US 12,446,763 B2
Endoscope
Koji Matsumoto, Hachioji (JP)
Assigned to OLYMPUS MEDICAL SYSTEMS CORP., Tokyo (JP)
Filed by OLYMPUS MEDICAL SYSTEMS CORP., Tokyo (JP)
Filed on Nov. 22, 2023, as Appl. No. 18/517,516.
Prior Publication US 2025/0160632 A1, May 22, 2025
Int. Cl. A61B 1/05 (2006.01); A61B 1/002 (2006.01); A61B 1/06 (2006.01)
CPC A61B 1/0623 (2013.01) [A61B 1/002 (2013.01); A61B 1/0661 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An endoscope comprising:
a light guide configured to guide the light emitted from a light source; and
a first positive lens configured to concentrate light emitted from the light guide onto an internal focus point and to emit the concentrated light to irradiate an object,
wherein the internal focus point is located in a position where a conjugate image of the end surface on an emission side of the light guide is formed; and
the internal focus point is closer to the light guide than an intermediate point between an end surface on an incidence side of the first positive lens and an end surface on an emission side of the first positive lens on an optical axis of the first positive lens.