3.3 Laser-Holographic Complex …
245
the beam splitter 7, the mirror 10 and the reversible carrier 14 should be as
minimal as possible.
1.3.21. The distance l 1 between the object and the hologram should be as minimal
as possible.
1.3.22. The angles ξ and ψ (see Fig. 3.34) should be in the range from 35° to
45° (l 1 = 1 m). At smaller distance, the range is also smaller, because it is
determined by the resolution of the reversible carrier (see requirements to
the reversible carrier). The angles θ and β should be as minimal as possible.
1.3.23. All the elements of the optical scheme should be placed on one massive
base and be firmly fixed to it and the base should be vibroinsulated.
3.3.2 Principle of Operations of the Complex
The principle of operation of the complex can be described in the following way
(Figs. 3.35 and 3.36). As a result of cardiac contraction, shift of points of human
chest occurs. Information about the distribution of these shifts along the human chest
surface, about the value, the direction and the speed of these shifts can help to make
a conclusion about the state of human cardiovascular system.
It is known that registration and reconstruction of a double-exposure hologram,
one exposure of which corresponds to the initial state of the object under study, and
the other one—to the altered state (for example, deformed) give possibility to form
Fig. 3.35 Temporal diagram of the complex operation. Reprinted from [94] with permission
245
the beam splitter 7, the mirror 10 and the reversible carrier 14 should be as
minimal as possible.
1.3.21. The distance l 1 between the object and the hologram should be as minimal
as possible.
1.3.22. The angles ξ and ψ (see Fig. 3.34) should be in the range from 35° to
45° (l 1 = 1 m). At smaller distance, the range is also smaller, because it is
determined by the resolution of the reversible carrier (see requirements to
the reversible carrier). The angles θ and β should be as minimal as possible.
1.3.23. All the elements of the optical scheme should be placed on one massive
base and be firmly fixed to it and the base should be vibroinsulated.
3.3.2 Principle of Operations of the Complex
The principle of operation of the complex can be described in the following way
(Figs. 3.35 and 3.36). As a result of cardiac contraction, shift of points of human
chest occurs. Information about the distribution of these shifts along the human chest
surface, about the value, the direction and the speed of these shifts can help to make
a conclusion about the state of human cardiovascular system.
It is known that registration and reconstruction of a double-exposure hologram,
one exposure of which corresponds to the initial state of the object under study, and
the other one—to the altered state (for example, deformed) give possibility to form
Fig. 3.35 Temporal diagram of the complex operation. Reprinted from [94] with permission