Mirrorganize Optical Technology (Foshan) Co.,Ltd
Topological optimization of lightweight aluminum mirror
Aluminum mirrors are widely used in aerospace and space remote sensing satellites. In order to improve the lightweight rate of aluminum mirrors and reduce the launch cost of commercial remote sensing satellites, a lightweight aluminum mirror with open back, triangular hole structure and three-point support was designed. Based on this structure, firstly, with the minimum mass as the optimization objective, the thickness and layout of the stiffener on the back of the mirror as the optimization...
Sub-aperture stiching and CGH mixed compensation for the testing of large convex asphere
1. Introduction Large convex aspheres play a crucial role in modern optical systems, such as large - aperture telescopes and high - power laser systems. However, the accurate testing of large convex aspheres remains a challenging task. Traditional testing methods often encounter difficulties due to the large size and complex surface shape of the aspheres. 2. Principle of Sub - aperture Stitching Sub - aperture stitching is a technique that divides the large - aperture surface into several...
Dive into Optical Lens Parameters
Aberration: Anatomy of the Root Cause of Image Distortion In an ideal optical system, the magnification should remain constant in a pair of conjugate object planes. However, in real optical systems, this property is only present when the field of view is small. When the field of view is large or even very large, the magnification of the image will change with the change in the field of view, this phenomenon will lead to the image of the object relative to the loss of the original similarity,...
The main parameters of optical lenses
In the field of optics, the parameters of optical lenses play a decisive role in their performance and application. The following is a detailed and in-depth analysis of the key parameters of optical lenses, combined with practical application examples to illustrate. Focal Length: The Controller of Imaging Ratio Focal length, as one of the key elements of the optical system, is defined as the distance from the main point to the focal point. It plays a central role in determining the proportional...
The application of off-axis parabolic mirrors in astronomical telescopes
The main optical properties of a parabolic mirror：it can reflect light rays emitted from its focus into a parallel beam, or reflect a parallel beam of light and focus it at a point. This is because the geometric properties of a parabola determine that light rays starting from the focus will be parallel to the axis of symmetry of the parabola after reflection, and conversely, light rays parallel to the axis of symmetry will converge at the focus after reflection. Structure and DesignA parabolic...
large aspherical mirror testing with CGH and auxiliary lenses
At present, the radius of curvature of the primary mirror in some large-aperture optical telescopes has reached the order of tens of meters. If the surface of the mirror is tested simply by CGH, the length of the testing optical path is not lower than the length of its radius of curvature. Due to factors such as site size and ambient airflow disturbance, it is difficult to achieve high-precision measurement of the mirror surface under these conditions. In order to solve the problem of...
Definition of Optical Freeform Surfaces Common optical surfaces include planes, spherical surfaces, rotationally symmetrical aspheric surfaces, and cylindrical surfaces. These types of surfaces do not fall under the category of freeform surfaces. According to the definition of freeform surfaces, a freeform surface is one that does not possess axial rotational symmetry or translational symmetry constraints. Therefore, one significant characteristic of freeform surfaces is their asymmetry; they...
Manufactureing of 720mm SiC Aspherical Mirror
1.Milling process: the back-side milling of the mirror can be achieved on a general three-axis CNC machining center, while the mirror surface milling requires a four-axis or even five-axis machining center. If a high-precision five-axis machining center is used and appropriate grinding tools are selected, the mirror surface milling accuracy within one meter diameter can reach 10um. 2.Grinding process: grinding mainly removes the tool traces and subsurface damage layer left by milling, and...
How to use CGH to do the test of aspheric mirrors?
CGH stands for Computer Generated Hologram. It is an optical element that is used in interferometric measurement of complex surfaces, such as aspheric optics or freeform optics. CGH is designed using computer algorithms and then manufactured via optical lithography. The holographic interference fringes contained within the CGH element can generate an exact replica of the intended wavefront it is designed to test, thus serving as a reference for testing and measurement of complex optics. Due to...
Design of Ultra-lightweight SIC Scanning Mirror Assembly
In order to realize the lightweight of the (165mm×96mm) rectangular scanning mirror assembly and ensure the surface accuracy of the mirror and the support stiffness of the assembly, a back support method developed by MG-Optics with the integration of cone-sleeve and flexible joints was proposed, and the weight of the mirror assembly designed with this method is less than 0.5kg. Back structure of the ultra-lightweight scanning Mirror The mirror body was made of silicon carbide and the...
Metal aspheric mirror processing technology
The strength of metal aspheric mirror： Metal mirrors can be fully lightweight designed, and optical-mechanical integration installation and adjustment can be designed to simplify the structure of the back support of the mirror. Metal materials are generally obtained by casting. Metal materials have good thermal conductivity, relatively large coefficient of expansion, and are easily affected by temperature. However, metal materials have the advantages of good processing technology and short...
Custom CGH fabrication and test for Aluminum aspheric mirror
Aluminum RSA6061 is easy to process and form, especially with the development of single point diamond cutting (SPDT) technology. The surface accuracy and surface quality of the aluminum mirror processed by SPDT can fully meet the requirements of the imaging quality of the infrared optical system, and can be directly Efficient and economical machining of aspheric surfaces, thus favored by designers. High lightweight rate can be achieved. Aluminum material not only has low density, but also has...
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