Method and device for carrying out optical pick up

A method for scanning an object with a scanner having at least two two-dimensional electronic image converters, at least one optical element imaging the object on the electronic image converters, and first and second beam sources for illuminating the object and a carrier, wherein the object comprises structure within the oral cavity of a patient, comprising the steps of:

• a) inserting a portion of said carrier into the oral cavity of a patient;
• b) illuminating said object with said first beam source at a first illumination level and substantially simultaneously obtaining a first image of the object with a first electronic image converter at a first level of received beam energy;
• c) illuminating said object with said second beam source at a second illumination level and substantially simultaneously obtaining a second image of said object with a second electronic image converter at a second level of received beam energy different from said first level;
• d) wherein said steps b) and c) are performed in succession to thereby obtain two consecutive images of the object with said electronic image converters at different amounts of received beam energy.

A method for scanning an object with a scanner having at least one two-dimensional electronic image converter, at least one optical element imaging the object on the electronic image converters, and first and second beam sources for illuminating the object and a carrier, wherein the object comprises structure within the oral cavity of a patient, comprising the steps of:

• a) inserting a portion of said carrier into the oral cavity of a patient;
• b) illuminating said object with said first beam source with radiation predominantly in a first portion of the electromagnetic spectrum and substantially simultaneously obtaining a first image of the object with said at least one electronic image converter;
• c) illuminating said object with said second beam source at a second illumination level with radiation predominantly in a second portion of the electromagnetic spectrum different from said first portion and substantially simultaneously obtaining a second image of said teeth with said at least one electronic image converter;
• d) wherein said steps b) and c) are performed in succession to thereby obtain two consecutive images of the object with said at least one electronic image converter at two different portions of the electromagnetic spectrum.