Is there a significant difference between constraining your focal length by using a solve, or optimizing for it with the EFFL operand?
Best answer by Sarah.Grabowski 6 July 2020, 23:30
For any parameter that can be defined through the combination of a variable and an operand or by a solve, it is generally better to use the solve wherever possible. In the case of constraining the effective focal length, you may choose to use a marginal ray angle solve on the radius of the last surface to calculate it from the entrance pupil diameter and the target focal length. The time that it takes for the optimization routine to run is proportional to the square of the number of operands in the merit function, so using solves to reduce the number of variables is best practice to prevent the optimizer from getting bogged down. Plus, in these cases where you can compute the value you want directly through a solve, using optimization just isn’t necessary.
Already have an account? Login
Enter your username or e-mail address. We'll send you an e-mail with instructions to reset your password.
Sorry, we're still checking this file's contents to make sure it's safe to download. Please try again in a few minutes.
Sorry, our virus scanner detected that this file isn't safe to download.
Do not provide any information or data that is restricted by applicable law, including by the People’s Republic of China’s Cybersecurity and Data Security Laws (
e.g., Important Data, National Core Data, etc.).