Abstract: An imaging optical lens assembly includes, 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, a fifth lens element and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element with refractive power has both an object-side surface and an image-side surface being aspheric. The fourth lens element with refractive power has both an object-side surface and an image-side surface being aspheric. The fifth lens element with refractive power has both an object-side surface and an image-side surface being aspheric. The sixth lens element with refractive power has both an object-side surface and an image-side surface being aspheric.

Abstract: A micromirror device includes: a mirror part; a first actuator in which a pair of semi-annular actuator parts surrounds the mirror part; a connecting part that connects the mirror part and the first actuator such that the mirror part is rotatable around a first axis; a fixing part that is disposed at an outer periphery of the first actuator; and a second actuator in which a pair of meandering type actuator parts are disposed with the first actuator interposed therebetween. Each of the pair of meandering type actuator parts is disposed such that a longitudinal direction of the rectangular plate-like part is a direction along the first axis, one end of each meandering type actuator part is connected to an outer periphery of each of the pair of semi-annular actuator parts, and another end of each meandering type actuator part is connected to the fixing part.

Abstract: An imaging optical system has an image circle defined on an imaging element. The imaging optical system includes: lens elements arranged from an object side to an image plane side, and a diaphragm arranged between two of the lens elements. The lens elements include freeform lens elements, each having a freeform surface that is an asymmetrical surface with respect to a long side direction and a short side direction which cross with each other with a first diameter of the image circle in the long side direction being larger than a second diameter of the image circle in the short side direction. At least two of the freeform lens elements are located on an object side of the diaphragm. The imaging optical system satisfies a condition based on a summation for freeform surfaces of freeform lens elements located on the object side of the diaphragm.

Abstract: Provided are a light guide element and an image display apparatus capable of suppressing the occurrence of multiple images.

Abstract: Eyewear including a frame, a projector supported by the frame, and a lens supported by the frame. The lens has a first surface facing an eye of the user and a second surface facing away from the eye of the user when the frame is worn. The lens also includes a waveguide defined by the first and second surfaces to receive light from the projector. An input light coupler and an output light coupler are on the first surface of the lens and at least one reflector is positioned on a second surface of the lens to redirect light received from the input coupler and/or the output coupler to redirect light having an angle of incidence with respect to the second surface of the lens that would result in that portion of the light exiting the waveguide through the second surface in the absence of the at least one reflector.

Abstract: A system including a steerable mirror, a waveguide, first optics, intermediate optics, and final optics. The system includes a first light path for a foveal image element, the first light path including the first optics, the steerable mirror to steer a position of the foveal image element to a particular orientation, intermediate optics, and the final optics to direct the foveal image element to an in-coupling region of the waveguide. The system further includes a second light path for a field image element, the second light path including final optics.

Abstract: An ophthalmic lens element includes an upper distance viewing zone and a lower near viewing zone. The upper distance viewing zone includes a central region with a first refractive power for clear distance vision and peripheral regions that are relatively positive in power compared to the first refractive power. The lower near viewing zone has a central region that is relatively positive in power compared to the first refractive power to account for accommodative lag. The powers of the peripheral regions of the lower near viewing zone are one of: i) equal to the power of the central region of the lower near viewing zone, ii) relatively positive in comparison to the power of the central region of the lower near viewing zone.

Abstract: Various embodiments disclosed herein include an optical module. The optical module may include a deformable lens and an actuator configured to be deflectable to cause a change in the shape of the deformable lens to alter light passing through the optical module. In various examples, the optical module may include a stop structure configured to mechanically stop the actuator from deflecting beyond a threshold deflection in at least one direction. In some cases, the stop structure may be used for calibration purposes. Additionally, or alternatively, the stop structure may be configured to define an aperture stop that limits an amount of light that passes through the optical module. Furthermore, in some embodiments, the stop structure may be configured to hide the actuator when the optical module is viewed in plan.

Abstract: An optical device includes: a lens including a first lens portion having a first curved surface with a first curvature and a second lens portion having a second curved surface corresponding to the first curved surface; a display device disposed on a first side surface of the lens; a convex lens disposed between the first side surface of the lens and the display device; and a reflector disposed on the first curved surface of the first lens portion of the lens, the reflector configured to reflect light of the display device refracted by the convex lens toward a user's eye.

Abstract: A head mounted display with wide field of view (WFOV) is disclosed. A conventional small display is used in conjunction with a Beam Steering Mechanism (BSM) to dynamically steer the FOV of the displayed image at a very fast rate to provide an effectively WFOV for immersive visual experience. An electrically actuated switchable Steering Mechanism (SM) is provided within the display projection module that steers the projected image towards different portions of the lens at a fast rate. The steering can be either in one, two or three dimensions. The steering allows for the displayed image to be wider field of view (FOV) to the observer than conventionally projected images that are small fixed FOV. The SM is steered at a high rate so as to be indistinguishable to the human observer. The steering can be controlled in a gaze tracked dynamic, on-demand fashion so as to save power consumed by the display system.

Abstract: A lens moving apparatus includes a bobbin including a first coil disposed therearound, a first magnet disposed to face the first coil, a housing for supporting the first magnet, upper and lower elastic members each coupled to both the bobbin and the housing, a base disposed to be spaced apart from the housing by a predetermined distance, a second coil disposed to face the first magnet, a printed circuit board on which the second coil is mounted, a plurality of support members, which support the housing such that the housing is movable in second and/or third directions and which connect at least one of the upper and lower elastic members to the printed circuit board, and a conductive member for conductively connecting the upper and lower elastic members.

