Recent content by Aymangh994

So I have a problem understanding the difference between working distance and the object distance of a lens. For me it is also unclear what the difference between image distance and back focal length. If I want to enlarge the image by 6. How can I calculate the focal length, object distance...

Sketch following questions : 1. should I use the lensmaker's equation to calculate the working distance ? which focal length should I insert in the equation? the total f or f1 ? 2. The distance between the two lenses and the distance between the CCD-Sensor and the last lens ?

I would like to ask if the total focal length matters using two different combinations of lenses but the magnification still the same. Combination 1 : f1= 320mm f2=40mm the total f= 35.5mm and M= 8 Combination 2 : f1= 800mm and f2=100mm the total focal length is f=88.89 mm and M= 8 and how to...

I would like to realize an image of the cantilever. The dimensions are (450x50) microns. I would like to use a self-constructed telephoto lens. This consists of two lenses. The image magnification can be 4 to 8. The magnification of the image is nothing more than the ratio between the two focal...

This is the Illumination source I use : https://www.lasercomponents.com/fileadmin/user_upload/home/Datasheets/laser-modules/albalux-fm-white-light-fiber-coupled-module.pdf

Sorry Object distance is 110 mm. Yes the Camera is homebuilt? So according to th 450 nm i should not be worry about the chromatic aberration ? What do you think about this lens ? https://www.edmundoptics.eu/f/near-uv-nuv-achromatic-lenses/13900/

Sorry Object distance is 110 mm. Yes the Camera is homebuilt? So according to th 450 nm i should not be worry about the chromatic aberration ? What do you think about this lens ? https://www.edmundoptics.eu/f/near-uv-nuv-achromatic-lenses/13900/

Thank you very much for your support and Help. I appreciate it I would like to image a measuring probe using a CCD camera. A simple lens is used instead of an objective. Spherical and chromatic lenses have an aberration. The cantilever is 50 µm wide and should be imaged sharply with its...

Hello everyone, I want to choose a lens, but i am confused about the lens type. I know that chromatic and spheric lenses cause Aberration. So my Choice will be either aspheric or achromatic lens. Since acromatic lens consists of two lenses, it is no thin lens anymore. Or am I wrong about that ...

Hello, since I know that a telephoto lens consists of a front convex lens and rear concave lens, I want to construct a telephot objective by myself. The focal length of this objectiv should be between 88 to 98 mm. Is there a formula to calculate the distance between the two lensen and the...

Hello, Using a CCD camera and simple lenses, the probe of the cantilever and its surroundings are to be imaged. Since the cantilever is 50 um wide and some of the surroundings are to be imaged, the optimal image magnification is from 4 to 8. I therefore used a convex lens with a focal length of...

Thank you very much for these Information. I really appreciate it Actually this helped me a lot so a massive thank you once more

thanks a lot for you valuable information. I have chosen this quadrant detector. https://www.hamamatsu.com/resources/pdf/ssd/s1880_s2044_kpsd1015e.pdf Do you see any problem with that?

Hello, Thank you for you answer. I really appreciate it. I have another question: Is this laser diode https://www.sukhamburg.com/products/details/51nano-N-660-1-M01-P-5-2-28-0-150 a single mode laser ?? I found an article, which is about laser diode in AFM. As recommendation from my professor...

Hello everyone, I don't know which laserdiode and lens system should I choose for my Project. It is all about AFM Microscopy with a cantilever ( Length= 450 um, width = 50 um and thickness= 2um). So as you see it is not a small cantilever. As far as I Know, the larger the cantilever is, a larger...