Whether you deal with optical components occasionally or professionally use them, sooner or later there is a high chance of you coming across an optical component that isn’t obvious. So, rather than keeping it aside, it is important for you to find out what its performance and properties are. A great way to understand the characteristics of an optical component for optics manufacturing is by placing the same into a high accuracy device like an interferometer. However we will assume you only have access to standard tools. Then how can you summarize an optical component? Focal Length and Diameter One of the most significant aspects of an optical component is how big it is and how far away it can project an image plane. You will come across some optics that doesn’t even have an image plane; instead they produce a virtual image. However, to find the focal length of a lens, you simply need to hold the lens above a desk or another flat surface and allow light from a distant source to pass through the lens. If the lens is convergent or rather if it has a “real image” of focus, you will see a focused return on the desk or surface. For the sake of clear understanding, let’s say you take into consideration light shining from the ceiling, passing through the lens, and focused onto a desk. Adjust the lens until you get a clear focus. Now, you measure the distance from the desk to the center of the lens. This is known as the focal length for that side of the lens. You should repeat the process to measure the other side of lens. Remember, each side has a different focal length! For lens molding services, you also need to measure the diameter of a lens. For this, use a ruler. After taking note of these two measurements, you will have a clear understanding of the lens’s performance. To note, a more specific measurement of lens is related to the physical offset of the peak center point of the lens versus its sides. In a convex lens, the maximum recess point is what is measured. You can use a spherometer to measure this radius. To measure lens of a small diameter, you can construct a small spherometer via the following method:
For creating standoffs, you can use a drill press to press silver BB’s into Allen head cap bolts. The BB’s are used as the bearings which would contact the base of the lens. Next you have to take an aluminum flat stock and drill a small hole in the center. Then use a caliper to measure the diameter and score a circle on the stock. Finally, index 3 holes at 0, 120 and 240 degree marks. Drill a tapped at these points to accept the Allen screws. Finally open up the center hole to accept a dial indicator. Using spherometer is easy if you place the device on a flat surface. You can also place the lens under this device. Article is provided by Optics- Sourcing. To compare your quotes from qualified optic vendors visit - http://optics-sourcing.com.
5 Comments
12/21/2022 01:28:55 am
İnstagram takipçi satın almak istiyorsan tıkla.
Reply
1/8/2023 06:07:17 am
100 tl deneme bonusu veren siteleri öğrenmek istiyorsan tıkla.
Reply
6/30/2023 05:31:30 am
En iyi amasya ilan sitesi burada. https://amasya.escorthun.com/
Reply
Leave a Reply. |