Abstract: An ophthalmic device (1) of the present invention has an optical head (2) including a light projection optical system (21) that projects light onto a subject eye (E), a light reception optical system (22) that receives light from the subject eye (E), and a fixation lamp (23) for guiding a line-of-sight direction of the subject eye (E), and a turning drive unit that turns the optical head (2) in a horizontal direction while maintaining positional relationships between the light projection optical system (21), the light reception optical system (22), and the fixation lamp (23). The turning drive unit is composed of a rotational drive unit (4) that rotates the optical head (2) in the horizontal direction and a horizontal drive unit (3) that moves the optical head (2) in the horizontal direction.

Abstract: The present invention provides a biological body imaging system and an optical inspection device. The biological body imaging system includes a first lens set, a second lens set, a third lens set, and a fourth lens set that all have a positive focal power and are sequentially arranged from an object side along a same optical axis. The first lens set includes a second lens, the second lens set includes a fourth lens and a fifth lens, the third lens set includes a sixth lens, and the fourth lens set includes a seventh lens and an eighth lens. A combined focal length f1 of the first lens set and a conjugate distance T satisfy 0.15?f1/T?0.18, a combined focal length f4 of the fourth lens set and the combined focal length f1 of the first lens set satisfy 1.8?f4/f1?2.2, and a focal length f41 of the seventh lens and a focal length f42 of the eighth lens satisfy ?1?f42/f41??0.8. The present invention ensures clarity of the biological body image, especially during long-distance transmission.

Abstract: An embodiment of the present invention discloses a camera actuator including a housing, a mover on which a reflective member is disposed, a guide part disposed between the housing and the mover, and a driving part which drives the mover, wherein the guide part includes a support part, a first elastic part coupled to the support part and the mover, and a second elastic part coupled to the support part and the housing, the first elastic part tilts the mover with respect to a first axis, and the second elastic part tilts the mover with respect to a second axis perpendicular to the first axis.

Abstract: An actuator for cameras includes a carrier having a lens attached thereto and movable along an optical axis, a housing enclosing the carrier, at least one magnet mounted on the carrier and having k magnetic poles where k is a natural number equal to or larger than one, coils facing the magnet and disposed anterior or posterior along the optical axis, a Hall sensor assembly having m Hall sensors where m is a natural number equal to or larger than three, disposed along the optical axis, each of the m Hall sensors separated from one another by a first spacing, and an operational driver controlling the current applied to the coils in response to the signals from the Hall sensor assembly, in which the length of the magnetic pole is not less than the first spacing but not more than twice the first spacing.

Abstract: Laser radar include two part objective lenses that are used for imaging a target and directing probe beams to the target. Portions of tracer beams that degrade target images are attenuated with dichroic filters that block central portions of tracer beams. Local oscillator beams can be produced with a mixing lens that directs probe beams through a polarizing beam splitter to focus at or on a waveplate so that portions are reflected from the waveplate as local oscillator beams. An imaging system that is confocal with a probe beam is coupled to provide target measurements or to establish a focus of the probe beam.

Abstract: A sight includes a main body and an objective lens piece. The main body includes a connection end. A first electric connection assembly is arranged on an end surface of the connection end of the main body. A first connection member is arranged around the first electric connection assembly. A second electric connection assembly is arranged on one end surface of the objective lens piece. A second connection member is arranged around the second electric connection assembly. The second connection member is detachably connected in the first connection member to make the objective lens piece detachably connected to the main body. When the second connection member is connected in the first connection member, the second electric connection assembly is abutted to the first electric connection assembly to make the objective lens piece electrically connected to the main body.

Abstract: A head-up display system includes a laminated glass and a projection device. The laminated glass includes an outer glass sheet, a thermoplastic interlayer and an inner glass sheet. The laminated glass includes a first head-up display region and a second head-up display region. The projection device can generate first polarized light and second polarized light. At least about 70% of the first polarized light is p-polarized light, and at least about 70% of the second polarized light is p-polarized light.

Abstract: A double-sided composite spectacle lens and an inject mold therefor are provided. One surface of the spectacle lens is an aspherical surface, and the other surface is a designed aspherical surface used to inhibit astigmatism, and a spectacle lens formed by combining the two surfaces has two areas with different functions: optimizing optical performance, and thinning for aesthetics. By controlling the reduction of diopter and optimizing astigmatism on one surface, and inversely offsetting astigmatism on the other surface, the degree of astigmatism of the spectacle lens formed by combining the two surfaces is significantly lower than a diopter variation, and the degree of oblique astigmatism is significantly reduced. The aesthetic thinning effects of reducing the edge or center thickness of the double-sided composite spectacle lens are significantly enhanced by accelerating reduction of the diopter on one surface and changing from reducing to increasing the diopter on the other surface.

Abstract: The present invention relates to a driving structure for use in an optical actuator, including: a first driving part, which is suitable for mounting a lens and driving the lens to move transversely in the x-axis and y-axis directions; and a second driving part, which is suitable for driving a photosensitive chip to move transversely in the x-axis and y-axis directions, where the lens and the photosensitive chip are configured to be driven simultaneously and to move in opposite directions. Also provided in the present invention are a corresponding photographing method, an optically stabilizing photographing module, and a corresponding assembly method. The present application increases the stabilization travel and the stabilization response speed of the photographing module.

Abstract: Embodiments described include a head mounted display (HMD) including an ultrasound array configured to emit ultrasound signals to dynamically arrange micro-particles into a hologram. The hologram includes an image that is viewable when the micro-particles are illuminated by a light source. In some embodiments, the image included in the hologram is viewable from an eyebox region of a head mounted display.

