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Mazy, E., Defise, J.-M., Plesseria, J.: INTEGRAL Optical Monitoring Camera Stray-Light Design. In: SPIE Conference (1998) As can be seen from Fig. 5 the second lens and the third lens, as well as the fourth lens and the fifth lens are laminated in the initial structure. It is necessary to separate the second lens from the third lens and the fourth lens from the fifth lens to prevent degumming in space environment. Thus, the structure of the optical system needs to be optimized. Furthermore, the small volume and mass of star sensor can be reached by minimizing the radial and axial dimensions of the lenses. By considering optical parameters in Table 3, Double Gauss system is designed and optimized by ZEMAX optical design software. This optical system has six lenses (twelve surfaces that all of them are spherical), and its overall length is 93.49 mm. It includes fewer types of lenses and has wide FOV, than the congeneric optical systems, and its structure is simple. Therefore, the optical system is minimized in volume and mass, and its manufacturing process is easier. Besides, fully separated optical structure is designed to prevent gluing surface from degumming in space orbit, and it meets the requirements of design and practical engineering for small star sensor. Tolerancing of optical system
If you look at almost all of the new after market focusers, they either have no baffle at all or a minimal one at best. And in the ones that do not have one, they are usually threaded or grooved on the inside to reduce scatter. Both glass and polycarbonate are acceptable under Red Tractor standards, but the windows must be double-glazed and, if using glass, it must be toughened on the inside.
2. Unsealed windows
Whether the windows are clear or opaque is normally driven by the processor – some prefer opaque windows. Hu, X., Wang, W., Hu, Q., Lei, X., Wei, Q., Liu, Y., Wang, J.: Design of CASSEGRAIN telescope baffles with honeycomb entrance. Chin. Opt. Lett. 12(7), 072901 (2014)
According to spectral response of detector and star spectral class, chromatic aberration must be corrected. From the above comparison and contrast of the baffle trims and reflector trims, you can now find the ideal trim that will suit your space. Even though they are meant for enhancing the lighting illuminations, they suit different spaces. This is because the baffle trims are designed to dim the super bright lights to make them soft and friendly to the eyes. On the other hand, the reflector trims will increase the brightness of the lights by reflecting it further. Due to this difference in how they work, these trims are meant for different spaces. The reflector lights are needed in places where higher light intensity is needed like the kitchen and hallways. The baffle trims are applicable in spaces where low light is needed and rooms with the lower ceiling. Despite being used on the recessed lights, the baffle and reflector trims have got certain differences like; a. Area of Applications Eyeball Trim – Vaguely similar to our friend the baffle, eyeball trim is used with recessed light fixtures to grant the lamp an adjustable angle. The bulb sits in the “eyeball”, which often can be rotated vertically up to 40 degrees and horizontally up to 360 degrees, with a traditional trim surrounding it. The built of these two trims greatly differs as they function differently. For the reflector trim, it needs to push out more light for increased brightness. This is why the interior has been built from smooth and highly polished material. The quality of material used in the built of the trim is highly durable to extend the lifespan of the trim.Nejad, S.M., Madineh, A.B., Nasiri, M.: Baffle design and evaluation of the effect of different parameters on its performance. Optik-Int J Light Electron Opt. 124(23), 6480–6484 (2013) The same also applies to the reflector lights as they aid in improving the illumination though by increasing the brightness. It will improve the overall lighting system whenever high light intensity is needed in the room. This makes it great for rooms with higher ceiling boards and places like the kitchen that will require more light for better illumination. b. Conceals and Decorate the Recessed Lights Most of the recessed lights now have the baffle trim feature to enhance the lighting system. The baffle trim has a ribbed interior, which is meant for absorbing the lights to make it friendly to the eye. With this, you can use the light for carrying out different activities like reading. But all sheds are not created equal, and installing windows incorrectly, or using the wrong materials, could mean a lot of money spent and a shed that is still non-compliant. Park, J.-O., Jang, W.-K., Kim, S.-H., Jang, H.-S., Lee, S.-H.: Stray light analysis of high resolution camera for a low-earth-orbit satellite. J Opt Soc Korea. 15(1), 52–55 (2011)
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