Optical Dome

Optical Dome

Optical dome




Optical domes are lenses with two concentric spherical surfaces. Sometimes they are referred to as bent plane parallel plates. Consequently it is usual to define parallelism between two surfaces as the maximum thickness variation between the two surfaces. In perfect domes, the convex radius equals the sum of the dome thickness and concave radius. Optical domes are used for underwater photography, as a part of a protective case. Also they are as a part of sun tracking used in solar collectors.



-Primary advantages:


CLZ Precision Optics can produce optical domes made of quartz, optical glass, silicon, etc., whose diameter can be up to 124mm. The angle can be 180 degrees and dimensional tolerances are +/-20 microns. The optical domes are manufactured on a highly repeatable 4-axis spherical machining center. They exhibit less than 20 microns wall thickness variations.


-Why should I buy optical domes from CLZ Optics?

1. In our inventory list, you can find optical domes with different specifications.

2. According to diverse drawings from different customers, we have already produced kinds of custom domes for various applications.



-Where optical domes apply to?

1. Optical domes can be used in high pressure viewports in submersibles.

2. Optical domes can be applied to high-quality, high-precision pyrgeometers.

3.Optical domes can be used for underwater ROVs imaging, sensing and exploration.

4. Optical domes can be utilized in harsh environments to protect other optical components.


Optical Dome Manufacturing Specifications:


Diameters of optical domes are ranging from 15 mm to 280 mm with precision tolerances.

- Manufacture High-precision optical domes, diameter from 15 mm to 125 mm.

- Manufacture Commercial optical domes, diameter from 125 mm to 280 mm.


Surface quality:

40-20 for high precision optical domes.

80-50 for commercial optical domes.



< 0.02 mm for diameter of optical domes less than 50 mm.

< 0.05 mm for diameter of optical domes less than 125 mm.

< 0.2 mm for diameter of optical domes large than 125 mm.


Chamfer or Bevel:

For the optical dome with a diameter less than 125 mm, no chipping or cracking will occur after chamfer. Chamfer tolerance of the underwater domes is ± 0.1 mm.


-What are the materials of optical domes

Optical glass, such as N-BK7, N-K5, N-BK10, H-K9L

Fused Silica, diameter less than 125 mm

Silicon, diameter less than 100 mm

Sapphire, diameter less than 30 mm


Delivery time:

1. Domes in stock: 1 week.

(Please check the stock of optical domes on our website www.clzoptics.com)

2. Custom domes: 6 weeks.


History of optical domes from CLZ Precision Optics

-In 2012, CLZ Precision Optics manufactured the first custom dome for a Chinese customer.

-In 2013, CLZ Precision Optics exported the first batch of optical domes to Australia.

-In 2014, CLZ Precision Optics produced high-quality fused silica optical domes for a well-known meteorological manufacturer in China.

-In 2014, CLZ Precision Optics exported optical domes to Europe for the first time.

-In 2015, CLZ Precision Optics produced the first custom, underwater optical domes, and exported this optical domes to the customer in the United States.

-In 2017, CLZ Precision Optics produced optical domes for a well-known Japanese meteorological manufacturer.

-In 2018, CLZ Precision Optics has produced diverse optical domes with more than 30 kinds of specifications. The total number of optical domes we’ve manufactured is more than 15,000.

-In the same year, CLZ Precision Optics manufactured high-quality optical domes with a concentricity less than 0.02 mm.

-In 2020, CLZ Precision Optics developed a silicon dome for Pyrgeometers.


-Which exhibitions have we attended?

China International Optoelectronic Exposition


SPIE Photonics West

LASER-World of Photonics

Photonix Japan

Meteorological Technology World Expo



CLZ Precision Optics Co., Ltd. sincerely thanks the first Chinese customer who chose us, making us one of the few manufacturers of optical domes. We are also grateful to the first Australian customer who chose our products, making our products exported to foreign markets for the first time.

Although the market for optical domes is small, optical domes are one of the main products of CLZ Opticsbusiness, accounting for 40% of our turnover. Through years of efforts, CLZ Optics has become a competitive manufacturer in the optical domes market. Here, we have to thank the cooperative partners for their trust and support. We will continue to provide our customers with high-quality optical products in the prospective cooperation.