LENS UNIT, COMPOUND EYE OPTICAL UNIT, AND COMPOUND EYE IMAGING DEVICE

PROBLEM TO BE SOLVED: To provide a lens unit that suppresses degradation of an image formation performance of a local facet optical system, resulting from dependency upon an environmental temperature, and to enable highly accurate photographing.SOLUTION: A lens unit comprises: a metal-made intermediate stop 25 that includes a resin-made first lens array 21 on an object side and a resin-made second lens array 22 on an image side, and is fixed by being sandwiched between the first and second lens arrays 21 and 22; a metal-made front stop 29 that is fixed on the object side of the first lens array 21; and a metal-made rear stop 30 that is fixed on the image side of the second lens array. Shear adhesion strength of a first adhesion part 24a between the first lens array 21 and the intermediate stop 25 is smaller than that of a second adhesion part 24b between the second lens array 22 and the intermediate stop 25, or shear adhesion strength of third adhesion part 26 between the second lens array 22 and the rear stop 30 is smaller than that of a fourth adhesion part 27 between the first lens array 21 and the front stop 29.SELECTED DRAWING: Figure 2 【課題】環境温度に依存して局所的な個眼光学系の結像性能が劣化することを抑制して高精度の撮像を可能にするレンズユニットを提供する。【解決手段】物体側に樹脂製の第１レンズアレイ２１と、像側に樹脂製の第２レンズアレイ２２とを含み、第１及び第２レンズアレイ２１，２２の間に挟まれて固定される金属製の中間絞り２５と、第１レンズアレイ２１の物体側に固定される金属製の前絞り２９と、第２レンズアレイの像側に固定される金属製の後絞り３０と、を備え、第１レンズアレイ２１と中間絞り２５との間の第１接着部２４ａのせん断接着強度は、第２レンズアレイ２２と中間絞り２５との間の第２接着部２４ｂのせん断接着強度より小さい、又は第２レンズアレイ２２と後絞り３０との間の第３接着部２６のせん断強度は、第１レンズアレイ２１と前絞り２９との間の第４接着部２７のせん断接着強度より小さい。【選択図】図２