Abstract: An optical block includes a first surface that receives light entering the optical block, a second surface through which the light exits the optical block, and a reflector that reflects light from the first surface towards the second surface. The reflector includes a reflective surface formed by a coating which is textured to attenuate the light transmitted through the optical block. The reflective surface is encapsulated so that its reflective properties are not affected by liquids or contaminants on an outer surface of the coating.

Abstract: A first portion of incoming light and a second portion of incoming light travel in opposite directions within a first optical waveguide. A ring resonator in-couples the first portion of incoming light and the second portion of incoming light from the first optical waveguide, such that the first portion of incoming light and the second portion of incoming light travel in opposite directions within the ring resonator. A second optical waveguide is disposed to in-couple the first portion of incoming light and the second portion of incoming light couple from the ring resonator, such that the first portion of incoming light and the second portion of incoming light travel in opposite directions within the second optical waveguide away from the ring resonator. One or more photodetector(s) are optically connected to receive the first portion of incoming light and the second portion of incoming light from the second optical waveguide.

Abstract: A method for connecting an optical waveguide includes: adjusting an inclination of an optical fiber block with respect to substrate (10), the optical fiber block including through-passage (34), and the substrate including spacer (60) surrounding light input part (12), by holding and bringing optical fiber block (20) into contact with the spacer, and then releasing the optical fiber block; supplying adhesive (70) to outside of the spacer on the substrate; aligning the optical fiber block holding an optical fiber, with respect to the light input part, to maximize intensity of light output from the substrate; compressing the spacer by pushing the optical fiber block including the through-passage toward the substrate; and curing the adhesive, with the spacer compressed.

Abstract: A photoelectric transceiver assembly includes: an electronic integrated circuit, including a first surface, a second surface opposite to the first surface, and a first sidewall located between the first surface and the second surface; a molding compound, performing molding on the electronic integrated circuit around the first sidewall, where the molding compound includes a third surface close to the first surface and a fourth surface close to the second surface, and the molding compound is provided with one or more through mold vias extending from the third surface to the fourth surface; a first redistribution layer, disposed on the first surface and the third surface and including a plurality of first bumps electrically coupled to the first surface and the one or more through mold vias; a second redistribution layer, disposed on the second surface and the fourth surface.

Abstract: A system includes a housing having a front panel, a substrate that is positioned at a distance from the front panel, and a data processor mounted on the substrate. The system includes a first substrate that is positioned at a distance from the front panel, in which a data processor is mounted on the first substrate and a second substrate orthogonally oriented to the first substrate. The system includes a first connector block electrically coupled to the first substrate and capable of receiving radio frequency signals from an optical module and a second connector block electrically coupled to the second substrate and capable of receiving control signals and power supply signals from the optical module.

Abstract: Disclosed is an active optical cable comprising an optical cable; optical modules, arranged at each of two ends of the optical cable and optically coupled with the optical cable, at least one of which is detachably connected with the optical cable; a first connecting terminal connected to one end of the optical cable and optically coupled with the optical cable; a second connecting terminal connected to the optical module and optically coupled with the optical module, the first connecting terminal and the second connecting terminal being optically coupled; and a connecting sleeve which is connected between the optical cable and the second connecting terminal and keeps the first connecting terminal and the second connecting terminal in an optical coupling state, wherein at least one of the optical cable and the second connecting terminal is detachably connected with the connecting sleeve.

Abstract: An optoelectronic package and a method of manufacturing an optoelectronic package are provided. The optoelectronic package includes a carrier. The carrier includes a first region and a second region. The first region is configured to supply power to a processing unit disposed on the carrier. The second region is for accommodating at least one optoelectronic device electrically coupled to the processing unit.

Abstract: Embodiments of the disclosure relate to a lumen. The lumen includes a plurality of optical fibers and a membrane having an inner surface and an outer surface defining a maximum thickness therebetween. The maximum thickness is 50 microns or less. Each optical fiber of the plurality of optical fibers is partially attached to the inner surface of the membrane. Also disclosed are embodiments of a method of manufacturing a lumen that is reversibly configurable between a planar configuration and a non-planar configuration while maintaining a sequence of a plurality of optical fibers and embodiments of an optical fiber cable including a plurality of such lumens.

