| 摘要 |
PURPOSE:To obtain an imaging lens which is less affected by lens aberrations, has a wide angle of view and is of simple constitution by making the pitch of Dach mirror arrays disposed behind a multilens array sufficiently smaller than the diameter and pitch of the lens array. CONSTITUTION:Many Dach mirror arrays 7 are disposed behind a multilens array 1 consisting of many lenses 1', at the pitch P' sufficiently smaller than the diameter D and pitch P of the lenses 1'. The rays which emerge from the spot 5 on an object and pass through the lenses 1' are reflected twice by the Dach mirrors 7' and go backward in the extremely proximate positions. The incident rays and the reflected lays pass through roughly the same positions of the lenses 1' and form images in the original positions with virtually no influence by the aberrations and eccentricty of the lenses. Therefore the rays out from the respective parts of the object 10 form erecting images of equal magnifications in the same position as that of the object with the effect of the array 1 and the arrays 7. Thus the imaging element having a wide angle of view and simple constitution is obtained. |
