OPTICAL DEVICE AND METHOD OF MANUFACTURING THE SAME

摘要

Provided is an optical device capable of adjusting astigmatism due to a manufacturing error to attain excellent imaging performance while securing optical efficiency. The optical device includes: an imaging optical system including multiple lens arrays in an optical axis direction, the multiple lens arrays each including multiple lens units arrayed in a first direction perpendicular to the optical axis direction; a light source including multiple light-emitting points arrayed in the first direction; and first changing means for changing a first distance in the optical axis direction between the light source and one of the lens arrays, closest to the light source. The imaging optical system is configured to image the light source at equal magnification as an erecting image within a first cross-sectional plane, and image, within a second cross-sectional plane perpendicular to the first direction, the light source at a different magnification than at the first cross-sectional plane.

主权项

1. An optical device, comprising:
an imaging optical system comprising multiple lens arrays in an optical axis direction, the multiple lens arrays each comprising multiple lens units arrayed in a first direction perpendicular to the optical axis direction; a light source comprising multiple light-emitting points arrayed in the first direction; and first changing means for changing a first distance in the optical axis direction between the light source and one of the multiple lens arrays, which is closest to the light source, the imaging optical system being configured to: image the light source at equal magnification as an erecting image within a first cross-sectional plane including the optical axis direction and the first direction; and image, within a second cross-sectional plane perpendicular to the first direction, the light source at a magnification different from the magnification within the first cross-sectional plane.