WO2008109420A3 - Two-sided corner-cube retroreflectors and methods of manufacturing the same - Google Patents

Two-sided corner-cube retroreflectors and methods of manufacturing the same Download PDF

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Publication number
WO2008109420A3
WO2008109420A3 PCT/US2008/055469 US2008055469W WO2008109420A3 WO 2008109420 A3 WO2008109420 A3 WO 2008109420A3 US 2008055469 W US2008055469 W US 2008055469W WO 2008109420 A3 WO2008109420 A3 WO 2008109420A3
Authority
WO
WIPO (PCT)
Prior art keywords
electromagnetic energy
sided corner
energy ray
square
full
Prior art date
Application number
PCT/US2008/055469
Other languages
French (fr)
Other versions
WO2008109420A2 (en
Inventor
Robert B Nilsen
Original Assignee
Technology Solutions & Inv Llc
Robert B Nilsen
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 Technology Solutions & Inv Llc, Robert B Nilsen filed Critical Technology Solutions & Inv Llc
Publication of WO2008109420A2 publication Critical patent/WO2008109420A2/en
Publication of WO2008109420A3 publication Critical patent/WO2008109420A3/en

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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

Abstract

In a retroreflective sheeting, and methods of formation thereof, the sheeting comprises a body of material, the body having a first surface and a second surface. A plurality of first full-square-sided corner-cube structures are on the first surface of the body, the first full-square-sided corner-cube structures each having three facets that lie along planes that are orthogonal to each other. A plurality of second full-square-sided corner-cube structures are on the second surface of the body, the second full-square-sided corner-cube structures each having three facets that lie along planes that are orthogonal to each other. The body is constructed and arranged to be transparent to incident electromagnetic energy at a range of wavelengths and to have a thickness so that an incident electromagnetic energy ray that is incident at one of the first and second surfaces enters the body, and is redirected by both the first surface and the second surface so that both the first surface and the second surface contribute to retroreflection of the incident electromagnetic energy ray, and exits from the one of the first and second surfaces at which the incident electromagnetic energy ray was incident to emit a retroreflected electromagnetic energy ray of the incident electromagnetic energy ray.
PCT/US2008/055469 2007-03-02 2008-02-29 Two-sided corner-cube retroreflectors and methods of manufacturing the same WO2008109420A2 (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US90466807P 2007-03-02 2007-03-02
US60/904,668 2007-03-02
US90672507P 2007-03-13 2007-03-13
US60/906,725 2007-03-13
US95523407P 2007-08-10 2007-08-10
US60/955,234 2007-08-10
US97911907P 2007-10-11 2007-10-11
US60/979,119 2007-10-11
US98165107P 2007-10-22 2007-10-22
US60/981,651 2007-10-22

Publications (2)

Publication Number Publication Date
WO2008109420A2 WO2008109420A2 (en) 2008-09-12
WO2008109420A3 true WO2008109420A3 (en) 2008-10-23

Family

ID=39732862

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/055469 WO2008109420A2 (en) 2007-03-02 2008-02-29 Two-sided corner-cube retroreflectors and methods of manufacturing the same

Country Status (2)

Country Link
US (2) US7506987B2 (en)
WO (1) WO2008109420A2 (en)

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Also Published As

Publication number Publication date
US20090237791A1 (en) 2009-09-24
WO2008109420A2 (en) 2008-09-12
US7506987B2 (en) 2009-03-24
US20080212182A1 (en) 2008-09-04
US7703931B2 (en) 2010-04-27

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