrodes, one or more non-drive phase electrodes, and one or more detection phase electrodes. A second surface of the vibrating plate includes a plurality of groove regions extending radially, and the depths of the groove regions change in a circumferential direction along a curve obtained by superimposing one or more sine waves on one another. The ultrasonic motor exhibits a sufficient drive speed while suppressing generation of an unnecessary vibration wave.

Abstract: The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, and the sixth lens is made of plastic material. The camera optical lens further satisfies specific conditions.

Abstract: A device for variably influencing the wavefront of a beam, said device comprising a reflecting or transmitting planar optical element (1) and an actuating and holding means (2) which is connected to the planar optical element (1) via at least three elastic retaining lugs (2.3) such that forces can be introduced into at least one of the retaining lugs (2.3) via at least one actuating element (2.4) arranged in the actuating and holding means (2), which forces are deflected in their direction of action by the bending of the retaining lugs (2.3) such that they cause forces on the peripheral surface (1.3) of the planar optical element (1) whose direction of action (RA) is parallel to the axis of symmetry (A) of the planar optical element (1), allowing the planar optical element (1) to be actively deformed.

Abstract: The present application discloses a camera lens assembly and a camera device equipped with the camera lens assembly. The camera lens assembly includes: a first lens, a second lens, a third lens and multiple subsequent lenses arranged in sequence from an object side to an image side along an optical axis. The first lens, the second lens, the third lens and the multiple subsequent lenses jointly form a total effective focal length f, wherein a combined focal length f12 of the first lens and the second lens and a focal length f3 of the third lens satisfy: ?0.7<f12/f3<0.

Abstract: Provided is a head mounted display device including a housing for providing a darkroom space, a display module in the housing and to display an image, and an optical lens for expanding the image to provide the image to a user. The display module includes a destructive interference structure which removes the image reflected from the optical lens without reflecting the image again.

Abstract: An imaging optical system, including: a first lens being a meniscus lens with a positive refractive power, the first lens having a convex surface facing the object side; a second lens being a biconvex lens; a third lens being a meniscus lens with a negative refractive power, the third lens having a convex surface facing the object side; a fourth lens being a meniscus lens, the fourth lens having a convex surface or a concave surface facing the object side; a fifth lens having a concave surface facing the object side; and a sixth lens having a convex surface facing the image side; at least one surface of two surfaces of the lenses L1 to L6 has an aspherical shape. The imaging optical system satisfies the following conditions (1) and (2): 0.23<Y/f<0.29??(1) 0.9<TTL/f<1.0??(2).

Abstract: A lens includes a curved surface. A plurality of taper shape structures is formed on the curved surface, and each taper shape structure has at least three substantial flat surfaces. P is less than or equal to 500 nm. H is less than or equal to 500 nm. The P refers to the pitch between two adjacent taper shape structures. The H refers to maximum vertical distance between each taper shape structure and the curved surface.

Abstract: An imaging lens which uses a larger number of constituent lenses for higher performance and features compactness and a wide field of view. The imaging lens is composed of seven lenses to form an image of an object on a solid-state image sensor. The constituent lenses are arranged in the following 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 negative refractive power; a fourth lens with positive or negative refractive power as a double-sided aspheric lens; a meniscus fifth lens having a convex surface on the image side; a sixth lens with positive or negative refractive power as a double-sided aspheric lens; and a seventh lens with negative refractive power, in which an air gap is provided between lenses.

Abstract: An optical imaging lens may include a first, a second, a third, and a fourth lens elements positioned in an order from an object side to an image side along an optical axis. Through designing concave and/or convex surfaces of the four lens elements, the optical imaging lens may provide improved imaging quality and optical characteristics, and have the ability to cooperate the demand of present smaller-sized electronic product while the optical imaging lens may satisfy TTL/TL?1.700 and EFL/ImgH?2.500, wherein a distance from the object-side surface of the first lens element to an image plane along the optical axis is represented by TTL, a distance from the object-side surface of the first lens element to the image-side surface of the fourth lens element along the optical axis is represented by TL, an effective focal length of the optical imaging lens is represented by EFL, and an image height of the optical imaging lens is represented by ImgH.

Abstract: Provided is a technique capable of achieving a manually-operated lens shift mechanism in a space-saving manner in regard to a projection type image display apparatus. The lens shift mechanism includes a first base, a second base, a third base to which a projection lens is fixed, a first shift portion moves the projection lens in a vertical direction by moving the second base in the vertical direction with respect to the first base, and a second shift portion which moves the projection lens in a horizontal direction by moving the third base in the horizontal direction with respect to the second base. The first shift portion is arranged along the vertical direction to be coaxial with a first manual operation portion and a first rotation shaft. The second shift portion is arranged along the vertical direction to be coaxial with a second manual operation portion and a second rotation shaft.

Abstract: A light funnel collimator has a central lens surface and a back reflecting surface, shaped to provide a wider background beam and a narrower hotspot beam within but off-center of the wider beam. One of the beams is on-axis of the collimator, and the other beam is off-axis. The reflector is at least partly asymmetrical relative to the axis, and provides or contributes to the off-axis beam.

Abstract: An optical lens adapted to be disposed on a transmission path of a light beam is provided. The optical lens includes a plurality of lenticular lens units extending along the same direction, and the lenticular lens units are disposed side by side along a direction perpendicular to the extension direction thereof, wherein each of the lenticular lens units has a height relative to a bottom surface of the optical lens, adjacent two of the lenticular lens units have a height difference D therebetween, and the optical lens satisfies D ? 2 ? ln ? ( 2 ) ? ? ? n ? ? 2 ?? , wherein n represents a refractive index of the optical lens, ? represents a central wavelength of the light beam, and ?? represents a spectral bandwidth of the light beam. In addition, an optical system and a method of manufacturing an optical lens are also mentioned.