| 摘要 |
PURPOSE: A hologram recording device is provided to correct the distortion of the hologram of an object by forming a non-linear Fresnel zone plate with scan beams for hologram recording. CONSTITUTION: A light source (110) generates an electromagnetic wave. A dividing means (120) divides the electromagnetic wave into a first beam and a second beam. An interference means (160) interferes the first and second beams and forms an interference beam of a non-linear Fresnel zone plate shape. A scan means (165) uses the interference beam for scanning an object. An optical detection means (175) detects the beam reflected from the object. [Reference numerals] (110) Light source; (120) Dividing unit; (130) Frequency shift unit; (135) Signal producing unit; (180) Electronic processing unit; (181) Heterodyne extracting unit; (183) Signal processing unit; (184) Storing unit; (185) Scan controller; (AA) Function generator; (BB) Optical system
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