Zoom lens and image pickup apparatus including a deformable mirror

摘要

A folded optical zoom lens and an image pickup apparatus including the same are provided. The zoom lens includes a first reflection plate and a second reflection plate having reflection surfaces facing each other; a light incidence region disposed around the second reflection plate; a light exit region disposed in a hole in a center portion of the first reflection plate; and a mirror, which is disposed around the second reflection plate and reflects light incident via the light incidence region toward the first reflection plate. The mirror is configured to change a length of a an optical path of light incident via the light incidence region, reflected between the first reflection plate and the second reflection plate, and exiting the zoom lens via the light exit region.

主权项

1. A zoom lens comprising:
a first reflection surface; a second reflection surface facing the first reflection surface; a light incident region around an outer circumference of the second reflection surface; a light exit region in a hole formed in a center of the first reflection surface; and a deformable mirror disposed around an outer circumference of the first reflection surface and configuration to reflect light incident from the light incidence region toward the second reflection surface, the deformable mirror comprising a reflection surface that is mechanically or electrically deformable; wherein the first reflection surface and the second reflection surface form an optical path, wherein light incident via the light incidence region is reflected between the first reflection surface and the second reflection surface until the light exits the zoom lens via the light exit region; and wherein the deformable mirror is configured to change a length of the optical path between the light incidence region and the light exit region.