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TThe he First Back surface ProgressiveFirst Back surface Progressive世界初!内面累進多焦点レンズ世界初!内面累進多焦点レンズ
SEIKO P-1SYSEIKO P-1SY
Back surface PALBack surface PAL
December 2006December 2006
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Line Up of SEIKO PAL Line Up of SEIKO PAL 累進多焦点累進多焦点
P-1 SY P-1 SY 1.74 1.74 : Back surface PAL : Back surface PAL 内面累進内面累進P-1 SY 1.67 : Back surface PAL P-1 SY 1.67 : Back surface PAL 内面累進内面累進P-1 SY 1.60 : Back surface PAL P-1 SY 1.60 : Back surface PAL 内面累進内面累進P-1 W 1.67 P-1 W 1.67 :: Standard PAL Standard PAL 標準外面累標準外面累
進進P-1 W 1.56 : Standard PAL P-1 W 1.56 : Standard PAL 標準外面累進標準外面累進SSVP-1GSSVP-1G (( 1.671.67 ))
3
SEIKO P-1 SSEIKO P-1 SYY (( Synergy)Synergy)
The first “Back surface progressive additional lens” in the worldharmonize the PAL(=progressive additional lens) surface and TC surface (now with aspheric design as well) Adopting all the technologies of SEIKO PAL design 世界初の内面累進多焦点レンズ
1) MDA method : Multi Divided Aspheric 2) VPC method: Vertical Prism Control3) All aspheric surface on back side
4
Nowadays, back TC is global standard内面 TC が世界標準
From front TC to back TCFrom front TC to back TC
Front TC Back TC
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Back surface PAL as next global standard !内面累進を世界標準へ
From front PAL to back (surface) PALFrom front PAL to back (surface) PAL
PAL surface + TC
surface
PAL surfaceLow based
spherical surface
TC surface
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Curve compositions of PAL lensesCurve compositions of PAL lenses
Front side PAL Back surface PAL
5 curve 5 curve
7 curve
7 curve
5 curve
5 curve 5 curve
5 curve
3 curve
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Why a distortion occurs in PAL lenses?Why a distortion occurs in PAL lenses?
S .M .=MS × MP
S .M .(Spectacle Magnification)
MP= Power factor
1
1-L・P=
MS= Shape factor
=1
1- ・D1t n
PALPAL
1) 1) The view size in Lens changeThe view size in Lens change
Single vision vision Bi-Focal Tri- Focal
2) How to fix the view sizeL : Distance
Behind Lens
P : Lens Power
T : Thickness
N : index
D1 : Front curve
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Mechanism of Front side PALMechanism of Front side PAL
(S .M .)=(MS) × (MP)(S .M .)=(MS) × (MP)
Front PAL 外面累進Front PAL 外面累進
Power arranged by front curve
Magnification change Variation of front curve Variation of power
Effect of
2 factors
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Mechanism of Back surface PALMechanism of Back surface PAL
Back surface PAL Back surface PAL 内面累内面累進進
Back surface PAL Back surface PAL 内面累内面累進進
(S .M .)=(MS) × (MP)(S .M .)=(MS) × (MP)
Control power onBack side
Magnification ChangeMagnification Change Variation of Front curveVariation of Front curve Variation of powerVariation of power
Only 1 effect
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Comparison between the PAL designsComparison between the PAL designs
Front side PAL Back surface PAL Back surface PAL + Back surface AS
Clear Vision 20% wider
Distortion 30% less
Clear Vision 30% Wider
Distortion 40% Less
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Squared project
View images of Back surface PAL 1View images of Back surface PAL 1
Base curve is different between vertical direction & horizontal direction.
