Graduated Discs Diameter 27 mm0 pages

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STANDARD INCREMENTAL GRADUATED DISCS AND RETICLES, Ø27 mm
SPECIFICATIONS:
Material:
t Selected floatglass
t Planeness: 10 µm/100 × 100 mm
t Coefficient of expansion: α ≈ 8.5 × 10-6/K
t Glass-thickness: 1.0 ±0.1 mm
t Reticle scribed and broken
t Tolerance of diameter
t (graduated discs drilled): ±0.1 mm
t Chippings: ≤ 0.1 mm
Grating:
t Sputtered chromium on glass
t Transmissibility: < 0.3 % at λ = 400 – 900 nm
t Reflexion > 60 % at λ = 400 – 900 nm
t Line : width ratio = 1 : 1
t Accuracy: ≤ ± 2"
t Mouse bites: ≤ 2 µm
t Line width:t ≤ 10 µm: ±10 %
t t
> 10 µm: ±1.5 µm
Allowed defects within optical active area:
t Pin holes and chromium spots:
t - up to 1 000 lines:tmax. 3, Ø≤ 100 µm
t - over 1 000 lines:t max. 3, Ø≤ 50 µm
t Minimum distance:t
10 mm
tScratches:
t One scratch with a width ≤ 10 µm
t on both sides allowed, length not critical
On request:
t Other glass types
t Other glass dimensions
t Other coatings
t Chamfered discs

DIAMETER 27 mm
Line rates
t
t4
t9
t10
t15
t20
t25
t30
t40
t50
t60
t90

t100
t120
t125
t150
t160
t180
t200
t235
t250
t300
t314
t318

t360
t400
t500
t600
t625
t635
t720
t900
t 1 000
t 1 021
t 1 024
t 1 080

1 200
1 250
1 440
1 500
1 800
2 000
2 048
2 500
3 600
4 096
5 000

Other line rates on request

Date10/2013, Art.Nr. 599637-02, Doc.Nr. D599637-00-A-01, Technical adjustments in reserve!

A-5121 Tarsdorf

+43 (0)6278 / 8192-0

FAX

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