Lens carrier
US4709311A · kind A · utility
17Cited by
14References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1986 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Jul 16, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/406
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lens carrier (10) is disclosed for use in a stage lamp. The lens carrier (10) supports a lens (26) in alignment with the lamp axis (12) while permitting limited movement of the lens along the lamp axis to focus the lamp toward the light. First and second members, (14, 22) define facing cylindrical surfaces (20, 24). A bearing assembly (28) having resilient deformable ball bearings (34) is positioned between the cylindrical surfaces to maintain alignment of the lens on the lamp axis and permit the second member and lens to move along the lamp axis relative to the first member while maintaining the alignment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.