Distortion becomes larger
Image distortion is
only occurred along
horizontal direction
and still smaller
Front side PAL
Back surface PAL
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View images of Back surface PALView images of Back surface PAL 2 2
Conventional front side PAL外面累進
Back surface PAL 内面累進
Far Area
Near Area
遠用視
近用視
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Wide view area of Back surface PALWide view area of Back surface PAL
Front side PAL design Front side PAL design
Back surface PAL
Back surface PAL design
WIDE WIDE
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Near view imagesNear view images of Back surface PALof Back surface PAL
Back surface PAL ( Blue )
Front side PAL ( Green )
150.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50
Sway and distortion has been
improved by as many as 2
ranks , if ADD is over 2.00D
Back surface PAL
Front side PAL
像変形率(
歪み・揺
れ)
2%
4%
6%
8%
10%
Improvement of Sway and distortion
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12mm 14mm 16mm 18mm
広
←
→
狭
Far sight/ 遠用実用視野
P-1G
Near sight/ 近用実用視野
P-1G
Middle sight/ 中間実用視野
P-1G
Sway & Distortion/ 揺像・歪像
小
←
→
大P-1G
P-1W14
SFDP-1W14
SFD
P-1W14SFD
P-1W14
SFD
12mm 14mm 16mm 18mm
12mm 14mm 16mm 18mm 12mm 14mm 16mm 18mm
広
←
→
狭
広
←
→
狭
Corridor length 累進帯長
P-1SY14
P-1SY12
P-1SY14
P-1SY14
P-1SY12
P-1SY14
P-1SY12 P-1W16
P-1W16
P-1W16
P-1W16
P-1SY12
Comparison of each corridor PAL
Corridor length 累進帯長 Corridor length 累進帯長
Corridor length 累進帯長
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Target user of P-1 SYTarget user of P-1 SY
1) High additional power user ( Over +2.00 ) 高加入2) Hyperopia ( Far sightedness) 遠視3) Person who cares Sway and Distortion 4) Person who needs Wider vision 5) Person who is NOT satified with other conventional PAL lens ( Front side PAL)6) Person who wants to have Newest and high advanced
products ( such like Back surface PAL )
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Myopia 近視 Hyperopia 遠視
Hyperopia : example Hyperopia : example 遠視遠視
( Minus lens ) ( Plus lens )
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Corridor length types of SEIKO PALCorridor length types of SEIKO PAL
累進帯長一覧
1 ) P-1 SY (1.74,1.67,1.60 Back
surface PAL)
10mm, 12mm, 14mm
2) P-1 W (1.67, 1.56 standard PAL)
14mm, 16mm
20
Advantage of short corridor lengthAdvantage of short corridor length
短累進帯長の優位性!
Conventional Short corridor PAL
= BigBig Distortion, Distortion, BigBig Image swayImage sway
外面短累進外面短累進 == 像の歪み・揺れ 大像の歪み・揺れ 大
P-1 SY short corridor
= Small Small Distortion, Distortion, Less Less Image Image swaysway
内面短累進=像の歪み・揺れ 小内面短累進=像の歪み・揺れ 小
12mm12mm
14mm14mm
CorridorCorridor Recommended sizeRecommended size Minimum sizeMinimum size
Suggested frame vertical sizesSuggested frame vertical sizes
10mm10mm
Near area from FP : over 17 mmNear area from FP : over 17 mm
Far area from FP : over 15 mmFar area from FP : over 15 mm
Over 32 mmOver 32 mm
Near area from FP : over 15 mmNear area from FP : over 15 mm
Far area from FP : over 10 mmFar area from FP : over 10 mm
Over 25 mmOver 25 mm
Near area from FP : over 19 mmNear area from FP : over 19 mm
Far area from FP : over 15 mmFar area from FP : over 15 mm
Over 34 mmOver 34 mm
Near area from FP : over 21 mmNear area from FP : over 21 mm
Far area from FP : over 15 mmFar area from FP : over 15 mm
Over 36 mmOver 36 mm
Near area from FP : over 17 mmNear area from FP : over 17 mm
Far area from FP : over 10 mmFar area from FP : over 10 mm
Over 27 mmOver 27 mm
Near area from FP : over 19 mmNear area from FP : over 19 mm
Far area from FP : over 10 mmFar area from FP : over 10 mm
Over 29 mmOver 29 mm
22N = 2,148 人
Fair 7%
Not so comfortable 1%
Good 42%
Excellent 50%
High reputation of Back surface PALHigh reputation of Back surface PAL
Most of customers are satisfied with back surface PAL
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2002年 2003年 2004年 2005年
2002年 2003年 2004年 2005年
Sales increase of Back surface PALSales increase of Back surface PAL
Dramatically increasingDramatically increasing
24
Specification Specification 基本性能基本性能
Product name : SEIKO P-1SY(Synergy) Material : Index : 1.74 Abbe No: 33 Density:1.47 Index : 1.67 Abbe No: 32 Density:1.36 Index : 1.60 Abbe No: 42 Density:1.22 Coating: Hard Multi coat (99.0%) Design: Back surface PAL & Aspheric design Length of progressive corridor : 10 / 12 / 14mm
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Production range Production range 製作範囲製作範囲
S 0.00 to S-10.00, TC-5.00 (Expanded from this Spring) S+6.00, TC+5.00 (Expanded from this Spring)
Addition : +0.50 to +3.50 Prism : Up to 3.00D Standard diameter : 80mm/75mm Available diameter : 1.74 60mm to 79mm /1mm step
1.67&1.60 55mm to 79mm /1mm step (+, Plano, MIX)
Also small diameter for minus lens available
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We are supplying the products based on this slogan. We wish to We are supplying the products based on this slogan. We wish to offer people around the world a gentle and comfortable visual life offer people around the world a gentle and comfortable visual life
through eyewear by making use of our advance technologies.through eyewear by making use of our advance technologies.