Precision Scales
Maximize performance of any optical encoder with precision glass scales by VC America. Rotary and Linear scales are manufactured using soda-lime glass with chrome reflective and absorptive layers optimized for 630-640nm (Red LED), with dimensional precision and low defect density.
Standard scales provide opportunity for fast evaluation and support production and we manufacture to customer specifications for unique patterns and dimensional requirements.
| ScaleSeries | Type | Pitch/PeriodAccuracy | Maximum Dimension(mm) | Description | Mounting | ||
|---|---|---|---|---|---|---|---|
| Local | Total | ||||||
| Precision Linear Scales | A | ±1µm | ±2µm | 400 | Length | Reflective chrome with bottom side absorptive layer | Epoxy or PSA |
| E | Enhanced Reflective chrome with bottom side absorptive layer | ||||||
| Precision Rotary Scales | G | 150 | Diameter | Reflective chrome on clear glass | Epoxy and UV adhesive | ||
| A | Reflective chrome with bottom side absorptive layer | Epoxy | |||||
| E | Enhanced Reflective chrome with bottom side absorptive layer | ||||||
| C | Reflective chrome with bottom side absorptive layer and clear center zone | Epoxy and UV adhesive | |||||
Linear scales are cut to dimensions with saw and laser cutting.Rotary scales OD and ID are sawed and edges may be straight cut or beveled with chamfer or rounded edges.
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| Series | Description | VC America Recommendations | Status | Datasheets |
|---|---|---|---|---|
| Rotary | Precision Glass Rotary scales | Active | Request | |
| Linear | Precision Glass Linear scales | Active | Request |
