Although pulsed-echo, scan-line-serial imaging is the mainstream technology in medical ultrasound today, its sound-speed limited data rate capability is a serious bottleneck for high-speed, real-time volume imaging, so-called one-gaze imaging. Such related technologies as visible, near- and far-infrared, mm- or THz-wave imaging, lens and mirror are commonly used together with focal plane pixel based imaging devices. Our approach required developing a low-loss, high-resolution, large F-number ultrasonic lens. We developed a phase-continuous Fresnel lens for Doppler orthographic focal plane array (FPA) imaging. The lens performed well using its main focusing pattern in a vessel containing water and an electronic Doppler phantom. However, undesired responses at pedestal level will require further be improvement.