Abstract: A display device and a display system are provided with an anti-glare layer (AG layer) between a liquid crystal display on which to display a video and an optical device that is disposed at a position through which image light emitted from the liquid crystal display passes, has a reflective polarizing plate, and is capable of controlling reflectance/transmittance of incident light. Since light reflected by a color filter of the liquid crystal display is out of phase due to scattering in the AG layer, the degree of interference is reduced, leading to reduction in the appearance of an iridescent image due to interference light. In addition, since external light scattered or diffused by the AG layer and the reflected light of the external light do not have a polarization characteristic, and thus, most of a component thereof toward the outside is reflected by the reflective polarizing plate, which reduces a situation in which a region around a bright reflected image appears cloudy.

Abstract: The present disclosure relates to the technical field of optical lens and discloses an optical system including, from an anterior side to a posterior side: an image surface, having a circular polarizer attached to a posterior side of the image surface to emit light; a first lens, provided with some reflective elements on an anterior-side surface and a lamination film on a posterior-side surface of the first lens, the lamination film comprising a reflective polarizing film and a quarter waveplate, and the reflective polarizing film provided at a posterior side of the quarter waveplate; and an aperture, located at the posterior side of the optical system; and the optical system further satisfying following conditions: VD?6 mm; SDmax?21.2 mm; and 0.71?d4/TTL?0.85. The optical system has good optical functions while satisfying a desire of design in a small size and a light weight.

Abstract: An integral optical stack including a structured optical film having alternating first and second segments including plurality of polymeric layers. Each pair of first and second segments define an inclusion angle of between about 50 degrees and about 110 degrees therebetween. Planarizing films are disposed on opposite first and second sides of the structured optical film. Each of the first and second sides has an average peak-to-valley nonlinearity. The planarizing films reduce the average peak-to-valley nonlinearity of the corresponding side of the structured optical film by at least a factor of 2. For each incident angle of between about zero and 30 degrees, the plurality of polymeric layers in each of the first and second segments has an average optical transmittance of greater than about 70% in a visible wavelength range and an optical reflectance of greater than about 60% for at least one wavelength in an infrared wavelength range.

Abstract: A vehicular exterior rearview mirror assembly includes a mounting arm and a mirror head. The mounting arm is received through an aperture in the mirror head, and an actuator is attached at the mounting arm within the mirror head. The actuator is operable to adjust the mirror head relative to the mounting arm and includes first and second motors that drive respective first and second gears. The first gear engages an arcuate gear disposed at an attachment element attached at the mirror head, and when the first motor is operated, the arcuate gear and the attachment element pivot relative to the actuator to adjust the mirror head about a first pivot axis. The second gear engages a rotationally fixed gear rotationally fixed to the mounting arm, and when the second motor is operated, the actuator travels about the second gear to adjust the mirror head about a second pivot axis.

Abstract: An optical apparatus includes: at least one optical component configured to reflect first light that travels in a first direction toward a second direction, transmit second light that travels in the second direction, and generate leaked light traveling in the first direction, the leaked light including a first component transmitted in the first direction in the first light and a second component reflected toward the first direction in the second light; a first processing unit configured to absorb the leaked light, and reflect the leaked light in a predetermined direction; and at least one second processing unit configured to absorb the leaked light coming from the first processing unit.

Abstract: An optical apparatus for examining a sample includes: an illumination unit for emitting illumination light in an illumination wavelength range onto the sample; a detection unit for collecting detection light in a detection wavelength range from the sample, the illumination wavelength range and the detection wavelength range partially overlapping in an intermediate wavelength range; and a light separating device for separating the illumination light and the detection light, the light separating device including a beam splitter having: a first splitting characteristic with one of transmitting and reflecting light of at least a first polarization state in the illumination wavelength range excluding the intermediate wavelength range; and a polarization-dependent second splitting characteristic with the one of transmitting and reflecting light of the first polarization state and the other of transmitting and reflecting light of a second polarization state in the intermediate wavelength range.

Abstract: An optical device is provided. The optical device includes a display apparatus including the same, and a method of extending an optical path. The optical device includes at least one electroactive optical cell configured to adjust a phase profile of light, and an optical path extender to extend an optical path by allowing light to transmit through the at least one electroactive optical cell in opposite directions a plurality of times.

Abstract: Described herein are antireflective materials and methods of making antireflective materials. The material can include a plurality of hierarchical nanostructures on abase substrate and a total specular reflection of less than 3% at a wavelength of about 400 nm to about 1100 nm. The material can have an etched polyimide layer disposed on the superior surface of the hierarchical nanostructures. The materials can also have superhydrophobic characteristics.

Abstract: An embodiment of this invention regards the production and projection of rainbow colors from sunlight or an alternative light source, and more particularly, the production and projection of a multicolored rainbow patch of light onto a chosen target, such as a ceiling or wall, an object, or any other target. A prism receives a lightstream either directly or by reflection from a mirror. The lightstream enters the prism at a specific angle and is refracted, emerging as a rainbow light. The rainbow light is directed towards the chosen target either directly from the prism or by reflection from a mirror.

Abstract: The present disclosure relates to a method and device for evaluating a fit of visual equipment. In an embodiment, the method (105) includes receiving (110) an image(s) of a face of a user, identifying (115) a subset of eyeglasses from a database that satisfy a preliminary fit threshold, determining (120) an eyeglass rim plane of a candidate eyeglass, determining (125) an eyeglass pads plane of the candidate eyeglass, generating (130) at least one 2D profile of a nose of the user, generating (140) at least one 2D profile of a nasal section of a frame of the candidate eyeglass, virtually docking (150) the candidate eyeglass on the nose of the face of the user, calculating (170), when the virtually docked candidate eyeglass satisfies a secondary fit threshold, a final fit of the virtually docked candidate eyeglass, the final fit being defined by at least one of a comfort criterion and/or an aesthetic criterion.