Abstract

The coating of plastics for optical applications is intended to improve the mechanical durability of soft polymers and to serve an antireflection function. Usually a classic four-layer antireflection system is added on top of a single-layer hard coating. With needle optimization, an alternative coating design has been developed. The design is characterized by thin high-refractive-index layers that are almost evenly distributed over the whole stack. Plasma ion-assisted deposition was used to deposit coatings upon poly(methyl methacrylate), polycarbonate, and cyclo-olefin copolymer. Uniform antireflection and high scratch resistance have been achieved.

© 2002 Optical Society of America

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References

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  1. S. Pongratz, A. Zöller, “Plasma ion assisted deposition: a promising technique for optical coatings,” J. Vac. Sci. Technol. A 10, 1897–1904 (1992).
    [CrossRef]
  2. F. Samson, “Ophtalmic lens coatings,” Surf. Coat. Technol. 81, 79–86 (1996).
    [CrossRef]
  3. A. Musset, A. Thelen, “Multilayer antireflection coatings,” in Progress in Optics, E. Wolf, ed. (North-Holland, Amsterdam, 1970), Vol. 8, pp. 203–237.
  4. J. A. Dobrowolski, A. V. Tikhonravov, M. K. Trubetskov, B. T. Sullivan, P. G. Verly, “Optimal single-band normal-incidence antireflection coatings,” Appl. Opt. 35, 644–658 (1996).
    [CrossRef] [PubMed]
  5. A. V. Tikhonravov, M. K. Trubetskov, G. W. DeBell, “Application of the needle optimization technique to the design of optical coatings,” Appl. Opt. 35, 5493–5508 (1996).
    [CrossRef] [PubMed]
  6. U. Schulz, S. Jakobs, N. Kaiser, “SiO2 protective coatings on plastic optics deposited with plasma-IAD,” in Developments in Optical Component Coatings, I. Reid, ed., Proc. SPIE2776, 169–174 (1996).
  7. U. Schulz, P. Munzert, N. Kaiser, “Surface modification of PMMA by DC glow discharge and microwave plasma treatment for the improvement of coating adhesion,” Surf. Coat. Technol. 142–144, 507–511 (2001).
    [CrossRef]
  8. U. Schulz, H. Jähnchen, N. Kaiser, “Plasma pre-treatment and coating of PMMA Fresnel lenses,” in Advances in Optical Interference Coatings, C. Amra, A. Macleod, eds. Proc. SPIE3738, 511–516 (1999).

2001 (1)

U. Schulz, P. Munzert, N. Kaiser, “Surface modification of PMMA by DC glow discharge and microwave plasma treatment for the improvement of coating adhesion,” Surf. Coat. Technol. 142–144, 507–511 (2001).
[CrossRef]

1996 (3)

1992 (1)

S. Pongratz, A. Zöller, “Plasma ion assisted deposition: a promising technique for optical coatings,” J. Vac. Sci. Technol. A 10, 1897–1904 (1992).
[CrossRef]

DeBell, G. W.

Dobrowolski, J. A.

Jähnchen, H.

U. Schulz, H. Jähnchen, N. Kaiser, “Plasma pre-treatment and coating of PMMA Fresnel lenses,” in Advances in Optical Interference Coatings, C. Amra, A. Macleod, eds. Proc. SPIE3738, 511–516 (1999).

Jakobs, S.

U. Schulz, S. Jakobs, N. Kaiser, “SiO2 protective coatings on plastic optics deposited with plasma-IAD,” in Developments in Optical Component Coatings, I. Reid, ed., Proc. SPIE2776, 169–174 (1996).

Kaiser, N.

U. Schulz, P. Munzert, N. Kaiser, “Surface modification of PMMA by DC glow discharge and microwave plasma treatment for the improvement of coating adhesion,” Surf. Coat. Technol. 142–144, 507–511 (2001).
[CrossRef]

U. Schulz, H. Jähnchen, N. Kaiser, “Plasma pre-treatment and coating of PMMA Fresnel lenses,” in Advances in Optical Interference Coatings, C. Amra, A. Macleod, eds. Proc. SPIE3738, 511–516 (1999).

U. Schulz, S. Jakobs, N. Kaiser, “SiO2 protective coatings on plastic optics deposited with plasma-IAD,” in Developments in Optical Component Coatings, I. Reid, ed., Proc. SPIE2776, 169–174 (1996).

Munzert, P.

U. Schulz, P. Munzert, N. Kaiser, “Surface modification of PMMA by DC glow discharge and microwave plasma treatment for the improvement of coating adhesion,” Surf. Coat. Technol. 142–144, 507–511 (2001).
[CrossRef]

Musset, A.

