介绍
为教室和培训环境选择合适的投影仪至关重要。ViewSonic LS625W 教育投影仪凭借其短焦镜头、高亮度和可靠的性能脱颖而出。这篇评测重点介绍了其主要功能、易用性和理想应用场景。
主要特点
亮度和分辨率：LS625W 可提供 3,200 ANSI 流明和 WXGA（1280×800）分辨率，即使在光线充足的教室中也能确保图像生动。
短焦投影：具有短焦比，可以从近距离投射出大图像，最大限度地减少阴影和眩光。
灯泡寿命：在 Eco 模式下最长可达 10,000 小时，减少维护并降低总体拥有成本。
灵活安装：简便的天花板安装选项使其适用于教室、培训中心和小型会议室。
👉 在我们的投影屏幕购买指南（内部链接）中了解有关短焦投影仪的好处的更多信息。
概述
LS625W 的尺寸为 15.1 x 5.8 x 11.5 英寸（宽 x 高 x 深），重 13.7 磅，小巧轻便。其凹陷式镜头设计有助于防止意外碰撞。
一些控制装置位于投影仪的顶部，如果安装在天花板上，可能有点难以触及。
与 LS620X 和 LS625X 一样，LS625W 也是一款短焦投影仪。这意味着它可以放置在靠近屏幕的位置（距离 2.6 到 3.7 英尺），但仍能投射出大尺寸图像。得益于其变焦镜头，它可以显示对角线尺寸为 70 到 100 英寸的屏幕。
短焦投影仪的一大优势是，它可以通过伸缩式壁挂支架安装在屏幕正上方。这使得安装和线缆管理更加便捷，也更加经济实惠。
LS625W 拥有原生 WXGA 分辨率 (1280×800)，比 LS620X 和 LS625X 的 XGA (1024×768) 分辨率更高，因此在更大的屏幕上显示效果更清晰锐利。它还内置视频缩放器，支持 PC 和 Mac 设备上 640×480 至 1920×1200 的分辨率，从而灵活地显示不同的内容。
亮点：
WXGA（1280×800）分辨率
采用 SuperColor 的 DLP 技术
激光/荧光光源，寿命长达 20,000 小时
3,200 ANSI 流明亮度
3,000,000:1 动态对比度
密封光学引擎
0.52 短焦比
投射距离为 2.6 至 3.7 英尺
70–100英寸图像尺寸
水平和垂直梯形校正
双 10W 内置扬声器
AMX 和 Crestron 认证
与 ViewSonic PJ-VTOUCH-10S 兼容，可用于交互式白板
特殊功能
LS625W、LS625X 和 LS620X 均采用 DLP（数字光处理）成像技术和激光/荧光粉光源。在这种设置中，蓝色激光器发出的部分光线照射到荧光粉轮上，产生黄光。黄光与剩余的蓝光结合，形成白光。
That white light then passes through a color wheel made up of multiple colored segments. These colors are projected one after another onto a DLP chip, which creates the image for each color. The image is then reflected through the main lens onto the screen. The switching between colors happens so fast that our eyes blend them into a full-color image.
All three models use ViewSonic’s SuperColor technology. According to the company, this includes either a 5-, 6-, or 7-segment color wheel to enhance image quality. However, ViewSonic hasn’t confirmed exactly which type of color wheel is used in the LS625W. (Interestingly, the LS620X has been reported to use a 6-segment RYGCBW wheel, but when asked, ViewSonic still wouldn’t say what the LS625W uses.)
The LS625W is a compact projector with a well-designed, built-in lens.
Thanks to its laser/phosphor light engine, it can reach up to 3,200 ANSI lumens, making it bright enough for classrooms, even with the lights on. ViewSonic claims a dynamic contrast ratio of 3,000,000:1, achieved by adjusting the laser power in real-time. While the actual contrast might not hit that exact number, this dynamic control still helps deliver impressive image depth and contrast.
The sealed light engine protects against dust and moisture—great for classroom environments. Plus, the laser light source is rated to last 20,000 hours, meaning no more regular lamp replacements. In short, it’s low-maintenance and classroom-ready.
While the LS625W doesn’t have lens shift, it does include horizontal and vertical keystone correction to help square the image if the projector isn’t perfectly positioned. That said, keystone correction can slightly reduce image clarity, so it’s best used only if absolutely necessary.
