| Comparing to the original lighting, nowadays the lighting had been given cultural characteristics of the human characteristics as "light, space and environment". The light had been added many human attributes. Such as the control of color temperature, stage, television and film optical landscape color design. No matter what the application of light, human beings always rely on the optical instrument (system) to control the light. In general, the optical system consists of light source and optical element. The present work is based on the application of light emitting diode, the synthetic spectrum and compensation method are adopted. First, control the color temperature, brightness and color index of the light source. The parameters of the light source are adjusted to achieve a more comfortable and comfortable light environment space. Furthermore, using aspheric optical system to improve the optical quality and imaging quality of the imaging optical system. Finally, related to free-form surface design method based on non-imaging optics to obtain better beam, energy transfer and encounter control.First, the light source color temperature plays an important role in human activities. According to the psychological and physiological changes, human choosing the suitable light source to create a most comfortable environment. White LED with high color rendering index and tunable color temperature play more obvious effect in the commercial lighting and home lighting. Basing on warm white, red, blue, green color, through the synthetic spectrum and compensation method has been obtaining the light source with tunable color temperature and high color rendering index. The method of tunable color temperature has been offered basing warm white LED, red LED, blue LED, green LED.Second, the miniaturization and integration of the photoelectric sensor device makes the optical system developing towards the direction of miniaturization and integration. Aspheric surface lens has been used in imaging optical system which can correct the aberration and reduce the volume of the optical system. In the imaging system, the aspheric optical lens is generally used to correct aberrations and reduce the volume of the optical system. Since the advent of the first camera phone, smart mobile devices with high resolution imaging capabilities have become the mainstream of the world. In fact, a lot of high pixel camera lens is implemented by the software interpolation algorithm, which is difficult to meet the definition need at detail processing. According to the main configuration, combined with the focal length f’, the relative aperture D/f and the field of view angle determine the optical basic parameters. The initial structure parameters of the camera lens are calculated by the PW method. The aspheric surface is used in the optimization of the system. Achieving a micro-photographic lenses with large aperture and high resolution. Comparing to the general optical systems in market with same field of view, the flux of this optical system is improved by about 20% and optical resolution improved by about 11%. At the Nyquist limit frequency, most of the field of view of the MTF value is greater than 0.3.Finally, there are two methods for the design of free form surface optics. There are two methods for the design of free form surface optics. One is the experience method, which is gradually closing to the ideal free-form surface by repeatedly modifying the parameters of optical devices and using optical analysis software to simulate the corresponding lighting results. Another is establishing free-form surface by numerical solution of analytical equations, which according to the relationship between the direction of incident light and the direction of refractive light. Basing the light field distribution of LED design reflector, which is continuous, and free-form lens. The optical system had been analysis in TRACEPRO. The conclusion of simulation indicating the optical system achieving uniform illumination. |
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