FR347193A - Improvements to lantern lenses - Google Patents

Improvements to lantern lenses

Info

Publication number
FR347193A
FR347193A FR347193DA FR347193A FR 347193 A FR347193 A FR 347193A FR 347193D A FR347193D A FR 347193DA FR 347193 A FR347193 A FR 347193A
Authority
FR
France
Prior art keywords
lantern
lenses
lantern lenses
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
Samuel Groves Whitehouse
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR347193A publication Critical patent/FR347193A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR347193D 1904-10-18 1904-10-18 Improvements to lantern lenses Expired FR347193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR347193T 1904-10-18

Publications (1)

Publication Number Publication Date
FR347193A true FR347193A (en) 1905-02-27

Family

ID=1395844

Family Applications (1)

Application Number Title Priority Date Filing Date
FR347193D Expired FR347193A (en) 1904-10-18 1904-10-18 Improvements to lantern lenses

Country Status (1)

Country Link
FR (1) FR347193A (en)

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