Structure for stabilizing image in optical system
US5172276A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1990 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Aug 29, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A structure for preventing an image being shaken when a vibration occurs in an optical system so as to stabilize the object. A compensating lens is incorporated in a third lens group of a lens barrel constituting the optical system. The compensating lens is allowed to move within the third lens group and only in a direction perpendicular to the optical axis. A pulse motor mounted on a fixed barrel drives the compensating lens. The rotation of the pulse motor is converted into the rotation of an interlocking lever. The interlocking lever is a straight bar having an uncircular sectional configuration. A driving lever having approximately the same configuration as the sectional configuration of the interlocking lever is slidably inserted thereinto. The driving lever rotates together with the interlocking lever. One end of the driving lever penetrates through the frame of the third lens group, thus contacting the head portion of a pin which presses the compensating lens. When the driving lever rotates, the compensating lens is pressed through the pin. At a position opposed to the pin, a plate urged by a leaf spring supports the compensating lens. A mechanism for driving the compensatin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.