Everything related to http://resources.maxwellrender.com
User avatar
By Tyrone Marshall
#163110
A big thankyou to everyone that joined in. The library is complete. The only remaining effort is the groups of family iors. I will put together a mxs scene file for this and report back to you all in about a week.

Thanks again, without all of your help this could have been a much longer process.
User avatar
By hdesbois
#164559
rendering: platinum, pt.ior
data devired from info found here: http://www.luxpop.com/

Image



data:
4 295.2 885.2 59
1.45 2.14
1.48 2.21
1.5 2.3
1.53 2.36
1.56 2.42
1.58 2.49
1.6 2.56
1.62 2.62
1.65 2.69
1.67 2.75
1.71 2.81
1.73 2.87
1.76 2.93
1.78 3
1.81 3.06
1.84 3.12
1.86 3.18
1.88 3.23
1.91 3.29
1.93 3.35
1.96 3.42
1.99 3.47
2.03 3.53
2.06 3.59
2.09 3.65
2.12 3.7
2.15 3.73
2.17 3.78
2.2 3.83
2.22 3.89
2.24 3.95
2.27 4
2.29 4.05
2.31 4.1
2.34 4.16
2.36 4.22
2.39 4.27
2.42 4.32
2.46 4.37
2.5 4.41
2.53 4.46
2.56 4.51
2.59 4.56
2.62 4.61
2.65 4.66
2.68 4.71
2.7 4.75
2.73 4.8
2.76 4.84
2.79 4.89
2.82 4.93
2.85 4.98
2.89 5.02
2.92 5.06
2.95 5.11
2.98 5.15
3.01 5.19
3.04 5.23
3.07 5.28
3.1 5.32


S.L. 20
Render Cost: LOW
Remarks: lower S.L. ok
Last edited by hdesbois on Mon Jun 26, 2006 9:54 am, edited 1 time in total.
User avatar
By hdesbois
#164632
Here are the description of ior file as found with the SOPRA database:

A full ior file (or complex ior file) stores the index of refraction (N) and absorption or extinction coefficient (K) for each wavelenght. It is an ASCII file that follows this specification :
The first number indicates the spectral unit (1 = eV, 2 = µm, 3 = cm-1, 4 = nm )
<spectral_unit> <spectral_range> <spectral_range> <number_of_intervals>
<N> <K>
<N> <K>

Example:

h2o.ior/water:

1 1.5 6 90
1.329 0
1.329291 0
1.329579 0
1.329866 0
1.330149 0
1.330429 0
1.330705 0
...
1.378997 0
1.38058 0
1.382205 0
1.383869 0
1.385561 0
1.387275 0
1.389 0

this file provide the n and k values for water at energies ranging from 1.5 to 6 eV for 90 intervals (hence it contains 91 n and k values). The measured k values being very low are rounded down to 0.


Note that the unit part (first number) has been omitted in the Maxwell manual, though some ior use another unit than eV (1) and seem to work ok nevertheless.

Any n/k dataset reasonably complete in the visible spectrum can be used to make an ior file. It may need some interpolation to have even intervals. I found that Findgraph software ( http://www.findgraph.com/ ) is convenient to get an interpolated dataset. I haven't tryied it yet, but it seems that you can even retrieve a dataset from a scanned curve.

HD

HD
User avatar
By hdesbois
#164962
sf66 glass sf66.ior


Image





data derived from schott glass catalogue (2000)
data:

4 404.7 848.7 74
2.00800000 0.00000000
2.00300000 0.00000000
1.99700000 0.00000000
1.99200000 0.00000000
1.98700000 0.00000000
1.98300000 0.00000000
1.97900000 0.00000000
1.97600000 0.00000000
1.97200000 0.00000000
1.96900000 0.00000000
1.96600000 0.00000000
1.96200000 0.00000000
1.95900000 0.00000000
1.95600000 0.00000000
1.95400000 0.00000000
1.95100000 0.00000000
1.94900000 0.00000000
1.94700000 0.00000000
1.94500000 0.00000000
1.94300000 0.00000000
1.94000000 0.00000000
1.93800000 0.00000000
1.93600000 0.00000000
1.93400000 0.00000000
1.93200000 0.00000000
1.93100000 0.00000000
1.92900000 0.00000000
1.92800000 0.00000000
1.92600000 0.00000000
1.92500000 0.00000000
1.92400000 0.00000000
1.92200000 0.00000000
1.92100000 0.00000000
1.92000000 0.00000000
1.91900000 0.00000000
1.91800000 0.00000000
1.91600000 0.00000000
1.91500000 0.00000000
1.91400000 0.00000000
1.91300000 0.00000000
1.91200000 0.00000000
1.91100000 0.00000000
1.91000000 0.00000000
1.90900000 0.00000000
1.90800000 0.00000000
1.90700000 0.00000000
1.90700000 0.00000000
1.90600000 0.00000000
1.90500000 0.00000000
1.90400000 0.00000000
1.90400000 0.00000000
1.90300000 0.00000000
1.90300000 0.00000000
1.90200000 0.00000000
1.90100000 0.00000000
1.90100000 0.00000000
1.90000000 0.00000000
1.90000000 0.00000000
1.89900000 0.00000000
1.89900000 0.00000000
1.89800000 0.00000000
1.89800000 0.00000000
1.89700000 0.00000000
1.89700000 0.00000000
1.89600000 0.00000000
1.89600000 0.00000000
1.89500000 0.00000000
1.89500000 0.00000000
1.89400000 0.00000000
1.89400000 0.00000000
1.89300000 0.00000000
1.89300000 0.00000000
1.89200000 0.00000000
1.89200000 0.00000000
1.89100000 0.00000000

