Light source device for tubular observation device

摘要

A light source device includes a primary light source unit and a light converting unit. The primary light source unit includes a primary light emitting portion. The light converting unit includes a light converting member and a secondary light emitting portion. In the two-dimensional shape of the secondary light emitting portion projected on a surface perpendicular to the optical axis of primary light, the length of the minimum width of the two-dimensional shape passing through the center of gravity of the two-dimensional shape is different from the length of the maximum width of the two-dimensional shape passing through the center of gravity.

主权项

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:
the light converting member which converts the optical properties of the primary light when the primary light is applied thereto and which generates secondary light different from the primary light, anda secondary light emitting portion disposed on a distal end surface on an emitting side of the light converting unit, the secondary light emitting portion emitting the secondary light generated by the light converting member, the secondary light emitting portion being disposed on a distal end of the holding member inside an outer periphery of the holding member, 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.