Abstract: A simple and integrated imaging device for housing motor-switchable and laterally-moving filters between a camera-lens holder and an imaging chip comprises the switchable filters in a cavity and a switching mechanism, and a driving mechanism are also in the cavity. The imaging chip is carried by a flexible printed circuit board. The driving mechanism connected to the switching mechanism drives the switching mechanism to slide back and forth underneath the camera-lens holder, so that either the first or the second switchable filter covers a through hole allowing light to fall on the imaging chip. An electronic device including the imaging device is also disclosed.

Abstract: In various embodiments, pointing errors in a non-wavelength-beam-combining dimension of a laser system are at least partially alleviated via staircased collimation lenses.

Abstract: In one embodiment, a method receives a portion of a bundle of preview images for a video being played and starts to decode the portion of the bundle of preview images. An input is received for a location in the video. The method determines if a preview image corresponding to the location has been decoded from the bundle of preview images. When the preview image corresponding to the location has been decoded, the preview image corresponding to the location is displayed. When the preview image corresponding to the location has not been decoded, the method switches from decoding the portion of the bundle of preview images at a first position to decoding the portion of the bundle of preview images at a second position corresponding to the location.

Abstract: One embodiment is directed to a patient interface system for ophthalmic intervention on an eye of a patient, comprising: a housing; an optical lens coupled to the housing and having a focal axis; a eye surface engagement assembly coupled to the housing and comprising an inner seal having an inner seal diameter and being configured to circumferentially engage the eye, an outer seal having an outer seal diameter and being configured to circumferentially engage the eye, and a tissue migration bolster structure configured to be positioned circumferentially between the inner and outer circumferential seals and to prevent migration of tissue of the eye toward the eye surface engagement assembly when a vacuum load is applied within the assembly to cause vacuum engagement of the inner and outer seals against the eye.

Abstract: Systems and methods for rewinding a video to a point before the video was first viewed. Video transmitted by a media source is cached by a remote server. Upon a trick-play request for the video, the server generates a rewind, stream that includes the video that was transmitted by the media source before the user started to view the video. Upon receiving the rewind stream, the user's equipment may cache the rewind stream in a rewind buffer and rewind or play from the rewind buffer. The server may also generate and transmit a forward stream of the video that the media source has not yet transmitted. The user's equipment may cache the forward stream in a forward buffer. To perform trick-play operations with the video, the user's equipment may migrate the playback of the video to the rewind and forward buffers and rewind or fast-forward the video from the buffers.

Abstract: One embodiment is directed to a patient interface system for ophthalmic intervention on an eye of a patient, comprising: a housing; an optical lens coupled to the housing and having a focal axis; a eye surface engagement assembly coupled to the housing and comprising an inner seal having an inner seal diameter and being configured to circumferentially engage the eye, an outer seal having an outer seal diameter and being configured to circumferentially engage the eye, and a tissue migration bolster structure configured to be positioned circumferentially between the inner and outer circumferential seals and to prevent migration of tissue of the eye toward the eye surface engagement assembly when a vacuum load is applied within the assembly to cause vacuum engagement of the inner and outer seals against the eye.

Abstract: A wavelength converting element (101, 102, 103, 110) comprising a polymeric carrier material comprising a first wavelength converting material adapted to convert light of a first wavelength to light of a second wavelength, wherein the oxygen diffusion coefficient (D) of the polymeric carrier material is 8×10?13 cm2/s or less at 25° C. A prolonged lifetime of the wavelength converting material is achieved by selecting a polymeric carrier material with an oxygen diffusion coefficient (D) at 8×10?13 cm2/s or less at 25° C.

Abstract: The force of a piezoelectric element is efficiently transferred to an optical fiber without attenuation, so that the vibration of the optical fiber becomes large. Provided is an optical fiber scanner including an optical fiber which has an elongated cylindrical shape in which illumination light emitted from a light source is guided and can emerge from a distal end thereof and whose distal end can be vibrated in a direction intersecting the longitudinal direction thereof; and at least one piezoelectric element which have a plate shape polarized in a thickness direction thereof and which are separately bonded to an outer circumferential surface of the optical fiber closer to a base side than to a distal end thereof.

