CYBERNET思渤科技Case Study of OpticalSimulation Considering theInfluence of HeatHironari lwaiAssociate SpecialistCybernet Systems JapanBackgroundDecade ago,lens system is just "optical system".So there was almost no thermal effectexcept movie projection lens.Recent years,the source power increasing(e.g.laser).Optical system became compactthen it is merged with electric system which produce heat.So we can not ignore thethermal effect to optical system.(e.g.LCD projector,Laser beam printer,car-ounted camera etc.)If there is temperature distribution inside optical system,the optical performance isdegraded.設計值：各レンズの温度は常温熱源温度分布形状变化屈折率变化図中の日本語を変更→光学性能)低下CYBERNET思渤科技CYBERNET SYSTEMS TAIWANThermal Optical Parameters changeLens shapeUniform temperature changeTemperature distributionsurface deformation→simple scalingEffect from barrelstress birefringenceIndex (with wavelength dependence)Uniform temperature changeTemperature distribution→Uniform index change→Index distributionCYBERNET思渤科技CYBERNET SYSTEMS TAIWAN