초록 ▼

An alpha-numeric array is provided for the selective display of characters as controlled by associated character generator programming circuitry. The display array in one character format utilizes a 5×7 matrix array of individually operable illumination sources, LED solid state lamps for example, wi

An alpha-numeric array is provided for the selective display of characters as controlled by associated character generator programming circuitry. The display array in one character format utilizes a 5×7 matrix array of individually operable illumination sources, LED solid state lamps for example, with programmed combinations of the individual illumination sources being operated to display the programmed characters. The display array includes a lens and front panel array having integrally formed lens areas. The lens areas of the lens and front panel array when unactuated are essentially indistinguishable from the front panel array background area thus providing improved contrast. The display array also includes a reflector array having integrally formed reflector cavities. The integrally formed reflector cavities include predetermined surface characteristics for collimating the light rays emanating from the central axis of the reflector cavities. The display array also includes an illumination source alignment and mounting array having integrally formed illumination source mounting arrangements and integrally formed illumination source alignment arrangements.

대표청구항 ▼

A generally dish shaped reflector cavity having a reflector surface comprising means for collimating light emanating from a series of points along the central axis of the reflector cavity, said collimating means comprising a predetermined surface characteristic of said reflector surface including a

A generally dish shaped reflector cavity having a reflector surface comprising means for collimating light emanating from a series of points along the central axis of the reflector cavity, said collimating means comprising a predetermined surface characteristic of said reflector surface including a plurality of parabolic surfaces having different foci and being arranged in the same order as their respective foci are arranged along said central axis.