| 摘要 |
The present invention is an imaging lens of which optical performance does not deteriorate even in a high temperature environment, various aberrations are well corrected, optical length is short, and back focus is sufficiently secured, the imaging lens comprising a first diaphragm S 1 , a first junction type compound lens, a second diaphragm S 2 , and a second junction type compound lens, characterized in that the first diaphragm, the first junction type compound lens, the second diaphragm and the second junction type compound lens are arranged in this sequence from an object side to an image side. The first junction type compound lens comprises a first lens L 1 , a second lens L 2 and a third lens L 3 , arranged in the sequence from the object side to the image side, and the second junction type compound lens comprises a fourth lens L 4 , a fifth lens L 5 and a sixth lens L 6 , arranged in this sequence from the object side to the image side. The first lens, the third lens, the fourth lens and the sixth lens are formed of a curable resin material. The second lens and the fifth lens are formed of a high softening temperature optical glass material.
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