CN2044737U - 光学衰减器 - Google Patents

光学衰减器 Download PDF

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Publication number
CN2044737U
CN2044737U CN 88220078 CN88220078U CN2044737U CN 2044737 U CN2044737 U CN 2044737U CN 88220078 CN88220078 CN 88220078 CN 88220078 U CN88220078 U CN 88220078U CN 2044737 U CN2044737 U CN 2044737U
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China
Prior art keywords
optical attenuator
attenuator
optical
utility
model
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CN 88220078
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English (en)
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齐学
陆耀东
王钰
黎菲
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BEIJING INST OF ELECTRO-OPTICS
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BEIJING INST OF ELECTRO-OPTICS
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Priority to CN 88220078 priority Critical patent/CN2044737U/zh
Publication of CN2044737U publication Critical patent/CN2044737U/zh
Withdrawn legal-status Critical Current

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  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

一种抗辐射损伤能力极强、光学性能良好的新型光学衰减器。它由筒状外壳、光阑、光学衰减片以及固定光学衰减片的螺纹压圈所构成。它主要用来调整传感器上的光信号强度,其中特别重要的是安装在激光探测器上来改变其测量范围。

Description

本实用新型涉及一种改进了的光学衰减器。它主要用来减弱照射在光学传感器上的光信号强度,使光学传感器工作在适当的工作点上。其中特别重要的应用是安装在测量激光功率与能量的探测器上,以改变其测量范围。
目前,广泛应用于激光技术和激光测试工作中的各种以磨砂玻璃、乳白玻璃、中性吸收玻璃、反射膜层、栅网等为光学衰减片的光学衰减器,普遍存在着抗激光辐射损伤能力弱的缺点:不仅难以经受高功率大能量激光光束的照射、难以对付短脉冲激光光束的高峰值功率密度、也难以对付纤细激光光束的高功率密度或高能量密度。
本实用新型的目的是提供一种不但抗辐射损伤能力极强、而且光学性能良好的新型光学衰减器。
本实用新型是用下述技术方案实现的:由筒状外壳、光阑、光学衰减片以及固定光学衰减片的螺纹压圈构成光学衰减器,所用的光学衰减片全部或部分是均匀的陶瓷板片。
陶瓷材料的物理、化学性能极其稳定,可以承受几千度的高温。使用这种材料制作光学衰减片,可以较满意地解决强激光的辐射损伤问题;未上釉、未抛光、晶粒细小而均匀的陶瓷表面具有很好的消偏振特性,是一种理想的漫射体和散射透射体,可以使这种光学衰减器和装配上这种光学衰减器的激光探测器的其它光学性能,如衰减倍率均匀、不受入射光偏振状态的影响,等等,也得到改进。
下面结合本实用新型的一个实施例作进一步的说明。如附图所示,标有L的箭头表示光辐射的入射方向;光学衰减器的圆筒形外壳[1]可以通过螺纹和光学传感器外壳旋接在一起;最先接受光辐射的光学衰减片[10]是均匀的、未上釉、未抛光、三氧化二铝含量不小于50%的陶瓷板片;第二块光学衰减片[7]和第三块光学衰减片[4]可以是这样的陶瓷板片,也可以是磨砂玻璃等其它材料;它们分别被螺纹压圈[3]、[5]、[6]、[8]、[9]、[11]紧紧地夹住;改变光学衰减片[4]、[7]、[10]、光阑[12]、[2]的数量、位置及通光直径,就可以调整衰减倍率;调整好以后,将各个光学衰减片、各个光阑的位置胶封固定。
这种光学衰减器,能直接接收百瓦特或百焦耳量级激光器的输出光束而无须考虑损伤问题。它不仅在抗激光辐射损伤能力上,而且在衰减倍率的稳定性、均匀性、不受偏振影响等技术指标上,也都超过了美国EG&G    ELECTRO-OPTICS公司出品的550-11型激光衰减器的水平。
附图说明:
L——标有L的箭头表示光辐射的入射方向;
[1]——光学衰减器的外壳;
[2]——出射光阑;
[3]、[5]、[6]、[8]、[9]、[11]——螺纹压圈;
[4]、[7]、[10]——光学衰减片;
[12]——入射光阑。

Claims (3)

1、一种光学衰减器,它是由筒状外壳、光阑、光学衰减片以及固定光学衰减片的螺纹压圈所构成,其特征在于所用的光学衰减片全部或部分是均匀的陶瓷板片。
2、根据权利要求1所述的陶瓷板片,其特征在于陶瓷板片是未上釉、未抛光的。
3、根据权利要求1所述的陶瓷板片,其特征在于三氧化二铝含量不小于50%。
CN 88220078 1988-11-28 1988-11-28 光学衰减器 Withdrawn CN2044737U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 88220078 CN2044737U (zh) 1988-11-28 1988-11-28 光学衰减器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 88220078 CN2044737U (zh) 1988-11-28 1988-11-28 光学衰减器

Publications (1)

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CN2044737U true CN2044737U (zh) 1989-09-20

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CN 88220078 Withdrawn CN2044737U (zh) 1988-11-28 1988-11-28 光学衰减器

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100449303C (zh) * 2005-06-28 2009-01-07 洛阳卓航测控设备有限责任公司 能见度仪调试用光学衰减器
CN103376199A (zh) * 2012-04-28 2013-10-30 深圳大学 一种调节目标和背景亮度进行视觉测量的方法与实验装置
CN104133290A (zh) * 2014-08-21 2014-11-05 刘涛 光学衰减器
CN105445941A (zh) * 2015-12-18 2016-03-30 南京雨花肿瘤防治研究所 一种高功率激光衰减器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100449303C (zh) * 2005-06-28 2009-01-07 洛阳卓航测控设备有限责任公司 能见度仪调试用光学衰减器
CN103376199A (zh) * 2012-04-28 2013-10-30 深圳大学 一种调节目标和背景亮度进行视觉测量的方法与实验装置
CN104133290A (zh) * 2014-08-21 2014-11-05 刘涛 光学衰减器
CN105445941A (zh) * 2015-12-18 2016-03-30 南京雨花肿瘤防治研究所 一种高功率激光衰减器

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