ORCA-Quest qCMOS 相机
自 20 世纪 80 年代以来,滨松光子学株式会社一直利用其独特的相机设计技术开发高灵敏度、低噪声相机,并始终为尖端科学和技术研究的发展做出贡献。现在,我们很自豪地推出性能卓越的 ORCA-Quest。C15550-20UP 是世界上第一款采用 qCMOS 图像传感器的相机,能够使用新开发的专用技术解析光电子的数量。该相机实现了终极的定量成像。
关于 ORCA-Quest 的新闻
ORCA-Quest qCMOS 相机入围 2022 年 SPIE 棱镜奖决赛名单
为了检测具有高信噪比的弱光,ORCA-Quest 针对传感器从结构到电子元件的各个方面进行了设计和优化。相机开发以及定制传感器开发都采用最新的 CMOS 技术,实现了 0.27 电子的极低噪声性能。
光是许多光子的集合。光子在传感器上转化为电子,这些电子被称为光电子。“光子数解析*”是一种通过对光电子计数来精确测量光的方法。为了计算这些光电子,相机噪声必须足够小于光电子信号量。传统的 sCMOS 相机可实现较小的读出噪声,但仍大于光电子信号,因此难以计算光电子。ORCA-Quest 采用先进的相机技术,可对光电子进行计数,并提供 0.27 电子 rms(@Ultra 安静扫描)的超低读出噪声、温度和时间稳定性、单个校准以及每个像素值的实时校正。
* 光子数解析是唯一的,与光子计数有很大不同(更精确地说,该方法解析光子的数量。然而,由于单光子计数代替单光电子计数已用于该领域的可比较方法,因此我们将使用术语“光子数解析”)。
高 QE 对于检测光子的高效性至关重要,并且通过背照式结构实现。在传统的背照式传感器中,由于没有像素分离,像素之间会发生串扰,分辨率通常低于前照式传感器。ORCA-Quest qCMOS 的传感器具有用于实现高量子效率的背照式结构,以及用于减少串扰的一对一像素的沟槽结构。
光子计数 (PC) 级别的图像通常是使用电子倍增相机(例如具有约 0.3 兆像素的 EM-CCD 相机)获得的。但是,ORCA-Quest 不仅可以采集 PC 级图像,还可以采集 940 万像素的光子分辨率图像。此外,按帧速率比较具有不同像素数的相机的读出速度是不公平的。在这种情况下,使用像素速率(像素数 × 帧速率),即每秒读出的像素数量。到目前为止,能够读出 SPC 的最快相机是具有约 2700 万像素/秒的 EM-CCD 相机,但 ORCA-Quest 可实现约 4700 万像素/秒的光子数解析成像,速度几乎是两倍。
提供 ORCA-Quest 中所使用传感器的特点、每个功能的技术解释,包括每个读出模式,以及触发时序图等。
成像技术的发展与新的科学成就直接相关。科学成像已将许多实验从依靠主观记录转变为可客观记录、可重复和可量化的方法。如果没有合适的图像传感器,就不可能实现要求苛刻且极具价值的技术,例如基于单分子的方法。新颖的量化 CMOS (qCMOS) 技术终于达到了物理极限:可靠量化每个像素内的光子数,消除了技术对“沮丧三角”(分辨率、灵敏度、速度)的影响。本白皮书讨论了作为 qCMOS 相机核心的新型图像传感器技术。主题包括半导体图像传感器、定量半导体图像传感器的最新方法、qCMOS 图像传感器以及光子数解析的挑战。
请在下方的白皮书中查看详细信息。
我们正处于 CMOS 和科学成像技术的新时代来临之际。为了充分了解为什么我们推出采用光子数解析技术的全新 ORCA-Quest 定量 CMOS (qCMOS) 相机是一项工程壮举,它能够为生物学、物理学、天文学和量子学研究的新发现道路提供助力,我们邀请您观看由 Peter Seitz 博士主持的发布日网络研讨会。Seitz 博士将简要回顾半导体图像传感器的发展历程和传感器设计原理,并展示如何将光子和相机噪声原理与半导体制造的进步相结合,最终实现世界上第一个 qCMOS 技术。
自 2021 年 5 月 19 日起,Laurin Publishing Company, Inc. 是视频制作人和所有者。
中性原子和离子可以被视为所谓的量子位,因为它们可以呈现叠加态,其中即使单个原子也具有多个特性。正在积极研究该特性,以实现量子计算和量子模拟。通过观察截留离子和中性原子的荧光,可以确定量子位的状态,并使用低噪声相机读出荧光。
模拟图像(Rb 原子@780 nm/原子数:5 × 5 阵列/原子发射:2000 光子/背景:5 光子/放大率:20 × (NA: 0.4)/原子间距:5 μm)
当从地面观察星星时,由于大气湍流,星星的图像可能模糊,因此大大降低捕获清晰图像的能力。但是,由于曝光时间短且大气条件适宜,有时可以拍摄到清晰的图像。因此,幸运成像是一种获取大量图像并在对齐时仅整合最清晰的图像的方法。
