Bk7 400-700nm Optical Lens with Coating

• After-sales Service: Support After-Sales Service
• Warranty: 2 Years
• Usage: Medical, Optical
• Type: Concave Lens
• Transmittance: 80%-90%
• Shape: Single-lens
• Material: Optical Glass
• Lenses Color: Clear
• Certification: RoHS, ISO9001
• Customized: Customized
• Transport Package: Standard Package
• Specification: Customized
• Trademark: GiAi
• Origin: China
• Production Capacity: 5000/Year

Product Description

Product Description

The plano-concave lens converts a beam of parallel light into divergent light rays, and the divergent light rays are reversely focused on the virtual focal point of the plano-concave lens. The focal length is negative, and one side is flat and the other is concave. Plano-concave lenses diverge a collimated beam of light from a virtual focal point and are commonly used in Galilean-type beam expanders. In use, the concave side faces the direction of the incident light and the flat side faces the focal plane to be processed. Plano-concave lenses have negative focal lengths and negative spherical aberration, which can be used to cancel out the aberrations of other lenses in the system.

Mass production glass type

Diamenter(mm)	Focusing Length(mm)	Black Focusing Length(mm)	Center Thickness(mm)	Edge Thickness(mm)	Redius Curvature(mm)
9.0	-27.0	-28.3	2.0	2.7	-13.9
12.7	-25.0	-27.0	3.0	4.7	-12.9
12.7	-30.0	-32.0	3.0	4.4	-15.4
12.7	-50.0	-52.3	3.5	4.3	-25.7
25.0	-75.0	-77.3	3.5	5.6	-38.6
25.4	-50.0	-52.3	3.5	6.9	-25.7
25.4	-75.0	-77.3	3.5	5.6	-38.6
25.4	-100.0	-102.6	4.0	5.6	-51.5
50.8	-100.0	-102.6	4.0	10.7	-51.5
25.0	-150.0	-125.6	4.0	8.3	-77.2

Application Field

Negative lens, Imaging lens, Beam expander lens, Beam reducer lens, Beam collimating lens, Diverging collimated beam, Collimated diverging beam, Application fields: Telescope, Nearsighted lens, Camera lens, Microscope, Magnifying glass, Light receiver and condenser lens Etc.

Customer Feedback

 

Company Profile

 

FAQ
1. Who are we?
We are 13 year old optical filter/optical lens manufacturer based in Shenzhen, China since 2008. At present,
We have exported to North/South America(35.00%),Southeast Asia(20.00%),Mid East(15.00%),Europe(30.00%). There are total about 400-500 people in our Shenzhen factory(200-300) & Anshan factory(150-200) with annual turnover of more than USD 15Million (Made-in-China Verified).

2. How can we guarantee quality?
90% of our raw material suppliers belongs to top brand internationally brands. Like we import top grade Optorun coating machines from Japan.Our glass raw materials all comes from American Corning etc.

3. Do you have reference customers?
Because of our stable optical filter & lens quality,many international brands also join in our customer list.
There are 3M,Huawei,Dji,Hikvision etc. brands.We warmly welcome serious new customers join Giai family.

4. Why should you buy from us not from other suppliers?
Giai photonics Co.,Ltd is a leading supplier of precision Optical Filter, Optical Lens,Prisms,Camera,ND Filter,CPL Filter,GND Filter,UV Filter for 13 years.
We have 5 doctor degree Photonics specialist. High quality coating machine imported from Japan & well trained staffs &
Every pc of filter glass & lens needs undergoing 7 QC steps before shipping.

5. What services can we provide?
Accepted Delivery Terms: FOB,EXW;
Accepted Payment Currency:USD;
Accepted Payment Type: T/T,PayPal,Western Union;
Language Spoken:English,Chinese

Company Name: GiAi Photonics Co., Ltd. 

Address: F2, Block C, Sheng Chang Gang Industry Part,1st Road,Jinlong,Baolong Industry Zone,Longgang District,Shenzhen, China.