• The rays of light are brought to a point .
• The three beams converge to a ( common ) point .
• The rays of light are brought to a point .
• The three beams converge to a ( common ) point .
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012