Abstract: A method for manufacturing a device (1) is suggested. The device comprises at least one opto-electronic module (1), and the method comprises creating a wafer stack (2) comprising a substrate wafer (PW), and an optics wafer (OW); wherein a multitude of active optical components (E) is mounted on the substrate wafer (PW), and the optics wafer (OW) comprises a multitude of passive optical components (L). Each of the opto-electronic modules (1) comprises at least one of the active optical components (E) and at least one of the passive optical components (L). The optics wafer (OW) can comprise at least one portion, referred to as blocking portion, which is at least substantially non-transparent for at least a specific wavelength range, and at least one other portion, referred to as transparent portion, which is at least substantially non-transparent for at least said specific wavelength range. 11.

Abstract: In one embodiment, a method sends a request for a bundle of preview images for a video to a server. The video is played and a portion of the bundle of preview images for the video is received. The method decodes the portion of the bundle of preview images before the entire bundle of preview images is received. Then, an input from a user for a location in the video is received and the method determines if a preview image corresponding to the location has been decoded from the bundle of preview images. When the image corresponding to the location has been decoded, the preview image corresponding to the location is displayed as a preview image.

Abstract: A user may interact with a control interface in the course of interacting with electronic content. The control interface may include any user interface utilized to adjust various aspects of an application, including, but not limited to, scroll bars, sliders, and/or navigation windows. Input at the control interface may be received from the user indicating that the user desires to manipulate the electronic content (e.g., jump to another location in a movie) or, alternatively, that the user wishes to manipulate the control interface. Upon determining that the input is intended to manipulate the control interface, the control interface may be adjusted to display a control interface view that provides finer or coarser granularity, allowing the user to interact with the control interface with more accuracy.

Abstract: In an aspect, an organic light-emitting display apparatus including: a substrate; at least one color filter formed on the substrate; an overcoat layer covering the at least one color filter; a first passivation layer formed on the overcoat layer; a light scattering layer formed on the first passivation layer; a first electrode formed on the light scattering layer; a second electrode facing the first electrode; and an organic layer located between the first and second electrodes is provided.

Abstract: In an aspect, an organic light-emitting display apparatus including: a substrate; at least one color filter formed on the substrate; an overcoat layer covering the at least one color filter; a first passivation layer formed on the overcoat layer; a light scattering layer formed on the first passivation layer; a first electrode formed on the light scattering layer; a second electrode facing the first electrode; and an organic layer located between the first and second electrodes is provided.

Abstract: A zoom lens including, from an object: a front group having negative power; and a rear group having positive power, the rear group including, from the object, a positive lens, a negative lens having a concave surface facing the object, a cemented positive lens constructed by a negative lens and a positive lens, and a cemented lens constructed by a positive lens and a negative lens, the rear group further including a focusing group disposed to the object side of the positive lens La for focusing from infinity to a close object by moving from the object side to an image side, a distance between the front group and the rear group being varied thereby zooming from a wide-angle end state to a telephoto end state, and given condition being satisfied, thereby providing a downsized zoom lens having wide angle of view and excellent optical performance with fewer lenses.

Abstract: A camera objective for a camera includes a mask having a plurality of masking sections which are permeable for radiation of a first spectral range and are impermeable for radiation of a second spectral range different from the first spectral range. A camera system includes a digital camera for taking images. The camera system includes such a camera objective and an optoelectronic sensor arrangement having a plurality of sensor elements for generating exposure-dependent received signals which form a respective image. The plurality of sensor elements includes a first group of sensor elements for generating received signals in dependence only on radiation of the first spectral range and a second group of sensor elements for generating received signals in dependence on radiation of the second spectral range.

Abstract: A photosensitive resin composition which can form a pattern attaining high resolution and having a high refractive index and a high transmittance is provided. The photosensitive resin composition includes a dispersion composition including (A) titanium dioxide particles having an average primary particle diameter of from 1 nm to 100 nm, (B) a graft copolymer that has a graft chain having a number of atoms other than hydrogen atoms in a range of from 40 to 10,000 and (C) a solvent, and (D) a polymerizable compound, and (E) a polymerization initiator.

Abstract: A device comprises at least one optics member (O) comprising at least one transparent portion (t) and at least one blocking portion (b). The at least one transparent portion (t) is made of one or more materials substantially transparent for light of at least a specific spectral range, referred to as transparent materials, and the at least one blocking portion (b) is made of one or more materials substantially non-transparent for light of the specific spectral range, referred to as non-transparent materials. The transparent portion (t) comprises at least one passive optical component (L). The at least one passive optical component (L) comprises a transparent element (6) having two opposing approximately flat surfaces substantially perpendicular to a vertical direction in a distance approximately equal to a thickness of the at least one blocking portion (b) measured along the vertical direction, and, attached to the transparent element (6), at least one optical structure (5).

