Reticle unit and optical sighting device

An optical sighting device with a reticle unit built in a lens barrel,

• wherein the reticle unit comprises a reticle that has a sight line, an optical fiber that forms a dot by guiding light from a light source to a center of the sight line, and a metal frame to which the reticle is attached,
• a light incident portion for receiving light is formed at one end of the optical fiber and arranged in a cutout portion of the metal frame,
• a light-emitting portion for emitting light is formed at another end of the optical fiber,
• the light incident portion has a spherical surface that has a diameter greater than a diameter of the optical fiber,
• the light-emitting portion has an inclined surface that reflects light passing through the optical fiber, and
• the optical fiber is fixed along a part of the sight line so that the light-emitting portion is positioned at the center of the sight line.