Abstract: An LED light source is formed of an LED and an angle control lens. The angle control lens includes a transparent member in a shape of a rotational symmetry, and includes a center convex curved surface area (light-emission area) A1, a peripheral curved surface area (light-emission area) B1, a peripheral curved surface reflection area C1, a center concave curved surface area (light-incidence area) D, and a convex curved surface area E formed between the areas A1, B1. The convex curved surface area E is formed in a position for receiving direct incoming light from the LED (direct incoming light deviated from the center portion), and is optically constructed to anteriorly emit this received light (in a direction intended to be emitted as a result of a light-emission angle being controlled).

Abstract: Optical devices for guiding illumination are provided each having a body of optical material with staircase or acutely angled ramp structures on its top surface for distributing light inputted from one end of the device from the front exit faces of such structures along certain angular orientations, while at least a substantial portion of the light is totally internally reflected within the body until distributed from such front exit faces. Optical devices are also provided each have a body of optical material having a bottom surface with acutely angled ramp structures and falling structures which alternate with each other, such that light is totally internally reflected within the device until reflected by such ramp structures along the bottom surface to exit the top surface of the device or transmitted through the ramp structures to an adjacent falling structure back into the device.

Abstract: An illuminating device includes a housing, a light source module, and a plurality of replaceable optical elements. The light source module is positioned in the housing for emitting light having an initial illumination range. The optical elements are configured for respectively converting the initial illumination range into different outputting illumination ranges, each of the optical elements is selectively detachably mountable to the housing for achieving a desired illumination range.

Abstract: A projector having a first lens array with a plurality of first lenses in a plane substantially orthogonal to an optical axis of the light beam from a light source that divides the light beam into a plurality of partial light beams, a second lens array having a plurality of second lenses corresponding to the plurality of first lenses, and a polarization converter that is disposed on a light beam emitting-side of the first lens array. A focal position in a first direction of the first lens is set in the vicinity of the second lens array in the optical direction of the light beam irradiated from the first lens. A focal position in the second direction of the first lens is set in the vicinity of the polarization converter in the optical direction of the light beam irradiated from the first lens.

Abstract: A micro-optical device includes a plurality of minute optical elements each having a curved surface operable to condense incident light. The minute optical elements are arranged at constant intervals. The curved surface is expressed by two or more F values. Each of the minute optical elements is a transmission lens element having the curved surface including a substantially flat part at a center of the transmission lens element, wherein the curved surface is convex or concave.

Abstract: A system of optics used to provide illumination through an objective at a precise inclination angle and with uniform intensity across an illuminated field. The system provides annular illumination with a continuously variable diameter at the back aperture of an objective. The resultant illumination field at the imaging plane of the objective includes rays with a single inclination angle with respect to the optical axis of the objective. This incidence angle is determined by the position of an axicon lens. The imaging plane is illuminated from 360 degrees rotation about optical axis of the objective.

Abstract: Described and illustrated are, among other things, a prismatic lens (10) for a light fixture (25), comprising a light-entry side (11) and a light-exit side (12), and comprising a plurality of prisms (16, 16a, 16b, 16c, 16d, 16e, 16f, 16g, 17, 17a, 17b, 17c, 17d, 17e, 17f, 17g) arrayed in a structured manner and used for directing light along a preferred direction (V). The invention is characterized in that at least partial regions (24, PF2) of the light-exit side (12) have a light-diffusing design.

Abstract: A reflection type illumination optical apparatus, which guides an exposure light to a reticle surface via a curved mirror, a concave mirror, etc. includes a vacuum chamber which accommodates the curved mirror, the concave mirror, etc; and a subchamber which is arranged in the vacuum chamber and which accommodates the curved mirror. The subchamber has openings through which the exposure light coming into the curved mirror and the exposure light exiting from the curved mirror pass, respectively. Each of the openings is arranged in the vicinity of a position at which the cross-sectional area of the light flux is smallest. It is possible to decrease the amount of adhesion of minute particles such as debris to the reflecting optical element, without unnecessarily enhancing the ability of the vacuum gas discharge mechanism.

