Optical apparatus and laser display apparatus having laser beam scanner each
First Claim
1. An optical apparatus having a scanner for scanning a predetermined area with a laser beam, said optical apparatus comprising:
- a laser source;
the scanner having a scanning mirror for causing a laser beam generated by said laser source to scan;
an angle sensor for sensing angles of said scanning mirror of said scanner;
a fault detection block for determining whether said scanning mirror operates safely and normally based at least on angle information coming from said angle sensor; and
a projection control block for controlling projection of said laser beam based on fault detection information coming from said fault detection block;
a detection sensor for detecting signals output by the projection control block;
an overall control block for supplying a shield control signal to the projection control block;
a motor driver receiving signals from the overall control block; and
a scanner motor for rotating the scanning mirror of the scanner as instructed by said motor driver, said angle sensor attached to said scanner motor for driving the scanner and sensing rotation angles of the motor to determine the angle of scanner mirror rotation to provide a signal representing the detected angle to the fault detection block.
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Abstract
An optical apparatus is disclosed which has a scanner for scanning a predetermined area with a laser beam. The optical apparatus comprises: a laser source; a scanner having a scanning mirror for causing a laser beam generated by the laser source to scan; an angle sensor for sensing angles of the scanning mirror of the scanner; a fault detection block for determining whether the scanning mirror operates safely and normally based at least on angle information coming from the angle sensor; and a projection control block for controlling projection of the laser beam based on fault detection information coming from the fault detection block.
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Citations
1 Claim
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1. An optical apparatus having a scanner for scanning a predetermined area with a laser beam, said optical apparatus comprising:
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a laser source; the scanner having a scanning mirror for causing a laser beam generated by said laser source to scan; an angle sensor for sensing angles of said scanning mirror of said scanner; a fault detection block for determining whether said scanning mirror operates safely and normally based at least on angle information coming from said angle sensor; and a projection control block for controlling projection of said laser beam based on fault detection information coming from said fault detection block; a detection sensor for detecting signals output by the projection control block; an overall control block for supplying a shield control signal to the projection control block; a motor driver receiving signals from the overall control block; and a scanner motor for rotating the scanning mirror of the scanner as instructed by said motor driver, said angle sensor attached to said scanner motor for driving the scanner and sensing rotation angles of the motor to determine the angle of scanner mirror rotation to provide a signal representing the detected angle to the fault detection block.
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Specification
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- Resources
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Current AssigneeSony Corporation (Sony Group Corp.)
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Original AssigneeSony Corporation (Sony Group Corp.)
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InventorsSakai, Yoshitsugu
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Primary Examiner(s)Phan, James
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Application NumberUS11/113,293Publication NumberTime in Patent Office512 DaysField of Search359/212, 359/215, 359/223, 250/559.29, 250/559.37US Class Current359/212.2CPC Class CodesG02B 26/0808 by means of one or more dif...