Abstract: A position detection device of a VR device is provided. A gear rack and a gear are provided between the left lens barrel and the right lens barrel, and the gear rack is made to be occluded with the gear. A magnet is fixed at a preset position, and a magnetic induction intensity of the magnet set based on a relative position relationship between the left lens barrel and the right lens barrel in the VR device is detected by means of a Hall sensor. A distance between the Hall sensor and the magnet is calculated according to the magnetic induction intensity.

Abstract: The present disclosure discloses an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, wherein each of the first through the eighth lenses has refractive power. The first lens has positive refractive power. The third lens has positive refractive power, and each of an object-side surface and an image-side surface thereof is a convex surface. An object-side surface of the sixth lens is a convex surface. The eighth lens has negative refractive power, and an object-side surface thereof is a concave surface. A total effective focal length f of the optical imaging lens assembly and an entrance pupil diameter EPD of the optical imaging lens assembly may satisfy f/EPD?2.0.

Abstract: The present disclosure discloses an optical lens assembly. The optical lens assembly may include, sequentially from an object side to an image side along an optical axis, 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 may have negative refractive power, a convex object-side surface and a concave image-side surface. The fourth lens may have positive refractive power, a convex object-side surface and a convex image-side surface. The fifth lens may have positive refractive power, a convex object-side surface and a convex image-side surface. The sixth lens may have negative refractive power, a concave object-side surface and a concave image-side surface. The seventh lens may have positive refractive power and a convex object-side surface.

Abstract: A camera optical lens is provided. The camera optical lens includes, from an object side to an image side, a first lens, a second lens having a positive refractive power, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. The camera optical lens satisfies following conditions: 1.60?f1/f?3.00, and 2.50?d13/d14?12.00, where f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d13 denotes an on-axis thickness of the seventh lens, and d14 denotes an on-axis distance from an image side surface of the seventh lens to an object side surface of the eighth lens. The camera optical leans according to the present disclosure has good optical performance while satisfying design requirements for ultra-thin and wide-angle lenses having large apertures.

Abstract: A stereoscopic vision endoscope objective optical system includes, in order from an object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a rear-side lens group having a positive refractive power. The rear-side lens group includes a first rear group and a second rear group. The first lens group and the second lens group are disposed so that an optical axis of the second lens group coincides with an optical axis of the first lens group. The optical axis of the first lens group is located between an optical axis of the first rear group and an optical axis of the second rear group. Each of the first rear group and the second rear group includes a first sub group, an aperture stop, and a second sub group, and the first sub group includes a negative lens.

Abstract: Techniques are described for forming a gradient index (GRIN) lens for propagating an electromagnetic wave comprising receiving, by a manufacturing device having one or more processors, a model comprising data specifying a plurality of layers, wherein at least one layer of the plurality of layers comprises an arrangement of one or more volume elements comprising a first dielectric material and a second dielectric material, wherein the at least one layer of the plurality of layers has a dielectric profile that is made up of a plurality of different effective dielectric constants of the volume elements in the layer, and generating, with the manufacturing device by an additive manufacturing process, the GRIN lens based on the model.

Abstract: The present disclosure relates to optical devices and systems, specifically those related to light detection and ranging (LIDAR) systems. An example device includes a shaft defining a rotational axis. The shaft includes a first material having a first coefficient of thermal expansion. The device also includes a rotatable mirror disposed about the shaft. The rotatable mirror includes a multi-sided structure having an exterior surface and an interior surface. The multi-sided structure includes a second material having a second coefficient of thermal expansion. The second coefficient of thermal expansion is different from the first coefficient of thermal expansion. The multi-sided structure also includes a plurality of reflective surfaces disposed on the exterior surface of the multi-sided structure. The multi-sided structure yet further includes one or more support members coupled to the interior surface and the shaft.

Abstract: The invention relates to a waveguide display element comprising a waveguide body and an in-coupling grating (21) arranged to the waveguide body. The in-coupling grating (21) is configured to couple incoming light into the waveguide body into two separate directions (26A, 26B) using opposite diffraction orders (IC:+1, IC:?1) for splitting the field of view of the incoming light. Further the in-coupling grating (21) is configured, typically by setting its period suitably short, such that said coupling takes place only at wavelengths below a threshold wavelength residing in the visible wavelength range. The invention also relates to a waveguide stack (51 A, 51 B, 51 C).

Abstract: The present disclosure provides a prime lens module and an in-vehicle camera system. From an object side to an imaging side thereof, the prime lens module sequentially includes: a first lens with a negative focal power, a second lens with a negative focal power, a third lens with a positive focal power, a fourth lens with a positive focal power, a fifth lens with a positive focal power, a sixth lens with a negative focal power, and a seventh lens with a positive focal power. The first lens is a meniscus spherical lens. The second lens is a biconcave spherical lens. The third lens is a biconvex spherical lens and bonded to the second lens. The fourth lens is a biconvex spherical lens or a biconvex aspheric lens. The fifth lens is a biconvex spherical lens. The sixth lens is a biconcave spherical lens and bonded to the fifth lens.