| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical device capable of achieving miniaturization. SOLUTION: The optical device 2 includes a first optical system 3 forming the image of a subject, a second optical system 4 forming an image different from the image of the subject, and a third optical system 5A synthesizing light incident from the first optical system 3 and light incident from the second optical system 4. The third optical system 5A includes a reflection part 52A having a plurality of reflection surfaces 521 arranged to be spaced. According to the wavelength of the incident light made incident on the third optical system 5A from the second optical system 4, the reflection surface 521 reflects the incident light and emits it from the third optical system 5A. COPYRIGHT: (C)2009,JPO&INPIT
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