Abstract: The present invention relates to ophthalmic and non-ophthalmic systems with blue light filtering and Yellowness Index ranges. UV and IR filtering are also included. Industrial applications are also outlined in the invention.

Abstract: In a synthetic resin lens, a thermoplastic resin is caused to contain a blue pigment having the lowest value for light transmittance in 570-610 nm, and a pink pigment that, among blue light of 380-500 nm, has the highest value for light transmittance in 400-440 nm and the lowest value for light transmittance in 480-520 nm, resulting in a transparent achromatic lens having a lowest value for light transmittance in 570-610 nm. As a result, provided is a synthetic resin lens that, when used in sunglasses, corrective glasses, shields, or the like, has favorable contrast (visibility), few marked color changes when installed, and a natural color.

Abstract: An antireflection film, including an optical element, formed on an optical surface of an optical member and preventing reflection of a light beam incident on the optical surface. It has a maximum reflectance P1 in a first wavelength region and a maximum reflectance P2 in a second wavelength region at a wavelength side longer than the first wavelength region, and satisfies a relation of P1>P2, as a spectral reflectance property when a light beam is incident on the optical surface at a 0 degree incident angle. It also shifts a wavelength range where the reflectance is a specific value or less, to a wavelength longer than the second wavelength region, the reflectance in the second wavelength region decreases, and the reflectance in the first wavelength region increases so that a luminance difference is small between a ghost in the first wavelength region and the second wavelength region.

Abstract: A dichroic filter that for use with an electronic imaging device, such as a camera. The dichroic filter is located in the main imaging lens, and may permit all light to pass through a first portion and be measured by a photosensor, while restricting at least some portions of visible light from passing through a second portion thereof. In this manner, only the non-restricted portions of visible light passing through the second portion may be measured by the associated pixels of the photosensor. The filter may be formed from a first aperture permitting a first set of wavelengths to pass therethrough and a second aperture adjacent the first aperture, the second aperture permitting only a subset of the first set of wavelengths to pass therethrough. The second aperture may be a dichroic mirror or it may be an optical filter of some other type.

Abstract: A color contrast enhancing sunglass lens includes a lens body and a multi-layer coating disposed on the lens body. The multi-layer coating includes a set of alternating layers formed of materials having different refractive indices and confines the transmission of visible light to a predetermined spectral profile having at least three high transmission bands that include blue, green and red bands and that have a maximum of spectral transmittance no less than 60%, three low transmission bands that include purple, cyan and yellow bands and that have a minimum of spectral transmittance no greater than 40%, and no spectral transmittance being less than 15% between 475 and 650 nm. The color contrast enhancing sunglass lens as disclosed meets the ANSI specification Z80.3-2009 section 4.6.3.3.

Abstract: This disclosure provides an image capturing lens system, in order from an object side to an image side comprising: a first lens element with positive refractive power having a convex object-side surface and a concave image-side surface; a second lens element with positive refractive power; a third lens element with positive refractive power; and a fourth lens element with positive refractive power having a convex object-side surface, a concave at a paraxial region and convex at a peripheral region image-side surface, and both of the object-side and image-side surfaces thereof being aspheric; wherein the lens elements of the image capturing lens system with refractive power are the first lens element, the second lens element, the third lens element and the fourth lens element.

Abstract: A camera objective for a camera includes a mask having a plurality of masking sections which are permeable for radiation of a first spectral range and are impermeable for radiation of a second spectral range different from the first spectral range. A camera system includes a digital camera for taking images. The camera system includes such a camera objective and an optoelectronic sensor arrangement having a plurality of sensor elements for generating exposure-dependent received signals which form a respective image. The plurality of sensor elements includes a first group of sensor elements for generating received signals in dependence only on radiation of the first spectral range and a second group of sensor elements for generating received signals in dependence on radiation of the second spectral range.

Abstract: Provided is an optical system with an excellent anti-reflection effect and ghost suppression effect including an aspherical lens having at least one of an incident surface and an exiting surface of an optical glass formed of an aspherical surface, in which: the aspherical surface includes an anti-reflection structure formed thereon, the anti-reflection structure having an anti-reflection function and including multiple inorganic structural parts finer than a used wavelength; and the aspherical surface has a point that satisfies the following expression: |(1/Rm?1/Rs)/Rm|>5.0×10?5, where Rm denotes a radius of curvature in a meridional direction at an arbitrary point, and Rs denotes a radius of curvature in a sagittal direction at the arbitrary point.

