| 多谱段红外探测器组件的光学工程化设计 |
| 投稿时间：2024-06-24 修订日期：2024-07-16 点此下载全文 |
| 引用本文：张璐,李冬冰,付志凯.多谱段红外探测器组件的光学工程化设计[J].红外,2025,46(4):20~26 |
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| 中文摘要:在多谱段红外探测器设计中，多谱段滤光片是实现焦平面集成分光的关键器件。其谱段拼缝越宽、贴装位置距离探测器越远，组件响应度非均匀性越差、谱段间串扰越大。基于某6谱段512×3×6组件开展研究，通过光线模拟计算提出多谱段滤光片参数和探测器尺寸的设计方法。基于光线模拟计算逻辑设计了一套可迭代计算、优化上述参数的计算程序。提出了滤光片贴装工艺方法，为后续相似组件的光学设计提供了有益的解决方案。本文设计的多谱段红外探测器滤光片的拼缝宽度为30 μm，厚度为0.6 mm，距离探测器0.9 cm；探测器像元尺寸为40 μm×40 μm，中心间距为900 μm。组件完成制备验证，降温时间为416 s，6谱段响应率非均匀性分别为10.9%、12.5%、11.8%、11.9%、12.3%和10.9%，相邻谱段间无串扰。 |
| 中文关键词:多谱段红外探测器 光线模拟 参数设置 光学设计 |
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| Optical Engineering Design of Multispectral Infrared Detector Assembly |
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| Abstract:In the design of multispectral infrared detectors, multispectral filters are key components for realizing focal plane integrated spectrometry. The wider the spectrum splitter and the farther the mounting position is from the detector, the worse the assembly response non-uniformity and the greater the crosstalk between spectral bands. Based on a 6-band 512×3×6 assembly, a design method for multispectral filter parameters and detector size is proposed through light simulation calculation. A set of calculation programs that can iteratively calculate and optimize the above parameters is designed based on the light simulation calculation logic. A filter mounting process method is proposed, which provides a useful solution for the optical design of subsequent similar assemblies. The multispectral infrared detector filter designed in this paper has a splitter width of 30 μm, a thickness of 0.6 mm, and a distance of 0.9 cm from the detector; the pixel size of the detector is 40 μm×40 μm, and the pixel pitch is 900 μm. The assembly has completed preparation verification, the cooling time is 416 s, the non-uniformity of the response rate in the six spectral bands are 10.9%, 12.5%, 11.8%, 11.9%, 12.3% and 10.9% respectively, and there is no crosstalk between adjacent spectral bands. |
| keywords:multispectral infrared detector light simulation parameter setting optical design |
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