Optical system retaining system for vision augmenting system
An optical system retaining system for vision augmenting system prevents the unintended removal of the optical system but does not require disassembly of the augmenting system to remove the optical system.
1. A vision augmenting system, comprising:
a housing;
an optical augmenting element installed within the housing;
a lens system attached to the housing and designed to be focused relative to the optical augmenting element; and
a detachment prevention system that includes an open jam ring having two compression tabs at either end of the open jam ring wherein said open jam ring is seated in a jam ring annular relief on the housing that prevents unintended removal of the lens system from the housing during focus adjustment, the detachment prevention system being accessible from outside of the housing.
2. The system of claim 1 , wherein the optical augmenting element is a night vision tube.
3. The system of claim 1 , wherein the lens system is a collection lens system for collecting light for the optical augmenting element.
4. The system of claim 1 , wherein the detachment prevention system engages the lens system to prevent it from being completely unscrewed from the housing.
5. The system of claim 1 , wherein the detachment prevention system comprises a ring that fits within a relief on the housing.
6. The system of claim 5 , wherein the relief is formed on an inner wall of the housing.
7. The system of claim 5 , wherein the relief is formed on an outer wall of the housing.
8. The system of claim 1 , further comprising a stop nut for indexing a focus position of the lens system relative to the housing.
9. The system of claim 8 , wherein the detachment prevention system is installed on the stop nut.
10. The system of claim 8 , wherein the detachment prevention system comprises a ring that fits within a relief on the infinity stop nut.
11. A method for retaining a lens system on a vision augmenting system, the method comprising:
installing an optical augmenting element within a housing;
installing a lens system on the housing that is designed to be focused relative to the optical augmenting element; and
preventing unintended removal of the lens system from the housing during focus adjustment by installing a detachment prevention system that includes an open jam ring having two compression tabs at either end of the open jam ring, wherein said open jam ring is seated in a jam ring annular relief on the housing with said detachment prevention system being accessible from outside of the housing after the optical augmenting element and the lens system have been installed in and on the housing.
12. The method of claim 11 , wherein the optical augmenting element is a night vision tube.
13. The method of claim 11 , wherein the lens system is a collection lens system for collecting light for the optical augmenting element.
14. The method of claim 11 , wherein the detachment prevention system engages the lens system to prevent it from being completely unscrewed from the housing.
15. The method of claim 11 , wherein the detachment prevention system comprises a ring that fits within a relief on the housing.
16. The method of claim 15 , wherein the relief is formed on an inner wall of the housing.
17. The method of claim 15 , wherein the relief is formed on an outer wall of the housing.
18. The method of claim 11 , further comprising an infinity stop nut for indexing a focus position of the lens system relative to the housing.
19. The method of claim 18 , wherein the detachment prevention system is installed on the infinity stop nut.
20. The system of claim 18 , wherein the detachment prevention system comprises a ring that fits within a relief on the infinity stop nut.