Illuminated sighting device with removable optical fibers
View Patent ↗An illuminated sighting device for an archery bow includes a bracket member for mounting to an archery bow, a frame portion with a sight window adapted for connection to the bracket member, and a first set of optical fibers connected to the plurality of sight pins. Each optical fiber has a distal end forming an illuminated sight dot coincident with its respective sight pin. A plurality of elongate light collectors, in the form of a second set of fluorescent-doped optical fibers, are optically coupled to the first set of optical fibers via a retaining member that is removably connected to one of the bracket member, frame portion and sight pins such that one or more of the light collectors can be removed and replaced independently of the first set of optical fibers.
1. An illuminated sight assembly comprising:
a sight pin having a first bore;
at least one first optical fiber operably associated with the sight pin, the first optical fiber having a distal end forming an illuminated sight dot and a proximal end spaced from the distal end with a first enlarged diameter portion located in the first bore;
at least one light collector comprising a fluorescent doped optical fiber with proximal and distal ends, the optical fiber being configured to receive radiant energy along its length and direct the radiant energy to the proximal and distal ends, the distal end being optically coupled to the proximal end of the at least one first optical fiber such that radiant energy is transmitted from the at least one light collector to the distal end of the first optical fiber to thereby form the illuminated sight dot; and
a retaining member removably connected to the sight pin and extending into the first bore, the retaining member having a second bore coaxial with the first bore for receiving the light collector for removably connecting the distal end of the light collector to the proximal end of the first optical fiber such that the light collector can be removed and installed independently of the first optical fiber by removing the retaining member from the first bore, the distal end of the light collector having a second enlarged diameter portion located in the first bore and facing the first enlarged diameter portion for optically coupling the at least one first optical fiber with the at least one light collector, with the first and second enlarged diameter portions being greater than a cross dimension of each of the first and second bores such that the first optical fiber and the light collector are retained in the sight pin when the retaining member is connected to the sight pin;
wherein removal of the retaining member from the sight pin allows the light collector to be removed from the retaining member and replaced with another light collector.
2. An illuminated sight assembly according to claim 1 , wherein the sight pin comprises:
a main body portion and a pin portion extending from the main body portion;
a continuous slot extending through the main body portion and the pin portion; and
an opening located at a distal end of the pin portion;
wherein the at least one first optical fiber is positioned in the continuous slot such that the distal end of the first optical fiber is coincident with the opening to thereby contain the illuminated sight dot.
3. An illuminated sight assembly according to claim 2 , wherein the first bore is formed in the main body portion, the first bore being coaxial with a proximal end of the continuous slot.
4. An illuminated sight assembly according to claim 3 , wherein the retaining member comprises a threaded fastener and the first bore of the main body portion comprises internal threads for engaging the threaded fastener for removably connecting the retaining member to the main body portion.
5. An illuminated sight assembly according to claim 4 , wherein the distal end of the second optical fiber has a lens with a cross dimension that is larger than the cross dimension of the second bore of the fastener to thereby retain the second optical fiber in the retaining member.
6. An illuminated sight assembly according to claim 1 , wherein the at least one light collector comprises a plurality of interchangeable light collectors, each light collector having a fluorescent dopant of a different color, such that a color of the illuminated sight dot is changed when one of the interchangeable light collectors is exchanged for another of the interchangeable light collectors.
7. An illuminated sight assembly according to claim 1 , and further comprising:
a frame portion forming a sight window with the at least one sight pin extending into the sight window.