Patent ID: 9423103
Filing Date: 2016-08-23
CPC Classification: A61B,F21V,G02B

Claim Text:
1. A light source device for a tubular observation device, the light source device comprising: a holding member for holding a light converting member, the holding member being separated from an outer periphery of the tubular observation device, the holding member further having a cavity for at least accommodating the light converting member, a primary light source unit comprising a primary light emitting portion which emits primary light, and a light converting unit comprising: wherein in a two-dimensional shape of the secondary light emitting portion projected on a surface perpendicular to an optical axis of the primary light, a length of a minimum width of the two-dimensional shape passing through a center of gravity of the two-dimensional shape is different from a length of a maximum width of the two-dimensional shape passing through the center of gravity.