An illumination system for illuminating a surface includes a reflecting element having a finite focal length. A light source is located at a point, close to a focal point of the reflecting element, which is deviated from the principal axis of the reflecting element. Light from the light source is reflected by the reflecting element, whereby light with parallel rays is directed toward the surface. The surface is illuminated with symmetrical illuminance distribution with respect to the optical axi...

An apparatus for illuminating an object in a defined area. The apparatus comprises a light source for projecting a beam of light in a defined area. A mounting rotatably supports the light source to intermittently illuminate the object in the defined area with the beam of light at substantially equal intervals. A control establishes the frequency at which the beam of light intermittently illuminates the object in the defined area at a frequency of at least 12 cycles per second. A balance is adjus...

Disclosed herein is a current control for a lighting assembly, which may be an LED lighting assembly, which may be a pulse width modulated ("PWM") current control or other form of current control where each current-controlled unit is uniquely addressable and capable of receiving illumination color information on a computer lighting network. In an embodiment, the invention includes a binary tree network configuration of lighting units (nodes). In another embodiment, the present invention comprise...

An illumination device for an image input device includes a cylindrical light guiding unit, a board having a plurality of light emitting diode elements, a connection member connecting the light guiding unit with the board and a terminal reflection member formed at one end of the light guiding unit. A surface of the light guiding unit has a scattering reflection member extending linearly along the axial direction of the light guiding unit. A cylindrical reflection member is spaced around the ligh...

An improved apparatus for illuminating a display, such as a lens, includes a source of nonwhite light of a first color at an energy level which can be perceived by the human eye. The nonwhite light of a first color is reflected from a reflector to obtain white light. In one embodiment of the invention, the nonwhite light source was a solid state device (light emitting diode) which produced blue light at a high-energy level and green and red light at relatively low energy levels with the result t...

A flexible illumination tape is provided with the emission from a number of luminous objects directed in a fixed direction. It comprises a long taping material of synthetic polyamide resin, etc., a plurality of luminous elements comprising luminous diodes, etc. mounted along the longer direction of the taping material, and an electric conductor of copper foil, etc. applied to both sides of the taping material. The plurality of luminous elements are mounted with the emission set in a fixed direct...

An illumination device 1 and methods for producing said device and parts thereof for backlighting a liquid crystal display 3 wherein the illumination device comprises a solid substrate 5 containing at least one groove 11 and an optical fiber 7 comprising an inner core 23 and an outer cladding layer 25 fitted into the groove(s) 11. The outer cladding layer 25 is of reduced thickness on the exposed side of the core 23 such that, light supplied along the optical fiber 7 from a light source 9, is tr...

A thin illumination device providing uniform luminance distribution on the diffusing plate comprising a reflecting plate, linear light sources arranged in the vicinity of the reflecting plate and a diffusing plate arranged on the opposite side of the reflecting plate with regard to the light sources, section of the reflecting plate having a shape of continuous curves having different curvature.

An illumination apparatus is disclosed which efficiently irradiates an irradiation surface without destroying the symmetry of an illuminance distribution at the irradiation surface. A light source is displaced from a center of curvature of a spherical mirror in a direction in a displacement plane which includes an axis of symmetry of the spherical mirror so as to form a light source image at a position off the light source. Due to this, a ray from the spherical mirror passes off the light source...

An illumination device of this invention includes a flash light source for radiating flash light, a reflector, arranged on a side opposite to an object with respect to the flash light source, for reflecting a light beam radiated from the flash light source, and a refractor for projecting a light beam directly radiated from the flash light source and a light beam reflected by the reflector toward the object. The refractor adopts a Fresnel lens having a rotation-symmetrical shape with respect to i...