We are proud to announce the new logo as part of the ongoing evolution of our company’s brand. The new logo：        The new logo demonstrate that : Optolong is located in Kunming city Yunnan province China. Yunnan is famous for various and changeable cloud. All the Chinese people call Yunnan province ‘the …
Read More

We are happy to announce that new cube and holders U-FF of Olympus is released. Now Optolong Optics could offer U-MF2 and U-FF cube for client. Welcome for your inquiry and order. U-FF can be fixed on below series： BX3 Series – BX53, BX63 IX3 Series – IX53, IX73, & IX83 Every fluorescence filter cube …
Read More

Dear Customers, Due to our company business development, our company’s English name has changed from “Yulong Optics Co., Ltd” to “Optolong Optics Co., Ltd” since 9/29th/2016. Our business, service and legal relationship keep the same. Thank you for your support and understanding. If you have any problems, please feel free to contact with us! Kind RegardsOptolong …
Read More

Dear Customers, Please be informed that effective from 1st of September, 2016 we are moving to following new Address. New Office Address: Room 1523,Building 7, Phase II, Lenovo Tech Center, Kepu RD， Kunming City, Yunnan, China. Post Code: 650106  New Factory Address:  A-3-102 Building 9, HengChen Industrial Park,  Nanhuan Road, Yanglin Industrial Zone, Songming Country,  Kunming …
Read More

The 17th China international optoelectronic exposition (CIOE2015) held in shenzhen convention and exhibition center in August 31,2015 to September 3rd. Yulong Optics attended the optoelectronic exposition, through participation and learning, learned the trend of the development of the industry, and meet with the customer, after the communication with customer.we learned the market requirements of our …
Read More

Click on this link to download the  English version

On April 4, 2015, the 11th street astronomical night  held in Green Lake of Kunming, sponsored by the amateur astronomers association of yunnan province, OPTOLONG as the trustee of the amateur astronomers association sponsors this activity.Yunnan amateur astronomers association set the most heavyweight astronomical telescope – caliber 40 centimeters “mobile” observatory for public viewing “red …
Read More

On March 21, 2015, Llijiang Gaomeigu of Yunnan,stargazers from Taiwan, Beijing and yunnan gathered here, engaged in a stars chasing journey racing to the time – messier marathon communication meeting.In astronomical circle, there is a love, even travelling mountains, even stay up late, as long as able to chase the stars footprint, fans willing to …
Read More

Team, promote you to go farther! The main task of the annual meeting , is rich and colorful community activities and outdoor development training, table tennis, and kicking shuttlecock, bound foot race, guess what, chess, tug-of-war, rock climbing.These activity, we all have fun and relax, activities also promote the feelings between people.OPTOLONG is a warm …
Read More

OPTOLONG ND5 Filters Test By View the Sun …
Read More