Manufacture Capability
2020-05-22 14:36:24
Beijing Delfa have the capability to ensure that all of our products quality are reliable and consistent because we have the high-teach staffs, consummate and scientific management system, advanced manufacturing equipments and inspecting instruments, using commonly standard for testing quality.
Delfa can supply products with different precision according to customer’s request:
Fabrication Capabilities
Surface Tolerances | Standard | Precision | Mfg. Limit |
SurfaceQuality (Scratch/Dig) | 60/40 | 20-10 | 10-5 |
Surface Power (waves @633nm) | 2-3 | 1-2 | 0.5 |
Surface Irregularity (waves @633nm) | 0.25 | 0.1 | 0.1 |
Surface Flatness (waves @633nm) | 2-3 | 0.1 | 0.05 |
Dimensional Tolerances | Standard | Precision | Mfg. Limit |
Diameter (mm) | +0/-0.1 | +0/-0.05 | +0/-0.01 |
Length & Width (mm) | +0/-0.1 | +0/-0.05 | +0/-0.01 |
Thickness (mm) | +/-0.15 | +/-0.05 | +/-0.01 |
Clear Aperture (%) | 95% | 100% | 100% |
Contrition (edge thickness difference, mm) | 0.15 | 0.05 | 0.01 |
Wedge (degrees) | +/-10’ | +/-5’’ | +/-2’’ |
Parallelism (degrees) | +/-10’ | +/-5’ | +/-2’’ |
Angle tolerances [prisms] (degrees) | +/-0.5° | +/-5’’ | +/-2’’ |
Bevel | 0.2x45° | 0.05x45° | 0.01x45° |
Machine & Equipment Capacity
Quantities & Types | |
Polishing machines | Precise optical polishing/30 sets |
Coating chambers | Vacuum coating machine/ 5 sets |
Test equipments | 1.Horizontal Interferometer and FUJINON interferometer 2.Spectrophotometer L950 (PerkinElmer) 3.Infrared spectrometer Spetrum 2 (PerkinElmer 4.German TRIOPTICS OptiCentric 101 Basic M Center Deviation and Focal Length Measuring Instrument 5.TRIOPTICS PrismMaster 300 precision goniometer 6.Digital wavefront laser interferomete 7.Universal tool microscope
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Compliance with Standards:
Our optical components are manufactured in strict accordance with international standard ISO 10110-7, as well as U.S. military standards MIL-C-48497A, MIL-PRF-13830B, MIL-C-675C, MIL-C-13508C, and MIL-C-48616.
For the blackening of optical components, we use Japan's GT-7 or equivalent standard coatings.
For bonded components, we use U.S. Noland-61 adhesive or adhesives as specified by the client.
Other Capabilities:
-We use spherometer or mold to ensure the product's radius of curvature.
-We use an interferometer to measure and evaluate the radius and surface shape of the test product.
-We have fringe analysis software (Chinese made).
-Our standard coatings is AR coating from 350-1000nm and IR AR coating from 3-5um, 8-14um.
-We perform Mil standard on your coatings.
-We can design and coat custom multilayer coatings.
-Our cementing capabilities is double and triple.
-We use AQL 0.65 to judge the size of defects found in surface quality inspections.
Reticles
Beijing Delfa is making single and bonded reticles for customers. Please contact us for more details.
Aspherical Lens
Beijing Delfa is making coated aspherical lens. The material can be Germanium, ZnSe, ZnS, etc. Please contact us for more details.
Optical Encoder
Beijing Delfa started to make mass production of OEM optical encoders for customers world wide.
