| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration-isolated infrared optical system which has a high variable power ratio and allows the use of a vibration isolating function at any focal length and is capable of aperture matching, and an infrared imaging apparatus including the same.SOLUTION: The vibration-isolated infrared optical system includes, in order from the object side, a converter lens CL (CL1) and an infrared imaging optical system LG (LG1). The converter lens CL1 comprises two positive lens groups GF1 and GR1 having positive refracting powers, which are arranged along an optical axis, and is configured so that an intermediate image is formed between the two positive lens groups GF1 and GR1. The entire converter lens CL1 is inverted by rotation around a rotation center axis O orthogonal to the optical axis, whereby switching between a function as a tele converter and a function as a wide converter is possible. The converter lens CL1 is swung around the rotation center axis O, whereby image blur correction is possible. |
