Abstract: Various embodiments of the present invention provide for systems and apparatus directed toward using a contact lens and deflection optics to process display information and non-display information. In one embodiment of the invention, a display panel assembly is provided, comprising: a transparent substrate that permits light to pass through substantially undistorted; a reflector disposed on the transparent substrate; and a display panel aimed toward the reflector and substantially away from a human visual system, wherein the reflector reflects light emitted from the display panel toward the human visual system. The reflector may comprise a narrow band reflector or a polarization reflector.

Abstract: Aspects of the present invention relate to context based power management of a head-worn computer.

Abstract: Embodiments include a head-worn display including a display panel sized and positioned to produce a field of view to present digital content to an eye of a user, and a processor adapted to present the digital content to the display panel such that the digital content is only presented in a portion of the field of view, the portion being in the middle of the field of view such that horizontally opposing edges of the field of view are blank areas. The processor is adapted to shift the digital content into one of the blank areas to adjust the convergence distance of the digital content and thereby change the perceived distance from the user to the digital content.

Abstract: A wearable electronic device is provided. The wearable electronic device includes a frame, a body section connected with the frame, a display module mounted on the body section and configured to output an image, and a guide section configured to change a position of the display module in relation to the frame. The wearable electronic device may be variously implemented according to various embodiments.

Abstract: Visual display systems are described having means for generating stereoscopic images, a device for visual display of said stereoscopic images having a projector and a semitransparent screen; and a pair of stereoscopic spectacles. The projector according to the invention has an imager and an interference filter, the spectral transmission of which has at least one transmission band of determined width centred around a wavelength, said wavelength being dependent on the incidence of the light on said interference filter. The projector has means allowing the angular position of the filter to be varied between two determined positions so as to transmit, according to the position, either a first spectral band or a second spectral band. The pair of stereoscopic spectacles has a first lens transmitting the first spectral band and blocking the second spectral band and a second lens providing the opposite function.

Abstract: A protective case for a portable electronic device including a reading assistance lens assembly, and a case housing. The reading assistance lens assembly includes a housing having a front, back and side perimeter, and at least one lens associated with said housing. The case housing includes a frame, and an extension/retraction mechanism attached to the frame. The frame is configured to provide the reading assistance lens assembly to be extended and recessed within the protective case. The reading assistance lens assembly can be deployed by a sliding assembly, a biased hinge assembly, or a biased spring loaded assembly.

Abstract: Apparatus and method for producing a spatial depth effect of an image information item present in a 2D image surface. The apparatus has a viewing bezel having an opening, wherein the viewing bezel has a boundary delimiting a viewing field and the opening forms the viewing field. In addition, the apparatus has a 2D image surface which is arranged at a distance behind the viewing bezel. With appropriate use of the apparatus, as viewed from a viewing position, the viewing bezel conceals the external boundary of the 2D image surface and, if appropriate, a frame element connected radially outwardly to the external boundary. The distance between the boundary of the viewing bezel delimiting the viewing field and the 2D image surface arranged behind it, is at least approximately constant.

Abstract: The present invention provides an integrated imaging display apparatus and backlight module thereof. The integrated imaging display apparatus comprises a switchable backlight module and a liquid crystal display panel, wherein the switchable backlight module is switched at least between a first operation mode and a second operation mode, with the first operation mode being a dot matrix backlight formed by a dot light source matrix so that 3D display could be performed by the integrated imaging display apparatus, and the second operation mode being a surface backlight so that 2D display could be performed by the integrated imaging display apparatus. Through the solution mentioned above, the 2D/3D display switching can be accomplished by switching the operation modes of the backlight module in the present invention.

Abstract: Embodiments of the present disclosure provide a stereoscopic imaging apparatus and method, and a display. The stereoscopic imaging apparatus includes: a display panel, which includes multiple pixel units, and is configured to display images in a time division multiplexing scheme; and an electro-optic modulation layer, which includes multiple electro-optic modulation units respectively arranged at positions corresponding to the multiple pixel units, and is configured to alternately deflect light rays of the images displayed on the multiple pixel units into different projection directions under the effect of electric fields that change in a time division multiplexing scheme, where the electric fields that change in a time division multiplexing scheme change synchronously with the images displayed in a time division multiplexing scheme. The technical solutions of the embodiments of the present disclosure can improve resolution of auto-stereoscopic display.

