Flat field focusing mirror, yomwe imadziwikanso kuti field mirror ndi f-theta focusing mirror, ndi kachitidwe ka magalasi kaukadaulo, komwe cholinga chake ndi kupanga malo owoneka bwino mundege yonse yoyika chizindikiro ndi mtengo wa laser. Ndi chimodzi mwazinthu zofunika kwambiri za makina ojambulira laser.