公开(公告)号：US3620597A

公开(公告)日：1971-11-16

申请号：US3620597D

申请日：1968-07-15

Applicant: SANDERS ASSOCIATES INC

Inventor： SCHWARTZ JACOB ,  NAIMAN CHARLES S

IPC: G01J1/02 ,  G01J1/04 ,  G02B5/20 ,  G02F1/35 ,  G02F1/37 ,  G02F1/36 ,  G02B9/00 ,  G02C7/10

CPC classification number: G02B5/20 ,  G01J1/04 ,  G01J1/0418 ,  G01J2001/0285 ,  G02F1/3523 ,  G02F1/37

Abstract: Described herein is a method and apparatus for the nonlinear limiting of coherent radiant energy based upon the discovery of materials exhibiting nonlinear absorption. This discovery provides a method upon which the operation of apparatus for limiting, detecting and modulating coherent radiant energy is based.

公开(公告)号：US3612691A

公开(公告)日：1971-10-12

申请号：US3612691D

申请日：1969-02-07

Applicant: SANDERS ASSOCIATES INC

Inventor： SCHWARTZ JACOB

IPC: G01J9/02 ,  G01B9/02

CPC classification number: G01J9/02

Abstract: A monochromaticity detector is disclosed herein which comprises means for producing the diffraction or interference pattern of light received from a remote source and a reticle/detector array of a predetermined pattern. The spatial intensity pattern produced at the detectors is periodic if the incident light is monochromatic and nonperiodic for broadband light. The detector output signals are electronically processed to provide a binary indication of whether the incident energy is sufficiently periodic and thus sufficiently monochromatic to have originated in a laser as well as an indication of selected characteristics of the energy.

公开(公告)号：US3565531A

公开(公告)日：1971-02-23

申请号：US3565531D

申请日：1969-03-12

Applicant: SANDERS ASSOCIATES INC

Inventor： KANE GORDON ,  SCHWARTZ JACOB

IPC: G01B11/06 ,  G01B11/02

CPC classification number: G01B11/06

Abstract: APPARATUS FOR MEASURING THE THICKNESS OF AN OBJECT WITHOUT REQUIRING ANY PHYSICAL CONTACT COMPRISES TWO SOURCES OF RADIANT ENERGY DISPOSED AT A KNOWN FIXED DISTANCE FROM ONE ANOTHER, ONE ON EACH SIDE OF THE OBJECT WHICH IS TO BE MEASURED AND CENTROID STRACKING RECEIVERS DISPOSED IN A FIXED SPATIAL RELATIONSHIP WITH EACH OF THE SOURCES. RADIANT ENERGY FROM THE SOURCES IS DIRECTED TO EACH SIDE OF THE OBJECT TO BE MEASURED AND THE CENTROID OF ENERGY REFLECTED FROM EACH SIDE OF THE OBJECT IS TRACKED BY THE DETECTOR ELEMENTS WHICH PRODUCT OUTPUT SIGNALS WHICH REPRESENT THE ANGLE OF ARRIVAL OF THE REFLECTED ENERGY. THE DETECTOR OUTPUT SIGNALS ARE ELECTRONICALLY PROCESSED ACCORDING TO TRIGONOMETRIC PRINCIPLES SUCH AS TO PROVIDE A SIGNAL REPRESENTATIVE OF THE THICKNESS OF THE OBJECT BEING MEASURED.

公开(公告)号：US3513313A

公开(公告)日：1970-05-19

申请号：US3513313D

申请日：1968-12-06

Applicant: SANDERS ASSOCIATES INC

Inventor： SCHWARTZ JACOB

IPC: G01J5/00 ,  G01J5/10 ,  G05D23/26 ,  G01J1/44

CPC classification number: G01J5/50 ,  G05D23/26