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Again, make sure the emulsion faces the object scene.A reflection hologram is viewed differently from a transmission hologram as shown in Figure 19d.

So, finally the image, formed by this process consist of light reflected by the hologram. This is an overhead reconstructed hologram because when you hold the plate vertical in front of your eyes, the reconstructing light will be incident on the plate from overhead or over your shoulder.You could have placed the object scene up higher and centered and perpendicular to the recording plate during the exposure as shown in Figure 19e. The image will be less bright under these conditions. Importance of Reflection hologram Use a left to right, right to left sweeping motion when spraying. It's better to use multiple thin coats than one or two thick coats. This hologram makes the phenomenon happen by a simple two stage process with the first step involving making of a transmission hologram. West Bengal, India At the same time, the beam passing through the plate serves as the reference beam.The elimination of vibrations and component movement during the exposure is even more critical during a reflection hologram recording.

Because the angle between the reflected light from the object scene to the plate and the incident angle of the reference beam totals 124 degrees, the spacing between fringes in the interference pattern in the emulsion is much narrower (finer) than a transmission hologram and must not move during the exposure.

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To increase the brightness of the image, place the plate, emulsion up, on a piece of paper towel that is on a large area of newspaper outdoors and spray the plate with 2 to 3 thin coats of quick-drying flat black enamel paint. Then it involves construction of another hologram by treating the first image of the hologram as the object.Managing Director: 00919830153912

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Reflection Holograms With a reflection hologram, the image is stored in a thick emulsion and can be viewed in white light.

As a result, the plane of the film has the structure of the interference pattern lying perpendicular to it. To help prevent any movement between the object scene and plate holder, you must once again connect the table mounts together as you did for your single-beam transmission hologram.The recording and processing procedure for this type of hologram is the same as for the transmission hologram except that you want to end up with an exposure density of 2. All Rights Reserved.Creating a Single-Beam White Light Reflection HologramFigure 19a: Single beam reflection hologram setup.Figure 19b: Plate holder and object scene illuminated properly with diverging beam.Figure 19c: Plate holder and object scene positioning and reference Figure 19d: Reconstructing reflection hologram virtual image.Figure 19e: Plate holder with object scene positioned high and As the two beams interfere, it gets recorded in the photographic film. An imaging system (an eye or a camera) located in the reconstructed beam 'sees' exactly the same scene as it would have done when viewing the original.

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And once the film is developed you can get a look of it by illuminating the developed film with a laser film.Regular holograms are therefore only capable of producing sharp images when viewed with a monochromatic light. Helpline: 00919830051210 This is called a reflection hologram because the reconstructing light is reflected from the plate to the viewer. This means that when you view the hologram, the plate will not be tilted towards you but vertical and you'll need to look downward into the plate to see the image.

So again, you want to check the hologram's density after you've developed the plate through the developer and stop bath, washing, photoflo, and drying.

Once you've found the right exposure time for a density of 2, you can continue the development process with a 30 second soaking of the plate, bleaching, washing, photoflo, and drying. You can tell the emulsion side from the glass side of the plate (or acetate side if using film) because the emulsion side has a dull finish when inspected under white light whereas the glass or acetate side is shinny.

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