Patent №
US 4,680,469
Granted
1987-07-14
Filed 1985
Owner
HITACHI LTD., 6 KANDA, SURUGADAI 4-CHOME, CHIYODA-KU, TOKYO, JAPAN, A CORP. OF JAPAN
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
06766272
Focusing device for a transmission type electron microscope displaying an enlarged image on a television monitor, in which the incident angle of the electron beam on the sample is varied with a constant frequency and the focal length of the objective electron lens is so controlled that there is no change between the image observed before change of the incident angle of the electron beam and that observed thereafter, wherein timing for changing the incident angle is set during the blanking intervals of the vertical synchronizing signal of the television so that fluctuations of the image can be clearly detected.
AI classification
Ownership
HITACHI LTD., 6 KANDA, SURUGADAI 4-CHOME, CHIYODA-KU, TOKYO, JAPAN, A CORP. OF JAPAN
assignment · 44450300
Assignors
NOMURA, SETSUO, ISAKOZAWA, SHIGETO
On an employer assignment, the assignors are typically the inventors.