FR663254A - Improvements to interferometers for testing optical elements - Google Patents

Improvements to interferometers for testing optical elements

Info

Publication number
FR663254A
FR663254A FR663254DA FR663254A FR 663254 A FR663254 A FR 663254A FR 663254D A FR663254D A FR 663254DA FR 663254 A FR663254 A FR 663254A
Authority
FR
France
Prior art keywords
interferometers
optical elements
testing optical
testing
elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
John William Hasselkus
Owen George Hay
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR663254A publication Critical patent/FR663254A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
FR663254D 1928-01-03 1928-10-31 Improvements to interferometers for testing optical elements Expired FR663254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB663254X 1928-01-03

Publications (1)

Publication Number Publication Date
FR663254A true FR663254A (en) 1929-08-19

Family

ID=10491095

Family Applications (1)

Application Number Title Priority Date Filing Date
FR663254D Expired FR663254A (en) 1928-01-03 1928-10-31 Improvements to interferometers for testing optical elements

Country Status (1)

Country Link
FR (1) FR663254A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965607C (en) * 1949-03-30 1957-06-13 Prec Mecanique Interference microscope

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965607C (en) * 1949-03-30 1957-06-13 Prec Mecanique Interference microscope

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