Glass Lenses Pressed Blanks

Optical glass materials and direct pressing products are fabricated in our Akishima factory in Tokyo, Japan and supplied to the pressed lens blanks factory (HOPT-RP) in the Kingdom of Thailand as strip bars (extruded bars). HOPT-RP supply reheat-pressing blanks or rolled and sliced blanks to the polishing factory nearby.

Direct Pressed Blanks (DP)

Direct pressed blanks are formed by a fully automatic direct casting process. HOYA’s DP product is better and superior to its RP product in dimensional accuracy in outside diameter, thickness, etc.

Re-heat Pressed Blanks (RP)

Re-heat pressed blanks are formed by a manual press method using a glass cutting and glass softening process.

Rolled and Sliced Blanks (RS)

Rolled and sliced blanks are formed in such a way that they become precisely rounded off and sliced. HOYA’s RS product is superior to pressed blanks in dimensional accuracy.

List of Recommended Glass Types (Glass Lenses Pressed Blanks)

  Glass TypeCode  Glass TypeCode  Glass TypeCode
FCD1497-816E-FDS1-W923-209NBFD32730-322
FCD10A459-902E-FDS2003-193TAF1773-496
FCD100437-951E-FDS3104-170TAF3D804-465
FCD515593-686FDS16-W986-165TAFD5G835-427
FCD600594-605FDS18-W946-180TAFD25904-313
FCD705550-755FDS20-W 870-200TAFD30883-408
PCD4618-634FDS24921-240TAFD32871-407
PCD40620-639FDS90-SG847-238TAFD33881-401
PCD51593-670FF8752-251TAFD35911-353
LAC8713-539NBFD10834-373TAFD37A900-374
LAC14697-555NBFD13806-407TAFD40-W001-255
TAC8729-547NBFD15-W806-333TAFD45954-323
E-FD80690-311NBFD25855-252TAFD55-W001-291
FD60-W805-255NBFD29770-297TAFD65051-269
FD225808-228NBFD30859-300

List of Common Glass Types (Glass Lenses Pressed Blanks)

Glass TypeCode  Glass TypeCode  Glass TypeCode
FC5487-704E-F2620-363FDS90(P)847-239
FCD1B497-816E-F5603-380FF5593-354
BSC7517-642E-FD1717-295BAFD7702-412
E-C3518-590E-FD2648-338BAFD8723-380
BAC4569-560E-FD4755-275LAF2744-449
BACD5589-613E-FD5673-322LAF3717-480
BACD14603-607E-FD8689-312NBF1743-492
BACD15623-581E-FD10728-283NBFD3805-396
BACD16620-603E-FD13741-278NBFD11786-439
BACD18639-555E-FD15699-301NBFD15806-333
BACED5658-509FD60805-255TAF3804-465
E-CF6517-522FD110785-257TAFD5F835-427
E-FEL1548-458FD140762-266TAFD37900-374
E-FEL2541-472E-FDS1923-209TAFD40001-255
E-FL5581-409FDS18946-180TAFD55001-291
E-FL6567-428FDS90847-238