Abstract: An equipment mounting arrangement for a fiber optic network is disclosed. The equipment mounting arrangement includes a mounting frame and a plurality of terminal supports connected to the mounting frame. Each of the plurality of terminal supports carries at least one terminal bracket and the at least one terminal bracket includes a plurality of shelves. The arrangement further includes a plurality of terminals and at least some of the plurality of shelves includes a respective one of the plurality of terminals. The arrangement includes a cable mount for supporting a plurality of fiber optic cables, where each of the plurality of fiber optic cables has a terminated end including a plurality of fiber optic connectors configured to be connected to the plurality of terminals in the equipment mounting arrangement. A method for configuring a fiber optic network using the equipment mounting arrangement is also disclosed.

Abstract: Systems, assemblies, and methods for selectively defining optical fiber splitter ratio outputs within an enclosure are provided. The system includes an enclosure comprising a feeder cable with a plurality of main optical fibers that are each connected to either an adapter port or to a splitter that is then connected to split adapter ports. Intermediary connectors are selectively connectable to the adapter ports or split adaptor ports, and the intermediary connectors are connected to additional splitters by intermediary optical fibers. The additional splitters are then each connected to distribution optical fibers, which are connected to sets of distribution ports. The sets of distribution ports are positioned in a panel of the enclosure and accessible for connection to downstream installation optical fibers. Various optical splitter ratio outputs for the distribution ports are selectable depending on which adapter ports the intermediary connectors are connected to.

Abstract: A storage unit includes a wound body made of wound linear material and a storage body that stores the wound body. The wound body includes a first spiral part in which the wound linear material is spirally wound in a first winding direction such that a distance between the wound linear material of the first spiral part and a center of the wound body gradually decreases, a first inversion part, disposed inside the first spiral part, that inverts a winding direction of the wound linear material from the first winding direction to a second winding direction opposite to the first winding direction, and a second spiral part, disposed outside the first inversion part, in which the wound linear material is spirally wound in the second winding direction such that a distance between the wound linear material of the second spiral part and the center gradually increases.

Abstract: A terminal system assembly includes a base plate, a spool, an adapter module, and a spool locking washer. The base includes a spindle. The spool may be rotatingly coupled with the spindle of the base plate and to receive an input fiber cable. The adapter module may couple a fiber of the input fiber cable with a fiber of an output fiber cable. The spool locking washer may couple the adapter module with the spindle and may prevent rotation of the spool and the adapter module.

Abstract: An optical fiber cable according to the present disclosure includes a cable core having one or a plurality of optical fiber core wires therein; an outer cover which covers the cable core and has a concave portion or a plurality of convex portions for an outer edge of a cross section perpendicular to a long axis direction of the outer cover; and an impression which is marked on the concave portion or on a portion sandwiched between the plurality of convex portions of a side surface of the outer cover.

Abstract: An installation grip for a fiber optic cable having an outer jacket, optical fibers, at least one strength member, and a ferrule terminating the optical fibers is disclosed. The installation grip includes a tubular body having an internal cavity configured to receive the ferrule, a pulling plug for connection to a tension member, and at least one slot through the installation grip. The at least one slot is configured to receive the at least one strength member of the fiber optic cable such that a tensile load imposed on the installation grip is transferred to the at last one strength member along a load path that bypasses the ferrule. A method of preparing a fiber optic cable for installation in ductwork at an installation site and a method of installing a fiber optic cable using the installation grip are also disclosed.

Abstract: A telescopic/image capture device that allows for the concurrent viewing and capturing an image of an object, wherein the captured image is magnified to the same level than that of the viewed image. Further included are filters incorporated into the device to allow for the attenuation of light in undesired wavelengths while allowing light in desired wavelengths to pass unattenuated. In still a further aspect of the invention, a second telescopic lens is incorporated into the path of light to be captured by the image capture device, wherein the image captured and recorded is of a greater magnification than that of the user viewable image.

Abstract: A camera device includes a circuit board and a lens holder. The circuit board has a through hole, a first surface, and a second surface opposite to the first surface. The through hole penetrates the first surface and the second surface, and the first surface is provided with a photosensitive element. The lens holder has an axle hole and an assembling surface, and the lens holder includes a welding column. The assembling surface is fixed to the first surface of the circuit board through a light curing adhesive layer, so that the photosensitive element is in the axle hole, the welding column passes through the through hole, and the welding column is welded and fixed to the circuit board. A manufacturing method of camera device is also provided.

