Iridescent film with multidirectional variable optical stripes

• US 6,466,374 B2
• Filed: 07/13/2001
• Issued: 10/15/2002
• Est. Priority Date: 12/20/2000
• Status: Expired due to Fees

• Current Assignee: Fong Teng Technology Co., Ltd.
• Original Assignee: Fong Teng Technology Co., Ltd.
• Inventors: Chuang, H. L.
• Primary Examiner(s): Mahoney, Christopher
• Assistant Examiner(s): Cruz, Magda
• Application Number:
  US09/903,550
• Publication Number:
  US 20020076526A1
• Time in Patent Office: 459 Days
• Field of Search: 359/591, 359/592, 359/593, 359/596, 359/597, 359/609, 359/613
• US Class Current: 359/592
• CPC Class Codes: B32B 7/023 Optical properties
• CPC Class Codes: G02B 1/10 Optical coatings produced by application to, or surface treatment of, optical elements G02B1/08 takes precedence
• CPC Class Codes: Y10T 428/24479 including variation in thickness
• CPC Class Codes: Y10T 428/24942 including components having same physical characteristic in differing degree

Abstract

Iridescent film with multidirectional variable optical stripes, including multiple very thin laminated films. The films are respectively made of different transparent plastic materials with different refractive indices. At least one surface of the laminated films has numerous different stripes with different directions or pitches. When seen in different directions, the stripes of the iridescent film can reflect different colors and shapes of bright stripes. In addition, very fine bright colorful points are evenly distributed in the stripes to create a unique and tender vision.

Claims

1. Iridescent film with multidirectional variable optical stripes, comprising multiple very thin laminated films, the adjacent films being made of transparent plastic materials with different refractive indices, said iridescent film being characterized in that at least one surface of the laminated films has numerous stripes with different directions or pitches, whereby when seen in different directions, the stripes of the iridescent film can reflect different colors and shapes of bright stripes.

2. Iridescent film as claimed in claim 1, wherein the plastic material includes polyethylene, polypropylene, polyvinyl chloride or polystyrene.

3. Iridescent film as claimed in claim 2, wherein at least one backing material is attached to one face of the laminated films.

4. Iridescent film as claimed in claim 1, wherein the pitches are within 0.05-0.5 mm.

5. Iridescent film as claimed in claim 4, wherein at least one backing material is attached to one face of the laminated films.

6. Iridescent film as claimed in claim 1, wherein at least one backing material is attached to one face of the laminated films.

7. Iridescent film as claimed in claim 6, wherein the backing material is made of PP, PE, PVC, PET or PS sheet or film.