Optical projection device comprises light source provided with two light-emitting diode chips, and light source has illumination surface formed by radiation emission surfaces of light-emitting diode chips

摘要

The optical projection device comprises a light source (1) provided with two light-emitting diode chips. The light source has an illumination surface formed by the radiation emission surfaces of the light-emitting diode chips, which are energized when the light source is in operation and by the optical distances between the radiation emission surfaces of the energized light-emitting diode chip. The illumination surface has an aspect ratio formed by the ratio of the length of the illumination surface to the width of the illumination surface. The projection device is provided for representing an image (200) having another aspect ratio formed by the ratio of the length (L2) of the image to the width (B2) of the image, and the two aspect ratios are adapted to each other.