Ohara S-FPM 5 Optical Glass

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Ohara S-FPM 5 Optical Glass
Categories:	Ceramic; Glass; Optical
Material Notes:	S-FPM5 is a glass material with a ?n / ?T closer to zero than conventional FP-based glass materials and is expected to effectively correct refractive index fluctuations (temperature drift) due to temperature changes. In addition, it has a high partial dispersion ratio ?g, F, which is a characteristic of FP-based glass materials and is effective for correcting secondary chromatic aberration. This glass material can be used, not only for in-vehicle camera lenses, but also for other applications such as projector and interchangeable lenses. Information provided by Ohara Corporation.
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Physical Properties	Original Value	Comments

Specific Gravity	3.74 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	52.1

Mechanical Properties	Original Value	Comments
Hardness, Knoop	410 @Load 0.0999 kg
Modulus of Elasticity	76.9 GPa
Modulus of Rigidity	29.7 GPa
Poissons Ratio	0.296
Abrasion	413	Aa

Thermal Properties	Original Value	Comments
CTE, linear	10.9 µm/m-°C @Temperature -30.0 - 70.0 °C
	12.9 µm/m-°C @Temperature 100 - 300 °C
Thermal Conductivity	0.765 W/m-K @Temperature 35.0 °C
Transformation Temperature, Tg	474 °C	per thermal expansion curve

Optical Properties	Original Value	Comments
Refractive Index	1.53066 @Wavelength 2325.42 nm
	1.53441 @Wavelength 1970.09 nm
	1.53845 @Wavelength 1529.58 nm
	1.54208 @Wavelength 1128.64 nm
	1.5433 @Wavelength 1013.98 nm	nt (Hg t line)
	1.54545 @Wavelength 852.11 nm	ns (Cs s line)
	1.54692 @Wavelength 768.19 nm	nA' (K A' line)
	1.54828 @Wavelength 706.52 nm	nr (He r line)
	1.54963 @Wavelength 656.27 nm	nC (H C line)
	1.55 @Wavelength 643.85 nm	nC' (Cd C' line)
	1.55036 @Wavelength 632.8 nm	nHe-Ne
	1.55193 @Wavelength 589.29 nm	nD
	1.552 @Wavelength 587.56 nm	nd (He D line)
	1.55386 @Wavelength 546.07 nm	ne (Hg e line)
	1.55743 @Wavelength 486.13 nm	nf (H F line)
	1.55788 @Wavelength 479.99 nm	nF' (Cd F' line)
	1.56111 @Wavelength 441.57 nm	nHe-Cd
	1.56167 @Wavelength 435.835 nm	ng (Hg g line)
	1.56517 @Wavelength 404.656 nm	nh (Hg h line)
	1.57111 @Wavelength 365.015 nm	ni (Hg i line)
Abbe Number	70.33	ν e
	70.7	ν d
Optical Dispersion	0.002375	nd-nC; Partial Dispersion
	0.002702	nC-nA'; Partial Dispersion
	0.003502	nh-ng; Partial Dispersion
	0.00386	ne-nC'; Partial Dispersion
	0.004015	nF'-ne; Partial Dispersion
	0.004233	ng-nF; Partial Dispersion
	0.004238	ne-nC; Partial Dispersion
	0.006321	nC-nt; Partial Dispersion
	0.006699	nC'-nt; Partial Dispersion
	0.007808	nF-nC
	0.007875	nF'-nC'
	0.00944	ni-ng; Partial Dispersion
	0.009666	ng-nd; Partial Dispersion
	0.013228	ni-nF'; Partial Dispersion
Transmission, Visible	99.2 % @Thickness 10.0 mm, Wavelength 380 nm	Internal Transmission
	99.5 % @Thickness 10.0 mm, Wavelength 390 nm	Internal Transmission
	99.5 % @Thickness 10.0 mm, Wavelength 420 nm	Internal Transmission
	99.5 % @Thickness 10.0 mm, Wavelength 440 nm	Internal Transmission
	99.6 % @Thickness 10.0 mm, Wavelength 400 nm	Internal Transmission
	99.6 % @Thickness 10.0 mm, Wavelength 460 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 480 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 500 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 650 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 700 nm	Internal Transmission
	99.9 % @Thickness 10.0 mm, Wavelength 550 nm	Internal Transmission
	99.9 % @Thickness 10.0 mm, Wavelength 600 nm	Internal Transmission
IR Transmittance	99.3 % @Thickness 10.0 mm, Wavelength 2400 nm	Internal Transmission
	99.4 % @Thickness 10.0 mm, Wavelength 2200 nm	Internal Transmission
	99.7 % @Thickness 10.0 mm, Wavelength 2000 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 800 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 900 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 1000 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 1200 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 1600 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 1800 nm	Internal Transmission
	99.9 % @Thickness 10.0 mm, Wavelength 1400 nm	Internal Transmission
UV Transmittance	4.0 % @Thickness 10.0 mm, Wavelength 280 nm	Internal Transmission
	10 % @Thickness 10.0 mm, Wavelength 290 nm	Internal Transmission
	20 % @Thickness 10.0 mm, Wavelength 300 nm	Internal Transmission
	35 % @Thickness 10.0 mm, Wavelength 310 nm	Internal Transmission
	56 % @Thickness 10.0 mm, Wavelength 320 nm	Internal Transmission
	73 % @Thickness 10.0 mm, Wavelength 330 nm	Internal Transmission
	86 % @Thickness 10.0 mm, Wavelength 340 nm	Internal Transmission
	92.9 % @Thickness 10.0 mm, Wavelength 350 nm	Internal Transmission
	96.7 % @Thickness 10.0 mm, Wavelength 360 nm	Internal Transmission
	98.4 % @Thickness 10.0 mm, Wavelength 370 nm	Internal Transmission

Descriptive Properties
Acid Resistance, Powder Method, RA(P)	2
CCI	0.00 B
	0.14 G
	0.14 R
coloring, λ 80	345
Coloring, Internal Transmission λ 0.05	282
Coloring, Internal Transmission λ 0.80	335
Knoop Hardness Class	4
Ohara Code d	552708
Ohara Code e	554703
Phosphate Resistance, PR	4
Photoelastic Constant (ß)	1.29
Water Resistance, RW(P)	1
Weathering Resistance (Surface Method) W(S)max	1
Yield Point, At (°C)	503	per thermal expansion curve

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

CZOHARA758 / 281597

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