光学低通滤波器

光学低通滤波器（OLPF）的频率特性和光谱特性

Frequency and Spectrum Characteristic of the Optical Low Pass Filter

光学低通滤波器技术及其在CCD摄像机中的应用

Technique of the optical low pass filter and its application in CCD camera

光学低通滤波器（opticallowpassfilter，简称OLPF）利用石英双折射晶体的分光性质来实现低通滤波。

Birefringent quartz crystals ′ light splitting characteristic is used in optical low pass filter ( OLPF ) .

光学低通滤波器（opticallowpassfilter，OLPF），经常采用双折射晶体，并被广泛的运用于光电成像系统中。

Optical low-pass filter ( OLPF ), birefringent crystal is adopted in most case , has been wide-applying in opto-electric imaging system .

在分析光学低通滤波器原理和红外截止滤光片作用的基础上，设计了一种特殊的红外截止膜系，可使CCD摄像机白天成彩色像，夜晚成黑白像。

Based on analyzing the operational principle of OLPF and function of IR-CUT optical filter , a special IR-CUT coating is designed to make the CCD camera obtain colored image in daytime and black-white image at night .

分析表明，晶片厚度决定滤波器的截止频率，因此采用多片式OLPF的设计可以加强滤波器对高频部分的频谱响应，从而形成较为理想的光学低通滤波器。

The result of analysis shows that the thickness of birefringent crystal determines the cut-off frequency of filters , thus , for multi-plate OLPF , an improving design , modifies the spectral response of filter at high frequency and comes to being a more effective OLPF .

为了设计一个较为理想的光学低通滤波器（OLPF），在分析双折射晶体的光学特性基础上，运用光学传递函数方法对各种结构的OLPF进行分析，给出了各种结构的幅频特性曲线。

In order to design a more perfect optical low pass filter ( OLPF ), this paper employs analytical method of optical transfer function to different structure of OLPF on base of the analysis of the optical characteristic of birefringent crystal and presents the amplitude frequency response characteristics of OLPF .

光学低通滤波器的特性分析

Characteristic analysis of optical low pass filter used in digital camera

一种日夜两用光学低通滤波器的研制

Design and manufacture of a day and night optical low pass filter

还自行设计并实现了产业化中需要的双折射光学低通滤波器批量在线实时光点阵测试仪，填补了国内该测试仪器的空白。

An on-line real-time BLF optical lattice test device was also designed and implemented to serve the need of BLF industrialization , which filled a gap in the BLF test apparatus in China .