INPUT DEVICE

• Main Authors: MIZUTANI TORU, SHIBATA NAOKI
• Format: Patent
• Language: English; Korean
• Published: 03.04.2013
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

PURPOSE: An input device is provided to prevent unnecessary light reaching a light receiving element by spreading unnecessary light which is generated from a light emitting element and leaked to the light receiving element. CONSTITUTION: A light receiving element(6) is located at an terminating point of a main core(2) for light emission. Light generated from a light emitting element(5) and flowing from a starting point of the main core to the terminating point is emitted from a front end surface of a branch core and the rest of the light penetrates through the terminating point surface of the main core to be leaked to the light receiving element. An air layer of a gap(V) between the light receiving element and the terminating point of the main core for light emission spreads the leaked light to be operated as a light delivery prevention unit for preventing the leaked light from reaching the light receiving element. [Reference numerals] (2) Main core; (2A) Terminating point(terminating point surface); (2b) Core; (5) Light emitting element; (6) Light receiving element; (P) Air layer; (S) Hollow for input; (V) Gap; (W) Optical waveguide;