M174_F-theta

F-theta lens are commonly used in laser scanning systems that require a flat image plane and high resolution. By introducing a specific amount of barrel distortion in the lens, the image height of the F-Theta lens is proportional to the scanning angle.

Product Specifications
Item number	M174_F-theta
Design wavelength	355 nm
Effective focal length	174.7 mm
Max. Entrance aperture	8.0 mm
Optical scan angle	± 25.4°
Scan length (1 mirror system)	22.1 mm
Aperture stop distance	154.2 mm
Working distance	220.0 mm
Scan area for a 2 mirror system with mirror distance from lens housing for mirror2 / mirror1	109×109 15.1 / 28.1
Max. telecentricity error	9.5°
Total transmission	>98%
Lens material	Fused silica
LIDT (coating)	1.0J/cm² per 1ns pulse at 50Hz 1.0 MW/cm² cw
SP and USP usable [P/O]	×