Laser Light Source Module

• US 20130038247A1
• Filed: 06/03/2011
• Published: 02/14/2013
• Est. Priority Date: 07/23/2010
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Okumura, Fujio
• Granted Patent: US 9,048,612 B2
• Time in Patent Office: Days
• US Class Current: 315/362
• CPC Class Codes: G03B 21/2033 LED or laser light sources
• CPC Class Codes: G03B 21/2086 Security or safety means in lamp houses
• CPC Class Codes: H01S 5/02253 using lenses
• CPC Class Codes: H01S 5/042 Electrical excitation ; Circuits therefor monolithically integrated laser drive components H01S5/0261

Abstract

A laser light source module that does not emit laser light when taken out of a device or that does not emit laser light when the device is modified by removing a portion of the device is installed and used in a case and is provided with: a laser unit that includes a memory unit that stores a password and that operates when an input password that is entered matches a password stored in the memory unit; a password-setting mechanism that generates different data according to the state of the case; and a password-generating circuit that generates an input password that matches the password stored in the memory unit by means of data generated by means of the password-setting mechanism when the casie is in a normal state.

Claims

1. A laser light source module that is used installed in a case, comprising:

a laser unit that is provided with a memory unit that stores a password and that operates when an input password that is entered as input matches with a password that is stored in said memory unit;

password-setting mechanisms that generate different data according to the state of said case; and

a password-generating circuit that, when said case is in a normal state, generates, by means of data that were generated by said password-setting mechanisms, an input password that matches the password that is stored in said memory unit.

2. The laser light source module as set forth in claim 1, wherein:

said case is formed by combining a plurality of parts;

said password-setting mechanisms are provided with;

cover password-setting mechanisms that constitute a part of said case in which wiring that connects a plurality of terminals is implemented; and

connection unit password-setting mechanisms that are provided at connection sites when the plurality of parts that form said case are combined and that further are capable of setting a predetermined data string, the data string that is set being reset when the assembly is taken apart; and

said password-generating circuit generates said input password based on the connection state of the plurality of wiring that is indicated by said cover password-setting mechanisms and the data string that is indicated by the connection unit password-setting mechanisms.

3. The laser light source module as set forth in claim 1 or claim 2, wherein said laser unit is provided with:

a laser element that supplies laser light;

a laser element-incapacitating circuit that is capable of incapacitating said laser element; and

a password-judging circuit that is provided with said memory unit and that, when an input password from said password-generating circuit does not match with a password that is stored in said memory unit more for than a predetermined number of times, incapacitates said laser element by means of said laser element-incapacitating circuit.