Abstract: An optical scanner, scanner apparatus, or scanner assembly, which may be particularly advantageous for use in a multiphoton microscope, includes a first drivable bending component, a second drivable bending component mounted perpendicularly to the first component, and at least one optical waveguide coupled one or both of the first and second bending components, wherein the at least one optical waveguide provides both a propagation path for a multiphoton excitation radiation delivery between a light source and a target and a multiphoton-induced emission radiation delivery between the target and a detector. A GRIN relay lens. A multiphoton microscope incorporating the scanner and the GRIN relay lens.

Abstract: A camera objective for a camera includes a mask having a plurality of masking sections which are permeable for radiation of a first spectral range and are impermeable for radiation of a second spectral range different from the first spectral range. A camera system includes a digital camera for taking images. The camera system includes such a camera objective and an optoelectronic sensor arrangement having a plurality of sensor elements for generating exposure-dependent received signals which form a respective image. The plurality of sensor elements includes a first group of sensor elements for generating received signals in dependence only on radiation of the first spectral range and a second group of sensor elements for generating received signals in dependence on radiation of the second spectral range.

Abstract: A magnification device including a housing having a distal open end and a proximal open end is disclosed. The housing includes an optical system including one or more objective lenses adjacent the distal open end, and one or more eye lenses adjacent the proximal open end, the optical system produced a desired level of magnification; and a filtering system having first filter selectively filtering a first group of wavelengths and a second filter selective filtering a second group of wavelengths. The first and second filters having an optical density selected based on a magnification level of the optical system. A vision enhancing assembly including a carrier device and one or more magnification devices coupled to the carrier device is also disclosed, wherein the magnification devices include filters that have optical densities based on a magnification level.

Abstract: The present invention provides a curable, organic polymeric photochromic composition comprising: a photochromic amount of at least one photochromic material; a polymeric polyol having carbonate groups along its backbone and having a number average molecular weight greater than 5000 g/mole; and a curing agent having reactive functional groups capable of reacting with hydroxyl groups on the polymeric polyol. After curing and after the Photochromic Performance Test the composition demonstrates a T1/2 fade rate of less than 200 seconds. Also provided is a photochromic article comprising a rigid substrate and a photochromic organic polymeric coating applied to a surface of the substrate. The photochromic organic polymeric coating comprises the composition described above.

Abstract: Embodiments of the invention include an optical system and an optical system module, coupled to a distal end of a fluorescence emission endoscope apparatus, an optical waveguide-based fluorescence emission endoscopy system, and a method for remotely-controlled, multi-magnification imaging of a target or fluorescence emission collection from a target with a fluorescence emission endoscope apparatus. An exemplary system includes an objective lens disposed in a distal end of an endoscope apparatus. The lens is adapted to transmit both a visible target illumination and a fluorescence-emission-inducing target illumination as well as fluorescence-emission and visible light from the target. The system can thus simultaneously provide low magnification, large field of view imaging and high magnification, high-resolution multiphoton imaging with a single lens system.

Abstract: The general field of the invention is that of devices for focusing light to subwavelength dimensions including at least one focusing structure having a metal film provided with a first aperture that penetrates the film, the aperture having dimensions an order of magnitude smaller than the working wavelength of the focusing device. In the devices according to the invention, the focusing structure has at least one optical cavity placed around the aperture so that, when the structure is illuminated with a radiant flux at the working wavelength of the device, a large part of this flux is concentrated on the aperture by said cavity. Several embodiments are described using various cavities that may comprise plasmon reflectors.

Abstract: An object is disposed such that the apparatus is between the object and an observer. The appearance of the object is altered and, in the limit, the object cannot be observed, and the background appears unobstructed. The apparatus is formed of a metamaterial where the properties of the metamaterial are varied as a function of distance from the interfaces. The metamaterial may be fabricated as a composite material having a dielectric component and inclusions of particles of sub-wavelength size, and may also include a gain medium.

Abstract: In a minimally invasive surgical system, a camera includes a prismatic element having a lens within the prismatic element. The lens corrects the resulting image focus for the non-visible light to make it substantially the same as the focus for the visible light. Alternatively, the lens corrects the resulting image focus for the visible light to make it substantially the same as the focus for the non-visible light.