S.L. 20
Render Cost MEDIUM
Remarks: highest refractive index / lower Abbe of optical glasses. Maybe worth a try for Swarovski style strass items (though I could not get optical data for this).
Last edited by hdesbois on Tue Jun 27, 2006 7:42 pm, edited 2 times in total.
User avatar
By hdesbois
#165120
Rendering: K7 crown glass, K7.ior

Image


data derived from schott website

data :
4 334.1 1004 67
1.53900000 0.00000000
1.53700000 0.00000000
1.53400000 0.00000000
1.53200000 0.00000000
1.53000000 0.00000000
1.52900000 0.00000000
1.52700000 0.00000000
1.52500000 0.00000000
1.52400000 0.00000000
1.52300000 0.00000000
1.52200000 0.00000000
1.52100000 0.00000000
1.52000000 0.00000000
1.51900000 0.00000000
1.51800000 0.00000000
1.51700000 0.00000000
1.51600000 0.00000000
1.51600000 0.00000000
1.51500000 0.00000000
1.51500000 0.00000000
1.51400000 0.00000000
1.51300000 0.00000000
1.51300000 0.00000000
1.51200000 0.00000000
1.51200000 0.00000000
1.51100000 0.00000000
1.51100000 0.00000000
1.51000000 0.00000000
1.51000000 0.00000000
1.51000000 0.00000000
1.50900000 0.00000000
1.50900000 0.00000000
1.50900000 0.00000000
1.50800000 0.00000000
1.50800000 0.00000000
1.50800000 0.00000000
1.50700000 0.00000000
1.50700000 0.00000000
1.50700000 0.00000000
1.50700000 0.00000000
1.50600000 0.00000000
1.50600000 0.00000000
1.50600000 0.00000000
1.50600000 0.00000000
1.50600000 0.00000000
1.50500000 0.00000000
1.50500000 0.00000000
1.50500000 0.00000000
1.50500000 0.00000000
1.50400000 0.00000000
1.50400000 0.00000000
1.50400000 0.00000000
1.50400000 0.00000000
1.50400000 0.00000000
1.50400000 0.00000000
1.50300000 0.00000000
1.50300000 0.00000000
1.50300000 0.00000000
1.50300000 0.00000000
1.50300000 0.00000000
1.50300000 0.00000000
1.50300000 0.00000000
1.50200000 0.00000000
1.50200000 0.00000000
1.50200000 0.00000000
1.50200000 0.00000000
1.50200000 0.00000000
1.50200000 0.00000000


S.L.: 21
Render cost: HIGH
Remarks: common optical crown glass with lower Abbe number than BK7. Probably a good choice for ordinary (i.e. tableware, etc.) glass. Higher S.L. (>21) seems required.
Last edited by hdesbois on Wed Jun 28, 2006 8:51 am, edited 1 time in total.
User avatar
By hdesbois
#165338
Rendering: light flint glass F5, F5.ior
Data from derived Schott website


Image


Data:
4 334.1 1004 67
1.63400000 0.00000000
1.62900000 0.00000000
1.62400000 0.00000000
1.62000000 0.00000000
1.61600000 0.00000000
1.61300000 0.00000000
1.61000000 0.00000000
1.60700000 0.00000000
1.60400000 0.00000000
1.60200000 0.00000000
1.60000000 0.00000000
1.59800000 0.00000000
1.59600000 0.00000000
1.59500000 0.00000000
1.59300000 0.00000000
1.59200000 0.00000000
1.59100000 0.00000000
1.58900000 0.00000000
1.58800000 0.00000000
1.58700000 0.00000000
1.58600000 0.00000000
1.58500000 0.00000000
1.58400000 0.00000000
1.58300000 0.00000000
1.58200000 0.00000000
1.58200000 0.00000000
1.58100000 0.00000000
1.58000000 0.00000000
1.58000000 0.00000000
1.57900000 0.00000000
1.57800000 0.00000000
1.57800000 0.00000000
1.57700000 0.00000000
1.57700000 0.00000000
1.57600000 0.00000000
1.57600000 0.00000000
1.57500000 0.00000000
1.57500000 0.00000000
1.57500000 0.00000000
1.57400000 0.00000000
1.57400000 0.00000000
1.57400000 0.00000000
1.57300000 0.00000000
1.57300000 0.00000000
1.57300000 0.00000000
1.57200000 0.00000000
1.57200000 0.00000000
1.57200000 0.00000000
1.57100000 0.00000000
1.57100000 0.00000000
1.57100000 0.00000000
1.57000000 0.00000000
1.57000000 0.00000000
1.57000000 0.00000000
1.57000000 0.00000000
1.56900000 0.00000000
1.56900000 0.00000000
1.56900000 0.00000000
1.56900000 0.00000000
1.56900000 0.00000000
1.56800000 0.00000000
1.56800000 0.00000000
1.56800000 0.00000000
1.56800000 0.00000000
1.56800000 0.00000000
1.56700000 0.00000000
1.56700000 0.00000000
1.56700000 0.00000000