Abstract: Systems and methods herein are directed to creating a holographic image (e.g., in line with Pepper's Ghost Illusion) using a low-profile bounce chamber. As described herein, a bounce is provided at an angle (e.g., a 45-degree angle) to a holographic screen/foil in a Pepper's Ghost Illusion setup. One the same side of the bounce is an image projector that directs an image onto a minor, which then reflects and disperses the image onto the bounce. In one embodiment, the bounce is a rear projection bounce, under which the projector and minor reside. In another embodiment, the projector and minor are arranged for a front projection bounce.

Abstract: A universal polarization converter is provided including a polarizer configured to receive unpolarized light. The polarizer is further configured to split the received unpolarized light into a first and second polarized state. At least two quarter wave phase retarders are configured to convert each of the first and second polarized states to opposite handed polarized beams. A cholesteric mirror is configured to combine the opposite handed polarized beams. In other embodiments, the cholesteric mirror may be replaced by a second polarizer and optional quarter wave retardation plate. Further embodiments may include a single polarization converter and multiple quarter wave retardation plates.

Abstract: A laser oscillation mechanism includes a pulse laser oscillator configured to oscillate a pulse laser beam, and a branching unit which branches the pulse laser beam oscillated by the pulse laser oscillator. The branching unit includes a diffraction optical element and a volume Bragg grating. The diffraction optical element branches the pulse laser beam oscillated by the pulse laser oscillator into a plurality of laser beams in an effective region. The volume Bragg grating refracts, from among the pulse laser beams branched by the diffraction optical element, a particular pulse laser beam to be excluded from the effective region to exclude the particular pulse laser beam.

Abstract: In an optical system composed of, in order from the object side, an objective optical system and a reflective surface optical system disposed along the optical axis of the objective optical system, a first reflective surface is turned around a turning axis passing through the intersection between the first reflective surface and the optical axis and is perpendicular to the plane that includes the optical axes before and after being bent by the first reflective surface. Further, the first reflective surface and the second reflective surface are turned synchronously around turning axes, each passing through the intersection between each corresponding reflective surface with the optical axis, being deviated from the normal to each corresponding reflective surface, and being arranged in parallel to each other, whereby an image formed by the objective optical system is shifted to move the image location of the objective optical system.

Abstract: The present invention provides some configurations of flexible connections jointly or integrally formed with a movable part and/or a fixed part of a lens module. The flexible connections may move the movable part along an optical axis direction and/or directions perpendicular to the optical axis. The configuration and material of the flexible connections provide an enhanced strength bearing plastic deformation, and hence increasing the structure strength of the lens module. The formation of the flexible connections with the movable part and/or the fixed part with one mold-injection process can reduce parts of the lens module and simply its manufacturing process.

Abstract: A contact lens system, including a peripheral conjunctival cover portion including a shell curved and sized to substantially overly a conjunctiva of an eye. The conjunctival cover portion defines a full thickness central opening therethrough. The central opening is positioned within the conjunctival cover and sized to expose at least a portion of a cornea of the eye. The contact lens system further includes a central contact lens portion that is substantially equivalent in size to the central opening and positioned or positionable at the central opening.

Abstract: There is provided a method of manufacturing an electrophoretic particle, in which the electrophoretic particle includes a mother particle and a block copolymer, including: a step of polymerizing a monomer M having a site contributing to dispersibility into a dispersion medium, a monomer M including a second functional group having reactivity with the first functional group, a charged monomer M by living polymerization without random copolymerizing the monomer M1 and the monomer M2 so as to obtain the block copolymer; and a step of reacting the first functional group and the second functional group to a bonding section to a mother particle so as to connect the block copolymer to the mother particle.

Abstract: A ring cavity device includes a passive ring waveguide and an input/output waveguide horizontally coupled to the passive ring waveguide, including an active waveguide structure vertically coupled to the passive ring waveguide and/or the input/output waveguide. The active waveguide structure compensates for the loss of the passive ring waveguide. A method for fabricating a ring cavity device is also included. The ring cavity device may obtain part of the gain by vertical coupling or mixed coupling (vertical coupling followed by horizontal coupling) thus to compensate the loss in the ring cavity device. Hence, the quality factor of the ring cavity device is improved.

