Retroreflective articles having light-transmissive surfaces

Details Retroreflective articles having light-transmissive surfaces Retroreflective articles having light-transmissive surfaces

1989-03-31

1992-06-16

Ben, Loha

Optical: systems and elements

Signal reflector

3-corner retroreflective

359530, G02B 5122

Patent

active

051229021

ABSTRACT:
Retroreflective elements, such as cube-corner elements or right triangular prisms containing cube-corners, are arranged on articles to define separation surfaces between the elements; in another embodiment, the elements are truncated cube-corners incorporating similar surfaces on the elements themselves. If the surfaces are transparent they will transmit light through the article, rendering it partially transparent and partially retroreflective. The surfaces may be flat or curved. Standard grooving techniques may be employed to construct the elements, using mold cutting tools having flattened or curved tips instead of V-shaped tips; alternatively, electroformed molds may be lapped to include the shape required to produce surfaces. The elements and surfaces may be embodied in sheeting materials or internally illuminated signs.

REFERENCES:
patent: 2818500 (1957-12-01), Franck
patent: 3005382 (1961-10-01), Weber
patent: 3712706 (1973-01-01), Stamm
patent: 3779629 (1973-12-01), Green
patent: 3790431 (1974-02-01), Tung
patent: 3833285 (1974-09-01), Heenan
patent: 3924929 (1975-12-01), Holmen et al.
patent: 4005538 (1977-02-01), Tung
patent: 4025159 (1977-05-01), McGrath
patent: 4073568 (1978-02-01), Heasley
patent: 4208090 (1980-06-01), Heenan
patent: 4243618 (1981-01-01), Van Arnam
patent: 4349598 (1982-09-01), White
patent: 4588258 (1986-05-01), Hoopman
patent: 4672089 (1987-06-01), Pricone et al.
patent: 4775219 (1988-10-01), Appledorn et al.
"Transflectors Take Off at U.S. Airports".

Affiliated with

Also associated with

Rating

Retroreflective articles having light-transmissive surfaces does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Retroreflective articles having light-transmissive surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retroreflective articles having light-transmissive surfaces will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1758269