MULTILENS OPTICAL SYSTEM Russian patent published in 1995 - IPC

FIELD: optical instrument engineering. SUBSTANCE: case 1 has basic edge K. Lenses in holders 2-6 are mounted inside the case, which lenses have basic surfaces in form of external diameters Д,Е,Ж,З,И which are mounted in parallel to basic edges. Intermediate ring 12 is mounted among the lenses in holders 3 and 5. Lenses in holders 2-4 have basic external diameters Д,Е,Ж correspondingly, which are made to be 0,008-0,01 lesser than internal diameter of case 1. Basic diameters З,И of lenses in holders 5, 6 interact with step-wise insertions 7, which are mounted in holes onto basic planes of case 1. Basic surfaces are made preferably at angle of 90 deg one relatively another, and in perpendicular to basic plane of case 1. Holes, inside which step-wise insertions are mounted, are disposed in perpendicular to basic planes and to basic external diameters З,И of lenses in holders 5. Lenses in holders 2-6 and intermediate ring are compressed against to basic plane of case 1 by cap 14 due to resilient washer 13. EFFECT: improved accuracy; improved reliability of operation. 3 dwg