Abstract: Provided is a liquid crystal display device that is narrow in viewing angle and that is capable of excellent image quality. The liquid crystal display device of the present invention includes: a liquid crystal panel; a prism sheet; a light guide plate; and a visible light absorber, which are provided in the stated order from a viewer side. The prism sheet has a convex portion on the opposite side from the viewer side. The visible light absorber has a luminous reflectance of 30% or less. In one embodiment, the liquid crystal display device of the present invention is free from a reflective polarizing plate. In one embodiment, the prism sheet includes a plurality of unit prisms, which are each shaped to have a triangular prism shape and which are arranged side by side.

Abstract: A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film.

Abstract: A display panel is provided. The display panel includes a first substrate having a display area and a non-display area. A sealant is disposed on the first substrate and on the non-display area. A planarization layer is disposed on the first substrate. The planarization layer has a first trench formed therein on the non-display area. The first trench has a bottom and a side adjacent to the bottom. The bottom has a roughness that is greater than the roughness of the side.

Abstract: A COA substrate is provided including a substrate base, a first metal layer, a first insulating layer, a semiconductor layer, a second metal layer, a color resist layer, and a pixel electrode layer. The surface of the color resist layer is provided with a protrusion and a recess, and the pixel electrode is disposed on the protrusion and the recess. A plurality of protrusions and a plurality of recesses are provided, thereby increasing the display quality of a liquid crystal display device.

Abstract: An image quality of a display device is improved. The display device includes: a display unit having a display functional layer; a cover member having a front surface and a back surface positioned on an opposite side of the front surface and covering the display unit; and a polarizing plate having a front surface so as to oppose the back surface of the cover member through a space spreading along the back surface of the cover member. Also, a reflection suppressing layer reducing reflected light which is visually recognized on the display surface side is formed on either one of the back surface of the cover member and the front surface of the polarizing plate.

Abstract: A display panel includes a first substrate, a second substrate and a display medium. At least one spacer is formed on the top surface of the first substrate and is disposed between the first substrate and the second substrate. An alignment film is formed on the first substrate and covers the spacer. The spacer has a first width and a second width in a direction perpendicular to a normal vector of the first substrate. The location of the second width is nearer to the first substrate than that of the first width. The second width is smaller than the first width. The alignment film has a first thickness at the location of the spacer having the first width and has a second thickness at the location of the spacer having the second width. The second thickness is greater than the first thickness.

Abstract: In the present liquid crystal display device, a conventional first auxiliary capacitance trunk line 430 is formed to be narrow, and a second auxiliary capacitance trunk line 440 is additionally provided and disposed at the closest position to the periphery of a substrate. Thus, a shift register can be distanced from the periphery of the substrate without increasing a frame area as a whole, so that the shift register is not overlaid with a seal material. Moreover, the extent of an area overlaid with a seal material within a wiring area for providing signals to the shift register can be reduced.

Abstract: Provided is a display device that includes, for example, a display panel to which a first polarizing plate and a second polarizing plate are attached to a lower surface and an upper surface thereof; a pad attached to an edge region of the upper surface of the display panel; an adhesive layer on upper surfaces of the display panel and the pad; and a functional panel attached to the upper surfaces of the display panel and the pad by an adhesive, wherein the upper surface of the pad is a sloped surface rising from a boundary with the second polarizing plate to an outer side.

Abstract: A display assembly includes a liquid crystal display (LCD) frame, a printed circuit board (PCB), and a front housing. The LCD frame includes at least one LCD frame obround boss. The PCB includes at least one PCB obround slot, where the PCB obround slot is sized to be larger in length and diameter than the at least one LCD frame obround boss. The LCD frame is secured to a printed circuit assembly. The front housing includes a display opening and an elastomeric bezel positioned on the front housing, where the elastomeric bezel is configured to position a liquid crystal display within the display opening.

Abstract: A liquid crystal display panel and a manufacturing method thereof are provided, which comprises a glass substrate provided with a color filter film or a dynamic flashing backlight module; a liquid crystal-polymer layer coated on the glass substrate; an upper polarizer and a lower polarizer respectively attached to the outer sides of the liquid crystal-polymer layer and the glass substrate. The liquid crystal display does not require the support of dual substrates, thereby improving transmittance, increasing light utilization, and being suitable for a device with an extremely rapid response, such as a device of field sequence display mode and so on.

