Optical: systems and elements – Light control by opaque element or medium movable in or...
Patent
1995-09-19
1998-04-21
Dzierzynski, Paul M.
Optical: systems and elements
Light control by opaque element or medium movable in or...
359559, 359562, 356237, G01N 2100, G02B 2746
Patent
active
057424225
ABSTRACT:
A Fourier mask includes a base plate, an aperture plate having a pair of cross hairs fixedly mounded on the base plate and a pair of four bar linkages, each four bar linkage being made up of a pair of parallel cross bars and a pair of parallel mask bars pivotally interconnected end-to-end in a closed loop configuration. Each cross bar in each four bar linkage is pivotally mounted on the base plate, the four bar linkages being arranged on the base plate such that the mask bars in one four bar linkage are at right angles to the mask bar in the other four bar linkage and each pair of parallel mask bars is symmetrically disposed about one of the cross hairs. By pivotally moving either or both sets of cross bars on the base plate, the spacing between the parallel mask bars in either a both sets of mask bars can be changed as desired.
REFERENCES:
patent: 2844069 (1958-07-01), Azarraga
patent: 3409872 (1968-11-01), Hogg et al.
patent: 3537777 (1970-11-01), Flynn
patent: 3614232 (1971-10-01), Mathisen
patent: 3639039 (1972-02-01), Rhodes, Jr.
patent: 3658420 (1972-04-01), Axelrod
patent: 3860328 (1975-01-01), Firth
patent: 4330775 (1982-05-01), Iwamoto et al.
patent: 4360269 (1982-11-01), Iwamoto et al.
patent: 4806744 (1989-02-01), Liu et al.
patent: 4895446 (1990-01-01), Maldari et al.
patent: 5172000 (1992-12-01), Scheff et al.
patent: 5317380 (1994-05-01), Allemand
patent: 5475459 (1995-12-01), Matsubara et al.
Dzierzynski Paul M.
Inspex Inc.
Jr. John Juba
LandOfFree
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