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Yeah the total effective power will change

@@Qaidi_804 thanks

You're welcome

Thanks for your comments

Please watch the example after minutes 8:00, the position of the EP needs o be calculated. It is like imaging, you consider the apperture like an onject and image it thriugh the lens.

Can you elaborate more?

The Maksutov telescope is a kind of telescope that consist of a mirror and slightly curved lens. I highly recommend you to find a patent or an optical design close to what you want to make and from that point start optimizing it. Take a look at his papaer, it might be helpfull. You can also direclty email me for any question that I might be able to answer. Addolorata Marasco, Antonio Romano, Maksutov’s cameras and telescopes, International Journal of Engineering Science, Volume 45, Issue 1, 2007, Pages 34-40, ISSN 0020-7225, doi.org/10.1016/j.ijengsci.2006.07.014. (www.sciencedirect.com/science/article/pii/S0020722506002035)

@@opto-mechademics7234 thank you for your answer. I'll read the paper as soon as I can, I'll get in touch with you If I need. Thank you very much. To add a little bit more context, I have been assigned to ther optical payload development team for my group project, I need to design the optical instrument for a 3U cubesat for Earh observation, I already have the sensor and to achieve a 4m or less GSD I have been told to build a Maksutov telescope. It is the first time using Zemax Opticstudio for me.

@@opto-mechademics7234 Thank you very much for your answer. I'll read the paper later today. To add a little more context: I have been assigned to the optical payload system for my University group project, I have to design an instrument to mount in a 3U cubesat for Earth observation with a GSD of 4m or better. I already have the image sensor (Sony IMX342LQA) and I have been told that the best way to fulfill the requirenments is to adopt a Maksutov-Cassegrain telescope configuration. I have just started to use Zemax opticstudio from zero and was searching for basic tutorials. I'll get in touch with you if I have questions, thanks again.

Zemax has one of those in the built in examples! You can use it to try changing the elements and optimize!

@@testboga5991 today I'll try. The cubesat requires me to make the primary mirror a square and the secondary mirror a rectangle, have to find a way to do that too

Hi Please watch this th-cam.com/video/S9RyHT_pg5U/w-d-xo.htmlsi=nFGNpRt7NsEZKu4X

@@opto-mechademics7234 how to combilne the design, opthalmoscope with the eye, simulate in zemax sir

I'm delighted to hear that you're interested! If there are any other topics in optics and optomechanics you'd like to explore, please don't hesitate to let me know. I'd be more than happy to create a video on those subjects as well.

dear thankyou for the offer, can you give me example of design for smartphone fundus camera design in zemax, the combination of smartphone camera, light source of LED, lensa aspheric and human eye, i need to learn that thankyou dear@@opto-mechademics7234

dear, i need example how to make a optic design for smartphone fundus camera: align in one line: camera handphone, light source of LED, Aspheric Lens 20D, and human eye, this smartphone fundus camera is for take a picture of retina, thankyou so much dear @@opto-mechademics7234

Hi, for the surface two of your biconvex lens just put the thickness as your distance. It is not very accurate, but accurate enough to give you the correct initial design. Theoretically, for a thick lens, you need to use the principal plane as representative of the location of your lens. Since your first lens is a biconvex lens the principal plane of your lens is at te center of your lens.

Hi Thank you very much. Yeah that is my plan. I plan to make a whole series on precision mechanics and optomechanical design. Actually I am working as an optomechanical engineer, but I have a PhD. in optics. When I started this channel I wanted to just talk about precision machines and opto-mechanical design. But as it moves forward, some people asked me to upload more about optics. Definitely I will upload lots of video on optomechanical engineer design and tooling. What is your field?

Thanks for your comments 🙂

Sure, I will provide more videos

th-cam.com/video/AYC8xuyILq8/w-d-xo.htmlsi=mQ1U4ETXfuwf_Qpg Hey Maxwell, Please watch this video for more details

Thanks Can you elaborate more. If you tell me the exact things that you want to do I might be able to help.

Thanks

Thanks

Glad you liked it

As this system operates as an afocal system, it doesn't incorporate the CCD or the eye for the image plane, making it challenging to estimate the depth of field. To gauge the working distance, defined as the distance from the object to the front lens, it's necessary to estimate the depth of field on the CCD or the eye's retina. This estimation involves adjusting the object's position at a specific distance from the nominal point and observing the resultant impact on the spot size. When the image consistently maintains sharpness, this position represents the working distance of the lens.

@@opto-mechademics7234 Thank you so much information. Could you please upload a video explaining afocal design videos in detail, I would be very grateful.

@@john-vm8jt In order to have a good estimation I think I need to include the optical model of our eye also. I will try to model an optical model of eyes and then we can use it to optimize the afocal system together with healthy eyes.

@@opto-mechademics7234 I'm looking forward to the new video

The current setup is a basic system to begin with. To incorporate additional elements, we'll need to introduce more components. The advantage of the Galilean design, utilizing a concave lens as the eyepiece, lies in its simplicity and compactness. However, in the Keplerian system where a convex lens serves as the eyepiece, the resulting image is inverted, necessitating more optical elements to erect it. One potential solution involves the use of a Schmidt-Pechan prism to rotate the image by 180 degrees. Consequently, the system would consist of three primary elements: the objective lens, Schmidt-Pechan prism, and eyepiece. Creating an optical system from scratch can be challenging. I recommend exploring existing patents, papers, or similar systems as a starting point, and subsequently optimizing that system in Zemax for your specific needs.

@@opto-mechademics7234 Thank you for information !

In an afocal system, the absence of a focal point is a defining feature. A useful approach is considering both the object and image at infinity, allowing us to determine the system's magnification, often given by the ratio of the second lens' focal length to the first (m = f2/f1). A rule of thumb for initial lens placement is a distance approximately equal to the sum of their focal lengths (d ≈ f1 + f2). However, optimization is key to refining the system's performance, addressing aberrations and enhancing image quality. I will work on a tutorial on designing an afocal lens system. This tutorial aims to illustrate the fundamental principles involved and provide step-by-step guidance, empowering individuals to navigate the intricacies of creating optimal afocal optical systems. Stay tuned for the tutorial's release.

@@opto-mechademics7234 Thank you so much information I am looking forward to new tutorials

@@opto-mechademics7234 how can I contact you ?

@@alpertunga4129 Hi the new video is uploaded. I hope you like it please let me know if you need furthur more help. th-cam.com/video/P2yXZ5VOJJ0/w-d-xo.htmlsi=OcvlRHs2b7XACVCV