Title:
INCANDESCENT BULB
Document Type and Number:
Japanese Patent JPS5430687
Kind Code:
A
Abstract:
PURPOSE: To check the glaring degree of light within the extent that no considerable disturbance is posed to actual use while making the luminous intensity directly under the light as large as possible, by properly changing the thickness distribution of light diffusing film applied on the inner surface of a bulb.
Inventors:
HOSOYA KATSUYUKI
HIROTA TAISUKE
HIROTA TAISUKE
Application Number:
JP9503477A
Publication Date:
March 07, 1979
Filing Date:
August 10, 1977
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H01K1/32; (IPC1-7): H01K1/32