Apparatus and systems for an ophthalmic device having alignment features that aid assembly of a liquid filled layered stack are disclosed herein. An example apparatus may include first, second, and third optical elements arranged in a stack, with each optical element including alignment and separation features. The alignment and separation features may form an optic region and a dam region. The optic region encircles an optical axis of each of the optical elements. The dam region includes a first dam formed due to the first and second optical elements being in contact, and a second dam formed due to the second and third optical elements being in contact, wherein the dam region determines an optic region gap width.

An ophthalmic lens includes a first region corresponding to a first area of an optical surface of the ophthalmic lens and a second region corresponding to a second area of the optical surface of the ophthalmic lens different from the first area The second region has an optically-switchable component switchable between a first optical state and a second optical state different from the first optical state. In the first optical state the second region partially scatters or defocuses light incident on the second area.

Systems and methods for providing an optical system in a head-mounted display (HMD) that is operable to modify virtual image light to correct for one or more vision conditions of a user's eyes. The optical system includes a left optical subsystem for the left eye and a right optical system for the right eye. Each optical subsystem includes a first correction portion and a second correction portion each having a lens assembly. A first lens assembly includes a first set of lenses having a first lens selectively adjustable along a first axis transverse to an optical path of the virtual image light. A second lens assembly includes a second set of lenses having a second lens selectively rotatable around a second axis transverse to the first axis. Selective adjustment of the first lens and the second lens helps to correct for the vision conditions in the user's eyes.

Tunable optical device comprising an optical element, an actuator and a transmission unit, wherein the transmission unit comprises a first fiber, the first fiber is arranged to transmit a tensile force from the actuator to the optical element, and the tensile force result in a change of an optical property of the optical element.

An electronic loupe (400) features a view piece (401) mounted to a headpiece (405) by a linkage (406). A camera (402) and LED light (403) are mounted (404) in front of the view piece (401) to provide an image in the view piece (401) on displays (not shown) for the user. A control box (410) may be wired to the electronic loupe, or wirelessly connected, or the controls for the electronic loupe may reside on the view piece (401) and the headpiece (405). Other controls, such as a remote control or a foot pedal, are also disclosed.

The present invention describes a system for changing the properties of the lenses to create changes in focus, magnification, and optical stabilization without changing the shape of the lens or moving the lenses. It uses an acoustic wave that when propagated through the lenses, creates a standing wave that changes the diffractive capabilities of the lens. It involves the properties of many materials to change the diffractive properties when subjected to acoustic waves. The acoustic waves are generally accomplished with a piezo electric transducer or modulator. The frequencies used are in the RF range, depending on the substrate. Substrates used include glass and silicon, as well as more esoteric transparent materials. The system described in the present invention involves the development of a lensing mechanism that comprises one or more acoustio-optic modulator(s), a transparent or semi-transparent substrate where the modulation is applied, and a non-parallel standing wave being propagated in the substrate.

A method of fabricating a lens element for an adjustable power lens of the kind comprising two lens elements that are slidable relative to one other in a direction transverse the optical axis of the lens and have respective lens surfaces that are shaped to act together to form a corrective lens, the power of which varies according to the relative disposition of the two lens elements, the method comprising the steps of forming a lens puck having two opposite faces, which are shaped to form opposite lens surfaces of one of the lens elements of the adjustable power lens, the puck having at least one alignment feature, and thereafter edging the puck to a desired eye shape with reference to the alignment feature.

A method for preparing the double-sided composite thinning zoom concave lens, includes steps of: S1: establishing the a front surface mathematical model and a back surface mathematical model in an optical software; S2: establishing an evaluation function comprising an optimized value of astigmatism and an edge thickness of the lens; and S3: inputting a structural parameters of the lens blank and the prescription power, optimizing one by one using the least square method according to the evaluation function to obtain data of a front surface and a rear surface of the lens.

An ophthalmic device includes an accommodating optic having adjustable optical power, an optical tap positioned within a vision of an eye when the ophthalmic device is mounted in or on the eye, an image sensor positioned outside of a foveal vision of the eye when the ophthalmic device is mounted in or on the eye, and a controller coupled to the accommodating optic and the image sensor. The optical tap redirects a portion of the vision light that passes through the accommodating optic as tapped light. The image sensor is aligned to receive the tapped light from the optical tap and adapted to generate image data indicative of a focus of the vision light in response to the tapped light. The controller is adapted to generate an accommodation control signal that manipulates the adjustable optical power of the accommodating optic based upon the image data.

An intra-ocular lens having an air-filled collapsible cavity situated between two optical elements wherein air is transferred from optical regions of the collapsible cavity to its peripheral haptic regions after being compressed by external force.