Semiconductor light emitting device

Abstract

Abstract PURPOSE:To enable to make the optical axis of the radiation light of ar LED approximately parallel with a mechanical axis and further coincident approximately with the center axis of a cap, by equipping a semiconductor light emitting element, a spherical lens, and a transparent body wherein the main surfaces opposed to each other have non-parallel surfaces. CONSTITUTION:This device is constituted of the light emitting diode element 1, the spherical lens 2, a transparent resin 3, a stem 5, the cap 8, the glass plate 9 wherein the upper and lower surfaces are non-parallel, metallic fine wires W, glasses G, and terminal leads L. Besides, the glass plate 9 is formed in non- parallel flats. By inclining the lower surface 11 of the glass plate 9 according to the inclination of the optical axis 6 of the radiation light from the spherical lens, and crossing it obliquely with the mechanical axis 7, the radiation light is refracted on this glass plate 9 and radiated as a fine parallel beam having an optical axis 6' parallel approximately with the mechanical axis 7.

Inventors

• 👤 Osamu Hasegawa
• 👤 治 長谷川

Bibliographic Details