If you often use optical lens in your business or your hobby, at some point you probably use optical lens manufacturers to get the exact lenses you need.
That being said, finding optical lens manufacturers that are affordable and that do good work is getting more and more difficult. Especially as so many American companies are now over priced.
There is one good place left where you can find optical lens manufacturers, however, and that place is the Internet.
Why look for optical lens manufacturers online? -- One of the main reasons many people now buy their optical lenses online is cost. Particularly if they shop outside the United States.
Another reason is, when you shop online, you are immediately able to find thousands of companies that manufacture lenses and that can often get you the specific lens you want far cheaper and with much less hassle than doing so at your usual supplier.
Where to look for optical lens manufacturers -- While shopping on the Internet for lenses allows you to buy from just about any manufacturer in the United States, many people are now moving away from American companies due to the high cost.
Looking at Chinese companies, however, will often get you exactly what you want. Affordable lenses that are very high-quality, and that were manufactured using the exact same techniques and equipment as any American firm.
The only difference is they are usually cheaper, and they can often be produced faster.
How to find a reputable company -- The easiest way to do this is to join a chat room dedicated to people who use lenses in their business or as part of their hobby.
Start a new topic and ask for advice on which Chinese lens manufacturers to consider ordering from. You may be surprised at the huge response you get.