According to the ISO-8980-1/2 standard (Ophthalmic optics — Uncut finished spectacle lenses), both principal power meridians must be controlled at the primary reference point. Because the DCS is used worldwide in the ophalimic industry, I would like to propose to add the tags S1 and S2 in the DCS document.
As there are measurable values, it makes sens to create these tags with the LD*, TOLV*, INS*, TOL* and CK* tags.
So, for the lower principal power meridian, we have:
S1 => prescribed value
LDS1 =>designed value
TOLVS1 =>tolerance values
INSS1 =>inspected value
TOLS1 => result of the tolerance test
CKS1=>activation of the control
And fo the highest principal power meridian, we have
S2 => prescribed value
LDS2 =>designed value
TOLVS2 =>tolerance values
INSS2 =>inspected value
TOLS2 => result of the tolerance test
CKS2=>activation of the control
note : This topics was discussed shortly during the last DCS meeting in september 2023.
Proposition to add the tags S1 and S2 for both principal optical meridians (x, LDx, TOLVx, INSx, TOLx, CKx)
in DCS Discussion
Posted
Hi,
According to the ISO-8980-1/2 standard (Ophthalmic optics — Uncut finished spectacle lenses), both principal power meridians must be controlled at the primary reference point. Because the DCS is used worldwide in the ophalimic industry, I would like to propose to add the tags S1 and S2 in the DCS document.
As there are measurable values, it makes sens to create these tags with the LD*, TOLV*, INS*, TOL* and CK* tags.
So, for the lower principal power meridian, we have:
And fo the highest principal power meridian, we have
note : This topics was discussed shortly during the last DCS meeting in september 2023.
Gauthier Collienne - Automation & Robotics