Ultrasonic holographic imaging apparatus having zoom feature

Details Ultrasonic holographic imaging apparatus having zoom feature Ultrasonic holographic imaging apparatus having zoom feature

G - Physics

01

N

G01N 29/06 (2006.01) A61B 8/08 (2006.01) G03H 3/00 (2006.01) G10K 11/30 (2006.01)

Patent

CA 2124074

The preferred embodiment of this invention is illustrated in the figure 2 showing an ultrasonic holographic imaging appar- atus (50) having a multiple lens system (52) that is capable of providing both zoom and focus capability. The system (52) includes lenses (54) and (56) that are independently mounted on lead screws (62) and (64) for movement relative to each other along an optical axis (57). The movement of the system is controlled by drive systems (66) and (68) that have encoders (72) and (74) for ac- curately positioning the lenses (54) and (56) relative to each other in response to signals from a microcontroller (76). The microc- ontroller (76) is operator controlled through control device (78) and (80) to provide both zoom capability and a focus capability.

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