Abstract: The present invention relates to electrochromic devices and methods for functionalizing cellulose-based materials, in production and post-production stages, in order to obtain solid-state electrochromic devices. The invention is in the field of electrochemistry. These functionalized cellulose-based materials have typical electrochromic characteristics, specifically the capacity to change the oxidation state, leading to a modification of the physical properties, shown by a color change when exposed to an electric potential difference, being this color change reversible. The color remains in the absence of any electric stimulus, demonstrating a memory effect.

Abstract: An optical lens assembly with a filter member for image taking, sequentially arranged from an object side to an image side along an optical axis, comprises: a filter member and a lens assembly. The lens assembly is set at the object side of the filter member. The lens assembly comprises at least three lens elements with refractive powers, wherein at least two lens elements are made of plastic, and have at least one aspheric object-side surface or image-side surface. By such arrangements, the optical lens assembly with a filter member for image taking can have good chromatic aberration correction and reduce the total length for applications to electronic products such as cameras and mobile phones requiring high resolution.

Abstract: Disclosed herein is an imaging lens, including: a first lens having positive (+) power and being biconvex; a second lens having negative (?) power and being concave toward an image side; a third lens having positive (+) power and being biconvex; a fourth lens having positive (+) power and being convex toward the image side; and a fifth lens having negative (?) power and being concave toward the image side, wherein the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are sequentially disposed from an object side.

Abstract: A rotation of a first eccentric member adjusts a parallel eccentricity of an optical element held by a holding member, rotation of a second eccentric member adjusts a tilt eccentricity of the optical element held by a holding member, and change of a position of an engaging member and a position where the second eccentric member is engaged with a second groove portion adjusts a position of the optical element in the direction of an optical axis.

Abstract: An electrochromic layer structure with at least one active layer and at least two electrodes is described. At least one of the electrodes has an electrically conductive network of conductor tracks and the conductor tracks contain nanoparticles. An electrochromic device, a method for production of an electrochromic layer structure and use of an electrochromic layer structure and an electrochromic device are also described.

Abstract: An electrophoretic display device includes: an electrophoretic layer which is sandwiched between a first substrate and a second substrate, wherein a disposition area of the electrophoretic layer is constituted by a display area and a sacrifice display area which is provided to surround the display area, and at the second substrate, a printed area which is set outside the display area in a plan view and overlaps an outer peripheral portion of the sacrifice display area is provided.

Abstract: One optical system comprises a first optical surface, a faceted second optical surface, and a faceted third optical surface. The optical system is operative to convert a first bundle of rays that is continuous in phase space outside the first optical surface into a second bundle of rays that is continuous in phase space outside the third optical surface. Between the second and third optical surfaces the rays making up the first and second bundles form discrete sub-bundles each passing from a facet of the second optical surface to a facet of the third optical surface. The sub-bundles do not form a continuous bundle in a phase space that has dimensions representing the position and angle at which rays cross a surface transverse to the bundle of rays.

Abstract: An optical structure for generating nonreciprocal loss is provided that includes a first substrate layer and a magneto-optical layer positioned on the first substrate layer. The magneto-optical layer achieves nonreciprocity with application of an external magnetic field so as to produce resonantly enhanced nonreciprocal loss.

Abstract: Systems and methods are provided for modulating light of a wavelength of interest. The modulator assembly includes a plasmonic layer that supports surface plasmon polaritons at the wavelength of interest and a layer of solid-state phase change material having a first phase in which it is substantially transparent to light of the wavelength of interest and a second phase in which it is substantially opaque to light of the wavelength of interest. A control mechanism is configured to alter the phase of the solid-state phase change material between the first phase and the second phase. Each of the plasmonic layer and the layer of solid-state phase change material are configured as to provide a plasmonic mode of transmission for light of the wavelength of interest.

Abstract: A lens with a single detection member shared to perform focusing and zooming operations includes a base, a detection member, a focusing unit and a zooming unit. The focusing unit includes a focusing group frame and a focusing detection board. The zooming unit includes a zooming group frame and a zooming detection board. In a reset method, a signal read from the detection member is a light-passing signal or a light-shielding signal, the focusing group frame and the zooming group frame are in any position. With the focusing group frame of the focusing unit and the zooming group frame of the zooming unit, the any position of the focusing group frame and the zooming group frame can be determined, and then the focusing group frame and the zooming group frame are driven to reset as a predetermined standby position.

Abstract: A virtual image display includes at least an image forming device, a pair of accommodating members at least one of which accommodates the image forming device, a light guide member which guides image light received from the image forming device toward a predetermined outside position, and a pair of temples one and the other of which are rotatably attached to one and the other of the pair of the accommodating members, respectively. Each of either the accommodating members or the temples has a contact member which regulates rotation of the temple, and a position control member which shifts the corresponding contact member in a first direction extending nearer to or away from the corresponding accommodating member or temple on which the contact member is not provided.

