• Reasons behind the choices Cosina makes

New glass is not made in a day

2017.12.01

• Reasons behind the choices Cosina makes

Annealing to cure optical glass (2)

2017.11.15

• Reasons behind the choices Cosina makes

How optical elements are perfectly centered

2017.11.03

• Reasons behind the choices Cosina makes

Annealing to cure optical glass (1)

2017.11.01

• Reasons behind the choices Cosina makes

Cosmetics for clean lenses

2017.10.13

• Reasons behind the choices Cosina makes

Diatomite heating trays

2017.10.02

• Reasons behind the choices Cosina makes

Molds and tools for making lens blanks

2017.09.15

• Reasons behind the choices Cosina makes

Press-molding at 700ºC

2017.09.01

• Reasons behind the choices Cosina makes

Barrel polishing to a uniform size, weight, shape and grain

2017.08.01

• コンテンツ

APO-LANTHARの誕生の歴史

2017.07.20

• Reasons behind the choices Cosina makes

Adamant about cutting glass blanks by hand

2017.07.14

• Reasons behind the choices Cosina makes

Careful inspection of glass materials

2017.07.03