公开(公告)号：CA2282084C

公开(公告)日：2005-01-11

申请号：CA2282084

申请日：1999-09-10

Applicant: WANG SANYI ,  JACKSON STUART A ,  ATRAZHEVA ELENA ,  HUDDA KARIMA ,  MERCER JOHN R

Inventor： WANG SANYI ,  JACKSON STUART A ,  ATRAZHEVA ELENA ,  HUDDA KARIMA ,  MERCER JOHN R

IPC: G01J1/50

Abstract: A radiation indicator device for use in indicating exposure to ultraviolet -B radiation. The device includes a radiation sensitive mixture which is selectively responsive to ultraviolet radiation having a wavelength substantially within or shorter than the range of wavelengths of ultraviolet-B radiation. The radiation sensitive mixture includes an organic halogen constituent capable of producing at leas t one acidic product upon exposure to ultraviolet radiation and an indicator constituent capable of producing a change in colour in response to a change in concentration of the acidic product. The radiation sensitive mixture has a first colour representing a relatively low concentration of the acidic product and has a second colour representing a relatively high concentration of the acidic product. The first colour is visually distinguishable from the second colour. The device may also include a graphic pattern interposed amongst the radiation sensitive mixture, which graphic pattern has a graphic pattern colour substantially identical to either the first colour or the second colour.

公开(公告)号：CA2282084A1

公开(公告)日：2001-03-10

申请号：CA2282084

申请日：1999-09-10

Applicant: JACKSON STUART A ,  HUDDA KARIMA ,  ATRAZHEVA ELENA ,  MERCER JOHN R ,  WANG SANYI

Inventor： JACKSON STUART A ,  HUDDA KARIMA ,  ATRAZHEVA ELENA ,  MERCER JOHN R ,  WANG SANYI

IPC: G01J1/50

Abstract: A radiation indicator device for use in indicating exposure to ultraviolet -B radiation. The device includes a radiation sensitive mixture which is selectively responsive to ultraviolet radiation having a wavelength substantially within or shorter than the range of wavelengths of ultraviolet-B radiation. The radiation sensitive mixture includes an organic halogen constituent capable of producing at leas t one acidic product upon exposure to ultraviolet radiation and an indicator constituent capable of producing a change in colour in response to a change in concentration of the acidic product. The radiation sensitive mixture has a first colour representing a relatively low concentration of the acidic product and has a second colour representing a relatively high concentration of the acidic product. The first colour is visually distinguishable from the second colour. The device may also include a graphic pattern interposed amongst the radiation sensitive mixture, which graphic pattern has a graphic pattern colour substantially identical to either the first colour or the second colour.