Abstract: A system and method for method applying a laminate to a lens. The laminate may be opaque, translucent or perforated. The laminate may cover a more than one side of the lens. The laminate may have an indicia thereon to show support for a country or team. The gap may be formed between the laminate and the edge of the lens. The laminate may be layered one on top of another. The method claimed is selecting a laminate with the desired properties i.e. magnifying lens, colored lens, lens with appropriate indicia, applying that laminate to a lens.

Abstract: A junction type compound lens using glass and resin is used. By properly controlling the difference between refractive indices and the difference between Abbe numbers of the resin and glass, interface reflection that occurs when a ray with a large incidence angle is incident is restricted, and generation of a flare or a ghost image is restricted. Further, by properly controlling the difference in refractive index and the difference in Abbe number, various aberrations, such as spherical aberration, field curvature, and chromatic aberration, which may deteriorate optical performance, can be corrected. Thus, a small and high-performance imaging lens can be provided.

Abstract: A device comprises at least one optics member (O) comprising at least one transparent portion (t) and at least one blocking portion (b). The at least one transparent portion (t) is made of one or more materials substantially transparent for light of at least a specific spectral range, referred to as transparent materials, and the at least one blocking portion (b) is made of one or more materials substantially non-transparent for light of the specific spectral range, referred to as non-transparent materials. The transparent portion (t) comprises at least one passive optical component (L). The at least one passive optical component (L) comprises a transparent element (6) having two opposing approximately flat surfaces substantially perpendicular to a vertical direction in a distance approximately equal to a thickness of the at least one blocking portion (b) measured along the vertical direction, and, attached to the transparent element (6), at least one optical structure (5).

Abstract: A composite ophthalmic device comprising an ophthalmic structure, means or lens having a photo-shifting material deployed thereon or therewithin so as to up-shift or down-shift the amplitude, wavelength (or both) of incident radiation into the visible wavelength range.

Abstract: A magnification device including: a housing including a distal open end and a proximal open end; an optical system including one or more objective lenses mounted in the housing adjacent the distal open end, and one or more eye lenses mounted in the housing adjacent the proximal open end; and a filtering system suitable for attenuating selected wavelengths from the transmission of electromagnetic radiation including a first filter lens mounted to the distal open end of the housing adjacent the one or more objective lenses, and a second filter lens mounted to the proximal open end adjacent the one or more eye lenses, the first filter lens closing the distal open end of said housing is provided. A vision enhancing assembly including a carrier device and one or more magnification devices coupled to the carrier device is also provided.

Abstract: A light-shielding curable composition is provided which exhibits excellent dispersion property, excellent storage stability, and excellent pattern edge formability, and a wafer level lens and a light-shielding color filter which have a light-shielding section produced using the curable composition are provided. The light-shielding curable composition includes (A) an inorganic pigment; (B) a dispersant having a polyester structure; (C) a polymerizable compound having a polyester structure; (D) a polymerization initiator; and (E) a solvent.

Abstract: The present invention provides a curable, organic polymeric photochromic composition comprising: a photochromic amount of at least one photochromic material; a polymeric polyol having carbonate groups along its backbone and having a number average molecular weight greater than 5000 g/mole; and a curing agent having reactive functional groups capable of reacting with hydroxyl groups on the polymeric polyol. After curing and after the Photochromic Performance Test the composition demonstrates a T1/2 fade rate of less than 200 seconds. Also provided is a photochromic article comprising a rigid substrate and a photochromic organic polymeric coating applied to a surface of the substrate. The photochromic organic polymeric coating comprises the composition described above.

Abstract: The invention is a polarized sunglass lens that comprises a multiband contrast enhancer to provide relatively high light transmittance for portions of the red, green, and blue spectra, while blocking UV and visible violet wavelengths, and optionally blocking deep-red wavelengths, in a single lens layer which when positioned as the front lens layer also protects the internal lens layers from UV-induced degradation. The multiband contrast enhancer comprises a combination of a copper halide or copper indium compound with rare-earth oxides in a heat-treated glass composition, or a combination of narrowband and sharp-cut absorbing dyes in a plastic composition, and provides attenuation of the UV and violet spectrum, thus protecting the user's eyes and the internal layers and colorants from UV-induced damage while providing enhanced optical contrast, color saturation, and visual acuity for the wearer.