Abstract: A color changer, particularly for spotlights, comprising at least one dichroic filter which is adapted to be arranged in front of a light source, a motor for moving the at least one dichroic filter which is adapted to place the dichroic filter at least partially in front of the light source, the color changer further comprising an actuator which is adapted to tilt the dichroic filter with respect to the axis of emission of the light source.

Abstract: A device for homogenizing light has at least two cylindrical lens arrays which are placed one behind the other in a direction of diffusion of the light to be homogenized and which each have convex and concave cylindrical lenses disposed next to one another in an alternating manner, the cylinder axes of these cylindrical lenses are aligned parallel to one another. In the direction, in which the cylindrical lenses are disposed next to one another, the concave cylindrical lenses of the first cylindrical lens array have a shaping, in particular, an extension or curvature different from that of the concave cylindrical lenses of the second cylindrical lens arrays.

Abstract: A surface emitting light source and projection display device using the same are disclosed, by which a highly integrated and/or high-output surface emitting light source are provided in a manner that improves the structure of semiconductor light emitting units. The present invention includes a plurality of semiconductor light emitting units arranged on a single plane, the semiconductor light emitting units emitting lights of at least two different colors, wherein the emitted lights are made to proceed externally within a predetermined angle.

Abstract: Aspects of the invention can provide a projector that can include a light source unit, an optical modulation element that modulates light from the light source unit on the basis of image data, a light adjusting unit that adjusts the amount of light incident on the light modulation element from the light source unit, and a control unit that controls the light modulation element and the light adjusting unit. The control unit can perform light adjustment control to adjust the amount of light according to a luminance distribution pattern of image data for the light adjusting unit and can perform correction control to correct display irregularity of image data based on the adjustment of the amount of light for the light modulation element.

Abstract: An image-displaying apparatus comprising a light-emitting diode, a relay lens, a secondary light source-forming prism arranged between the light-emitting lens and the relay lens, and a light valve, said secondary light source-forming prism having opposed first and second opposed rectangular planes and at least four polygonal planes, said first and second rectangular planes being positioned on sides of the light-emitting diode and the light valve, respectively, and an area of the first rectangular plane being greater than that of the second rectangular plane, wherein a light emitted from the light-emitting diode is illuminated upon the light valve through the relay lens and the secondary light source-forming prism.

Abstract: In one embodiment, an exemplary light source assembly includes a light source device, a optical component, and a light pervious filling layer interposed between the light source and the optical component. The light source includes a light pervious cover. The light pervious filling layer can reduce a refraction loss and reflection loss of light.

Abstract: A light source unit includes a light source made up of a reflector having a lamp accommodating opening and a light exiting opening, and a lamp having a bulb for emitting light and electrode introducing portions which guide electrodes into the bulb. In addition, the light source unit includes an anomalous lens which is disposed to collect light emitted from the light source to be situated on an optical axis of the light emitted from the light source, and a condenser lens for collecting light which has exited from the anomalous lens. The lamp is inserted into the reflector from the lamp accommodating opening, and the bulb is disposed within the reflector so that a position of a focal point of radiated light which is reflected from an inner wall of the reflector is not situated on the electrode introducing portions and the anomalous lens, but is situated between the electrode introducing portions and the anomalous lens, forming a circle centered at an optical axis of the radiated light.

Abstract: A light projector, including an elongate housing assembly and a tubular light chamber assembly that comprises a plurality of tubular components and is coaxially enclosed by the housing assembly, with optical devices positioned within the light chamber assembly.

Abstract: A lighting device can include a light source in line and a reflector behind the light source. In front of the light source, a transparent inner lens and a transparent outer lens can be provided with a gap formed therebetween. The shape of the lens can be defined by bending a plate member so as to have a projection portion that surrounds or opens towards the light source. The inner lens and the outer lens can each have a flat part at a position opposite the light source and in the illumination direction. When observed from different positions, the light source can appear as if it is displaced or deformed.

