PROBLEM TO BE SOLVED: To provide a 2 plat imaging device having a good environment resistance and a good assembling property under keeping a size and quality for installing on the top edge part of an endoscopy and also keeping a simple prism structure.SOLUTION: A 2 plate imaging device includes the first prism 4, the second prism 5, a photo-decomposing coating reflecting a green color which is installed on the first intermediate surface 14, the first solid imaging element 2 which is adhered to the first out-reflecting surface 15 of the first prism 4 through the first sealing glass plate 8, and the second solid imaging element 3 which is adhered to the second out-reflecting surface 17 of the second prism 5 through the second sealing glass plate 9, wherein the first prism 4 and the second prism 5 are composed of one and the same glass material Ghaving a reflective index of 1.76 or less and an Abbe number of 52 or more, the first sealing glass plate 8 and the second sealing glass plate 9 comprise one and the same glass material Ghaving a lower UV-ray transmission than the glass material Gand the first prism 4, the second prism 5, while the first solid imaging element 2 and the second solid imaging element 3 are adhered with one another using an UV-ray curing optical adhesive agent having 0.15 or lower difference from a reflective index of the glass material G.
