Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1979-03-15
1981-12-08
Hix, L. T.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
354 31, 354 60E, 250204, 356 1, 356 4, 356 28, G03B 1318, G01J 136, G01C 308, G01P 336
Patent
active
043044743
ABSTRACT:
The invention relates to an arrangement for automatically focusing the image of an object, obtained by an objective lens system, onto an image plane by adjustment of the distance of the objective lens system or a portion thereof from such image plane. Two optical devices which are mutually offset transversely to the optical axis, are provided for obtaining auxiliary images of the object, which are photoelectrically analyzed with respect to one another. The minimum difference signal therebetween indicates the congruency of the two auxiliary images and supplies an adjustment criterion for a device operative to correspondingly adjust the objective distance. The invention utilizes two CTD image sensors to analyze the auxiliary images with the read-out signals being supplied to a differential amplifier and subsequently rectified and integrated. The read-out signals of one sensor are modified, as to their phase state with respect to the output signals of the other sensor, by adjusting movement of the relevant optical device, or by means of a delay element, which can be adjusted in step-like fashion. The phase state associated with the minimal difference signal represents the setting criterion. The invention can be utilized in photographic cameras and the like and, in particular, those with additional range and flash or speed facilities.
REFERENCES:
patent: 3617128 (1971-11-01), Harvey
patent: 3844658 (1974-10-01), Gela et al.
patent: 3945023 (1976-03-01), Stauffer
patent: 4004852 (1977-01-01), Pentecost
patent: 4059756 (1977-11-01), Wilwerding
patent: 4171155 (1979-10-01), Jyojiki et al.
patent: 4173402 (1979-11-01), Hurike et al.
Hix L. T,.
Perkey William B.
Siemens Aktiengesellschaft
LandOfFree
Arrangement for focusing the image of an object onto an image pl does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement for focusing the image of an object onto an image pl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for focusing the image of an object onto an image pl will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-565436