Holographic imaging device and holographic imaging method
A camera device, holographic technology, applied in holographic process, measuring device, hologram optical element, etc., can solve the problem of influence and other issues
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no. 1 approach
[0049] First Embodiment: Hologram Device
[0050] refer to figure 1 (a)(b), figure 2 , the hologram device 1 according to the first embodiment will be described. Such as figure 1 (a) As shown in (b), the holographic imaging device 1 includes: a data acquisition unit 10 that acquires and electronically stores the data of the object light O emitted from the object 4 illuminated by the illumination light Q; The image of the object 4 is reproduced from the data acquired by the data acquisition unit 10 . The hologram device 1 of the present embodiment is an imaging device having a long working distance.
[0051] The data acquisition unit 10 has: an image sensor 5 that converts light intensity into an electrical signal and outputs it as hologram data; a beam coupler 3 that is disposed between the object 4 and the image sensor 5; an optical system 2 that shapes light and broadcast; and a data storage unit 6 that stores the acquired data. The hologram device 1 includes a contro...
no. 2 approach
[0064] Second Embodiment: Data Processing Method
[0065] refer to Figure 3 to Figure 6 , the data processing method of the second embodiment will be described. In addition, as an example of an apparatus to which this method is applied, refer to the apparatus of the first embodiment ( figure 1 , figure 2 ). This data processing method can be applied to a holographic imaging device with a long working distance and a wide field of view, a holographic imaging device of a transmission or reflection microscope realizing ultra-high resolution with a high numerical aperture or a synthetic numerical aperture exceeding 1, and the like.
[0066] Such as image 3 As shown, the present data processing method includes steps from the object light hologram acquisition step (S1) to the reproduced object light hologram generation step (S6).
[0067] In the object light hologram acquisition step (S1), from the data of the object light O emitted from the object 4 illuminated by the illumi...
no. 3 approach
[0132] refer to Figure 7 , Figure 8 , the hologram device 1 according to the third embodiment will be described. The hologram device 1 of the present embodiment realizes a transmission-type holographic microscope in which the object 4 and the beam coupler 3 are disposed close to each other. The hologram device 1 includes a condensing lens 23 for illuminating an object 4 with illumination light Q having a condensing point close to the beam coupler 3 . The optical system for the off-axis reference light R uses a small-diameter condenser lens 21 and a needle at the position of the converging point P1 to make the spherical reference light R that forms the converging point P1 enter from the side of the beam coupler 3 . The pinhole plate 25 for the hole is provided close to the side surface of the beam coupler 3 .
[0133] The optical system of the coaxial spherical wave reference light L has: a condenser lens 23 for making the reference light L incident on the beam coupler 3 fro...
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