| 摘要 |
[Object] To provide an optical unit and an image pickup apparatus that are capable of suppressing a variation in focus position even in a case of a high pixel count and realizing an image pickup optical system that is compact and inexpensive and has a high resolution and high heat-resistance, while suppressing an increase of the number of parts. [Solving Means] An optical unit (100) includes a first lens group (110) and a second lens group (120), the first lens group (110) and the second lens group (120) being sequentially arranged from an object side to an image plane side, the first lens group (110) including a first lens element (111), a transparent body (112), and a second lens element (113), the first lens element (111), the transparent body (112), and the second lens element (113) being sequentially arranged from the object side to the image plane side, the second lens group (120) including only a third lens element (121). |
