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BACK SURFACE PROGRESSIVE

BACK SURFACE PROGRESSIVE. TOKAI BS SERIES. TOKAI BS SERIES. Custom-made back surface progressive. Back surface progressive. BS-13 UV BS-15 UV. BS-C UV. 1) Back surface progressive 2) Back surface aspheric 3) Personal Design System a. Selectable progressive corridor

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BACK SURFACE PROGRESSIVE

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  1. BACK SURFACE PROGRESSIVE TOKAI BS SERIES

  2. TOKAI BS SERIES Custom-made back surface progressive Back surface progressive BS-13 UV BS-15 UV BS-C UV 1) Back surface progressive 2) Back surface aspheric 3) Personal Design System a. Selectable progressive corridor b. Selectable front base curve c. Requestable inset amount (Flexible inset amount) 1) Back surface progressive 2) Back surface aspheric 3) Progressive corridor 13 / 15

  3. TOKAI BS SERIES The design points of BS series 1. Improvement in basic ophthalmic performance 2. Correspondence to individuals (Personal Design System)

  4. Improvement in Basic performance BACK SURFACE PROGRESSIVE DESIGN Assuming a progressive and aspheric surface Designing an ideal surface , which combines dioptoric, aspheric and progressive surface

  5. Improvement in Basic performance BACK SURFACE ASPHERIC DESIGN Front surface aspheric design Fixed aspheric amount -3.50D -4.50D -4.00D

  6. Improvement in Basic performance TOKAI BS series BACK SURFACE ASPHERIC DESIGN Ideal aspheric amount for each dioptor -3.50D -4.50D -4.00D

  7. Improvement in Basic performance BACK SURFACE ASPHERIC DESIGN Certain aspheric amount at each axis -4.50D -3.50D

  8. Improvement in Basic performance 15 KINDS OF FRONT BASE CURVE BS series Lower Higher Conventional progressive

  9. Increasing the vision field Reducing floating and distortions IMPROVEMENT IN BASIC OPHTHALMIC PERFORMANCE BACK SURFACE PROGRESSIVE + ASPHERIC Thinner and Lighter Ordinary BS series About 35% (S-6.00 ADD2.00 Comparison in Tokai) About 30%

  10. Correspondence to individual PERSONAL DESIGN SYSTEM (P.D.S) Corresponding to each wearer’s individual eyes 1.Progressive corridor Selectable from corridor lengths of 11, 13, 15 or 17mm 2. Front base curve Selectable front base curve from lower or higher 3. Inset Requestable inset 0.0 to 5.0mm, 0.1mm steps *Entrustment is allowed

  11. ◎ ◎ ◎ Considering the shift of requirements 使用目的・累進経験・年齢・度数情報 静的ライフスタイル・ｽﾀｲﾘｯｼｭﾌﾚｰﾑ Active life style, mitigated floating and distortion PERSONAL DESIGN SYSTEM (P.D.S) Corridor Length Selectable ◎ Entrustment Experience Age

  12. Correspondence to individual CORRIDOR LENGTH 13mm 15mm 17mm 11mm ◎ ◎ ◎ ◎

  13. Correspondence to individual CORRIDOR LENGTH Considering the shift of requirements Age of wearer Experience of wearing progressive *Selecting from 13mm or 15mm automatically *Determining appropriate corridor length, considering far dioptor and addition

  14. Selectable Entrustment PERSONAL DESIGN SYSTEM (P.D.S) Front base curve Higher Ophthalmic performance Cosmetic Frame shape Standard Lower Adjusting front curve Optimized based curve

  15. Correspondence to individual FRONT BASE CURVE *Request a Higher or Lower *Two steps higher or lower taking a balance of R & L base curves Higher Higher Standard Lower Lower Negative Positive

  16. Correspondence to individual FRONT BASE CURVE Increasing cosmetic performance Standard base curve The lens is thin. Same distance from lens to face = Small deformation Lower Increasing ophthalmic performance Higher The lens is thick. Same distance from eye to lens = Small distortion

  17. Requestable Entrustment PERSONAL DESIGN SYSTEM (P.D.S) Inset 1) Specific inset 0.0mm to 5.0mm in 0.1mm step, at Right and Left 2) Far PD and selecting reading distance from 33, 36 or 40cm Calculated the inset amount based on Far dioptor, Addition and Front base curve (Far PD 62mm and Reading distance 36cm) Inset amount is printed on envelop

  18. Correspondence to individual Far and Near EP Inset Flexible inset design Far EP Corridor length Near EP

  19. Correspondence to individual Prism effect = Change of PD Prism effected eye sight Flexible inset design Naked eye sight Far PD Object Reading distance

  20. Correspondence to individual Influence of Far dioptor Flexible inset design Inset(mm) 2.5mm

  21. Correspondence to individual Model of calculated ray tracing Flexible inset design Vertex distance12mm Tilt angle: 10 degrees Horizontal glance line Progressive corridor Reading glance line

  22. Correspondence to individual Influence of vertex distance Flexible inset design Inset(mm)

  23. Correspondence to individual Transition by tilt angle Flexible inset design Inset(mm)

  24. Difference of Inset amount by PD for Far Requesting a specific Inset amount Large Inset mount Long PD Object

  25. Difference of Inset amount by PD for Far Requesting a specific Inset amount Small Inset amount Object Short PD

  26. Difference of Inset amount by Reading distance Requesting a specific Inset amount Inset amount Object Reading distance

  27. Difference of Inset amount by Reading distance Requesting a specific Inset amount Large Inset amount Object Short Reading distance

  28. Requesting a specific Inset amount Difference of Far PD & Reading distance Long PD Inset(mm) Short PD

  29. Selectable progressive corridor Selectable front base curve Requestable inset amount Flexible inset amount Optimum aspheric amount Suitable front base curve TOKAI BS SERIES FLEXIBILITY P.D.S Improvement in basic performance OPTIMIZATION

  30. BS-C UV BS-15 UV & BS-13 UV TOKAI PROGRESSIVE LINE-UP GRADE 1.70-15 PROGRESSIVE UV 1.70-13 PROGRESSIVE UV 1.60/42-15 PROGRESSIVE UV 1.60/42-13 PROGRESSIVE UV 1.50-15 PROGRESSIVE 1.50-13 PROGRESSIVE Far vision All-round Near vision

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