The LS625W doesn’t have lens shift, but it does support both horizontal and vertical keystone correction to help straighten the image if the projector isn’t perfectly aligned.
For classrooms without a separate sound system, the LS625W comes with two built-in speakers, each powered by a 10-watt amplifier. That’s quite loud for built-in speakers—plenty for a standard K-12 classroom, and possibly even enough for a small college lecture hall.
Applications in Education and Business
Classroom Use: Teachers benefit from reduced shadows, while students enjoy a clear view of the screen.
Training Rooms: Perfect for small-to-medium training spaces, especially when paired with interactive whiteboards.
Business Presentations: Compact yet powerful enough for professional presentations in meeting rooms.
Speaking of education, ViewSonic offers special programs for schools, including K-12, colleges, universities, and even museums.
One standout classroom feature is compatibility with ViewSonic’s PJ-VTOUCH-10S interactive whiteboard module. This module turns your projection surface into an interactive whiteboard using a camera and laser sensor to track finger or pen movement. Up to 10 users can draw or annotate directly on the projected content (like documents or web pages). Teachers can record and save annotations to share with students later.
If the projector is ceiling-mounted and hard to reach, no problem—the LS625W supports AMX and Crestron control systems, so it can be managed remotely over your school’s local network.
Hardware
The LS625W comes with a wide range of ports. For video, it includes two HDMI 1.4 inputs with HDCP 1.4, one S-Video, and one composite video input. It also has two VGA inputs, a VGA output, and a 3.5mm audio input.
A USB 2.0 Type-A port can power a streaming stick (5V/1.5A) connected to one of the HDMI ports. There’s also a Mini USB port for firmware updates and service.
A LAN port lets you connect the projector to your local network for control and content sharing. It also has an RS232 port for additional control options and a 3.5mm 12V trigger output, which can automate tasks like lowering a screen or closing curtains.
The rear panel offers a solid range of connections, including two HDMI inputs, S-Video, composite video, VGA input, a LAN port, and USB. The USB port can power a streaming stick plugged into one of the HDMI ports.
Despite its compact design, the projector offers plenty of control options. There are dedicated buttons for the HDMI and composite inputs, and the menu button can also be used for quick keystone correction. A numeric keypad allows easy control of functions like volume up/down/mute and zoom in/out.
Compact Design, Powerful Features
The LS625W has a compact build but packs a lot of features. You can adjust keystone correction directly using the on-body controls, and the number pad also provides quick access to key functions beyond just numbers.
LS625W 采用高亮度激光/荧光粉光源引擎
，额定寿命长达 20,000 小时。其短焦镜头、网络管理支持以及交互式白板兼容性使其非常适合教育环境。借助可选的 ViewSonic 数字白板模块，教师和学生可以像在真实白板一样与投影图像进行交互。
这款投影仪的WXGA 分辨率可提供16:10 的宽屏比例，非常适合新教室的安装。但是，如果学校正在升级老款4:3 宽屏比例的投影仪，LS620X或LS625X（同样是短焦距，XGA 分辨率）可能更适合。这些型号可能与现有的屏幕和壁挂支架匹配，有助于节省成本。
用 LS625W 替换 4:3 投影仪可能需要更换屏幕或支架，这可能会增加高达 50% 甚至更多的成本。对于预算有限的学校来说，与坚持使用 4:3 投影仪相比，这可能意味着整体上升级教室的数量会减少。
LS625W 拥有 16:10 的宽屏比例，非常适合新安装。但是，用它替换老款 4:3 投影仪可能会更贵。
好的一面是，宽屏格式无疑对新设备大有裨益——老师们经常放映电影，而这款屏幕的观感更佳。此外，价格也比较合理：大约 1,300 美元，而 LS625X 的价格为 1,200 美元。
👉 为了进行比较，请查看我们的索尼 VPL-FHZ75 商务和教育投影仪评论（内部链接），或访问ViewSonic 官方网站（外部链接）了解更多规格。
结论
总体而言，ViewSonic LS625W 教育投影仪在短焦距便利性、高亮度和耐用性之间实现了完美平衡。它尤其适合需要可靠性能且空间要求极低的教育机构和商业环境。