FR61549E - Variable and colored phase contrast optical device - Google Patents

Variable and colored phase contrast optical device

Info

Publication number
FR61549E
FR61549E FR61549DA FR61549E FR 61549 E FR61549 E FR 61549E FR 61549D A FR61549D A FR 61549DA FR 61549 E FR61549 E FR 61549E
Authority
FR
France
Prior art keywords
variable
optical device
phase contrast
contrast optical
colored phase
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
Marcel Locquin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VENTE DES INSTR DE GEODESIE HE
Original Assignee
VENTE DES INSTR DE GEODESIE HE
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 by VENTE DES INSTR DE GEODESIE HE filed Critical VENTE DES INSTR DE GEODESIE HE
Application granted granted Critical
Publication of FR61549E publication Critical patent/FR61549E/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/06—Means for illuminating specimens
    • G02B21/08—Condensers
    • G02B21/14—Condensers affording illumination for phase-contrast observation

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR61549D 1950-04-26 1951-04-03 Variable and colored phase contrast optical device Expired FR61549E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1016752T 1950-04-26
FR61549T 1951-04-03

Publications (1)

Publication Number Publication Date
FR61549E true FR61549E (en) 1955-05-12

Family

ID=62495309

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1016752D Expired FR1016752A (en) 1950-04-26 1950-04-26 Variable and colored phase contrast optical device
FR61549D Expired FR61549E (en) 1950-04-26 1951-04-03 Variable and colored phase contrast optical device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR1016752D Expired FR1016752A (en) 1950-04-26 1950-04-26 Variable and colored phase contrast optical device

Country Status (1)

Country Link
FR (2) FR1016752A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5446540A (en) * 1992-10-30 1995-08-29 International Business Machines Corporation Method of inspecting phase shift masks employing phase-error enhancing

Also Published As

Publication number Publication date
FR1016752A (en) 1952-11-21

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