Abstract: In many consumer and professional plastic lenses have potential applications because of cost, weight and aspherical shape. However they suffer from a big disadvantage: large amount of focal shift as function of temperature. In particular for bar code scanners, focal shifts due to temperature changes have huge impacts on the function of the scanner. One possibility to improve the temperature behavior of such lenses is to turn them into so- called hybrids: a combination of a refractive and a diffractive surface. This way a temperature compensation can be achieved that reaches the level of glass lenses. In this paper design and manufacturing considerations for such a lens will be given. This includes proper material choice and mechanical design. The lens is temperature compensated over a range from $MIN@230 degrees-$PLU@60 degrees C. Operating at 650 nm and having a focal length of 4 mm, makes it extra difficult to produce such a lens with sufficient image quality and diffraction efficiency. Results from the design will be compared with measured values from an injection molded sample of the designed lens. Quality parameter such as wavefront quality, focal shift with temperature and diffraction efficiency will be given. !10
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机译：摘要：由于成本，重量和非球面形状，在许多消费类和专业塑料镜片中都有潜在的应用。然而，它们具有很大的缺点：大量的焦点偏移随温度而变。特别是对于条形码扫描仪，由于温度变化而引起的焦点偏移会对扫描仪的功能产生巨大影响。改善这种透镜的温度特性的一种可能性是将它们转变为所谓的混合透镜：折射表面和衍射表面的组合。这样，可以获得达到玻璃透镜水平的温度补偿。在本文中，将给出此类透镜的设计和制造注意事项。这包括正确的材料选择和机械设计。镜头在$ MIN @ 230度至$ PLU @ 60度的温度范围内进行温度补偿。工作于650 nm且焦距为4 mm，这使得生产具有足够图像质量和衍射特性的此类镜头更加困难效率。设计的结果将与设计镜片的注塑样品的测量值进行比较。给出波前质量，随温度变化的焦点偏移和衍射效率等质量参数。 ！10
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