Abstract: A display may be provided with a color filter layer. The display may have a thin-film transistor layer and a layer of liquid crystal material that is interposed between the color filter layer and the thin-film transistor layer. The color filter layer may include an array of color filter elements on a transparent substrate. The color filter elements may be formed from colored photoresist. An inorganic layer may be deposited on the color filter elements. An opaque matrix such a black matrix formed from black photoresist may be formed on the inorganic layer. The color photoresist color filter elements may be rectangular and may be arranged on the transparent substrate in a rectangular array. The black matrix may contain an array of rectangular openings. Each of the openings of the black matrix may be aligned with a corresponding one of the color filter elements.

Abstract: A liquid crystal display has a color filter layer and a thin-film transistor layer surrounding a layer of liquid crystal material. The display may have an active area with an array of display pixels. An inactive area may surround the active area. A black mask structure may be formed in the inactive area. A black matrix having a grid shape with rectangular openings may be formed in the active area. Red, green, and blue color filter elements may be formed in the rectangular openings. The black matrix may have a first layer that is formed from a grid of blue photoresist on a color filter substrate and a second layer that is formed from an aligned grid of black photoresist. In the inactive area, the black mask structure may be formed from a blue layer of photoresist covered with a black layer of photoresist.

Abstract: According to one embodiment, a reflective type liquid crystal display device provided can suppress light leakage into a thin film transistor due to entry of extraneous light. An array substrate includes a glass substrate, a plurality of thin film transistors, a plurality of pixel electrodes, and a metal film. The plurality of thin film transistors are provided to the glass substrate. The plurality of pixel electrodes are spaced apart from each other and driven by the thin film transistors. The plurality of pixel electrodes reflect extraneous light entering the reflective type display device from a counter substrate side. The metal film is provided between a gap between the pixel electrodes and each of the thin film transistors.

Abstract: The present invention discloses a color filter substrate, a liquid crystal display panel, and a display device so as to lower step differences between color-resists and light shielding strips on the color filter substrate to thereby avoid non-uniform rubbing or the color-resist layer being broken while an orientation layer is being rubbed for orientation from occurring due to the step differences, thus avoiding non-uniformity of brightness and hence improving a quality of display. The color film substrates includes a plurality of color-resists arranged spaced from each other, and light shielding strips arranged in gaps between every two adjacent color-resists, wherein the respective color-resists and the light shielding strips adjacent thereto overlap in respective overlap areas each including a plurality of teeth-shaped structures, and a distance between tops of two adjacent ones of the teeth-shaped structures is less than twenty times a thickness of the light shielding strip.

Abstract: An electronic device may have a display such as a liquid crystal display. A color filter layer may be formed on a display layer such as a transparent substrate layer. The color filter layer may include an array of color filter elements on a central portion of a surface of the transparent substrate layer. The color filter layer may include a peripheral color filter of a single color that at least partially surrounds the color filter elements on the central portion of the inner surface. In an inactive portion of the display, an opaque masking material may be formed over the peripheral color filter. In an active portion of the display the opaque masking material may form a grid that covers interfaces between adjacent color filter elements. The peripheral color filter may completely cover the surface of the substrate in the entire inactive portion of the display.

Abstract: A display panel includes a first substrate, a second substrate disposed opposite to the first substrate and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate includes a first wire grid pattern disposed on the first substrate extending in a first direction. The first wire grid pattern includes first recesses spaced apart from each other. The first substrate includes first metal wires disposed in the recesses.

Abstract: A liquid crystal display device, including; a liquid crystal panel; a polarizing plate attached to a surface of the liquid crystal panel; an adhesive sheet covering the polarizing plate, the adhesive sheet having a central region attached to the polarizing plate and a peripheral region attached to a peripheral surface of the liquid crystal panel, the peripheral region enclosing an entire circumference of an outer edge of the polarizing plate; and a transmissive member attached to the adhesive sheet.

