CHIRPT (image) Colorado State University Share Print E-Mail Caption Spatiotemporal modulations of illumination intensity in the CHIRPT microscope are achieved by imaging a spinning modulation mask to the focal plane of the microscope. A spatial filter placed in the pupil plane of the objective lens allows illumination intensity to form by the interference of two beams in the object plane. The microscope and illumination intensity are shown here at a snapshot in time. Credit Jeff Field/Colorado State University Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.