Optical Glass Materials

| Model | Refractive Index  | 
									Dispersion (νd)  | 
									Glass Transition Temp. [℃]  | 
									Knoop Hardness [Hk]  | 
									Young’s Module [Gpa]  | 
									Poisson’s Ratio  | 
								
|---|---|---|---|---|---|---|
| TZL20 | 1.9407(@4㎛) | 18.88 | 417.8 | 311.1 | 54 | 0.274 | 
| TZNL9 | 2.0031(@4㎛) | 18.88 | 391.3 | 311.1 | 58 | 0.215 | 
| GL183 | 1.8374(@587.6㎚) | 35.70 | 551.1 | 628.4 | 103 | 0.313 | 
| GL186 | 1.8600(@587.6㎚) | 34.16 | 547.7 | 624.4 | 103 | 0.313 | 
| GL188 | 1.8821(@587.6㎚) | 31.81 | 545.2 | 502.8 | 83 | 0.316 |