摘要:
Light that is emitted from an LED chip at a first angle of incidence or less relative to the LED chip is permitted to leave the LED package. Light emitted from the LED chip at an angle of incidence greater than that is kept from leaving the LED package and is recycled back within the LED package. The recycled light is reemitted from the LED package after its angle of incidence relative to the LED chip has been changed, for example by passing it through a diffuser.
摘要:
Light that is emitted from an LED chip at a first angle of incidence or less relative to the LED chip is permitted to leave the LED package. Light emitted from the LED chip at an angle of incidence greater than that is kept from leaving the LED package and is recycled back within the LED package. The recycled light is reemitted from the LED package after its angle of incidence relative to the LED chip has been changed, for example by passing it through a diffuser.
摘要:
An illumination light source includes an incoherent solid state light source adapted to emit light over at least one light emission surface and having a total light emission surface area S0; a light circulation device including at least one light receiving surface adapted to receive the light from the incoherent solid state light source, and a light extraction area having a first surface area S1; and a light extraction device for extracting the light from the light circulation device at the light extraction area, wherein S1
摘要:
An illumination light source includes an incoherent solid state light source adapted to emit light over at least one light emission surface and having a total light emission surface area S0; a light circulation device including at least one light receiving surface adapted to receive the light from the incoherent solid state light source, and a light extraction area having a first surface area S1; and a light extraction device for extracting the light from the light circulation device at the light extraction area, wherein S1
摘要翻译:照明光源包括非相干固态光源,其适于在至少一个光发射表面上发射光并具有总发光表面积S 0; 光循环装置,其包括适于接收来自非相干固态光源的光的至少一个光接收表面,以及具有第一表面积S 1的光提取区域。 以及光提取装置,用于在光提取区域提取来自光循环装置的光,其中S 1 0 SO 2。 因此,通过将光分布在更小的面积上来增加光的表观亮度。
摘要:
An apparatus for improved contrast in projection optical systems consists of a polarizing beam splitter (PBS) in combination with two or more waveplates whose fast exes are aligned perpendicular to each other. The apparatus has an effective broadband frequency response that is better than that of the individual retarders acting alone, and through the selection of a birefringence factor and thickness of the individual retarders, wavelength dependencies are minimized.
摘要:
Method and apparatus of coupling light into a light guide using error detecting and correcting systems. A rectangular light guide is mated with an X-axis optical fiber and with a Y-axis optical fiber. An X-axis photodetector senses light that couples from the light guide into the X-axis optical fiber, while a Y-axis photodetector senses light that couples from the light guide into the Y-axis optical fiber. An error detector compares the outputs of the X-axis and the Y-axis photodetectors to produces error signals that depend on the X-axis, the Y-axis, and the Z-axis positional errors. The errors signals are applied to an error correcting system that adjusts the relative position of the light guide and the light directed onto the light guide.
摘要:
Apparatus is disclosed for directing flashes of light into the eyes of a user. LED's 17 are mounted in the eyepieces of goggles 3 or spectacles 43 to face the eyes of a wearer. The goggles 3 or spectacles 43 are opaque and are provided with opaque flanges 9 to avoid ambient light reaching the eyes of a wearer. The frequency and brightness of the flashes is variable. The device is useful in the treatment of migraine, pre-menstrual syndrome, insomnia and nervous tension. Alternatives are disclosed using remote light sources 51 and optic fibres 53 or mirrors 57, mechanical or electro-optic shutters 59, 61, and arrangements using a common light source 51 for both eyes.
摘要翻译:公开了用于将闪光灯引导到用户的眼睛中的装置。 LED 17安装在护目镜3或眼镜43的目镜中以面对穿戴者的眼睛。 护目镜3或眼镜43是不透明的,并且设置有不透明凸缘9,以避免环境光到达佩戴者的眼睛。 闪光灯的频率和亮度是可变的。 该装置可用于治疗偏头痛,月经前期综合征,失眠和神经紧张。 公开了使用远程光源51和光纤53或反射镜57,机械或电光快门59,61以及使用用于双眼的公共光源51的布置的替代方案。