Abstract: An embodiment comprises: a housing comprising a plurality of protrusions arranged on the upper surface thereof; a magnet arranged on a side portion of the housing; a bobbin having a first coil arranged on the outer peripheral surface thereof, the bobbin being configured to move by means of an interaction between the magnet and the first coil; an upper elastic member coupled to the bobbin and to the housing; and a sensing coil arranged on the side portion of the housing between the protrusions and the magnet, the sensing coil being configured to generate an induction voltage by means of an interaction with the first coil, wherein at least a part of the upper elastic member is arranged on the upper surface of the housing between the protrusions.

Abstract: The present embodiment relates to an actuator device, comprising: a housing; a holder arranged in the housing; a reflection member arranged in the holder; a moving plate arranged between the housing and the holder; a mover rigid coupled to the holder with a first part of the housing placed therebetween; a first magnet arranged in the mover grid; a second magnet arranged in the first part of the housing so that repulsive force is generated between the first magnet and the second magnet; and a buffer member arranged in the first part of the housing, wherein the distance between the mover rigid and the buffer member is shorter than the distance between the first magnet and the second magnet in a first direction in which the first magnet is oriented toward the second magnet.

Abstract: An optical system includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having positive refractive power, a third lens unit, a fourth lens unit having positive refractive power, and a fifth lens unit having negative refractive power. During focusing from infinity to a close distance, a distance between adjacent lens units changes and the second lens unit and the fourth lens unit move toward the object side. At least one of the second lens unit and the fourth lens unit includes two or more lenses. The first lens unit includes two or more negative lenses. A predetermined inequality is satisfied.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens sequentially arranged from an object side. At least two of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens include at least one inflection point. An object-side surface of the sixth lens is concave.

Abstract: In some embodiments there are disclosed folded camera modules comprising a lens with 6 lens elements divided into two lens groups G1 and G2 and an effective focal length EFL, an object side-optical path folding element O-OPFE, an image side-optical path folding element I-OPFE and an image sensor, wherein GI is located at an object side of the O-OPFE and G2 is located at an image side of the O-OPFE, wherein 8 mm<EFL<50 mm, wherein a camera module is divided into a first region having a minimum camera module region height MHM and including G1 and the O-OPFE, and into a second region having a minimum shoulder region height MHS<MHM and including the I-OPFE and the image sensor, wherein an aperture height of the lens is HL and wherein HL/MHS>0.9.

Abstract: An optical system disclosed to an embodiment of the invention includes first and second lens groups sequentially arranged along an optical axis from an object side to a sensor direction and including at least one lens, respectively, and a focal length sign of the first lens group and a focal length sign of the second lens group are opposite to each other and satisfy the following equation: ?1.5<f_2/f_1/0 (f_1 is the focal length of the first lens group, and f_2 is the focal length of the second lens group), the effective diameter (clear aperture) of the lenses included in the first and second lens groups is smaller than a diagonal length of the image sensor, and one lens group of the first and second lens groups may be disposed in the optical axis direction.

Abstract: The risk of deterioration in optical characteristic is reduced. An image pickup lens includes a second lens that has an abutting portion which is located on a rim of a lens surface and which abuts on a frame.

Abstract: A camera module that internally reflects and transmits light, incident in a first direction, in a second direction perpendicular to the first direction, includes a housing with an inner space; a cover coupled to the housing to cover the inner space; a folded module comprising a moving holder movable in the inner space, and a reflective member disposed on the moving holder to change a path of light incident on the reflective member; and a lens module comprising a lens barrel adjacently disposed to the folded module in the inner space and having a plurality of lenses arranged in an optical axis direction to pass light reflected from the reflective member. The cover includes a cover protrusion extending from a surface facing the moving holder, and the moving holder has a groove portion that is opened upward to accommodate the cover protrusion.

Abstract: There is provided an optical imaging system including a prism, a first fixed lens group, a first movable lens group, a second movable lens group, and a second fixed lens group. The prism is configured to refract light reflected from an object side toward an imaging plane and a reflecting member. The prism is disposed on the first fixed lens group and the first movable lens group is configured to change a position of the imaging plane so that an overall focal length is changed. The second movable lens group is configured to adjust a position of the imaging plane so that a focal length for an object is adjusted. The imaging plane is disposed on the second fixed lens group.

