Demonstration device for photochromic lenses

A demonstration device for demonstrating at least one thermally-reversible characteristic of an optical article having at least one photochromic material, the demonstration device comprising:

• a housing having a sidewall defining an interior, wherein at least a portion of the sidewall is transparent to allow viewing of the housing interior from the outside of the housing through the sidewall;
• an inspection platform within the interior of the housing configured for supporting at least a portion of the optical article;
• at least one ultraviolet light source configured to radiate ultraviolet light into the interior of the housing;
• at least one inspection light source configured to illuminate at least a portion of the interior of the housing;
• and
• at least one heating device configured to heat at least a portion of the interior of the housing,
• wherein the at least one heating device comprises at least one heat source and at least one fan.