Subject of the invention
[0001] The object of this invention is a cinema room for a multi-screen cinema, each cinema
room having a film projector, a projection screen and tiers of seats or stands with
multiple rows of seats arranged to different heights.
[0002] The arrangement of the invention has peculiarities in its construction concerning
the location of the film projector and the arrangement of the screen, providing multiple
advantages concerning the management of the space intended for a multi-screen cinema,
improving the quality of the projection by minimizing the deformation of the image
projected on the screen, providing a better utilization of the projector light and
maintaining the format of the projection in which the movie has been created, as well
as obtaining the same horizontal vision angle for all of the seats, independently
of the position of the seats in the room and independently of the dimensions of the
room, improving the visualization of the movie by the public.
State of the art
[0003] Multi-screen cinemas are currently known, having a flat screen or a variable curvature
screen vertically arranged, on which frontal screen images are projected by means
of film projectors located behind the projecting cinema room, higher than the tiers
of seats.
[0004] This arrangement of the film projectors brings about various problems among which
the following may be cited:
the utilization of a part of the space aimed at the cinema room for building behind
the room the projection cabins and a corridor for its access;
a limited utilization of the light of the projection and visual deformation of the
projected image on the screen due to the high location of the projector in respect
to the screen and to the difference in the horizontal angle visualization in respect
to the viewers, in function of their location within the cinema room;
in case of screens of large dimensions, the lack of capacity to offer sufficient luminosity
forces frequently to the use of a simultaneous projection with two projectors in each
of the cinema rooms, with the assistance of mirrors or prisms which generate eventual
convergence problems of the images on the screen.
[0005] The difference in the visualization angle and comfort for the viewer between the
first and the last rows of the cinema room is well known by the users, who avoid the
occupation of the firsts rows or lower rows of seats in which they must adopt an uncomfortable
position, having at the same time a worse vision of the images; specially in small
or medium sized cinema rooms.
[0006] While it is true that projection rooms exist with characteristics oriented to obtain
especial effects, as the known "OMNIMAX" cinema rooms, which use a screen with a surface
similar to a an spherical quadrant; the inventor does not know the existence of prior
art embodiments applicable to multi-screen cinemas having an arrangement similar to
the present invention and solving satisfactorily the above related problems.
Disclosure of the invention
[0007] The arrangement for a cinema room for a multi-screen cinema which is the object of
the invention, having in each cinema room a projection screen, a film projector and
a tiers of seats, has features aimed at solving the above problems of the presently
known cinema rooms for multi-screen cinemas.
[0008] For this purpose and according to the invention, a feature of the present arrangement
for cinema rooms for a multi-screen cinema consists in that each of the projection
rooms has a projection screen with a surface which adopts the form of a cylindrical
sector with constant curvature, being said projection screen tilted towards the tiers
of seats, forming said screen an angle with the vertical comprised between 5º and
10º, preferably 7º.
[0009] With the inclination of the screen and its configuration in the form of a cylindrical
sector, an immersion sensation is obtained by the viewers in respect to the scenes
projected on the screen as well as a better aspect of the projections.
[0010] Another feature of the invention consists in the arrangement of the film projector
inside of each cinema room, integrated in an intermediate area of the tiers of seats,
and oriented towards the centre of the screen, forming with said screen an angle comprised
between 80º and 100º, the objective being an angle of 90º with absolute perpendicularity
in respect of the screen.
[0011] This peculiarity permits the integration in the cinema room of the spaces usually
located behind the room and aimed at containing the projection cabins, so that a better
utilization is obtained of the space for the parterre.
[0012] Said arrangement of the film projector, apart from preventing the deformation of
the images, which occurs usually in the cinema rooms in which the film projector is
arranged above the tiers of seats; permits a better utilization of the projector light
given the perpendicularity of the projection in respect to the screen, being unnecessary,
in case of large surface screens, the simultaneous use of two film projectors and
intermediate elements for re-directing towards the screen and the convergence on the
screen of the images coming from the two film projectors which operate simultaneously.
Furthermore, with this arrangement of the film projector, the light cast on the screen
returns to the central area of the tiers of seats, improving the luminosity of the
projection.
[0013] With the arrangement of a unique film projector in the central or intermediate areas
of each cinema room, it is possible to minimize the difference in vertical deformation
among the different rows of seats, which together with the configuration of the screen
in the form of a cylindrical sector, provides an optimized vision of the images by
the viewers.