Orion Nebula(带 3 个波长滤光片的彩色图像)
拉曼效应是波长不同于入射光的光散射,拉曼光谱仪是一种通过测量该波长来确定材料特性的技术。拉曼光谱仪可在分子层面进行结构分析,提供化学键合、结晶度等信息。
植物会释放极小一部分光能量,在一段时间内作为光进行光合作用。这种现象被称为延迟荧光。通过检测这种微弱光,可以观察化学物质、病原体、环境和其他应激源对植物的影响。
观赏植物的延迟荧光(在激发光淬灭 10 秒后曝光 10 秒)
型号 | C15550-20UP |
---|---|
成像设备 | qCMOS 图像传感器 |
有效像素数 | 4096 (H) × 2304 (V) |
细胞大小 | 4.6 μm (H) × 4.6 μm (V) |
有效面积 | 18.841 mm (H) × 10.598 mm (V) |
最大阱容 | 7000 个电子(典型值) |
读出速度 | 标准扫描*1:120 帧/秒(全分辨率,CoaXPress) 标准扫描*1:17.6 帧/秒(全分辨率,USB) 超静音扫描:5 帧/秒(全分辨率、CoaXPress、USB) |
读出噪声 | 标准扫描:0.43 个电子 rms(典型值) 超静音扫描:0.27 个电子 rms(典型值) |
曝光时间 | 标准扫描*1:7.2 μs 至 1800 s 超静音扫描:199.9 ms *2 至 1800 s(内部、边缘、电平、启动) 超静音扫描:200.2 ms *2 至 1800 s(同步读出) 超静音扫描:172.8 μs 至 1800 s(全局复位边缘、全局复位电平) |
冷却温度 | 强制风冷(环境温度:+25 ̊C):-20 ̊C 水冷(水温:+25 ̊C)*3:-20 ̊C 水冷(最大制冷;水温为 +20 ̊C,环境温度为 +20 ̊C)*3:-35 ̊C(典型值) |
暗电流 | 强制风冷(环境温度:+25 ̊C):0.016 个电子/像素/秒(典型值) 水冷(水温:+25 ̊C):0.016 个电子/像素/秒(典型值) 水冷(最大制冷;水温为 +20 ̊C,环境温度为 +20 ̊C):0.006 个电子/像素/秒(典型值) |
动态范围 | 26 000:1 (rms)(典型值)*4 |
外部触发模式 | 边缘/全局复位边缘/电平/全局复位电平/同步读出/启动 |
外部触发信号路由 | SMA |
触发延迟功能 | 0 s 至 10 s,步长为 1 μs |
触发输出 | 全局曝光定时输出/任意行曝光定时输出/触发就绪输出/3 个可编程定时输出/高输出/低输出 |
外部信号输出路由 | SMA |
图像处理功能 | 缺陷像素校正(开或关,热像素校正 3 步) |
仿真模式 | Available (ORCA-Fusion) |
接口 | USB 3.1 Gen 1,CoaXPress (Quad CXP-6) |
AD 转换器 | 16 位、12 位、8 位 |
透镜接口 | C 型接口*5 |
电源 | AC100 V 至 AC240 V,50 Hz/60 Hz |
功耗 | 约 155 VA |
环境工作温度 | 0 ̊C 至 +40 ̊C |
环境储存温度 | -10 ̊C 至 +50 ̊C |
环境工作湿度 | 30% 至 80%(无冷凝) |
环境储存湿度 | 最高 90% (无冷凝) |
*1:仅正常区域读出模式
*2:如果您需要缩短曝光时间,请联系您当地的滨松代表或经销商。 即使设置较短的曝光时间,帧速率也不会改变。
*3:水量为 0.46 L/m。
*4:根据超静音扫描中最大阱容与读出噪声的比值计算
*5:另提供 F 型接口 (C15550-20UP01) 产品。 如有兴趣,请联系您当地的滨松代表或经销商。F 型接口结构导致漏光,可能会影响测量,尤其是在曝光时间较长时。
随着 ORCA-Quest 的推出,用户现在能够以每秒 120 帧的速度将 940 万像素的图像流式传输到他们的计算机。通过使用 ORCA-Quest PC 建议列出的指南,可以满足计算机对高数据率的建议。
在当今的科学研究中,获得最佳结果不仅要拥有出色的数码相机,而且要充分利用广泛的相机功能;多种读出模式、校正功能、越来越多的像素以及越来越高的读出速度。
当将相机用于工业或研究用途时,必须考虑各种条件(例如待捕获物体的波长和光强度)来选择相机。我们提供“相机模拟实验室”,该工具允许用户在检查模拟图像时直观地比较相机性能导致的成像结果差异。
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