公开(公告)号：US3573475A

公开(公告)日：1971-04-06

申请号：US3573475D

申请日：1969-08-28

Applicant: SAAB AB

Inventor： NORDLUND STEN ,  WETTERBRANDT BENGT

IPC: G01T5/02 ,  G02B17/00 ,  H01J3/14

CPC classification number: G01T5/02

Abstract: In spiral scanning apparatus for bubble chamber photographs, comprising an elongated plane mirror which is lengthwise inclined upwardly and outwardly to an axis about which it rotates, to reflect toward the axis light shone downwardly onto it, and a periscope which rotates to have its eye face the mirror and simultaneously moves axially to scan along it, superimposed slotted fixed and movable mask means in front of the periscope eye enable sensitivity and selectivity to be adjusted for different photographs.

公开(公告)号：US3572883A

公开(公告)日：1971-03-30

申请号：US3572883D

申请日：1969-08-27

Applicant: SAAB AB

Inventor： NORDLUND STEN ,  WETTERBRANDT BENGT ,  PERSSON LARS-JOHAN

IPC: G01T5/02 ,  G06K9/20 ,  G02B17/00

CPC classification number: G06K9/2009 ,  G01T5/02

Abstract: A scanner for bubble chamber photographs comprises a rotatable mirror-carrying outer member and an inner periscope member that rotates with and moves lengthwise relative to the outer member. The periscope member has accurately straight track surfaces along its length that parallel the rotational axis and lie in substantially perpendicular planes which respectively extend to opposite sides of said axis. Each of said tracks is engaged by rollers carried by the outer member at fixed axially spaced locations. Other rollers on the outer member engage the periscope member under radially inward bias to maintain the track surfaces guidingly engaged with the first mentioned rollers.