S.L.: 21
Render Cost: MEDIUM
Remarks: This glass has stronger refraction and lower Abbe than the K7 type. Its optical properties should be close to those of lead crystal (24% lead or more) commonly used to make glasses, tumblers, decanters, vases, etc. Might need higher S.L.
User avatar
By hdesbois
#165544
Rendering: colored glass1: violet crown

Data extrapolated from: http://webexhibits.org/causesofcolor/13.html

Image

Data:
4 401 691 29
1.50800000 0.00000000
1.50800000 0.00000000
1.50700000 0.00000000
1.50500000 0.00000000
1.50200000 0.00000000
1.50000000 0.00000000
1.49600000 0.00000000
1.49200000 0.00000000
1.48700000 0.00000000
1.48200000 0.00000000
1.47500000 0.00129300
1.46800000 0.00538600
1.46100000 0.01313000
1.45200000 0.02679000
1.46100000 0.05467000
1.49700000 0.08313000
1.53700000 0.03886000
1.54800000 0.01679000
1.53800000 0.00583900
1.52800000 0.00105700
1.52100000 0.00000000
1.51700000 0.00000000
1.51300000 0.00000000
1.51000000 0.00000000
1.50700000 0.00000000
1.50600000 0.00000000
1.50400000 0.00000000
1.50400000 0.00000000
1.50300000 0.00000000
1.50200000 0.00000000


S.L.: 20
Render Cost: MEDIUM
The purpose of this particular material is to understand how these complex ior materials do work. Here is the diagram used to make the material:
Image
I'm not even sure if this refers to an actual material, but anyway it gives great insights about how to make about any colored glass.
Further information about the peculiar shape of the n curve here:
http://farside.ph.utexas.edu/teaching/j ... ode57.html
Last edited by hdesbois on Thu Jun 29, 2006 9:10 am, edited 1 time in total.
User avatar
By hdesbois
#165617
Rendering: blood red ruby
Data derived from: http://www.gaaj-zenhokyo.co.jp/research ... 01-en.html
with lots of guesswork.

Image


Data:
4 236 720 54
1.77100000 0.00000000
1.77100000 0.00000000
1.77100000 0.07917000
1.77100000 0.07915000
1.77100000 0.07913000
1.77100000 0.07912000
1.77200000 0.07910000
1.77200000 0.07908000
1.77200000 0.07906000
1.77200000 0.07905000
1.77100000 0.07750000
1.77000000 0.07294000
1.76900000 0.06942000
1.76900000 0.07057000
1.76900000 0.07497000
1.77000000 0.07675000
1.77100000 0.07734000
1.77200000 0.07767000
1.77200000 0.07786000
1.77200000 0.07728000
1.77100000 0.07478000
1.76900000 0.06542000
1.76900000 0.05340000
1.76800000 0.04283000
1.76800000 0.03818000
1.76800000 0.03956000
1.76800000 0.04499000
1.76800000 0.05090000
1.76900000 0.05693000
1.77000000 0.06239000
1.77100000 0.06708000
1.77100000 0.07047000
1.77200000 0.07184000
1.77200000 0.07159000
1.77200000 0.06935000
1.77200000 0.06512000
1.77100000 0.05832000
1.77000000 0.04799000
1.76900000 0.03407000
1.76800000 0.01993000
1.76700000 0.01088000
1.76600000 0.00744600
1.76600000 0.00533900
1.76600000 0.00354100
1.76600000 0.00000000
1.76600000 0.00000000
1.76500000 0.00000000
1.76500000 0.00000000
1.76500000 0.00000000
1.76500000 0.00000000
1.76500000 0.00000000
1.76500000 0.00000000
1.76400000 0.00000000
1.76400000 0.00000000
1.76400000 0.00000000

S.L.: 21
Render Cost: MEDIUM
Remarks: change third number (720) to lower value (such as 700) to get a lighter red
Last edited by hdesbois on Fri Jun 30, 2006 1:05 am, edited 1 time in total.
By Toxie
#165688
Ive seeen u guys getting cool IOR files but:

How u convert *.nk or *.psc files to *.ior files???? to work in Maxwell?????
  • 1
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
Texture/finish lost in render.

Anything?

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