COLORED PAINT WITH FLUORESCENCE

Number: 20180307128
Published: 2018-10-25
Filed: 2017-04-21
Assignee: Disney Enterprises, Inc.
Inventors: Joseph; Daniel M.; Johnson; Steven A.
CPC: C09D7/42; C09D5/32; G03B21/60; C09D5/22; G03B21/567; G03B21/204; C09D133/06; G03B21/005; C09K11/025
Verdict: Medium Hardware
Source: Google Patents · FreePatentsOnline

The keeper's note

Fluorescent paint material for props/effects.

Abstract

A paint composition comprises a carrier material, a plurality of ambient light absorbing pigment particles dispersed in the carrier material comprising a component that absorbs predetermined visible wavelengths, and a plurality of fluorescent pigment particles dispersed in the carrier material, wherein the fluorescent pigment particles emit a first color and the paint composition emits a second color different from the first color when illuminated by an ultraviolet light source. The paint composition can act as a video projection surface with usable screen gain.

Background

BACKGROUND

In many fields, it is desirable to have paint that appears as one color under a first light source and appears as a second color under a second light source. For example, star fields (such as those in planetariums and amusement park rides) ideally use a black background on which the star field can be projected. However, black backgrounds typically provide little to no screen gain, making projected star fields difficult to see. Screen gain measures the reflectivity of a screen or surface, normalized to a standard white (magnesium oxide) board. Screens with a screen gain of 1.0 have the same reflectivity as the standard, screens with a screen gain of less than 1.0 have lower reflectivity than the standard board, and screens with a screen gain of greater than 1.0 have a reflectivity that is greater than the standard board. Non-black backgrounds (such as grey) can be used in order to enhance the brightness of the projected stars by providing surfaces with higher screen gain than typical black backgrounds. However, non-black backgrounds may be perceptible to observers, thus destroying the illusion of a realistic star field with indeterminate depth.

Fluorescent paints have been used to create backgrounds of various colors. Many traditional fluorescent paints require a two-step application process. For example, a base coat having the desired base color is applied to a surface or substrate first. A second coat, comprising a colorless carrier material as well as

Claims

1. A paint composition comprising: a carrier material; a plurality of ambient light absorbing pigment particles dispersed in the carrier material comprising a component that absorbs predetermined visible wavelengths; and a plurality of fluorescent pigment particles dispersed in the carrier material; wherein the fluorescent pigment particles emit a first color and the paint composition emits a second color different from the first color when illuminated by an ultraviolet light source. 10. A paint comprising: a binder material; a plurality of ambient light absorbing pigment particles dispersed throughout the binder material; and a plurality of fluorescent pigment particles dispersed throughout the binder material, wherein the paint appears black under non-directional light and exhibits a screen gain of between 0.10 and 0.30 under directional light. 15. 14. A projection system comprising: a directional light source; and a projection surface, the projection surface coated with a paint composition comprising: a binder material; a plurality of visible light absorptive particles dispersed throughout the binder material; and a plurality of fluorescent pigment particles dispersed throughout the binder material, wherein the paint composition absorbs ambient non-directional visible light and the paint composition emits white light under emissions from an ultraviolet light source.