湖北新华光信息材料有限公司

The refractive index (nd) of H-ZF53 is 1.80810 while the abbe number(υd) is 22.70. The H-ZF53 glass has a large negative refractive index temperature coefficient (D0: -1.38E-05). And it has a higher refractive index compared with glass grades such as H-FK61 and H-PK62A. Meanwhile, the glass presents significant design advantages in solving temperature drift problems.
Glass name
H-ZF53
H-FK61
H-PK62A
n_d
nd
1.80810
1.49700
1.61800
υ_d
υd
22.7
81.61
63.39
dn/dt coefficient
D0
-1.38E-05
-9.02E-06
-1.90E-05
Mechanical properties
HK(10⁷ Pa)
431
350
391
FA
232
385
320
Internal transmittance
（τ10mm)
460
0.96
0.998
0.998
420
0.907
0.998
0.994
400
0.819
0.998
0.990

Relative refractive index temperature coefficient dn/dT (10-6/℃)
d(-60～-40)
-4.5
-5
-2.1
d(-40～-20)
-4.2
-5.3
-2.2
d(-20～0)
-3.8
-5.6
-2.3
d(0～20)
-3.5
-5.9
-2.3
d(20～40)
-3.4
-6
-2.4
d(40～60)
-3.3
-6.4
-2.4
d(60～80)
-3.3
-6.6
-2.4
d(80～100)
-3.3
-6.9
-2.4
d(100～120)
-3.1
-7.1
-2.4
d(120～140)
-3.1
-7.3
-2.4
d(140～160)
-3.1
-7.5
-2.4
Chemical Stability
Humidity resistance RC (S) (surface method)
1
1
1
Acid resistance RA (S) (surface method)
1
2
2
Water resistance DW (powder method)
1
1
1
Acid resistance DA (powder method)
1
3
4
Alkali resistance ROH (S) (surface method)
1
2
1
Phosphate resistance RP(S) (surface method)
1
2
2
Density (g/cm3)
ρ(g/cm3)
3.32
3.67
3.53

Glass name		H-ZF53	H-FK61	H-PK62A
n_d	nd	1.80810	1.49700	1.61800
υ_d	υd	22.7	81.61	63.39
dn/dt coefficient	D0	-1.38E-05	-9.02E-06	-1.90E-05
Mechanical properties	HK(10⁷ Pa)	431	350	391
Mechanical properties	FA	232	385	320
Internal transmittance （τ10mm)	460	0.96	0.998	0.998
	420	0.907	0.998	0.994
	400	0.819	0.998	0.990
Relative refractive index temperature coefficient dn/dT (10-6/℃)	d(-60～-40)	-4.5	-5	-2.1
	d(-40～-20)	-4.2	-5.3	-2.2
	d(-20～0)	-3.8	-5.6	-2.3
	d(0～20)	-3.5	-5.9	-2.3
	d(20～40)	-3.4	-6	-2.4
	d(40～60)	-3.3	-6.4	-2.4
	d(60～80)	-3.3	-6.6	-2.4
	d(80～100)	-3.3	-6.9	-2.4
	d(100～120)	-3.1	-7.1	-2.4
	d(120～140)	-3.1	-7.3	-2.4
	d(140～160)	-3.1	-7.5	-2.4
Chemical Stability	Humidity resistance RC (S) (surface method)	1	1	1
	Acid resistance RA (S) (surface method)	1	2	2
	Water resistance DW (powder method)	1	1	1
	Acid resistance DA (powder method)	1	3	4
	Alkali resistance ROH (S) (surface method)	1	2	1
	Phosphate resistance RP(S) (surface method)	1	2	2
Density (g/cm3)	ρ(g/cm3)	3.32	3.67	3.53