[0014] Further, the inclination of the screen towards the tiers of seats or parterre provides
the same angle for horizontal vision from all the seats, independently of the dimensions
of the cinema room.
[0015] Additionally, and with the end to optimise the comfort of the users, at least the
first row or seats or lower row of seats has bed-like seats, in which the viewers
can arrange themselves lying or seating with a larger inclination than in the rest
of seats of the rows of seats located behind, improving the comfort of the viewers.
[0016] The above features as well as other features of the invention will be more easily
understood from the detailed consideration of an example embodiment according to the
annexed drawing.
Description of the drawing
[0017] To complete the description of the invention and to facilitate the understanding
of the features of the invention a set of drawings is annexed to this description
in which, with an illustrative character but non to limit the scope of the invention,
the following has been shown:
- Figure 1 shows a plant view of an example embodiment of a cinema room for a multi-screen
cinema arranged according to the invention.
- Figure 2 shows an elevation view of a cross section of the cinema room of figure 1.
- Figure 3 shows a vertical projection of the screen for the cinema room corresponding
to figures 1 and 2, showing the cross section of the cylindrical sector forming said
screen, as well as the height and secant of the cylindrical sector shaped screen.
Preferred embodiment of the invention
[0018] Figures 1 and 2 illustrate a cinema room for a multi-screen cinema according to the
invention, having a film projector (1), a projection screen (2) and the tiers of seats
(3) with multiple rows of seats (3a, 3b,..., 3n).
[0019] As is to be seen from the annexed figures of drawings, the movie projection screen
(2) has a surface in the form of a cylindrical sector, with constant curvature, being
inclined towards the low frontal area as may be observed in figure 2, forming an angle
(a) with a vertical line comprised between 5º and 10º, preferably 7º.
[0020] Said screen (2) has format 1:1.86 which corresponds to a chip format used in digital
projectors.
[0021] The movie projector (1) is integrated in an intermediate area of the tiers of seats
(3), between the seats and directed towards the centre of the screen (2) forming with
said screen (2) an angle comprised between 80º and 100º, preferably 90º; so that a
high utilization of the light coming from the film projector (1) is obtained as well
as an absolute maintenance of the projecting formats in which the film has been created.
[0022] As is to be observed in figures 1 and 2, the first row (3a) of the tiers of seats
has bed-like seats, which objective is to permit the viewers using the same to arrange
themselves lying or seated with a higher inclination than the rest of seats in the
other rows of seats (3b,..., 3n) improving the visualization of the screen.
[0023] As may be observed in figure 3, the cylindrical sector-like surface defined by the
screen (2) has a height (F) as well as a secant (S) with a length ratio comprised
between 1:15 and 1:20.
[0024] After the invention having been sufficiently described in its nature, including a
preferred example of an embodiment of same, it is stated to all effects that the materials,
shape, size and arrangement of the described elements may be modified, whenever the
modifications do not mean an alteration of the essential characteristics of the invention,
as claimed in the following set of claims.
1. Arrangement for a cinema room for a multi-screen cinema, in which each of the cinema
rooms has a film projector (1), a screen (2) and tiers of seats (3) with multiple
rows of seats (3a, 3b,..., 3n) arranged to different heights; characterized in that: the screen (2) has a surface in form of a cylindrical sector with a constant curvature,
being inclined towards the stands forming an angle (a) with a vertical line comprised
between 5º and 10º and in that the film projector (1) is integrated in an intermediate area of the tiers of seats
(3), oriented towards the centre of the screen (1), forming with the screen (2) an
angle (b) comprised between 80º and 100º.
2. Arrangement, according to claim 1, characterized in that the surface in form of a cylindrical sector of the screen (2) has a height (F) and
a secant (S) with a length ratio comprised between 1:15 and 1:20.
3. Arrangement, according to claim 2, characterized in that the screen has a format of 1:1.86.
4. Arrangement, according to claim 1, characterized in that the angle (a) of the screen (2) with respect to a vertical line is of 7º.
5. Arrangement, according to claim 1, characterized in that the angle (b) formed by the film projector (1) in respect to the screen (2) is of
90º.
6. Arrangement, according to any of the previous claims, characterized in that at least the first row of sheets (3a) has bed-like seats in which the viewers can
arrange themselves lying or seated with a higher inclination than in the rows of seats
located behind (3b,..., 3n).