| 摘要 |
<p>A multi-LED light combining and imaging optical system comprises a light combining part and an imaging part. The light combining part comprises more than 3 LED lamp balls (2). A condensing device (3) condensing the luminous flux of the LED lamp ball (2) into 5-15° is provided in front of each LED lamp ball (2) correspondingly. All the condensing devices (3) constitute a condensing device group, in front of which a light combining lens (4) is provided. A light through hole (6) is provided between the light combining part and the imaging part. The imaging part is an imaging lens (7). The distance between the imaging lens (7) and the light through hole (6) is d, the focal distance of the imaging lens (7) is f, and the diameter of the imaging lens (7) is Phi, wherein f<d<2f, Phi=2*d*sintheta, 10°<=theta<=25°. The light of the light source is used to image for the imaging lens (7) after being combined by the light combining part. A clear imaging is realized in the entire optical system due to the position relation between the imaging lens (7) and the light through hole (6).</p> |