Abstract: A light collective optical system includes a single optical member having a first reflecting surface and a second reflecting surface. In this case, the first reflecting surface partly has a first transmissive-refractive surface and the second reflecting surface partly has a second transmissive-refractive surface. The first transmissive-refractive surface and the second transmissive-refractive surface are nearly coaxially arranged. Whereby, it is possible to provide the light collective optical system which is capable of illuminating an object to be illuminated with high illuminance and is compact and a light source device using the light collective optical system.

Abstract: The illumination apparatus of microscopes comprises a collector lens for converting diversion light emanated from a light source into parallel luminous flux; a fly eye lens arranged near a backside focal position of the collector lens; and a vertical illuminator which projects two or more light source images formed by the fly eye lens on the incidence pupil of an objective lens. It is characterised in that it has a regulation means by which a diameter of luminous flux between the collector lens and the fly eye lens is changed according to selection of the objective lens.

Abstract: An illuminating system for a camera that can illuminate an area according to an angle of view of the camera for stroboscopy is provided. The illuminating system includes: a light source emitting light; and an illuminating lens arranged in an optical path of the light emitted from the light source and having a fly-eye lens surface with a plurality of lens cells thereon and an aspherical or spherical lens surface opposite to the fly-eye lens surface.

Abstract: An illumination device includes a light source part for emitting light with an intensity distribution approximately uniform in a first direction and a fly-eye lens into which the light is entered. The light source part and the fly-eye lens are arranged such that the first direction is inclined with respect to vertical and horizontal directions of arrangement of lens cells in the fly-eye lens. Since illumination light is entered into the fly-eye lens in a state of inclining with respect to the fly-eye lens, the number of superimposition patterns on the fly-eye lens is increased and illuminance non-uniformity in illumination light is suppressed.

Abstract: An illuminating device includes: a lamp device that includes a lamp body, which is a light source, and a concave reflector for reflecting light emitted from the lamp body; and a lens member that has a planar optical surface and a nonplanar optical surface opposite to the planar optical surface and is provided on an emission side of the lamp device. In the illuminating device, the lens member is arranged such that a normal line of the planar optical surface is slightly inclined at a predetermined angle with respect to an optical axis of the lamp device. The lens member is arranged such that light beams substantially parallel to the optical axis are incident on the planar optical surface, and a filter that reflects at least one of an ultraviolet ray and an infrared ray is provided on the planar optical surface.

Abstract: A backlight unit and an image display module are provided. The backlight unit includes a micro-lens unit, and a light source unit, wherein the direction in which the plurality of lenses are arranged is at an oblique angle relative to the direction in which the plurality of light sources are arranged. Accordingly, uniform brightness is provided to a display apparatus.

Abstract: There is provided a lighting system simple in configuration and capable of irradiating an irradiation image with less distortion onto an irradiation surface. For this reason, light shielding masks 24 causing light from an LED 12 to be incident on lens units 23b are arranged oppositely to a fly-eye lens 23. The opening shape of a light shielding unit 24b arranged on the light shielding mask 24 is set according to the state where the fly-eye lens 23 opposes an irradiation surface 100, and the light shielding unit 24b prohibits light in a range distorting the shape of an irradiation image on the irradiation surface 100 from being incident on the lens units 23b.

Abstract: A light source apparatus is disclosed which is capable of emerging predetermined linearly polarized light while a loss of light amount is reduced. The light source apparatus comprises plural light-emitting elements which are disposed so that their light-emitting surfaces face the direction of an emergence surface of the light source apparatus, and a polarization selective element which transmits a light component with a first polarization direction and reflects a light component with a second polarization direction different from the first polarization direction. The apparatus further comprises a reflecting surface which is disposed at a position closer to the light-emitting elements than the polarization selective element and reflects the reflected light from the polarization selective element to the polarization-selective element side.

Abstract: A headlamp for a vehicle is provided. The headlamp includes a light source, a reflector reflecting and condensing light emitted from the light source, a first lens refracting and radiating the light emitted from the light source in a forward direction, a shielding device that is disposed between the light source and the first lens and shields some of the light emitted from the light source, and a second lens that is disposed between the first lens and the shielding device and changes a light path by refracting light before being incident on the first lens.

