| 摘要 |
An optical unit includes: a first lens group; and a second lens group, which are arranged in order from an object side toward an image surface side, wherein the first lens group includes a first lens element, a first transparent body, and a second lens element, which are arranged in order from the object side toward the image surface side, and the second lens group includes a third lens element, a second transparent body and a fourth lens element, which are arranged in order from the object side toward the image surface side.
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