US12644667 - Reticle unit and optical sighting device
The patent describes a reticle unit for optical sighting devices that incorporates an optical fiber to create a light-emitting dot at the center of the sight line. The design includes a frame with a cutout for the optical fiber, which features a spherical light incident portion and an inclined light-emitting portion to enhance visibility.
Claim 1
1 . A reticle unit comprising: 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 frame to which the reticle is attached, wherein a light incident portion for receiving light is formed at one end of the optical fiber protruding out of a cutout portion of the 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, 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, the cutout portion penetrates through the frame in an axial direction of the frame, the reticle has a peripheral portion with a circular opening, a surface of the frame in the axial direction has a recess corresponding to the peripheral portion, and the peripheral portion is fixed to the recess. 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 frame to which the reticle is attached, wherein a light incident portion for receiving light is formed at one end of the optical fiber protruding out of a cutout portion of the 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, 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, the cutout portion penetrates through the frame in an axial direction of the frame, the reticle has a peripheral portion with a circular opening, a surface of the frame in the axial direction has a recess corresponding to the peripheral portion, and the peripheral portion is fixed to the recess.
Google Patents
https://patents.google.com/patent/US12644667
USPTO PDF
https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12644667