泽连斯基首次公开指责中国,成人片在线免费看,奇米第四狠狠婷婷,白浆 91av

撥號18861759551

你的位置:首頁 > 技術(shù)文章 > 離軸拋物面鏡選擇指南

技術(shù)文章

離軸拋物面鏡選擇指南

技術(shù)文章

Off-Axis Parabolic Mirror Selection Guide

Parabolic mirrors have the ability to focus collimated light without introducing spherical aberration. An Off-Axis Parabolic (OAP) mirror is simply a side section of a parent parabolic mirror. Collimated light that is incident to an OAP mirror is focused to a point. However, unlike a centered parabolic mirror, an OAP mirror has an advantage in that it allows more interactive space around the focal point without disrupting the beam as shown in Figure 1.

Figure 1: Off-Axis Parabolic Metal Mirrors

 

Depending on which section of a parabolic shape an OAP mirror is replicating, the angle between the focal point and the central ray axis can be large or small. Figure 2 represents this phenomena by modeling a 15° and 45° off axis mirror respectively. Note: It is important to keep the incident beam parallel to the optical axis, any angular displacement will produce comatic aberration.

Figure 2: Diagrams of 15° and 45° OAP mirrors

 

Edmund Optics offers three types of off-axis parabolic mirrors: metal, high performance, and low scatter. Table 1 compares the substrate, controlled scattering ability, and price of the three different types.

 

Selection Guide

The following selection guide provides helpful information detailing the strengths and limitations of each OAP type.

Off-Axis Parabolic Metal Mirrors

Metal mirrors are available in 15°, 30°, 45°, 60°, or 90° Off-Axis options. Each of these options comes with a coating choice of Protected Aluminum, Protected Gold, or Bare Gold. These coatings allow great reflectivity across a range of spectral regions. Edmund Optics also offers different diameter selections for each coating and angle. Typically, these mirrors are used as collimators in Schlieren and MTF systems, but gold coated off-axis parabolic mirrors can also be used in FLIR test systems.

Figure 3: Theoretical Reflectance Curves for Metal Mirror

 

Strengths

Limitations

ØAluminum substrate mirrors.

ØAvailable in 15°, 30°, 45°, 60°, or 90° Off-Axis Options

ØAluminum and Gold Coating Options

ØDue to the 175Å surface roughness, these mirrors are not suitable for visible and UV applications that require low scatter

 

High Performance Off-Axis Parabolic Mirrors

Edmund Optics also offers high performance glass substrate off-axis parabolic mirrors with superior surface accuracy for increased focusing ability. Typical applications include use in Czerny-Turner and Littrow spectrometer configurations and in general collimator and beam expander setups. These mirrors work extremely well in the UV to visible light spectrum.

Figure 4: Simulation Result of Aluminum Coating Reflectance between 10,000nm and 20,000nm

 

Strengths

Limitations

ØHigh Quality Glass Substrate

Øλ/4 or λ/2 Surface Accuracy

ØIdeal for UV and Visible Applications

ØTypically longer focal length

ØRequires angled mounting making alignment more challenging

ØGlass substrate is not suitable for terahertz frequency applications

 

Low Scatter Off-Axis Parabolic Mirrors

TECHSPEC® Low Scatter Off-Axis Parabolic Mirrors are designed to direct and focus incident collimated light at a specific angle with minimal scatter loss. By using a specialized manufacturing process, the aluminum substrate low scatter OAP mirrors decrease scatter in the visible spectrum. Each mirror has been visually inspected with a HeNe laser to ensure low scatter.

Figure 5: Typical Scatter Profiles. Left is standard grade OAPM, while right is TECHSPEC® Low Scatter OAPM

 

Strengths

Limitations

ØDesigned for Low Scatter in the Visible Spectrum

ØAluminum Substrate Mirrors

ØImproved Surface Roughness and Surface Figure

ØMust operate in a clean environment

聯(lián)系我們

地址:江蘇省江陰市人民東路1091號1017室 傳真:0510-68836817 Email:sales@rympo.com
24小時在線客服,為您服務(wù)!

版權(quán)所有 © 2025 江陰韻翔光電技術(shù)有限公司 備案號:蘇ICP備16003332號-1 技術(shù)支持:化工儀器網(wǎng) 管理登陸 GoogleSitemap

在線咨詢
QQ客服
QQ:17041053
電話咨詢
0510-68836815
關(guān)注微信
日韩精品一区二区三区毛片| 四虎wety| 无码精品久久久久一区二区| 超碰ab| 亚洲色婷婷久久精品| 国产成人综合亚洲动漫在线| 亚洲 牲交| 亚洲午夜精品久久久久久白云 | 草莓一区| 国产精品香蕉| 免费观看视频久久| 亚洲国产成AⅤ人天堂无码| 婷婷伊人大蜜臀| 次久av| 日本色偷偷网站| 91精品国产69久久久久久无码| 国产精品久久久久久久雪梨| 中文字幕av干| 久久久久久人妻…| 精品人妻系列无码专区| 亚洲无码视频网站| 国产av视屏网站| 狠狠躁天天躁中文字幕日韩版| 久草wwww| 密臀无码不卡| 激情丁香五月人妻视频| 久久精品欧美美99亚洲洲在| 久久久神马三级电影| 免费女人一级毛片视频| 亚洲国产精品影院| 午夜福利在线观看入口| 无码AV日韩| 陵水| 亚洲日本久久一区| 美洲中文精品不卡av| 夜夜骑免费视频| 国产精品色网站| 电影三级片男人的天堂| 精品福利一区二区视频 | 综合久久本道中文字幕| 成人午夜理论影院|