Abstract:
A magnetic holder for letters appearing on a wall sign. A typical application would be for signs requiring halo glow lighting. With such a sign, the letter itself is unlit, and the wall is lit by soft lighting from behind the letter. Lighting could be accomplished with the use of a plurality of light emitting diodes (LED). The Present Invention comprises a mounting plate that is securely attached to the wall. The LED's, lighting circuitry, and magnets are securely fastened to the mounting plate. The letter is a hollow magnetic channel letter that is slightly larger than the mounting plate. The letter is positioned over the mounting plate, and is held in position by the magnets. The letter may be manually positioned on the plate for proper alignment.
Abstract:
Die Erfindung betrifft eine Beleuchtungseinrichtung mit mindestens einer Leuchtdiode und einem Kühlkörper (1) zur Kühlung der mindestens einen Leuchtdiode, wobei der Kühlkörper (1) entweder mit Anschlüssen (13, 14) für einen Kühlmittelfluss durch den Kühlkörper (1) versehen ist oder die Beleuchtungseinrichtung zur Kühlung der mindestens einen Leuchtdiode mindestens ein Peltier-Element oder mindestens ein Heat-Pipe-Element umfasst.
Abstract:
Die Erfindung betrifft eine Beleuchtungseinrichtung mit mindestens einer Leuchtdiode (3) und einem Kühlkörper (1) zur Kühlung der mindestens einen Leuchtdiode (3), wobei der Kühlkörper (1) mit Verriegelungsmitteln (17, 18, 19) versehen ist, die zur Bildung eines Bajonettverschlusses mit einer Halterung (30) für die Beleuchtungseinrichtung dienen. Vorzugsweise ist mindestens eine der erfindungsgemäßen Beleuchtungseinrichtungen als Lichtquelle in einem Fahrzeugscheinwerfer angeordnet.
Abstract:
Methods and optical systems for thermally compensated optical scanning of a target sample. The present invention also relates to methods and systems for performing sample assays, and for producing and measuring optical responses and signatures.
Abstract:
An LED light that includes an LED light source. A thermoelectric device is configured to maintain the LED light source within a predetermined temperature range. A controller provides a pulse signal to the LED light source, so that the LED light can particularly operate as a strobe light. Such an LED light can find application in an obstruction light.
Abstract:
A method and apparatus for improving the cosmetic appearance of a region of skin (11) affected by Acne Vulgaris, Rosacea or similar skin condition by means of directing light radiation (12) from an illuminating device (1) on to the skin (11). The apparatus (10) comprises a control unit (9) that operates one or more LEDs (7) (light emitting diodes) of the illuminating device (1). Each dose of light radiation (12) lasts for at least 100ms, during which time the skin 11 receives light energy from the LED(s) (7), which causes a photochemical reaction that stimulates the production of free radicals (singlet oxygen) that react with, and at least partially disable or destroy, bacteria that contribute to the symptoms of the skin condition. The light energy directed on to the skin (11) during any given period of 10µs is less than 0.5 Jcm 2 , and during any given period of 100ms is less than 5 Jcm -2 . Substantially no beneficial photo-thermal reaction occurs within the skin (11). Light having wavelengths around 405nm and/or 585nm is used. The duration of a single dose may be much longer than 100ms and can last up to 10 hours (for overnight treatment).
Abstract:
A cooled light emitting apparatus 1 comprises a light source including a close packed array 2 of light emitting diode devices (high intensity LEDs) and a cooling system for cooling the light source. The cooling system comprises a thermoelectric cooling device in the form of a Peltier device 4 connected via a heat spreader 3 to the light source and a heat exchange system 5, 6 for removing heat from the Peltier device 4. The heat exchange system 5,6 uses liquid coolant (or refrigerant) to cool the Peltier device 4. By extracting heat from the LED array 2 at a rate greater than 5W cm -2 it is possible to maintain the LED array at a temperature of less than -10 degrees Celsius, and thus emit light having an optical power density of greater than 1Wcm -2 .
Abstract translation:冷却发光装置1包括光源,其包括发光二极管装置(高强度LED)的紧密堆积阵列2和用于冷却光源的冷却系统。 冷却系统包括通过散热器3连接到光源的珀耳帖装置4形式的热电冷却装置和用于从珀耳帖装置4去除热量的热交换系统5,6。热交换系统5,6 使用液体冷却剂(或制冷剂)来冷却珀耳帖装置4.通过以大于5W cm -2的速率从LED阵列2提取热量,可以将LED阵列保持在小于-10度的温度 摄氏度,因此发光的光功率密度大于1Wcm -2。
Abstract:
The electronic component package (10) of the present invention includes a sealed chamber; a liquid or gel (20) contained in the sealed chamber; at least one electronic component (12) disposed in the sealed chamber in physical and thermal contact with the liquid or gel (20); and at least one electrical conductor electrically coupled to the electronic component and extending out of the sealed chamber. The electronic component(s) (12) may include any one or combination of a radiation emitter, a thermal or optical sensor, a resistor, and a microprocessor or other semiconductor component.