Abstract: A lens module includes a plurality of lenses arranged in sequence from an object side to an image side along an optical axis. At least one lens of the plurality of lenses is a freeform lens. An object-side surface and/or an image-side surface of the freeform lens is a freeform surface. An X-axis and a Y-axis are defined as two central axes perpendicular to each other on an image surface of the lens module.

Abstract: An optical system includes a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a third lens L3 with positive refractive power, placed in this order from an object side to an image side. At least one of the first lens L1 and the third lens L3 is made of chalcogenide material, and the second lens L2 is made of glass material. The following inequality is satisfied: 0.75<Np?Nn, where Np is a refractive index of the lens made of the chalcogenide material at a wavelength of 0.9 ?m, and Nn is a refractive index of the second lens at a wavelength of 0.9 ?m.

Abstract: A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a vibration-proof lens group that is movable with a displacement component in a direction orthogonal to an optical axis, and at least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, distances between the first lens group and the front-side lens group, the front-side lens group and the intermediate lens group, the intermediate lens group and the rear-side lens group change. The following conditional expression is satisfied: 0.20<(?fXn)/fM<1.

Abstract: A projection system includes a first lens group having negative power, a second lens group having positive power, a third lens group having positive power, a fourth lens group having negative power, a fifth lens group having positive power, a sixth lens group having positive power, and a seventh lens group having positive power that are sequentially arranged from the enlargement side toward the reduction side. The second lens group, the third lens group, the fourth lens group, the fifth lens group, and the sixth lens group are moved with the first lens group and the seventh lens group fixed to change the magnification of the projection system.

Abstract: The invention relates to a light microscopy method, comprising illuminating a sample (S) comprising fluorescent dye molecules (F) by an excitation light beam (14), illuminating the sample (S) by a first impeding light beam (15), generating an intensity distribution (D) of the impeding light (I) with at least one local minimum (M), providing additional impeding light (I) in an area (A) overlapping with the local minimum (M), obtaining a first fluorescence signal from the area (A) in the absence of the additional impeding light (I), and obtaining a second fluorescence signal from the area (A) in the presence of the additional impeding light (I), and correcting the first fluorescence signal by the second fluorescence signal, wherein at each point of the intensity distribution (D) at which the impeding light (I) has a light intensity (II) greater than a saturation intensity of the impeding light (I), the light intensity (II) of the impeding light (I) differs by 20% or less between the intensity distribution (D) i

Abstract: Disclosed are an optical instrument, an imaging system, and an imaging method for a miniature multi-photon microscope, relating to the optical configuration field. The optical instrument is configured to have a fluorescence excitation optical path and a fluorescence collection optical path. The optical instrument includes a condenser, and the condenser includes a first lens group and a second lens group separately disposed. The first lens group is located in the fluorescence collection optical path, the second lens group is located in the fluorescence excitation optical path and the fluorescence collection optical path. A relative distance the second lens group and a miniature objective is less than a first preset distance threshold. A collection efficiency of scattered fluorescence of the miniature multi-photon microscope may be improved, thereby improving an imaging signal-to-noise ratio and an imaging depth when a sample to be test with a scattering characteristic is observed.

Abstract: A microscope with at least one optical beam path having a plurality of optical elements, of which at least two per beam path are adjustable along the beam path and relative to one another in order to effect a change in an optical magnification of an image generated by means of the optical beam path; an operating device for selecting the magnification; and a gearbox for generating and transmitting a positioning displacement of the adjustable optical elements along the optical beam path which is associated with a magnification selected on the operating device and effected by means of a drive. A drive is assigned to each of the adjustable optical elements of an optical beam path or corresponding adjustable optical elements of the beam paths, so that the adjustable optical elements of an optical beam path can be displaced independently of one another.

Abstract: An imaging system having multiple cameras can be used for simultaneously imaging the top and side of samples in wells of a wellplate under multiple illumination sources, with each well in the wellplate adjacent to a set of two angled optical elements configured for viewing the two opposite side of the well. The cameras, the wells, and the illumination sources are configured to match each other to provide a high throughput imaging system, which can be used for a wide range of applications including pharmaceutical drug discovery, toxicology and a patient specific oncology.

