Abstract:
An elliptical lens comprises a lens body having a proximal section and a distal section. The proximal section has at least one input surface for receiving light from a light source and the distal section has at least one output surface through which light exits the lens body. The proximal section further comprises a substantially elliptical peripheral surface receiving at least a portion of the light entering the lens body via the at least one input surface and directing at least some of the received light via total internal reflection to the distal section such that at least a portion of the light directed to the distal section exits the lens body through said at least one output surface. Optical assemblies having said elliptical lens may be embedded in medical devices such as endoscopes to provide efficient illumination.
Abstract:
A conical frustum shaped optical lens (110) is made of transparent material, the conical frustum shaped optical lens (110) having a long diameter at a first end and a short diameter at a second end and the conical frustum shaped optical lens (110) defined by multiple rotational surfaces (210, 220, 230, 240) and a flat fifth surface (250). The conical frustum shaped optical lens (110) is configured to create folded light paths within the conical frustum shaped optical lens (110) such that a majority of light from a light source is reflected twice within the conical frustum shaped optical lens (110) before being output. An MR16 form factor LED spotlight including the conical frustum shaped optical lens (110) can achieve a reduced light beam angle and a higher central luminous intensity.
Abstract:
A lighting apparatus comprising a single point-like light source (108), preferably a LED, and a transmissive lens structure (202, 302) optically connected to said light source defining a plurality of optically functional, mutually different segments (204, 206, 208, 304, 306, 308) dedicated for controlling the light, e.g. distribution and direction, originally emitted by said single light source. A corresponding transmissive element is presented.
Abstract:
An optoelectronic device (30) includes a semiconductor substrate (132), an array (120) of optical emitters arranged on the substrate in a two-dimensional pattern, a projection lens (146) and a diffractive optical element (DOE - 144). The projection lens is mounted on the semiconductor substrate and is configured to collect and focus light emitted by the optical emitters so as to project optical beams containing a light pattern corresponding to the two- dimensional pattern of the optical emitters on the substrate. The DOE is mounted on the substrate and is configured to produce and project multiple overlapping replicas (152, 154, 156) of the pattern.
Abstract:
A luminaire component for use in a luminaire, said component comprising:- (i) an LED module on a first printed circuit board (PCB), the first PCB having a front face on which the LED module is located; (ii) a second PCB mounted forward of the front face of the first PCB; (iii) connection means adapted to connect the second PCB to the first PCB. The invention also extends to a luminaire bezel containing one or more sensors, where the bezel is removably attachable to the luminaire. The sensor(s) can measure one or more environmental characteristics and electrical and signal contacts between the bezel and the luminaire are provided. Preferably the electrical and signal contact means is cableless.
Abstract:
Light emitter packages (10, 30, 50, 120), systems (90, 100, 110), and methods having multiple light emitter chips and operable at multiple voltages are provided. In some aspects, light emitter packages described herein include a submount (12) having a plurality of contact pads (26', 26", 28', 28", 132A, 132B, 132C, and 132D) and a plurality of light emitting diode (LED) chips (14, 40, 62) disposed over one or more surfaces thereof. The plurality of contact pads (26', 26", 28', 28", 132A, 132B, 132C, and 132D) are configured to pass electrical current into the plurality of LED chips (14, 40, 62) for allowing the package (10, 30, 50, 120) to be operable in at least two different voltages. The package (10, 30, 50, 120) can be operable at approximately 3 volts (V) or more, approximately 6V or more, approximately 9 V or more, approximately 12V or more, approximately 18 V or more, or approximately 36 V or more.
Abstract:
Изобретение относится к осветительным системам, а именно, к фарам транспортных средств и может быть использована в качестве основного головного освещения легковых и грузовых автомобилей. Фара транспортного средства включает, по крайней мере, один светодиод и систему линз. Система линз содержит из рассеивающую и регулирующую составные линзы. Рассеивающая составная линза составлена из двух плосковогнутых линз. Регулирующая составная линза состоит из установленных последовательно по ходу светового потока собирательной плосковыпуклой линзы и преломляющего прямоугольного клина. Регулирующая составная линза установлена между светодиодом и рассеивающей составной линзой с возможностью управляемого перекрытия светового потока. Изобретение позволяет повысить надежность работы системы переключения дальнего/ближнего света.
Abstract:
발광디바이스가 개시된다. 이 발광디바이스는, 기판과, 상기 기판 상에 실장된 발광다이오드 칩과; 상기 발광다이오드 칩을 덮도록 상기 기판 상에 형성된 몰딩부와; 상기 기판 상에 결합되어 상기 몰딩부를 덮는 렌즈 캡을 포함한다. 상기 렌즈 캡과 상기 몰딩부 사이에는 에어 갭이 형성된다.
Abstract:
Exemplary embodiments of the present invention relate to an illumination lens disposed over a light-emitting diode (LED). The illumination lens includes an internal surface surrounding the LED and configured to intercept light emitted by the LED, wherein the internal surface comprises an arch-shaped non-rotationally symmetric, elongated horizontal cross-section. The illumination lens also includes an external surface comprising a central cusp, the external surface extending laterally with non-axially-symmetrical profiles in different horizontal directions, the non-axially-symmetric profiles being elliptical with respect to a tilted major axis of the illumination lens, wherein the light-emitting device is configured to produce an elongated illumination pattern.