Download - K07 Coating Pada Lensa
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Coating Lensa
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LENS TRANSPARENCY & CLARITY OF VISION ARE THE KEY FEATURES FOR OPTIMUM CONTRAST AND WEARER VISUAL COMFORT… (survey)
BUT, 3 enemies…
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REFLECTIONS
Which alter the contrast by excessive light flow
SCRATCHES
Which alter the contrast
by diffraction
DIRT / SMUDGE
Which alter the contrast
by scattering
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PengertianPengertian
Coating merupakan upaya yang dilakukan untuk meningkatkan fungsi , performa dan kualitas dari lensa Opthalmic
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Jenis CoatingJenis Coating
Tints Hard Coating Anti Reflection Coating Hydropobic Coating
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TintsTints
√ Berfungsi untuk menyerap sinar ultra viloet yang mengganggu penglihatan
√ Sebagai kosmetik
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Penyerapan sinar UVPenyerapan sinar UV
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Kosmetik - fashionableKosmetik - fashionable
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Kosmetik - fashionableKosmetik - fashionable
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Kosmetik - fashionableKosmetik - fashionable
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Kosmetik - fashionableKosmetik - fashionable
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Hard CoatingHard Coating
√ Berfungsi untuk memperkuat permukaan lensa dari goresan ( scratch )yang mungkin terjadi ( perlindungan )
√ Sebagai perekat sebelum dilakukan AR Coating ( adhessive )
√ Bahan dasar Silikon atau Quartz
• Lapisan quartz tidak dapat diwarnai/tint
sesudahnya
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ScratchScratch
√ Merupakan kerusakan pada permukaan lensa yang dapat dilihat
√ Mengakibatkan kepada gangguan bayangan pada lensa
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Proses pabrikasi Hard CoatingProses pabrikasi Hard Coating
Dip-coating Spin-coating
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Dip-Coating
III
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Spin-Coating
I II
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Anti Reflections CoatingAnti Reflections Coating
√ Berfungsi mengurangi refleksi pada permukaan lensa yang dapat mengganggu penglihatan ( visual comfort )
√ Sebagai menambah nilai kosmetik lensa ( décor )
√ Lensa yg tdk diberi AR Coating akan kehilangan 8% transmisinya dari refleksi permukaan
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The Visual ComfortThe Visual Comfort
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04/12/23 19R. BOSMANS FVCC 09 - 11 - 95
The "Decor"The "Decor"
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Ketebalan AR Coating
Ketebalan rambut = 15 µmKetebalan rambut = 15 µm
Automotive coating = 200 µm Antireflective coating = 0.3 µmAutomotive coating = 200 µm Antireflective coating = 0.3 µm
Katebalannya harus ¼ dari panjang gelombangKatebalannya harus ¼ dari panjang gelombang
Ketebalan rambut = 15 µmKetebalan rambut = 15 µm
Automotive coating = 200 µm Antireflective coating = 0.3 µmAutomotive coating = 200 µm Antireflective coating = 0.3 µm
Katebalannya harus ¼ dari panjang gelombangKatebalannya harus ¼ dari panjang gelombang
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Keuntungan– Refleksi berkurang, menambah
transmisi cahaya,meningkatkan penampilan
– Mengurangi silau menyetir malam
Kerugian– lebih sering dibersihkan– goresan menjadi lebih nyata– tidak dpt diwarnai setelah dilapis– tahan kira-kira 2 tahun
Keuntungan AR Coating
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Proses pabrikasi AR CoatingProses pabrikasi AR Coating
APS process ( Leybold ) Evaporations
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A.P.S. process (Leybold)A.P.S. process (Leybold)
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EvaporationEvaporation
Pyrometer
Quartz monitore beam
lenses
Vacuum
MagnetMaterial
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Hydropobic CoatingHydropobic Coating
√ Berfungsi sebagai lapisan anti air agar permukaan lensa lebih mudah dibersihkan
√ utk mencegah lembab,kotoran,minyak dan partikel lain yg dapat melekat pd permukaan lensa
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REMINDER: WE ARE NOT ALONE
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The easier the cleaning…
standarstandardd
Top Top CoatCoat
NONOTop CoatTop Coat
…The bigger the angle,
• Angle Measurement of a drop of water put on the lens surface
Contact angle Test
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new Top Coat« Alizé »
standard Top Coat
test « Magic Ink pen »
Ink Test
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Kesimpulan
SUBSTRATE
DYES
TOP COAT
AR COATING
HARD COAT
PRIMER