Abstract: A five-piece optical lens system includes, in order from the object side to the image side: a first lens element with a positive refractive power having a convex object-side surface and at least one aspheric surface; a second lens element with a negative refractive power having a concave image-side surface and at least one aspheric surface; a third lens element with a positive refractive power having at least one aspheric surface; a fourth lens element with a positive refractive power having a concave object-side surface and a convex image-side surface, and at least one aspheric surface; a fifth lens element with a negative refractive power having a concave image-side surface and at least one aspheric surface. Thereby, such a system not only can be applied to a high resolution mobile phone, but also has a wide field of view, big stop, high pixel, high resolution and low height.

Abstract: The invention relates to transparent electrochromic systems which each include one pair of supply electrodes and at least one pair of polarization electrodes. The polarization electrodes prevent a reaction of mutual neutralization of the electroactive substances of the systems from causing unnecessary consumption of electric current. Said electrodes also prevent a neutralization reaction from limiting a lower value of light transmission of the systems. For this purpose, the polarization electrodes produce an electric field inside the systems, which attracts the electroactive substances that have already reacted with the supply electrodes to different areas.

Abstract: The invention relates to a method for characterizing a perception of blur by a subject (10) in order to determine a dioptric blur value for an image (C) observed by the subject. The image has a blur generated by the low-pass filtering of the image components in accordance with the respective space frequencies of said image components. An indication of the perception thereof of blur in the image is provided by the subject and is associated with the dioptric blur value. Several images associated with different dioptric blur values are used for defining a dioptric blur threshold value for the subject that corresponds to a blur perception criterion. The invention can be used for adjusting the design of a progressive lens for the subject in accordance with the sensitivity to said visual blur of said object.

Abstract: A process for controlling a lens manufacturing process comprising the steps of: a) manufacturing a master lens according to a manufacturing process using a manufacturing device, b) measuring by using at least a measuring device at least one parameter of the master lens of step a), c) recording the value of the parameter, d) repeating regularly step a) to c) and checking the evolution of the parameter over time, wherein the evolution of at least one parameter of the manufacturing device used during the lens manufacturing process is checked over time and the evolution over time of at least one parameter of the master lens is related with the evolution over time of the at least one parameter of the manufacturing device.

Abstract: A monofocal optical lens system 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 and a fifth 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 has refractive power, wherein at least one of the surfaces thereof is aspheric. The fourth lens element with negative refractive power is made of plastic material, and has a concave object-side surface and a convex image-side surface. The fifth lens element with refractive power is made of plastic material, and has a concave object-side surface, wherein the image-side surface thereof is convex or planar at the paraxial region and is convex at the peripheral region, and the surfaces of the fourth through fifth lens elements are aspheric.

Abstract: A meso-optic device (1) includes a substantially annular meso-optic body (100) including an axis of revolution (2), a divergent conic optical surface (112) substantially coaxial with the axis of revolution (2), with the divergent conic optical surface (112) configured to receive electromagnetic radiation propagating along an optical axis (3) from an impingent direction, wherein the optical axis (3) is coincident with or intersects the axis of revolution (2), and with the divergent conic optical surface (112) configured to divergently re-direct the electromagnetic radiation away from the axis of revolution (2), and a convergent conic optical surface (114) substantially coaxial with the axis of revolution (2), with the convergent conic optical surface (114) configured to receive the electromagnetic radiation divergently re-directed by the divergent conic optical surface (112) and with the convergent conic optical surface (114) configured to convergently re-direct the electromagnetic radiation toward the axis of

Abstract: A lens barrel includes a fixed cylinder, a first rotary cylinder rotatably provided around an axis relative to the fixed cylinder, and a moving cylinder disposed inside of the first rotary cylinder to move integrally with the first rotary cylinder on the axis and rotate around the axis relative to the first rotary cylinder. The moving cylinder includes a front protrusion group of three or more protrusions and a rear protrusion group of two or more protrusions on an outer circumference. The first rotary cylinder includes, in an inner circumference, a first circumferential groove, a second circumferential groove, a first guide having three or more depressions, and a second guide having two or more depressions. The first rotary cylinder and the moving cylinder are coupled with each other by fitting the front and rear protrusion groups into the first and second circumferential grooves, respectively.

Abstract: A gaze target determination device includes an event setting unit that generates, for each object at different times, a display event which triggers a movement of the gaze direction of the user who is gazing at the object and which indicates a movement or a change of the object; and a gaze trajectory calculation unit that calculates a gaze trajectory based on the detected user's gaze direction. An eye movement event detection unit detects an event detection time which is a time at which the gaze direction moves according to the display event, based on the calculated gaze trajectory. A synchronization structure analysis unit calculates, for each object, time difference between the event detection time and event occurrence time; and a gaze target determination unit determines the object at which the user is gazing from among the objects, based on the calculated time difference.

Abstract: An optical system includes a negative lens unit including one or more negative lenses located closest to an object side, and a positive lens unit having positive refractive power including a plurality of lenses on an image side of the negative lens unit. When the one or more negative lenses are denoted by negative lenses LNi (i=1, 2, . . . ) in order from the object side, and a portion of lenses among the plurality of the lenses constituting the positive lens unit is denoted by lenses LAj (j=1, 2, . . . ) in order from the object side, a focal length fni of the negative lens LNi, a refractive index Nni of a material thereof, a focal length fAj of the lens LAj, a refractive index NAj, and partial dispersion ratio ?gFAj of a material of the lens LAj are set to satisfy respective predetermined conditions.