Multi-projection system capable of refracting projection light of projection device

• US 9,411,221 B2
• Filed: 03/18/2014
• Issued: 08/09/2016
• Est. Priority Date: 07/12/2012
• Status: Active Grant

• Current Assignee: CJ CGV Co., Ltd.
• Original Assignee: CJ CGV Co., Ltd.
• Inventors: Kim, Hwan Chul, Kang, Su Ryeon
• Primary Examiner(s): Dowling, William C
• Assistant Examiner(s): Howard, Ryan
• Application Number:
  US14/218,356
• Publication Number:
  US 20150002820A1
• Time in Patent Office: 875 Days
• Field of Search: 353/94, 353/30, 353/31
• US Class Current: 1/1
• CPC Class Codes: A47C 1/12 Theatre, auditorium, or similar chairs seats detachably mounted on stadium benches A47C1/16
• CPC Class Codes: A47C 3/18 Chairs or stools with rotatable seat adjustable in height by rotation A47C3/24
• CPC Class Codes: A63J 2005/002 moving the spectator's body
• CPC Class Codes: A63J 25/00 Equipment specially adapted for cinemas cinematographic projection means G03B
• CPC Class Codes: E04H 3/22 Theatres; Concert halls; Studios for broadcasting, cinematography, television or similar purposes
• CPC Class Codes: G02B 30/50 the image being built up from image elements distributed over a 3D volume, e.g. voxels
• CPC Class Codes: G03B 21/003 Cine-projectors
• CPC Class Codes: G03B 21/14 Details
• CPC Class Codes: G03B 21/16 Cooling; Preventing overheating
• CPC Class Codes: G03B 21/2053 Intensity control of illuminating light controlled by video signal processing H04N5/74 or H04N9/31
• CPC Class Codes: G03B 21/206 Control of light source other than position or intensity
• CPC Class Codes: G03B 21/26 Projecting separately subsidiary matter simultaneously with main image
• CPC Class Codes: G03B 21/56 Projection screens
• CPC Class Codes: G03B 21/60 characterised by the nature of the surface
• CPC Class Codes: G03B 21/608 Fluid screens
• CPC Class Codes: G03B 29/00 Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects combinations with flash apparatus G03B15/03
• CPC Class Codes: G03B 31/00 Associated working of cameras or projectors with sound-recording or sound-reproducing means
• CPC Class Codes: G03B 37/04 with cameras or projectors providing touching or overlapping fields of view
• CPC Class Codes: G03B 41/00 Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• CPC Class Codes: H04N 21/4316 : for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
• CPC Class Codes: H04N 21/47 : End-user applications
• CPC Class Codes: H04N 9/3147 : Multi-projection systems displays in general H04N9/12; video walls G06F3/1446, G09G2300/026
• CPC Class Codes: H04N 9/3182 : Colour adjustment, e.g. white balance, shading or gamut white balance per se H04N9/73; control of amplitude of colour signals H04N9/68; colour control circuits for displays in general G09G5/02, G09G3/2003, G09G3/3607
• CPC Class Codes: H04N 9/3185 : Geometric adjustment, e.g. keystone or convergence optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14
• CPC Class Codes: H04N 9/3194 : including sensor feedback

Abstract

The present invention provides a “multi-projection system” including a plurality of projection surfaces arranged so as not to be parallel to each other and two or more projection devices for projecting images on the plurality of projection surfaces, in which the two or more projection devices include a refraction projection device in which projection light is refracted before it reaches a projection surface.

Claims

1. A multi-projection system comprising:

a plurality of projection surfaces arranged so as not to be parallel to each other;

two or more projection devices for projecting images on the plurality of projection surfaces, wherein the two or more projection devices comprise a refraction projection device in which projection light is refracted before it reaches a projection surface; and

a projection light refraction unit for refracting the projection light of the refraction projection device,

wherein the projection light refraction unit changes the angle, at which the projection light of the refraction projection device is refracted, by movement of its body, and

wherein the projection light of the refraction projection device selectively reaches all of the plurality of projection surfaces by the movement of the projection light refraction unit.

2. The multi-projection system of claim 1, wherein the refraction projection device and the projection light refraction unit are provided plurally, each projection light refraction unit being provided in a one to one correspondence with each refraction projection device and refracting the projection light of respective refraction projection device to which the each projection light refraction unit corresponds.

3. The multi-projection system of claim 2, wherein the plurality of refraction projection devices are installed together in a space that does not affect the field of view of an audience.

4. The multi-projection system of claim 2, further comprising a management device for controlling the plurality of refraction projection devices and the plurality of projection light refraction units, wherein the management device controls the angle, at which the projection light of each refraction projection device is refracted, by controlling each projection light refraction unit.

5. The multi-projection system of claim 4, wherein the management device allows each refraction projection device to selectively project an image on all of the plurality of projection surfaces by controlling the angle at which the projection light of each refraction projection device is refracted.

6. The multi-projection system of claim 4, wherein the management device stores identification information of each refraction projection device and operation information of each projection light refraction unit in a matching manner, the operation information of each projection light refraction unit comprising a plurality of operation mode information.

7. The multi-projection system of claim 4, wherein the management device analyzes performance information of the plurality of refraction projection devices to select refraction projection devices that will be used for image projection and controls the angle, at which the projection light of each of the selected refraction projection devices is refracted, to allow images to be projected on the plurality of projection surfaces.

8. The multi-projection system of claim 7, wherein the performance information comprises light intensity information of the refraction projection device, resolution information of the refraction projection device, or maintenance information of the refraction projection device.

9. The multi-projection system of claim 1, wherein the two or more projection devices comprise a main projection device for projecting an image on a main projection surface.

10. The multi-projection system of claim 9, further comprising an auxiliary projection device for projecting an image on an auxiliary projection surface arranged around the main projection surface, wherein the auxiliary projection device is configured in the form of the refraction projection device.

11. The multi-projection system of claim 10, wherein the main projection device and the auxiliary projection device are arranged together in a space that does not affect the field of view of an audience.

12. The multi-projection system of claim 10, wherein the auxiliary projection device projects an image at the entire time or at a specific time when the main projection device projects the image and the projection light of the auxiliary projection device is projected after being refracted.

13. The multi-projection system of claim 9, wherein the refraction projection device projects an image on the main projection surface on behalf of the main projection device in the event of a failure of the main projection device.

14. The multi-projection system of claim 13, wherein the refraction projection device is provided plurally and a refraction projection device, which is determined to have the best performance among the plurality of refraction projection devices, projects an image on behalf of the main projection device.

15. The multi-projection system of claim 1, wherein when the plurality of projection surfaces are of different types, the two or more projection devices project corrected images, and the correction is performed so as to offset differences in properties between the projection surfaces.

16. The multi-projection system of claim 15, wherein the differences in properties comprise a difference in brightness, a difference in chromaticity, or a difference in reflectance.