Abstract: In a manufacturing method in which the bonding of polarizing plates is conducted after the cutting of bonded motherboards (motherboards bonded together) into a plurality of liquid crystal display panels, if the narrowing of frames progresses, a polarizing plate's edge can fail in fitting in the frame area and enter the display area. A manufacturing method of a display device includes: (a) bonding a first motherboard and a second motherboard together; (b) bonding a first polarizing plate to the first motherboard; (c) bonding a second polarizing plate to the second motherboard; and (d) dicing the first polarizing plate, the first motherboard, the second motherboard and the second polarizing plate all together.

Abstract: A curved display device comprises: a first substrate and a second substrate facing each other and having a curvature; a liquid crystal layer between the first and second substrates; a first polarizing layer between the liquid crystal layer and a first surface of the first substrate that faces the liquid crystal layer, or positioned to face a second surface of the first substrate opposite to the first surface of the first substrate; and a second polarizing layer between the liquid crystal layer and a first surface of the second substrate that faces the liquid crystal layer, or positioned to face a second surface of the second substrate opposite to the first surface of the second substrate; wherein at least one of the first and second polarizing layers is either between the first substrate and the liquid crystal layer or between the second substrate and the liquid crystal layer.

Abstract: A curved liquid crystal display is provided.

Abstract: A liquid crystal display (LCD) device comprises a first substrate; a second substrate facing the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate and comprising liquid crystal molecules; a first alignment layer disposed between the first substrate and the liquid crystal layer; and a second alignment layer disposed between the second substrate and the liquid crystal layer, wherein one of the first alignment layer and the second alignment layer comprises a photostable compound, or a photostable compound-derived functional group, or a photostable compound and a photostable compound-derived functional group, and the other does not comprise the photostable compound, or the photostable compound-derived functional group, or the photostable compound and the photostable compound-derived functional group.

Abstract: An LCD panel applied to a curved screen includes display sections and a black matrix layer. The black matrix layer is used for adjusting an area of the primary sub-pixel and an area of the secondary sub-pixel in each of display section, so that an area ratio of the secondary sub-pixel to the primary sub-pixel in the first display section equals to an area ratio of the secondary sub-pixel to the primary sub-pixel in the central display section, an area ratio of the secondary sub-pixel to the primary sub-pixel in the second display section is greater than that of the secondary sub-pixel to the primary sub-pixel in the first display section, an area of the primary sub-pixel in the central display section is lower than that of the primary sub-pixel in the first display section. Therefore, brightness and quality of the curved screen on image display are improved.

Abstract: A display panel is provided. The display panel includes a first sub-pixel row including a plurality of sub-pixels electrically connecting to a scan line; and a second sub-pixel row including a plurality of sub-pixels, wherein the scan line overlaps with an area of the sub-pixels of the second sub-pixel row, and the scan line overlaps with an edge of a first sub-pixel of the sub-pixels of the first sub-pixel row, wherein the edge is adjacent to a driving transistor of the first sub-pixel.

Abstract: An edge portion of first ground wiring and an edge portion of second ground wiring are in contact with a space containing air having a relative dielectric constant smaller than a liquid crystal relative dielectric constant through an insulating film. An edge portion of common wiring and another edge portion of the first ground wiring are in contact with a sealing material having a relative dielectric constant smaller than the liquid crystal relative dielectric constant through the insulating film.

Abstract: A liquid crystal display includes: a gate line extending in a first direction; a first data line and a second data line extending in a second direction; a thin film transistor (TFT) including a gate electrode connected to the gate line, a source electrode connected to the first data line, and a drain electrode; a vertical storage electrode line extending between the first and second data lines; a passivation layer disposed on the TFT and the vertical storage electrode line; an insulating layer disposed on the passivation layer; and a subpixel electrode disposed on the insulating layer, connected to the drain electrode, wherein the vertical storage electrode line includes an expansion, the insulating layer includes an opening exposing a portion of the passivation layer overlapping the expansion, and wherein the subpixel electrode includes a protrusion overlapping the expansion, a reinforced storage capacitor being formed between the protrusion and the expansion.

