| Apr. 1947 |
Tetsuzo Natsume, honorary chairman, founded plating company, Iida Works, Ltd. |
| Mar. 1956 |
Iida Works changed company name to Natsume Optical Works (NOW). |
| NOW started manufacturing lenses and moved its plant to its current location. |
| Oct. 1967 |
NOW founded Tokyo Sales Branch for metropolitan area. |
| Dec. 1973 |
Head Factory was rebuilt. |
| Aug. 1985 |
Natsume Optical Works changed company name to Natsume Optical Corporation (NOC). |
| May. 1988 |
Head Factory was rebuilt and Branch Factory was merged. |
| Apr. 1991 |
Yuzo Natsume was designated as President. |
| Apr. 1994 |
Tadahisa Miyashita was designated as President. |
| May. 1996 |
Plant 3 was built and started operation. |
| May. 1998 |
NOC established Tack Coat Corporation through joint investment with Sigma Koki. |
| Feb. 1999 |
NOC received ISO-9002. |
| Sep. 1999 |
Osaka Sales Branch was founded. |
| West Plant1 was built. |
| Apr. 2001 |
East Plant1 was built. |
| Dec. 2002 |
NOC established FLC through joint investment with three companies. |
| Aug. 2003 |
NOC announced that it settled a technical cooperation agreement with Tubaki Nakashima for the production of ball lens. |
| Oct. 2003 |
Head Office and Tokyo Sales Branch received ISO-9001. |
| Apr. 2005 |
Tokyo Sales Branch moved to Nerima Ward. |
| Jul. 2005 |
NOC founded new Technology Center. |
| Dec. 2005 |
NOC received ISO-9001: 2000 |
| Jan. 2006 |
NOC received ISO-14001: 2004 |
| Apr. 2007 |
NOC celebrated the 60th anniversary of its founding. |
| Plant 6 was built. |
| Jun. 2007 |
Plant 2 was reformed. |
| Jun. 2008 |
"300 of Japan's Vibrant Monodzukuri (Manufacturing) SMEs" selected by METI |
| Apr. 2009 |
Yoshiharu Natsume was designated as President. |
| Oct. 2009 |
NOC received ISO-9001: 2008 |
| May. 2011 |
Tokyo Sales Office moved to Shinjuku Ward. |
