摘要:
A light emitting arrangement comprises:—a plurality of solid state light sources, forming at least one group of light sources, arranged to provide a light distribution comprising a first light portion and a second light portion, and —at least one optical component adapted to at least partly collimate light emitted by said light sources, to yield output light exiting the light emitting arrangement comprising central output light and peripheral output light, wherein said central output has a dominant wavelength of 555±20 nm and a light intensity of at least 3 cd/m2, and said peripheral output light has a dominant wavelength of 507±30 nm and a light intensity of less than 3 cd/m2. The light emitting arrangement thus provides an emission spectrum which is related to the intensity and the direction of emitted light, and can be adapted to enhance the visibility of objects and colors directly beneath the light emitting arrangement as well as at a distance therefrom. The light emitting arrangement is therefore particularly well suited for outdoor illumination at poor ambient light conditions, such as at dawn, dusk, and dark.
摘要:
Stage light fixture provided with: - a short arc lamp (3) adapted to emit a light beam along an optical axis (B); - a reflector (4) associated to the short arc lamp(3) so as to concentrate light beam rays substantially at a work point (PL); - an output optical assembly (5), arranged at the most downstream point along the optical axis (B), having a focal point (PF) arranged between the light source (3) and the output optical assembly (5) and coinciding with the work point (PL); - at least one color assembly (26) comprising a plurality of color devices (40, 41, 42) configured to selectively color the light beam; the color assembly (26) being arranged between the short arc lamp(3) and the work point (PL).
摘要:
A light fixture is provided that includes a plurality of light emitting sources, such as e.g., LEDs, that are arranged along a longitudinal direction. A heat sink provides a support structure for the lights while also assisting with the dissipation of heat. A diffuser covers the light emitting sources and is also supported by the heat sink. One or more optical elements such as e.g., a reflector or internally reflecting lens may be used to help direct light rays from the light emitting sources. Certain features may be added at the ends of the light fixture for mounting upon a surface and/or for further controlling the direction of light rays projecting from the light fixture. The light fixture is suitable for a variety of applications including e.g., the illumination of products displayed on shelving for consumer viewing.
摘要:
Presently disclosed is a lighting system and methods of using the lighting system for in vitro potency assay for photofrin. The lighting system includes a lamp housing, a first lens, an infrared absorbing filter, an optical filter, and a second lens. The lamp housing includes a lamp and a light-port. In operation, broad spectrum light from the lamp exits the lamp housing by passing through the light-port. The first lens then collimates the broad spectrum light that exits the lamp housing through the light-port. The infrared absorbing filter then passes a first portion of the collimated broad spectrum light to the optical filter and absorbs infrared light of the broad spectrum light. The optical filter then passes a second portion of the collimated broad spectrum light to the second lens. The second lens then disperses the second portion of the collimated light to provide uniform irradiation of a cell culture plate. A method of using the lighting system for studying a photosensitizer is also disclosed.
摘要:
The present invention relates to an illumination device, in particular for medical lighting, in which white LEDs, red LEDs and a colour filter are combined.
摘要:
The present invention relates to an illumination device, in particular for medical lighting, in which white LEDs, red LEDs and a colour filter are combined.
摘要:
The present invention relates to an illumination device, in particular for medical lighting, in which white LEDs, red LEDs and a colour filter are combined.
摘要:
A lamp device includes a supporting frame, a light emitting diode (LED) array source, a light filter, two end caps and two couples of electrodes. The LED array source is disposed on the supporting frame. The light filter is arc-shaped and combined with the supporting frame as a tubular structure, wherein the arc surface of the light filter is a light emitting surface of the LED array source. The light filter is used for absorbing a ray in a specific wavelength range of the emitting light of the LED array source. The two end caps are disposed at two ends of the tubular structure respectively. The two couples of electrodes are disposed at two ends of the tubular structure and mounted on the two end caps respectively for electrically connecting to the LED array source.
摘要:
A lighting module that projects various colors, hues, and intensities of light. The device includes a light source (10) and a reflector (12) to direct the light along an optic path. A primary optical element (16) reduces the cross section of effected light regions as the light enters a filter assembly (18) area in the optic path. Filters (180) in the filter assembly (18) are deployed in varying combinations and to varying degrees to produce the color, hue, and intensity of light desired by the user. The refracting action of the optical element (16) allows the filters (180) to be physically positioned in the optic path but to have no effect on the light until the filters are rotated so that filter segments (1801) align with optical segments (161), and the filter changes the light being projected from the lighting module.
摘要:
Die Erfindung beschreibt eine Innenleuchte, insbesondere zur Beleuchtung von Warenpräsentationsflächen, mit einem transparenten Leuchtenschirm (2) und einem optischen System (5, 6) mit einem Leuchtmittel (5), welche dadurch gekennzeichnet ist, daß das optische System (5, 6) in einem oberhalb des Leuchtenschirms (2) vorgesehenen Leuchtmittelraum (3) positioniert ist und durch eine Lichteintrittsöffnung (2a) an der Oberseite des Leuchtenschirms in diesen Licht abstrahlt und daß am unteren Rand des Leuchtenschirms (2) ein nach innen ragender, diffus reflektierender Steg (9) vorgesehen ist, der zumindest einen Teil des austretenden Lichts in den Leuchtenschirm (2) zurück reflektiert.