Product type: Achromatic Lenses. Application: Lighting, Medical, Optical, Photography. Model: TT Lens 69.
Overview
D25.4 (BBAR) Coated Achromatic Triplet Optical Glass Lens for Telescope is an optical lens made from Optical Glass. Listed geometry: thickness as Required, single-lens shape. Optical / electrical data: wavelength 400 – 700nm, transmittance >95%. Coating: HMC; surface quality 40-20. Listed for Lighting, Medical, Optical and Photography applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Optical Glass |
|---|---|
| Type | Achromatic Lenses |
| Shape | Single-lens |
| Thickness | as Required |
| Wavelength Range | 400 – 700nm |
| Transmittance | >95% |
| Coating | HMC |
| Surface Quality | 40-20 |
| Usage | Lighting, Medical, Optical, Photography |
| Model NO. | TT Lens 69 |
| Lenses Color | Clear |
| Focal Length Tolerance | +/-1% |
| Focal Length Specification Wavelength | 587.6mm |
| Centering | <1aremin |
| are designed for 1 | 1 conjugate ratios and utilize symmetry to correct for aberrations. |
| Supplier | Tianjin Tengteng Optoelectronic Technology Co., Ltd. |
Technical data
| Name | D25.4 (BBAR) Coated Achromatic Triplet Optical Glass Lens for Telescope |
|---|---|
| Size | D25.4mm |
| Coating | BBAR or as required |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — listed as “+/-1%”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “40-20”; quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — listed as “HMC”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see AR-Coated Glass Materials for High-Transmission Optical Parts. How parts like this are machined and finished is covered in Optical Glass Polishing for High Clarity Surfaces. For an application example, read AR Coated Glass for Appliance Touch Screens: Specs and Selection. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is AR-Coated High-Transparency Optical Glass.