Abstract: The illumination apparatus comprises a light source unit which has a LED for emitting illumination light, and a condenser lens for collecting the illumination light, and a main body of the illuminator of the apparatus which holds the light source unit and guides the illumination light. The light source unit comprises a heat dissipation plate which holds LED, and emits the heat emitted from LED11; and a lens frame which holds the collector lens and the heat dissipation plate so that the relative position of LED to the collector lens may be changed. The main body of the illuminator has a connection hole for connecting communicatively the inside of the main body of the apparatus to the outside, and holds the light source unit by inserting the lens frame into the connected hole.

Abstract: A ring lamp includes a light source having a first hollow cylinder with a lighting device disposed therein. The light source has an emitting surface with a light-emitting direction oriented toward an axis of the hollow cylinder. The lamp also includes a light directing device configured to direct light emission. The light directing device includes a lens system having a lens formed as a second hollow cylinder and configured to focus light into a radial plane which is orthogonal to the axis. The lens system has a ring-shaped aperture diaphragm disposed centrally in an optical path of the light emission behind the lens. The emitting surface of the light source and the lens system have a same length, are coaxial and axially aligned with each other. A radial surface which is defined by an inner radius of the lens system and the length of the lens system spans a delimited volume.

Abstract: Light incoupling structures for lighting applications, such as lightguides. The incoupling structures include an optically substantially transparent medium for transporting light emitted by a light source and an optical element including at least one hole in the medium for coupling light together with optional further optical elements. A lighting element includes a light source with related integrated optics.

Abstract: A lens, suitable for automotive applications, for use with a light source is provided. The lens has a main body defining a cross sectional shape with a curved side and a straight side. The main body is formed by rotating the cross sectional shape about an axis of revolution located outside the main body. The axis of revolution is parallel to the straight side of the cross section and passes through a focal point defined by the curved side.

Abstract: A wash light optical system for use with a light beam generator includes a converging optical element that reduces the size of a light beam from the light beam generator, a color filtration mechanism that is capable of filtering the reduced light beam to a selected one of two or more colors, a spreading optical element that increases the size of the filtered light beam, and a beam shaping optical element. The optical system may also include a dimming mechanism that is capable of reducing the intensity of the light beam to a selected one of two or more intensities. The optical system may be enclosed in a housing that includes a coupling mechanism capable of detachably mounting the housing to the light beam generator.

Abstract: An illumination optical system, an illumination unit, and an image projection apparatus employing the same are provided. The illumination optical system includes a light source irradiating a diverging light, a reflection optical system condensing the diverging light from the light source, and a lens optical system projecting the light condensed by the reflection optical system. The reflection optical system is comprised of an aspherical concave mirror. The lens optical system comprises a condensing lens having a positive refractive power in a central part and a refractive power of the condensing lens being decreased toward a circumferential part. Optical efficiency may be improved even when a light-emitting surface of the light source is relatively large and the light source cannot be regarded as a point light source.

Abstract: A display device comprising a body member having a side member which, in plan view, conforms to a first profile; characterised by a first transparent member (15) located within, and by, the body member (12) the first transparent member (15) having a boundary (16) conforming to and lying within the first profile, a second transparent member (17) located within, and by, the body member (12) the second transparent member (17) having a boundary (18) conforming to and lying within the first profile and being spaced from the first transparent member (15) so as to provide a first plenum chamber (19) bounded by the first and second transparent body members (15, 17) and the body member (12); a carrier (20) having a plurality of sources of light (L1 to L5, LL1 to LL6 . . .

Abstract: A lens component includes: a light incident portion (16) having an incident face (14) upon which light from a light source (6) is incident, the light source (6) being disposed at a light source position (15); and a plurality of plate-like light guiding portions (17, 32) disposed radially around an axis (S0) passing through the light source position (15) or a position in the vicinity thereof, and arranged to guide light incident from the incident face (14) of the light incident portion (16), in emission directions (F, F1-F3) at right angles to the axis (S0). Each of the plate-like light guiding portions (17, 32) is provided on an end face (27) thereof with a radial reflecting face (29, 29A, 29B) for internally reflecting, in the emission directions (F, F1-F3), the light incident from the incident face (14) of the light incident portion (16).

