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====== LensType.Dat ======

===== Description =====

The LensType.Dat file contains all deliverable base lenses.

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===== Table structure =====

^N. ^Fieldname ^Pos ^Length ^Format ^Comments ^
|1*|Man. code base lens|1|6|T6| |
|2|Designation|7|40|T40|The designation must be clear and must not be used for several IT codes.|
|3|Deliverable from|47|8|D|Empty = only limited by "deliverable up until"|
|4|Deliverable up until|55|8|D|Empty = no expiry date|
|5|Single vision / multifocals|63|1|9|0=single vision \\ 1=bifocals \\ 2=trifocals \\ 3=progressive lenses \\ 4=Workstation / office lens|
|6|Balancing lens|64|1|9|0 = No balancing lens available for this lens. \\ 1 = A balancing lens is available for this lens.|
|7|Balancing lens, lens terms|65|3|999|Balancing lens costs approx. xxx % of the original price|
|8|Balancing lens, coating terms|68|3|999|Coating of balancing lens costs approx. xxx % of the original price|
|9|Standard/ brand|71|1|9|0=standard \\ 1=brand \\ 2=Eco |
|10|Material|72|1|9|1=glass \\ 2=plastic \\ 3=polycarbonate \\ 4=Trivex© |
|11|Refractive index|73|5|99999|9.9999|
|12|Density (specific gravity)|78|3|999|9.99 g/cm³|
|13|Abbe no.|81|4|9999|99.99|
|14|Aspheric lens|85|1|9|0=spherical \\ 1=aspheric \\ 2=biaspherical \\ 3=freeform|
|15|Lenticular lens|86|1|B| |
|16|ET contained|87|1|9|0=no ET \\ 2=single ET \\ 5=multiple ET \\ 8=Super ET \\ 9=back surface ET |
|17|Colors contained|88|1|9|0=no color \\ 1=filter<15% absorption \\ 2=colored|
|18|Photochromic|89|1|B| |
|19|Hard coating incl.|90|1|B| |
|20|Clean coating incl.|91|1|9|0=no \\ 1=normal Clean \\ 2=Super Clean|
|21|UV coating|92|1|B| |
|22|Coating incl.|93|1|B| |
|23|MDM incl.|94|1|B| |
|24|non-standard diameters incl.|95|1|9|0=no \\ 1=yes \\ 2=smaller or central diameters in the plus range at no extra charge|
|25|Non-standard thickness incl.|96|1|B| |
|26|Insurance incl.|97|1|B| |
|27|Prism incl.|98|1|B|1 means that there is no extra charge for the prism in the complete, deliverable power range|
|28|Filter category|99|1|9|0 to 4 acc. to DIN EN ISO 8930-3|
|29|Restrictions in traffic|100|1|9|See Traffic suitability|
|30|UV edge|101|3|999|999nm|
|31|UV-A transmission|104|4|9999|99,99%|
|32|UV-B transmission|108|4|9999|99,99%|
|33|Extended warranty|112|1|B| |
|34|Single lens order|113|1|9|0=not possible \\ 1=possible \\ 2=with fictive opposite lens|
|35|Traveller service|114|1|B| |
|36|Sorting|115|3|999|ascending number sorting acc. to manufacturer's instructions|
|37|Brief designation|118|15|T15|Brief designation of the lens|
|38|N.A.|133|2|99|Field was removed|
|39|N.A.|135|2|99|Field was removed|
|40|Exposed filter category|137|1|9|0 to 4 acc. to DIN EN ISO 8930-3 Value for exposed status of photochromic lenses|
|41|Office lens Addition/Power decrease|138|1|9|0=no specification required \\ 1=specify distance + addition \\ 2=specify near + power decrease|
|42|Polarising|139|1|B| |
|43|Contrast-enhancing|140|1|B| |
|44|Principal meridian check incl. Add.|141|1|B|1= to check the principal meridian, the near value (Sph. + Add.) if a lens is used. (See remarks) This field is also used for price determination (See remarks)|
|45|Optimised wavefront incl.|142|1|B| |


===== Notes ===== 


**Important**: 
==== The allocation of the numbers to the colors has changed. ====

This is now valid:\\
1=glass\\
2=plastic\\
3=polycarbonate\\
4=Trivex©

SF4 had the following definition which is no longer valid: \\
0=glass\\
1=plastic \\
2=composite \\
3=polycarbonate

The new allocation was made to ensure that the numbers for the material are identical for the lenses and the coatings. (Note: Material as such no longer exists in the Options.Dat file. However, the allocation of numbers has remained in the new version)


==== Hard coating incl.”, “Clean coating incl.” ====

The fields "Hard coating incl.", Clean coating incl.", etc. are assigned with value 1 if these extras are supplied automatically, i.e. if no IT code for the option/coating is transferred with the electronic order.

==== Principal Meridian check incl. Add. ====
If this field has the value “True”, the near value of the lens (SPH + ADD) has to be used for checking the power range.

Example:
<code>
Delivery range PM -4.00 bis +4.00
Sph -4.75 Add. 0,50 --> KO (-4,25)
Sph -4.50 Add. 0,50 --> OK (-4,00)
Sph -4.25 Add. 0,50 --> OK (-3,75)
Sph -4.75 Add. 0,75 --> OK (-4,00)
Sph -4.50 Add. 0,75 --> OK (-3,75)
Sph -4.25 Add. 0,75 --> OK (-3,50)
Sph +3.25 Add. 0,50 --> OK (+3,75)
Sph +3.50 Add. 0,50 --> OK (+4,00)
Sph +3.75 Add. 0,50 --> KO (+4,25)
Sph +3.25 Add. 0,75 --> OK (+4,00)
Sph +3.50 Add. 0,75 --> KO (+4,25)
Sph +3.75 Add. 0,75 --> KO (+4,50)
</code>



==== Price determination for Principal Meridian check incl. Add. ====
If the field has the value „true“, then the near value (sph+add) is used for pricing.

Example:
<code>
The following price groups exist:2, 4, 6
Sph: +3,75 Add:0,5 → The lens is in price group 6, da +3,75 +0,5 = 4,25 (Near value)
Sph: -2,25 Add:0,5 → The lens is in price group 2, da -2,25 +0,5 = -1,75 (Near value)
</code>