Abstract: An optical element that has a fine textured structure formed on an exit surface thereof. The fine textured structure satisfies the following conditions: ?min/1.71nsub<p<?min/2 and 0.6?min<h<1.5?min, where ?min is the shortest wavelength used in the optical element, nsub is the refractive index of a substrate on which the fine textured structure is formed, p is the pitch of the fine textured structure, and h is the height of the fine textured structure. The textured structure includes a part where some rays incident parallel to the optical axis are totally reflected.

Abstract: There is provided an imaging lens including: a transparent substrate; an upper lens disposed on a top of the transparent substrate; and a lower lens disposed on a bottom of the transparent substrate to correspond to the upper lens, wherein one of the upper and lower lenses includes a lens element and a partition wall formed higher than the lens element to surround the lens element. Also, there is provided a method of manufacturing the same. In the imaging lens, the partition wall is replicated together with the lens element on one or both surfaces of the transparent substrate. The partition wall is formed higher than the lens element and has a flat top surface. Therefore, when another lens element is replicated on an opposite surface of the transparent substrate, the previously replicated lens element is prevented from deformation.

Abstract: A variety of applications of the integration of lenses and lens arrays into clothing, eyewear, and other worn articles so as to enhance or alter the appearance of a wearer are disclosed.

Abstract: The present invention relates to ophthalmic and non-ophthalmic systems with blue light filtering and Yellowness Index ranges. UV and IR filtering are also included. Industrial applications are also outlined in the invention.

Abstract: In a minimally invasive surgical system, a camera includes a prismatic element having a lens within the prismatic element. The lens corrects the resulting image focus for the non-visible light to make it substantially the same as the focus for the visible light. Alternatively, the lens corrects the resulting image focus for the visible light to make it substantially the same as the focus for the non-visible light.

Abstract: A camera objective for a camera includes a mask having a plurality of masking sections which are permeable for radiation of a first spectral range and are impermeable for radiation of a second spectral range different from the first spectral range. A camera system includes a digital camera for taking images. The camera system includes such a camera objective and an optoelectronic sensor arrangement having a plurality of sensor elements for generating exposure-dependent received signals which form a respective image. The plurality of sensor elements includes a first group of sensor elements for generating received signals in dependence only on radiation of the first spectral range and a second group of sensor elements for generating received signals in dependence on radiation of the second spectral range.

Abstract: Disclosed are an LED light converting resin composition, and an LED member using the same. The LED light converting resin composition comprises 20˜99 wt % of transparent resin, 0.8˜60 wt % of a lighting color converting fluorescent substance, and 0.2˜20 wt % of a light diffusing bead with an average particle diameter of 0.2˜30 ?m. It is possible to emit a white or yellowish white light, like a conventional white light LED, only by independently using a white light emitting LED lens with no change in a blue, violet, or UV LED. There is no need to use a white LED which is relatively expensive and has a short life. Instead, as required, it is possible to easily replace a conventional LED lens with the disclosed LED lens by a user or an operator, thereby obtaining a mild white light with a required luminance. Thus, glaring, caused by a high-luminance white LED lighting, can be effectively reduced, thereby providing a milder lighting with improved comfort.

Abstract: An extended depth of field is achieved by a computational imaging system that combines a multifocal imaging subsystem for producing a purposefully blurred intermediate image with a digital processing subsystem for producing a recovered image having an extended depth of field. The multifocal imaging system preferably exhibits spherical aberration as the dominant feature of the purposeful blur. A central obscuration of the multifocal imaging subsystem renders point-spread functions of object points more uniform over a range of object distances. An iterative digital deconvolution algorithm for converting the intermediate image into the recovered image contains a metric parameter that speeds convergence, avoids stagnations, and enhances image quality.

Abstract: An optical lens system that focuses both a first band of wavelengths and a second band of wavelengths onto a common focal plane. In some cases, the lens system includes a first region for focusing a first band of wavelengths onto a focal plane, and a second region for focusing a second band of wavelengths onto the same focal plane. Depending on the wavelengths and materials involved, the first region may or may not focus the second band of wavelengths onto the focal plane, and in some cases, may or may not even transmit the second band of wavelengths to the focal plane. Likewise, the second region may or may not focus the first band of wavelengths onto the focal plane, and in some cases, may or may not even transmit the first band of wavelengths onto the focal plane, but this is not required. In some embodiments, an additional lens may be provided between the lens system and the common focal plane to help focus the first band of wavelengths and the second band of wavelengths onto the common focal plane.