Abstract: Disclosed is an illumination optical apparatus that can enlarge a beam divergence angle. In accordance with an embodiment of the present invention, the illumination optical apparatus can include a light source, emitting a beam of light in a predetermined direction at a beam output point; a ball lens, arranged in a forward direction of the beam of light emitted from the light source; and a condensing lens group, condensing the beam of light which has passed through the ball lens on a predetermined point. With the present invention, the size and the volume of the illumination optical apparatus can be reduced by enlarging the beam divergence angle by further including a ball lens.

Abstract: LED apparatus for illumination toward a preferential side, including a light emitter having at least one LED on a base, a primary lens positioned over the light emitter and having a central axis, and a secondary lens placed with an inner surface surrounding the primary lens. The secondary lens has a base-adjacent lower end defining a main plane substantially perpendicular to the central axis, and a compound outer lens surface with a middle-region reference point defining a reference axis parallel to the central axis.

Abstract: Light-collecting illumination systems are disclosed, which include a light source module, a first meniscus lens having a convex side and a concave side and a second meniscus lens having a convex side and a concave side. The concave side of the second meniscus lens is adjacent to the convex side of the first meniscus lens and the concave side of the first meniscus lens faces the light source module for receiving light therefrom. In addition, light-collecting illumination systems are disclosed, which include a plurality of light source modules and a system of optical elements comprising a plurality of pairs of meniscus lenses, each pair being associated with a light source module.

Abstract: A light source or signaling module for the emission of an illuminating or signaling beam along a main direction, of the type including a light source, a luminous flux recovery mirror made up of a set of reflecting tiles, each reflecting tile being formed of a conical segment with two focal points, the first of which is located on the light source and a second focal point which is located, with respect to the reflecting tile, in a direction parallel to the main direction, each reflecting tile forming an image of the light source. The parameters of the conical segments with two focal points made up of the reflecting tiles are adjusted to confer upon the second focal points pre-determined photometric characteristics, and the images from the light source are directly visible.

Abstract: The present invention relates to a method for forming a light beam, and to a light assembly comprising at least one light source placed in conjunction with a fixed reflector, which reflector forms a beam of light into light forming means, which light assembly comprises a front lens, where the light forming means at least comprise a light deflecting means for changing the light angle of the light beam after passing through the front lens. The object of the invention is to achieve a light assembly, where major optical components are mechanically fixed in relation to a housing for achieving a light assembly, the mass centre of which changes only slightly during operation. A further object is to achieve a closed light assembly having openings in the case only for cooling.

Abstract: The invention is directed to an illumination device for microscopes which is provided with a halogen lamp with a reflector and a filament extending in direction of the optical axis and a scatter disk and which enables a homogeneous illumination of the visual field without additional optical components.

Abstract: Disclosed herein are backlit devices comprising multiwall sheets. In one embodiment, a backlit device comprises: a multiwall sheet and a light source. The multiwall sheet, that has a viewing side, comprises polymer walls and a rib that intersects at least two of the walls. The rib comprises a non-linear geometry. The light source is located on a side of the multiwall sheet opposite the viewing side, wherein the light source is configured to direct light at the multiwall sheet.

Abstract: An optical manifold for efficiently combining a plurality of blue LED outputs to illuminate a phosphor for a single, substantially homogeneous output, in a small, cost-effective package. Embodiments are disclosed that use a single or multiple LEDs and a remote phosphor, and an intermediate wavelength-selective filter arranged so that backscattered photoluminescence is recycled to boost the luminance and flux of the output aperture. A further aperture mask is used to boost phosphor luminance with only modest loss of luminosity. Alternative non-recycling embodiments provide blue and yellow light in collimated beams, either separately or combined into white.

Abstract: A projector comprises a light source, an Ultraviolet/Infrared Radiation (UV/IR) filter, a color wheel and means for guiding the light beam reflected by the color wheel toward directions away from the light source. The light source is for providing a light beam. The UV/IR filter is disposed with a tilt angle ranging from 13 degrees to 30 degrees. The color wheel for receiving the light beam transmits a primary color light beam of the light beam in a predetermined time section, and the other color light beam of the light beam is reflected by the color wheel. The means for guiding the light beam reflected by the color wheel toward directions away from the light source further guide a invisible light beam of the light beam reflected from the UV/IR filter.

