Abstract: An SLM includes a modulation unit and a driving circuit. The modulation unit includes a plurality of pixels, and modulates a phase or an intensity of incident light in each pixel according to an amplitude of a drive signal changing periodically with time. The driving circuit provides the drive signal to the modulation unit. The driving circuit performs control such that a phase of the drive signal V1(t) provided to a first pixel group in the plurality of pixels and a phase of the drive signal V2(t) provided to a second pixel group in the plurality of pixels are mutually inverted.

Abstract: A system includes: at least one processor; a movable stage, wherein the movable stage is movable under control of the at least one processor with respect to an eye of a subject; a video display device configured to move with the movable stage; and an optical system disposed in an optical path between the video display device and the eye. The video display device is configured to play a movie of a fixation target to the eye to cause the eye to accommodate, and the movie dynamically changes an appearance of the fixation target on the video display device to compensate for Bokeh of the fixation target as the movable stage moves the video display device from a first position, where the fixation target draws a focus of the eye to near its far point, to a second position further away from the eye than the first position.

Abstract: An optical device is provided. The optical device has a central region and a first-type region surrounding the central region. The first-type region includes a first sub-region and a second sub-region between the central region and the first sub-region. The optical device includes a substrate. The optical device also includes a meta-structure disposed on the substrate. The meta-structure includes first pillars in the first sub-region and second pillars in the second sub-region. In the cross-sectional view of the optical device along the radial direction of the optical device, two adjacent first pillars have a first pitch, two adjacent second pillars have a second pitch, and the second pitch is greater than the first pitch.

Abstract: An optical imaging lens sequentially includes, from an object side to an image side along an optical axis: a first lens (E1) with refractive power; a second lens (E2) with positive refractive power; a third lens (E3) with positive refractive power; a fourth lens (E4) with refractive power; a fifth lens (E5) with positive refractive power; a sixth lens (E6) with refractive power; and a seventh lens (E7) with refractive power. A total effective focal length f of the optical imaging lens and a curvature radius R4 of an image-side surface of the second lens meet 0.6<R4/f<1.5. TTL is a distance from an object-side surface of the first lens to an imaging surface of the optical imaging lens on the optical axis, and ImgH is a half of a diagonal length of an effective pixel region on the imaging surface of the optical imaging lens, TTL and ImgH meet 0.55<TTL/(ImgH×2)<0.75.

Abstract: An imaging lens assembly of an optical verification system with a FOV greater than 120 degrees, and includes optical lenses from an object side to an image side. The one of the optical lens being the closest to the object side includes: an object side surface and an image side surface of an optical zone; an object side surface of a non-optical-zone surrounding the object side surface of the optical zone; an image side surface of a non-optical zone surrounding the image side surface of the optical zone; and a first connection portion disposed between the image side surface of the optical-zone and the image side surface of the non-optical zone, wherein a first angle between a tangential direction of a surface of the first connection portion and the radial direction is in a range of 15 to 50 degrees.

Abstract: An isotope ratio mass spectrometer has an ion source, a static field mass filter, a reaction cell to induce a mass shift reaction, and a sector field mass analyser for spatially separating ions from the reaction cell according to their m/z. A detector platform detects a plurality of different ion species separated by the sector field mass analyser. The static field mass filter has a first Wien filter that deflects ions away from a longitudinal symmetry axis of the spectrometer in accordance with the ions' m/z, and a second Wien filter that deflects ions back towards the longitudinal symmetry axis in accordance with the ions' m/z. An inverting lens is positioned along the longitudinal axis between the Wien filters to invert the direction of deflection of the ions from the first Wien filter. The static field mass filter provides high transmission and improved spectrometer sensitivity. The first and second Wien filters permit simple tuning.

Abstract: A light control film, comprises a light input surface and alight output surface opposite the light input surface. Alternating transmissive regions and absorptive regions are disposed between the light input surface and the light output surface. The absorptive regions have an aspect ratio of at least 30 and the alternating transmissive region and absorptive regions have a relative transmission at a viewing angle of 0 degrees of at least 75%.

Abstract: An optical filter may include a substrate. The optical filter may include a first mirror and a second mirror. Each of the first mirror and the second mirror may include a plurality of quarterwave stacks. The plurality of quarterwave stacks may include a plurality of layers comprising a first material, a second material, and a third material. The optical filter may include a spacer disposed between the first mirror and the second mirror.

Abstract: Provided is a polarizing plate 1 having a wire grid structure, the polarizing plate 1 comprising: a transparent substrate 10; and grid protrusions 11 provided over the transparent substrate 10, arranged in an array having a pitch shorter than a wavelength of light in a band to be used, and extending in a predetermined direction, the grid protrusions 11 having a reflective layer 13, a dielectric layer 14, and an absorptive layer 15 that are disposed in this order in a direction away from the transparent substrate 10, and the reflective layer 13 having a maximum width b that is smaller than each of a maximum width of the dielectric layer and a maximum width of the absorptive layer (grid width a). This makes it possible to provide a polarizing plate capable of controlling the wavelength dispersion of absorption axis reflectance more accurately.

