Laser projection light

• US 9,239,513 B2
• Filed: 11/03/2010
• Issued: 01/19/2016
• Est. Priority Date: 11/03/2010
• Status: Active Grant

• Current Assignee: Aaron Chien, Hsin-Yi Wang, Te-Ju Chien
• Original Assignee: Tseng-Lu Chien
• Inventors: Chien, Tseng-Lu
• Primary Examiner(s): Dowling, William C
• Assistant Examiner(s): BROOKS, JERRY L.
• Application Number:
  US12/938,564
• Publication Number:
  US 20120105814A1
• Time in Patent Office: 1,903 Days
• Field of Search: 353/85, 353/119, 353/122, 362/641
• US Class Current: 1/1
• CPC Class Codes: F21L 4/00 Electric lighting devices with self-contained electric batteries or cells
• CPC Class Codes: F21S 9/02 the power supply being a battery or accumulator
• CPC Class Codes: F21V 23/0471 the sensor detecting the proximity, the presence or the movement of an object or a person
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: F21Y 2115/30 Semiconductor lasers
• CPC Class Codes: G03B 21/20 Lamp housings
• CPC Class Codes: G03B 21/2086 Security or safety means in lamp houses

Abstract

A laser projection light has a light blocking wall and safety sensor to prevent people from directly looking into the laser beams to harm their eyes. The laser projection light may be an AC powered laser projection light or a DC powered battery operated unit, and may also incorporate a UL listed LED light device to that provides an LED light device function in addition to the projection function in case people do not want to see the laser projection light performance and wish to switch off the laser beam.

Claims

1. A laser projection light, comprising:

a housing;

a laser unit for projecting laser beams over a projection area that extends above and to all sides of said housing;

at least one light blocking wall extending from only one side of said housing into a corresponding one side of said projection area to prevent laser beams from entering the projection area on said one side of said housing, wherein said light blocking wall does not extend on sides of said housing other than said one side, thereby permitting said laser beams to enter a portion of the projection area that is not on said one side while protecting eyes of a person from said laser beams on said one side; and

safety sensor means arranged on the housing for detecting a location of a person and turning off the laser beam when the person is within a predetermined safety range of the safety sensor means, said blocking wall providing additional protection for the eyes of the person when the person is outside the predetermined safety range.

2. A laser projection light as claimed in claim 1, wherein the laser projection light includes additional parts and accessories selected from the group consisting of circuitry and conductors;

prongs;

a battery compartment;

laser optics;

hologram optics;

a grating;

means for adjusting the laser beam;

a motor;

means for moving the laser, housing, or parts and accessories;

at least one lens;

at least one LED;

a safety certified LED base; and

control means for causing the laser projection light to exhibits predetermined light performance when the laser is connected with a power source.

3. A laser projection light as claimed in claim 2, wherein the predetermined light performance is selected from the group consisting of the following lighting effects:

flashing;

chasing;

random;

rotating;

fade-in/fade-out;

moving;

varying;

color changing;

color adding;

geometric light pattern display;

changeable dot matrix patterns; and

motion picture effects.