Light exposure control device and apparatus

A method of exposing a photosensitive composition which comprises:

• i) providing a photosensitive composition;
• ii) providing a light exposure apparatus which comprises
• a) a light source;
• b) a light transmitter spaced from the light source, for transmitting light from the light source;
• c) a light intensity controlling component positioned between the light source and the light transmitter;
• the light intensity controlling component comprising a light regulator having a planar face positioned between the light source and the light transmitter;
• the light regulator comprising a plurality of opaque, planar members, having a continuously tapered width, positioned adjacent to one another on the planar face of the light regulator;
• each planar member being spaced from its adjacent planar members by a planar, substantially light transparent segment having a continuously tapered width, positioned on the planar face of the light regulator;
• said light regulator being mounted for translation such that a portion of the opaque members and portion of the substantially light transparent segments are adjustably positioned between the light source and the light transmitter;
• d) directing actinic light onto the photosensitive composition from the light source, through the light intensity controlling component and through the light transmitter, for a sufficient time, and at a sufficient light intensity to cause a change of a condition of the photosensitive composition.