Abstract: In a display panel, a thin film transistor is connected to a gate line and a data line, and includes a gate electrode, a semiconductor pattern, a source electrode and a drain electrode. An organic pattern makes contact with a side surface of the data line and a side surface of the thin film transistor, and the organic pattern overlaps pixel areas of the display panel. A first passivation layer is on the data line, the thin film transistor and the organic pattern. A common electrode is on the first passivation layer, and the common electrode overlaps the pixel areas. A second passivation layer covers the common electrode. A pixel electrode is on the second passivation layer, the pixel electrode overlaps the common electrode, and the pixel electrode is electrically connected to the drain electrode through a first contact hole and the data line through a second contact hole.

Abstract: A liquid crystal display panel and a manufacturing method thereof are provided. The liquid crystal display panel includes a color resist layer, a planarization layer, and a pixel electrode layer. The color resist layer includes a first color resist unit and a second color resist unit, both of which are respectively disposed in two adjacent pixel units. The first color resist unit and the second color resist unit herein form a common boundary above the data line. The planarization layer is disposed on the color resist layer and utilized to planarize the common boundary. The pixel electrode layer which is disposed on the planarization layer includes a plurality of pixel electrode patterns corresponding to the pixel units, and borderlines of two adjacent pixel electrode patterns are located above the data line. The liquid crystal display panel of the present invention omits a black matrix for enhancing aperture ratio.

Abstract: The present invention discloses an array substrate, which includes a sub-pixel array, a number of data lines, and a number of scanning lines. The sub-pixel array is divided into a number of column groups along the distribution direction of the data lines, and is divided into a number of row groups along the distribution direction of the scanning lines. By designing the layout of the sub-pixels, the data lines and the scanning lines in the array substrate, there are alternately distributed sufficiently charged sub-pixels and insufficiently charged sub-pixels exist in a same column of sub-pixels when a dot inversion driving is used. Therefore, a LCD panel including the array substrate has even brightness uniformity, and the defect of vertical bright-dark lines is alleviated. The present invention also discloses a LCD panel including the above array substrate and a corresponding LCD.

Abstract: A provided is a liquid crystal display device for reducing power consumption by increasing efficiency of a backlight. The liquid crystal display includes, on a TFT substrate, a semiconductor layer and a gate electrode are laminated via a gate insulating film. A TFT is formed by the semiconductor layer and the gate electrode. A base film is formed of an insulating film and at a lower layer of the semiconductor layer. As seen in plan view, a reflection film is formed on a lower side of the base film at an area corresponding to the TFT. The reflection film is independently formed for each of the TFTs. Each of the reflection films is electrically floating. The reflection film has a reflectance of 70% or more at a lower side thereof. The use efficiency of the light from a backlight can be increased because of the existence of the reflection film.

Abstract: Electrophoretic displays with an electrophoretic medium having charged fluorescent microparticles are disclosed. The microparticles are charged linking molecules polymerized with fluorophores of various emissive wavelengths so that microparticles that emit a variety of colors may be produced. Methods for producing the microparticles and using the microparticles in an electrophoretic display are also disclosed. Such microparticles may be provided separately, or kits may be provided for producing the microparticles.

Abstract: Electrophoretic displays with an electrophoretic medium having charged fluorescent particles are disclosed. The charged fluorescent particles have a dendrimer core covalently bonded with fluorophores of various emissive wavelengths so that microparticles that emit a variety of different colored electromagnetic radiation may be produced. Methods for producing the microparticles and using the microparticles in an electrophoretic display are also disclosed. Such microparticles may be provided separately, or kits may be provided for producing the microparticles.

Abstract: Surfactants are provided that have a hydrophobic tail portion and a hydrophilic head portion. The hydrophilic head portion includes a terminal dialkyl-substituted tertiary amine or a terminal cycloalkyl-substituted tertiary amine. Also provided are pigment-based inks employing the surfactant, a combination of an electronic display and the pigment-based inks, and a process for reducing conductivity in primary amine-based surfactants and improving reliability of electronic inks employing such surfactants.

Abstract: The present invention involves a method of controlling at least one first element (22) for heating a multi-resonant optical device (10), automatically alternating between at least a first mode and a second mode, wherein, in the first mode, the first heating element is controlled by a first feedback loop (20) to lead the optical device to operate at a first resonance peak and wherein, at least during part of the second mode, the first feedback loop is made diverging to lead the optical device to operate at a second resonance peak.