Abstract: The present relates to chromatic focusing via filter thickness tuning. Chromatic focusing can be achieved via an imaging system that includes a sample holding plane, a light source that illuminates the sample on the plane, and an imager that captures an image of the sample on the plane. The imager includes a sensor, a lens, and a filter wheel defining a plurality of filter apertures including a first aperture containing a first filter passing light of a first color and having a first focal point shift, and a second aperture containing a second filter passing light of a second color and having a second focal point shift. The focal point shifts cause both light of the first color passing through the first filter and through the lens and light of the second color passing through the second filter and through the lens to focus on the sensor.

Abstract: Various embodiments described herein may include a rotatable assembly including a rotatable knob, the rotatable assembly further including: a collet or other body having capturing member(s) to at least partially surround or flank a spindle; and a grippable device usable to move the collet relative to the spindle to disengage the capturing member(s) from the spindle; wherein the knob and the spindle rotate together as a unit when the capturing member(s) are engaged to the spindle, and wherein the knob rotates relative to the spindle when the capturing member(s) are disengaged from the spindle. Other embodiments may be disclosed and/or claimed.

Abstract: Provided are an endoscope imaging device and an endoscope in which drive malfunction of a lens drive unit is suppressed. An endoscope imaging device includes, on a distal end side, a plurality of lenses that include a first movable lens which is movable along an optical axis direction, and a sensor that captures a subject image formed by the plurality of lenses.

Abstract: A centering aid is for centering borescopes. The centering aid includes an elongate central body with a passage channel for borescope lines and with a spacer device. The spacer device extends variably in a radial direction over an entire circumference of the central body. The spacer device is configured to support the central body in at least two support planes which are mutually spaced apart along the central body and run perpendicularly to a longitudinal direction of the central body.

Abstract: A magnifying lamp with a camera, and a system comprising the magnifying lamp are provided. The magnifying lamp includes a lamp head including a magnifying lens, a light source, and the camera, and an arm supporting the lamp head. The camera is capable of capturing a still image or a video. The magnifying lamp further includes a port or other connection for communicating with an external device to send image data from the camera to the external device.

Abstract: A lighting assembly including a plurality of lighting sources or modules arranged concentrically about an inner circumference of the lighting device, wherein the plurality of lighting sources or modules emit light in at least one of a plurality of wavelength ranges (UV, visible (e.g., blue, green, yellow, orange, red, white, etc.), IR) onto a lighting director device that redirects the emitted light toward a lens system, the lens system focusing the light onto a viewing point. Further disclosed is a passthrough within the lighting director device that allows light positioned on a base of the lighting device to pass through the lighting director.

Abstract: An oscillator system includes an oscillator structure configured to oscillate about a first axis according to a first oscillation and oscillate about a second axis according to a second oscillation; a first driver configured to drive the first oscillation, detect first zero-crossing events of the first mirror, and generate a first position signal based on the detected first zero-crossing events; a second driver configured to drive the second oscillation, detect second zero-crossing events of the second mirror, and generate a second position signal based on the detected second zero-crossing events; and a synchronization controller configured to receive the first and the second position signals, and synchronize at least one of a phase or a frequency of the second oscillation with at least one of a phase or a frequency of the first oscillation, respectively, based on the first and the second position signals.

Abstract: An optical beam director is described that include at least one dispersive component configured to receive light and to be rotated about a rotational axis for beam steering in at least one dimension. The at least one dispersive component includes two prisms and the beam director is configured to rotate the two prisms in counter directions and to rotate at least one of the prisms at a variable rate. Spatial estimation systems including the optical beam director and methods of spatial estimation are also described.

Abstract: Techniques are disclosed to implement a vehicle camera lens cleaning systems that selectively utilize different cleaning modes for the vehicle camera lenses based upon various conditions. The different cleaning modes may be used on a per vehicle camera basis to provide specific types of cleaning to each of the vehicle cameras. The cleaning modes may include the use of air and/or liquid cleaning, which may be provided to each of the vehicle cameras independently.

