A subsidiary of Teledyne Technologies Inc. increased its ownership stake in a company that makes survey and digital imaging instruments.

Teledyne DALSA Inc. now owns 51 percent of Optech Inc., in Vaughan, Ontario. Terms of the deal between Teledyne DALSA and Optech were not disclosed.

Teledyne DALSA, a subsidiary of Thousand Oaks-based Teledyne Technologies, has the option to purchase the remaining shares in Optech. Teledyne made an initial 19 percent investment in Optech in March 2011.

Optech equipment adds to Teledyne’s portfolio of visible, infrared, X-ray and ultraviolet sensors, cameras and software, said Chairman, President and CEO Robert Mehrabian.

“In addition, Optech’s bathymetric integrated light detection and ranging systems used for coastal zone mapping and shallow water profiling are highly complementary with our marine survey sensors and systems,” Mehrabian said in a prepared statement.

Mark R. Madler