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Optical glass in blocks or bars

Our advantages and services for you:

  • exclusive delivery of quantities up to 20 kg directly from stock
  • Bar or block sections by means of separating cut

The fine annealed optical glasses in standard delivery quality from SCHOTT are supplied by Hellma Materials directly from stock in Jena with no minimum order value. These glasses are tested for streaks, bubbles, stress birefringence and refractive index scattering and their quality is documented by a works certificate in accordance with ISO 10474.

Available glass types in BLOCKFORM

  • Fluorine crown: N-FK5
  • Boron crown: N-BK7
  • Zinc crown: N-ZK7A
  • Barium crown: N-BAK1, N-BAK2, N-BAK4, N-BAK4HT
  • Double Light Flint: LLF1
  • Flint: SF1, SF2, SF4, SF6, SF6HT, SF10, SF57

Available glass types in BARRENFORM

  • Fluorine crown: N-FK51A, N-FK58
  • Phosphate heavy crown: N-PSK3, N-PSKS3A
  • Boron crown: N-BK7, N-BK10
  • Kron: N-K5, K10
  • Heavy crown: N-SK2, N-SK2HT, N-SK4, N-SK5, N-SK11, N-SK14, N-SK16
  • Kron-Flint: N-KF9
  • Barium light flint: N-BALF4, N-BALF5
  • Heavy-duty crown: N-SSK2, N-SSK5, N-SSK8
  • Lanthanum crown: N-LAK7, N-LAK8, N-LAK9, N-LAK10, N-LAK12, N-LAK14, N-LAK21, N-LAK22, N-LAK28, N-LAK33B, N-LAK34
  • Barium flint: N-BAF4, N-BAF10, N-BAF51, N-BAF52
  • Leicht-Flint: LF5
  • Flint: N-F2, F2, F2HT, F5, SF5, SF6HT, SF11, SF56A
  • Barium heavy flint: N-BASF2, N-BASF64
  • Lanthanum flint: N-LAF2, N-LAF7, N-LAF21, N-LAF33, N-LAF34
  • Lanthanum heavy flint: N-LASF9, N-LASF31A, N-LASF40, N-LASF41, N-LASF43, N-LASF44, N-LASF45, N-LASF46B, N-LASF55, LASF35
  • Heavy flint: N-SF1, N-SF2, N-SF4, N-SF5, N-SF6, N-SF6HT, N-SF6HTULTRA, N-SF8, N-SF11, N-SF14, N-SF15, N-SF57, N-SF57HT, N-SF57HTULTRA, N-SF66, N-SF10, SF11
  • Short flint special glass: N-KZFS2, N-KZFS4, N-KZFS5, N-KZFS8, N-KZFS11

You can research all optical glasses available from SCHOTT in the Abbe diagram.

Surcharges for constricted optical positions

For optical layers that require a tighter tolerance, we charge the following surcharges on the list price for all preferred glass types:

Surcharges in % for nd tolerances
Level 210
Level 1 20
Level 0.540
Surcharges in % for νd tolerances
Level 215
Level 1 25
Level 0.550

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