Testing device and testing method

A testing method for detecting a defect of a transparent specimen, including an ophthalmological lens, the testing method comprising:

• (a) an image acquisition step in which a plurality of stripe recordings is captured by an image acquisition device and are generated with the aid of an illumination device;
• (b) a reconstruction step, in which an overall image is reconstructed from the stripe recordings;
• and
• (c) a defect detection step in which a possible defect is detected from the overall image;
• wherein the illumination device for generating a stripe pattern includes a plurality of light sources which are linearly moved in a first direction by a first drive in the image acquisition step, and wherein, in order to capture the stripe pattern the acquisition duration of the image acquisition device is set in such a way that the light emitted by the linearly moved light sources is respectively detected as a light stripe.

A testing method for detecting a defect of a transparent specimen, including an ophthalmological lens, the testing method comprising:

• (a) an image acquisition step in which a plurality of stripe recordings is captured by an image acquisition device and is generated with the aid of an illumination device;
• (b) a reconstruction step in which an overall image is reconstructed from the stripe recordings;
• and
• (c) a defect detection step in which a possible defect is detected from the overall image;
• wherein the illumination device for generating a stripe pattern includes a plurality of light sources, arranged on a light carrier, which are linearly moved in a first direction in the image acquisition step, and wherein, in order to capture the stripe pattern an acquisition duration of the image acquisition device is set in such a way that the light emitted by the linearly moved light sources is respectively detected as a light stripe.

A testing method for detecting a defect of a transparent specimen, including an ophthalmological lens, the method comprising:

• (a) an image acquisition step in which a plurality of stripe recordings is captured by an image acquisition device and are generated with the aid of an illumination device;
• (b) a reconstruction step, in which an overall image is reconstructed from the stripe recordings;
• and
• (c) a defect detection step in which a possible defect is detected from the overall image;
• wherein the illumination device for generating a stripe pattern includes a plurality of point light sources, which are designed as LEDs and which are linearly moved in a first direction in the image acquisition step, and wherein, in order to capture the stripe pattern the acquisition duration of the image acquisition device is set in such a way that the light emitted by the linearly moved light sources is respectively detected as a light stripe.