back to top
My wish lists
Save your wish list
If you want to add more content to your wish list, simply log in. If you do not have a user account, please register for the Hanser Customer Center.

» Do you already have a user account? Please log in here.
» Don't have a user account yet? Please register here.
Your wish lists
If you want to use your wish list during your next visit, simply log in. If you do not have a user account, please register for the Hanser Customer Center.
» Do you already have a user account? Please log in here.
» Don't have a user account yet? Please register here.

« Back

Your advantages at a glance

  • One login for all Hanser portals
  • Individual home page for faster access to preferred content
  • Exclusive access to selected content
  • Personal wish lists on all portals
  • Central management of your personal information and newsletter subscriptions

Register now
Deutsch
Bookmark Bookmarked
02-14-2018

Optical Lens

OPTICAL LENS (© European Patent Office)

An optical lens includes a first lens group and a second lens group. The first lens group includes a first lens, a second lens, and a third lens arranged in sequence from a magnified side towards a reduced side. Refractive powers of the first lens, the second lens, and the third lens are negative, negative and positive respectively. The third lens is a glass lens. The second lens group is disposed between the first lens group and the reduced side. The second lens group includes a fourth lens, a fifth lens, and a sixth lens arranged in sequence from the magnified side towards the reduced side. Refractive powers of the fourth lens, the fifth lens, and the sixth lens are positive, negative and positive respectively. The first lens, the second lens, the fourth lens, the fifth lens and the sixth lens are plastic lenses.

Document: EP3282298A1
Click here for the full patent text at DEPATISnet [PDF]
Published patent application
Disclosure date: 08-03-2017
Publication date: 02-14-2018
Applicant: CORETRONIC CORP, TW
Inventor: CHUANG FU-MING, TW ; LO HSIN-HSIANG, TW


© European Patent Office. This information was obtained from the espacenet of the European Patent Office. There is no guarantee of its correctness or curency. For additional information, please use the research at espacenet. It is possible to determine the current legal and procedural status of patents and utility patents/models at http://worldwide.espacenet.com/ kfree of charge.

Job Advertisements

Looking for a new challenge? Check out our jobs market!

Job Advertisements

Newsletter

Would you like to subscribe to our Newsletters on plastics technology and profit from the latest information?

Subscribe here

Subscribe here