A. Musset, A. Thelen, “Multilayer antireflection coatings,” in Progress in Optics, E. Wolf, ed. (North-Holland, Amsterdam, 1970), Vol. 8, pp. 203–237.

Pongratz, S.

S. Pongratz, A. Zöller, “Plasma ion assisted deposition: a promising technique for optical coatings,” J. Vac. Sci. Technol. A 10, 1897–1904 (1992).
[CrossRef]

Samson, F.

F. Samson, “Ophtalmic lens coatings,” Surf. Coat. Technol. 81, 79–86 (1996).
[CrossRef]

Schulz, U.

U. Schulz, P. Munzert, N. Kaiser, “Surface modification of PMMA by DC glow discharge and microwave plasma treatment for the improvement of coating adhesion,” Surf. Coat. Technol. 142–144, 507–511 (2001).
[CrossRef]

U. Schulz, S. Jakobs, N. Kaiser, “SiO2 protective coatings on plastic optics deposited with plasma-IAD,” in Developments in Optical Component Coatings, I. Reid, ed., Proc. SPIE2776, 169–174 (1996).

U. Schulz, H. Jähnchen, N. Kaiser, “Plasma pre-treatment and coating of PMMA Fresnel lenses,” in Advances in Optical Interference Coatings, C. Amra, A. Macleod, eds. Proc. SPIE3738, 511–516 (1999).

Sullivan, B. T.

Thelen, A.

A. Musset, A. Thelen, “Multilayer antireflection coatings,” in Progress in Optics, E. Wolf, ed. (North-Holland, Amsterdam, 1970), Vol. 8, pp. 203–237.

Tikhonravov, A. V.

Trubetskov, M. K.

Verly, P. G.

Zöller, A.

S. Pongratz, A. Zöller, “Plasma ion assisted deposition: a promising technique for optical coatings,” J. Vac. Sci. Technol. A 10, 1897–1904 (1992).
[CrossRef]

Appl. Opt. (2)

J. Vac. Sci. Technol. A (1)

S. Pongratz, A. Zöller, “Plasma ion assisted deposition: a promising technique for optical coatings,” J. Vac. Sci. Technol. A 10, 1897–1904 (1992).
[CrossRef]

Surf. Coat. Technol. (2)

F. Samson, “Ophtalmic lens coatings,” Surf. Coat. Technol. 81, 79–86 (1996).
[CrossRef]

U. Schulz, P. Munzert, N. Kaiser, “Surface modification of PMMA by DC glow discharge and microwave plasma treatment for the improvement of coating adhesion,” Surf. Coat. Technol. 142–144, 507–511 (2001).
[CrossRef]

Other (3)

U. Schulz, H. Jähnchen, N. Kaiser, “Plasma pre-treatment and coating of PMMA Fresnel lenses,” in Advances in Optical Interference Coatings, C. Amra, A. Macleod, eds. Proc. SPIE3738, 511–516 (1999).

A. Musset, A. Thelen, “Multilayer antireflection coatings,” in Progress in Optics, E. Wolf, ed. (North-Holland, Amsterdam, 1970), Vol. 8, pp. 203–237.

U. Schulz, S. Jakobs, N. Kaiser, “SiO2 protective coatings on plastic optics deposited with plasma-IAD,” in Developments in Optical Component Coatings, I. Reid, ed., Proc. SPIE2776, 169–174 (1996).

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Figures (5)

Fig. 1
Fig. 1

Index profiles and optical performance of the novel design AR-hard-9 and of the classic four-layer design AR-4. Reflectance was calculated for substrate index n = 1.49 (back side disabled).

Fig. 2
Fig. 2

Index profiles and optical performance of designs AR-hard consisting of 7 (AR-hard-7), 13 (AR-hard-13), 19 A(R-hard-19), and 27 (AR-hard-27) layers Substrate index n = 1.49, back side disabled).

Fig. 3
Fig. 3

Transmission of PMMA coated with AR-hard-9; comparison of samples from five batches (No backside coating).

Fig. 4
Fig. 4

Light microscope image of a PC surface, half of which had been coated with AR-hard-27, after the entire surface was rubbed with steel wool. The coated area (left) is not damaged.

Fig. 5
Fig. 5

Transmission of COC and PC after coating with AR-hard-27 on both sides.

Tables (1)

Tables Icon

Table 1 Results of Environmental (ISO 9022) and Adhesion (ISO 9211) Tests of AR-Hard-27 Coating and Single-Layer SiO2 upon COC and PCa

Equations (3)

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sub/M2HL/air,
Design AR-4 sub/15H24L108H83L/air,
Design AR-hard-9 sub/215L5H252L9H247L13H235L22H116L/air.

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