Abstract: A method for making a single-sided pumped laser device may include determining initial relative spacings of a reflector with respect to a laser medium body having a known absorption coefficient, and to a laser pump having known divergence angles of pump light to be directed at a side of the laser medium body. A merit function defining a desired absorption profile of the pump light passing through the laser medium body may be determined. An optical model may be operated based on the merit function and the determined absorption coefficient, divergence angles and initial relative spacings to determine a curvature of the reflector, and adjusted relative spacings among the laser medium body, the laser pump, and the reflector. The laser medium body, the laser pump, and the reflector may be assembled according to the determined curvature of the at least one reflector and the adjusted relative spacings to make the single-sided pumped laser device having a symmetrical absorption profile.

Abstract: Disclosed are an imaging module and a head mount display, wherein, the imaging module comprises a display screen, a glued lens set, a first phase retarder and a polarizer. The display screen has a light-emergent surface for emitting light. The glued lens set is provided in a light-emergent direction of the display screen and comprises a first lens and a second lens which are glued and sequentially provided along a propagation direction of light. The first phase retarder is provided on a light-incident surface of the first lens. The polarizer is provided on a surface of the first phase retarder facing away from the first lens.

Abstract: Color-selective waveguides, methods for fabricating color-selective waveguides, and augmented reality (AR)/mixed reality (MR) applications including color-selective waveguides are described. The color-selective waveguides can advantageously reduce or block stray light entering a waveguide (e.g., red, green, or blue waveguide), thereby reducing or eliminating back-reflection or back-scattering into the eyepiece.

Abstract: Tunable optical assemblies and/or optical systems comprising such tunable optical assemblies that are corrected, at least to first order, for tuning-induced and/or tuning-independent spherical and chromatic aberrations. In an example embodiment, a tunable optical assembly comprises a tunable lens; and an intermediate focal plane defining (IFPD) objective. The IFPD objective is disposed upstream of the tunable lens in the tunable optical assembly and is configured to define an intermediate focal plane disposed between the IFPD objective and the tunable lens. In an example embodiment, the IFPD objective is an air objective.

Abstract: A method for operating a reflection display system is provided. The reflection display system includes a display unit configured with a micro-LED display in order to output the display image via a display surface of the display unit. The method includes operating at least some of the LED diodes of the micro-LED display in sensor fashion in order in each case to detect a light intensity of incident ambient light; recognizing that a foreign object is present on the display surface depending on the measured light intensities in the LED diodes operated in sensor fashion; and signaling a disturbance of the display of the display image in the event of the foreign object being recognized on the display surface.

Abstract: A head up display arrangement presents a virtual image to a human driver of a motor vehicle. The arrangement includes a picture generation unit emitting a light field such that the light field follows an optical path, is reflected by a windshield of the motor vehicle, and is visible to the human driver as the virtual image. A glare trap lens is positioned in the optical path between the picture generation unit and the windshield and passes the light field. The glare trap lens improves an optical characteristic of the virtual image as seen by the human driver. The glare trap lens includes an outer surface having an elongate rib thereon. The rib is positioned to block stray light that has been reflected off of the outer surface of the glare trap lens.

Abstract: Systems and methods for generating head-up displays (HUDs) using waveguides incorporating Bragg gratings in accordance with various embodiments of the invention are provided. The term HUD is typically utilized to describe a class of displays that incorporates a transparent display that presents data without requiring users to look away from their usual viewpoints. HUDs can be incorporated in any of a variety of applications including (but not limited to) vehicular and near-eye applications, such as googles, eyewear, etc. HUDs that utilize planar waveguides that incorporate Bragg gratings in accordance with various embodiments of the invention can achieve significantly larger fields of view and have lower volumetric requirements than HUDs implemented using conventional optical components.

Abstract: An electronic device may include a display and a lens module through which the display is viewable. The lens module may include a tunable lens with an adjustable spherical power, cylindrical axis, and/or cylindrical power. To tune the tunable lens to compensate for a viewer's eyesight, the display may present at least one target. The optical power of the tunable lens may be set based on the point of gaze relative to the at least one target. Multiple targets with associated optical powers may be presented and the optical power of the tunable lens may be set depending on which target is aligned with the point of gaze. The display may present an image through a masking layer with a ring of pinhole pairs. The electronic device may include an input device that receives user input regarding a perceived image associated with the display and the masking layer.