Abstract: A lens for a backlight, including: a light transmissive body including outer and inner surface areas, the outer surface area having a convex surface and a concave surface, the inner surface area having a convex surface and a concave surface, wherein the convex surface of the outer surface area has a curvature different from a curvature of the convex surface of the inner surface area and the concave surface of the outer surface area has a curvature different from a curvature of the concave surface of the inner surface area.

Abstract: In a light source device (10), relations of ?1?Tan?1 (Hd/(2f1)) and T1<H?Hd are established, where a diameter of a circle defining an edge on the neck (121) side of a usable-light reflection area in a reflecting portion (122) of a main reflecting mirror (12) is Hd, a distance between the edge on the neck (121) side of the usable-light reflection area of the reflecting portion (122) of the main reflecting mirror (12) and an emitting center O of an emitting portion (1111) in a central axis direction of the light beam irradiated from the light source device (10) is f1, an opening diameter of a base end in an extending direction of the neck (121) is H, a diameter of sealing portion (1112, 1113) is T1, and an angle formed by lines connecting inflection points (IP1) between the emitting portions (1111) and the sealing portion (1112) with the emitting center of the emitting portion (1111) and the central axis of the light beam irradiated from the light source device (10) is ?1.

Abstract: An illumination device includes a light source generating initial light beams, a lens assembly disposed on an axis, and a reflector comprising a reflecting surface. The initial light beams include a first and second reference light beams traveling along a first and second positions, respectively. The first reference light beam passes through the lens assembly to form a first predetermined light beam traveling away from the light source. A first angle is substantially formed between the first position and the axis. The second reference light beam is reflected by the reflective surface to form a second predetermined light beam traveling away from the light source. A second angle is formed between the first and second positions. The first angle is less than or equal to the second angle. The initial light beams are guided by the lens assembly and the reflector to emit the light beams in a projecting mode.

Abstract: In some embodiments, an apparatus for use generating illumination is provided that comprises a reflective base, a first light source positioned proximate the reflective base, and a reimaging reflector positioned partially about the first light source, where a percentage of light emitted from the first light source is reflected from the reimaging reflector to the reflective base adjacent the first light source establishing a first real image. The reimaging reflector can further comprise a first sector of a first ellipsoid and a second sector of a second ellipsoid, where the first and second sectors establish the first and a second real image. Further embodiments provide a lens that includes a reimaging reflector that receives light and reflects the light establishing a first real image. The reimaging reflector can further comprise a plurality of sectors that reflect light to establish first and second real images.

Abstract: Disclosed is an illuminating device which, as a light source for a backlight device, mixes the colors of light rays of three prime colors radiated by light emitting diodes to emit white light.

Abstract: A reflector lamp or illumination system comprising a concave reflector having a parabolic or ellipsoidal front section with the focal point being a ring of points that extends horizontally outwardly from the reflector system focal point by a distance of not less than one, and no more than three, times the width of the light source used, a spherical rear section with it's focal point substantially the same focal point as the reflector system, and a finite light source located at the focal point of said reflector system. The reflector sections are dimensioned so that light rays from the finite light source and those which are reflected by the spherical rear section are reflected and re-reflected by the front section with less divergent beam angles and distributed more evenly into the desired projected beam pattern with more of said rays being projected into the desired beam path.

Abstract: An illuminating unit having a plurality of light emitting devices and collimators and a projection type image display apparatus using the same are provided. The illuminating unit includes: a plurality of light emitting devices which output light beams of predetermined wavelengths; a plurality of collimators, each having a parabolic reflection surface for reflecting the light beam in a predetermined direction, a mounting section for locating the light emitting device at the focal point of the parabolic reflection surface, a light output surface opposite to the parabolic reflection surface, and a light guide section for guiding the light beam reflected from the parabolic reflection surface to the light output surface; and one or more fixing members having two or more steps for mounting the light emitting devices and the collimators on their top surface. A plurality of light emitting devices and collimators are efficiently arranged in a small space.