NL7712044A - Retroreflector with angled light transmitting sheet - with refractive front surface and rear surface with reflecting units - Google Patents

Retroreflector with angled light transmitting sheet - with refractive front surface and rear surface with reflecting units

Info

Publication number
NL7712044A
NL7712044A NL7712044A NL7712044A NL7712044A NL 7712044 A NL7712044 A NL 7712044A NL 7712044 A NL7712044 A NL 7712044A NL 7712044 A NL7712044 A NL 7712044A NL 7712044 A NL7712044 A NL 7712044A
Authority
NL
Netherlands
Prior art keywords
front surface
retroreflector
sheet
transmitting sheet
light transmitting
Prior art date
Application number
NL7712044A
Other languages
Dutch (nl)
Original Assignee
Ferro Corp
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 Ferro Corp filed Critical Ferro Corp
Priority to NL7712044A priority Critical patent/NL7712044A/en
Publication of NL7712044A publication Critical patent/NL7712044A/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G02B5/122—Reflex reflectors cube corner, trihedral or triple reflector type
    • G02B5/124—Reflex reflectors cube corner, trihedral or triple reflector type plural reflecting elements forming part of a unitary plate or sheet
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/553—Low discrete bodies, e.g. marking blocks, studs or flexible vehicle-striking members

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

Retroreflector e.g. for road marking comprises light-transmitting sheet, pref. of organic polymeric material, in an angular position as a normal at one point of the sheet is at 5-85 degrees to an incident light beam. The sheet has parallel front and rear surfaces, of which the front surface is smooth and refractive, and the rear surface is provided with reflective units. At least some of the reflective units comprises three mutually perpendicular surfaces defining a trihedral angle of a rectangular parallel piped and located relative to the front surface with the diagonal of the parallel piped at 15 degrees to incident light refracted by the frong surface. Arrangement provides greater retroreflective capacity for wider angles of incidence.
NL7712044A 1977-11-01 1977-11-01 Retroreflector with angled light transmitting sheet - with refractive front surface and rear surface with reflecting units NL7712044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7712044A NL7712044A (en) 1977-11-01 1977-11-01 Retroreflector with angled light transmitting sheet - with refractive front surface and rear surface with reflecting units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7712044A NL7712044A (en) 1977-11-01 1977-11-01 Retroreflector with angled light transmitting sheet - with refractive front surface and rear surface with reflecting units

Publications (1)

Publication Number Publication Date
NL7712044A true NL7712044A (en) 1979-05-03

Family

ID=19829462

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7712044A NL7712044A (en) 1977-11-01 1977-11-01 Retroreflector with angled light transmitting sheet - with refractive front surface and rear surface with reflecting units

Country Status (1)

Country Link
NL (1) NL7712044A (en)

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
A85 Still pending on 85-01-01
BB A search report has been drawn up
BC A request for examination has been filed
AK Correction of former applications already laid open

Free format text: IN PAT.BUL.3/85,PAGE 290 THE NUMBER SHOULD BE DELETED

BV The patent application has lapsed