FR688280A - Three-power lens - Google Patents

Three-power lens

Info

Publication number
FR688280A
FR688280A FR688280DA FR688280A FR 688280 A FR688280 A FR 688280A FR 688280D A FR688280D A FR 688280DA FR 688280 A FR688280 A FR 688280A
Authority
FR
France
Prior art keywords
power lens
lens
power
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)
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.)
COMM OUVRIERS LUNETIERS SOC IN
PETHE EPARVIER
Original Assignee
COMM OUVRIERS LUNETIERS SOC IN
PETHE EPARVIER
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 COMM OUVRIERS LUNETIERS SOC IN, PETHE EPARVIER filed Critical COMM OUVRIERS LUNETIERS SOC IN
Application granted granted Critical
Publication of FR688280A publication Critical patent/FR688280A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR688280D 1930-01-15 1930-01-15 Three-power lens Expired FR688280A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR688280T 1930-01-15

Publications (1)

Publication Number Publication Date
FR688280A true FR688280A (en) 1930-08-21

Family

ID=9026644

Family Applications (1)

Application Number Title Priority Date Filing Date
FR688280D Expired FR688280A (en) 1930-01-15 1930-01-15 Three-power lens

Country Status (1)

Country Link
FR (1) FR688280A (en)

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