Abstract: A method for applying an optical mark to a spectacle lens mounted in a spectacle frame includes determining an intended position of the optical mark at the spectacle lens based on the spectacle frame. The method further includes taking an image of at least a part of the spectacle frame and arranging the spectacle frame in a marking device having a marking appliance and adjusting the relative position of the spectacle frame and the marking appliance such that an actuation axis of the marking appliance intersects with the spectacle lens at the intended position of the optical mark. Additionally, the optical mark to the spectacle lens is applied at the intended position by using the marking appliance. The use of a spectacle frame as a positioning reference for an optical mark and a marking device are also disclosed.

Abstract: A synchronous, tunable multi-optical filter system including two or more tunable optical filters, a shared diffraction grating, and a shared rotatable optical component, for example, a reflection prism, a mirror, etc., is provided. The shared diffraction grating, disposed in optical paths of both the tunable optical filters, disperses each collimated beam received therefrom into constituent wavelengths. By rotating the shared rotatable optical component disposed at a distance from the shared diffraction grating, using a rotation mechanism, the shared rotatable optical component communicates output beams having target wavelengths selected from the constituent wavelengths, to output elements of the tunable optical filters operating in individually configurable communication modes, for example, transmission and reflection modes.

Abstract: An optical unit for guiding a plurality of light beams, includes a plurality of lens portions through which the plurality of light beams are transmitted. The plurality of lens portions are arranged in an arrangement direction that intersects an optical axis direction along which the light beams are transmitted. Each of the lens portions is inclined with respect to a thickness direction intersecting the optical axis direction and the arrangement direction. The optical unit has both end faces in the optical axis direction with a pitch at which the lens portions are arranged in one end face being smaller than a pitch at which the lens portions are arranged in another end face.

Abstract: A space optical system is disclosed. The space optical system can include a primary support structure in support of a primary mirror. The space optical system can also include a sensor mounting structure coupled to the primary support structure and extending to an exterior of space optical system. The space optical system can further include first and second sensors mounted on the sensor mounting structure. In one aspect, the sensor mounting structure can comprise a thermally and mechanically stable, non-zero CTE material.

Abstract: An observation device according to the present invention includes an image display element displaying an image, and a finder optical system used for observing the image displayed on an image display surface of the image display element. The finder optical system includes a positive first lens, a negative second lens, and a biconvex positive third lens arranged in this order from the image display surface side to the observation side. A focal length of the second lens, a focal length of the finder optical system, a curvature radius of a lens surface of the second lens on the image display surface side, a curvature radius of a lens surface of the second lens on the observation side, a diagonal length of the image display surface, and a curvature radius of a lens surface of the third lens on the image display surface side are appropriately set.

Abstract: Optical systems including a reflective polarizer are described. The reflective polarizer includes first and second reflection zones, such that for light substantially normally incident on the reflective polarizer, the first zone substantially reflects light in a first wavelength range and substantially transmits light in a different non-overlapping second wavelength range, and the second zone substantially reflects light in the second wavelength range and substantially transmits light in the first wavelength range. The first and second reflection zones have first and second thicknesses having corresponding first and second mid-points separated by a distance d. In some embodiments, a longitudinal chromatic aberration of the optical imaging system of the first wavelength range to the second wavelength range caused when reducing d so that the first and second reflection zones are immediately adjacent is a distance h where 0.3h<d<0.7h.

Abstract: Provided is a depolarizing plate having a superior degree of depolarization to conventional depolarizing plates. The depolarizing plate includes a light-transmitting substrate having a surface layer portion in which a fine pattern is provided that includes a plurality of curved lines randomly disposed at a pitch of no greater than a wavelength of light, and that exhibits structural birefringence.

Abstract: A laser crystallization apparatus includes a plurality of laser generators which generate a plurality of laser beams, a plurality of attenuators which adjust energy intensity of the plurality of laser generators, and an optical module which overlap outputs of the plurality of attenuators to output a line beam. A first attenuator of the plurality of attenuators attenuates the energy intensity of the corresponding laser beam, and a second attenuator of the plurality of attenuators maintains the energy intensity of the corresponding laser beam.

Abstract: Provided is a camera optical lens including, sequentially from an object side to an image side: a first lens having a negative refractive power; a second lens; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens; a sixth lens having a positive refractive power; and a seventh lens having a negative refractive power. At least one of the first to seventh lenses comprises a free-form surface. The camera optical lens can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and three or more lens units. A distance between adjacent lens units varies during zooming. A predetermined condition is satisfied.

Abstract: A light source capable of operating third and fourth reflection mirrors included in a beam splitting device in conjunction with movements of first and second reflection mirrors included in a beam transfer device and an optical assembly, respectively. The third and fourth reflection mirrors are disposed on optical paths of a pre-pulse and a main pulse emitted from first and second pulse generators, respectively. The light source operates the third and fourth reflection mirrors to offset an excessive compensation of the main pulse caused in a process of compensating for an optical path error of the pre-pulse. The light source may be included in an extreme ultraviolet light source system.