Light-beam projecting device

• US 5,988,816 A
• Filed: 03/19/1998
• Issued: 11/23/1999
• Est. Priority Date: 03/20/1997
• Status: Expired due to Fees

• Current Assignee: Clay Paky SPA (Ams-Osram AG)
• Original Assignee: Clay Paky SPA (Ams-Osram AG)
• Inventors: Quadri, Pasquale
• Primary Examiner(s): Dowling, William C.
• Application Number:
  US09/045,159
• Time in Patent Office: 614 Days
• Field of Search: 353/62, 353/42, 353/43, 353/44, 353/29, 353/30, 353/31, 353/35, 353/48, 353/51, 353/99, 353/94, 353/101, 353/46, 353/50, 359/618, 359/629
• US Class Current: 353/29
• CPC Class Codes: F21S 10/007 using rotating transparent or colored disks, e.g. gobo wheels
• CPC Class Codes: F21S 8/00 Lighting devices intended for fixed installation F21S9/00, F21S10/00 take precedence; using a string or strip of light sources F21S4/00
• CPC Class Codes: F21V 5/008 Combination of two or more successive refractors along an optical axis
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21W 2131/406 for theatres, stages or film studios
• CPC Class Codes: F21Y 2113/20 of different form

Abstract

The projector includes a first light source for generating a light beam; a succession of functional assemblies for imparting special light effects to the light beam; an output mirror for deflecting the light beam in a controlled manner; a laser source for generating a laser beam; a controlled-deflection optical unit for controlled deflection of the laser beam; and a mirror for superimposing the laser beam on the light beam. The projector emits a light beam of predetermined color and shape, which may be directed in a controlled manner, and in which is visible a beam of greater intensity and predetermined color, by which to form writing or images on illuminated targets.

Claims

1. An entertainment light-beam projecting device for producing special optical effects, comprising a casing (2), a first light source (12) housed in said casing (2) for generating a first light beam (14);

and light processing means (16, 17, 18,

     19) for imparting predetermined optical properties to said first light beam (14);

said device being characterized by further comprising a second light source (25) housed in said casing (2), adjacent and in close proximity to said first light source (12), for generating a second light beam (28);

superimposing means (34) for superimposing said second light beam (28) on said first light beam (14) and confining said second light beam (28) within said first beam (14).

2. A device as claimed in claim 1, characterized in that said second light source (25) is a laser light source for generating a laser beam (28).

3. A device as claimed in claim 2, characterized in that said superimposing means (34) comprise a reflecting means (34) located along a path of said first light beam (14) for directing said laser beam (28) inside said first light beam (14).

4. A device as claimed in claim 3, characterized in that said light processing means (16, 17, 18, 19) comprise a lens (18) having a focus;

and in that said reflecting means (34) is located at the focus of said lens (18).

5. A device as claimed in claim 3, characterized by comprising an actuating means (35) for moving said reflecting means (34) from between a first position along said path of said first light beam (14) and a second position clear of the path of said first light beam (14).

6. A device as claimed in claim 3, characterized in that said reflecting means (34) comprise at least one mirror (34).

7. A device as claimed in claim 2, characterized by comprising controlled-deflection means (26) for controlled deflection of said laser beam (28) to obtain, on targets illuminated by said first light beam (14), images or writing formed by said laser beam (28).

8. A device as claimed in claim 7, characterized in that said controlled-deflection means (26) comprise a pair of movable mirrors (29a, 29b).

9. A device as claimed in claim 7, characterized in that said controlled-deflection means comprise a pair of mirrors (29a, 29b) fitted to respective galvanometers (30a, 30b).

10. A device as claimed in claim 7, characterized by comprising an additional mirror (33) for directing on to said reflecting means (34) said laser beam (28) deflected by said controlled-deflection means (26).

11. A device as claimed in claim 1, characterized by comprising a movable orientable output mirror (23) for directing said first (14) and second (28) light beams in predetermined directions.