DIY Double Cemented Telescope 70 mm Objective Lens
Original price was: $15.00.$9.00Current price is: $9.00.
40% Off
Support global shipping！This is customized optical lens.The Achromatic Lens is used for binocular&monocular Telescope，etc.
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Model:A-001
Size:φ60,φ140,etc
Price:by case
Min.order Quantity: 1 pieces
Lead time:1-4 weeks or depends on order quantity
Description
An achromatic lens can be defined as a lens which is made by a combination of two different types of lenses carrying different focal powers in a manner such that the images formed by the light of both the combined lenses are free from chromatic aberration or achromatism.
An achromatic lens or Apochromat is a lens designed to minimize chromatic aberration and spherical aberration. It belongs to the achromatic lens group. The most common form of achromatic lens is the double lens, which is made of two different types of glass with different dispersion capacities. The two lens elements are combined so that the chromatic aberration of one is offset by the chromatic aberration of the other.
Specification of Achromatic Lens：
Material: BK7, LaSFN9 glass,Ohara S-LAH71 glass or other optical glass
Surface Quality: 20-10
Diameter: 1.8mm-140mm
Specification
| Material: | Optical Glass |
| Material Surface Flatness | < λ/5 @ 633nm |
| Scratch/Dig | < 40/20 (both sides) |
| Eccentricity: | ≤ 1arcmin |
| Focal Length Tolerance | < ± 1% |
| Diameter Tolerance: | < + 0.00/ – 0.02mm |
| Thickness Tolerance: | < ± 0.05 |
| Clear Aperture: | ≥ 95% of diameter |
| Coating: | AR OR BBAR |
| Diameter Range: | 5~260mm |
Inspection:Each lens be tested before packing,a formal tested report will be provided.
Application of our lenses:avionics,astronomy,military,medical,scientifics,laser etc…
Q1:Can you send me free samples or Can i have an sample order ?
A: Yes, We accept sample orders, and we’re also willing to send you free sample to test and check its quality . if we don’t have the item in stock , then you could place an sample order.
Q2: How many days can i get my package after placing order?
A: If the order needs customized also the quantity is big. it will take around 10-30 wroking days to produce then shipping.
Q3: OEM services available?
A: Sure, please send us your design paper on platform to confirm more details information.
Q4:We have a commercial project,Can you help me offer an optical design solution ?
A:Yes, we have professional experts who are engaged in optical design for many years , please send us more detail of your project,we will supply our most suitable solutions for you.
Q5: What shipping methods do you have?
A: For small quanities or sample could by express such as: Fedex, UPS, DHL, EMS, etc. Large scale quantity in your demands:by sea/train ,or by air.In your request
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