Proposition to add the tags S1 and S2 for both principal optical meridians (x, LDx, TOLVx, INSx, TOLx, CKx)

[Gauthier Collienne]

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:

• 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.

Gauthier Collienne - Automation & Robotics