| 摘要 |
Disclosed is an image acquisition apparatus equipped with a wedge optical window. The image acquisition apparatus includes: a wedge optical window in which a thickness of an incident plane of light constantly increases as the stage goes from the first stage to the second stage; and an image acquisition module for acquiring an image from the light input through the wedge optical window. Here, the wedge optical window may be configured such that a side section thereof has a ladder shape, and may be configured such that light is input to the incident plane in a diagonal direction and an incident angle of light is formed in a direction of the first stage and an irradiation angle of the light is formed in a direction of the second stage. According to the image acquisition apparatus equipped with the wedge optical window, because the optical window has a ladder shape when viewed from a side by gradually increasing the thickness of the optical window, the incident angle with respect to the incident surface is reduced such that the irradiation angle of the light decreases as compared with the related art even when light having a large incident angle is input in a direction oblique from the section of the optical window. That is, because the irradiation angle is reduced, it is unnecessary to locate the image acquisition module far. Further, the volume of the image acquisition apparatus (1) is reduced, the equipment can become small sized and light weight, and a mobility of the apparatus can be improved. Meanwhile, a necessary area of the optical window can be reduced in inverse-proportion to a cosine of the reduced incident angle. |
