| 摘要 |
PURPOSE: An optical system for detecting a fingerprint and a bloodstain is provided to prevent different detection results from being obtained depending on the skill level of detectors by detecting and photographing a crime scene conveniently. CONSTITUTION: An optical system for detecting a fingerprint and a bloodstain includes a barrel(100), a DFOV(Dual Field Of View) lens unit, an optical zoom calibration ring(120), a filter unit(130), and an optical path fine adjustment ring(140). The DFOV lens unit has a first lens part and a second lens part which are arranged to control a relative position in the barrel in order to select a fixed focus for a short distance precision photographing and an infinity focus for a long distance detection. The optical zoom calibration ring controls a distance between the first lens part and the second lens part. The filter unit is arranged on an optical axis of the DFOV lens unit and is attachable or detachable, and transmits a specific wavelength. The optical path fine adjustment ring adjusts the optical path of the DFOV lens unit in order to correct aberration generated according to the wavelength of a detection target. |
