GB330080A - Improvements in the manufacture of glass reflectors - Google Patents

Improvements in the manufacture of glass reflectors

Info

Publication number
GB330080A
GB330080A GB1293629A GB1293629A GB330080A GB 330080 A GB330080 A GB 330080A GB 1293629 A GB1293629 A GB 1293629A GB 1293629 A GB1293629 A GB 1293629A GB 330080 A GB330080 A GB 330080A
Authority
GB
United Kingdom
Prior art keywords
protuberances
manufacture
rear surface
hemispherical
glass sheet
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
GB1293629A
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.)
PERCIVAL SWAN
Original Assignee
PERCIVAL SWAN
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 PERCIVAL SWAN filed Critical PERCIVAL SWAN
Priority to GB1293629A priority Critical patent/GB330080A/en
Publication of GB330080A publication Critical patent/GB330080A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

330,080. Swan, P. April 26, 1929. Reflectors of the kind comprising a glass sheet having its rear surface studded with rounded protuberances have the protuberances 3 of hemispherical form with the centres located approximately in the rear surface of the sheet. These protuberances are closely arranged in parallel rows in two directions at right-angles. The ratio of the thickness of the glass sheet and the radius of the hemispherical protuberances is between unity and two to one. Between these protuberances smaller protuberances of similar form may be placed. Re. flectors of this construction may be used in advertising or similar signs.
GB1293629A 1929-04-26 1929-04-26 Improvements in the manufacture of glass reflectors Expired GB330080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1293629A GB330080A (en) 1929-04-26 1929-04-26 Improvements in the manufacture of glass reflectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1293629A GB330080A (en) 1929-04-26 1929-04-26 Improvements in the manufacture of glass reflectors

Publications (1)

Publication Number Publication Date
GB330080A true GB330080A (en) 1930-06-05

Family

ID=10013852

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1293629A Expired GB330080A (en) 1929-04-26 1929-04-26 Improvements in the manufacture of glass reflectors

Country Status (1)

Country Link
GB (1) GB330080A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450459A (en) * 1965-10-24 1969-06-17 Walter F Haggerty Retroreflective device
US5450236A (en) * 1990-02-07 1995-09-12 Storra Aktiebolag Reflector, especially for display signs and road signs and a sign manufactured thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450459A (en) * 1965-10-24 1969-06-17 Walter F Haggerty Retroreflective device
US5450236A (en) * 1990-02-07 1995-09-12 Storra Aktiebolag Reflector, especially for display signs and road signs and a sign manufactured thereof

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