Compact Tube Lens Assembly

• C 接口安裝螺牙，便於系統整合
• 設計與 120mm 管鏡搭配使用
• 是生命科學及工業應用的理想選擇
• 2023 年 VSD 創新者銅獎獲獎者

EdmuOptics^®120i Plan APO無限遠校正物鏡是一款無限遠共軛顯微鏡物鏡，能夠在400-700nm波長範圍內提供卓越的影像平直度和色差校正。這些物鏡專為1.1吋畫幅感測器設計，旨在為大視野和高吞吐量成像應用提供可靠的影像品質這些物鏡是顯微鏡、流式細胞儀、藥品檢測和裝配線或故障檢查等生物醫學和機器視覺應用的理想選擇。

這些物鏡榮獲 2023 VSD 創新者獎銅獎。

Technical Note: Why Numerical Aperture Does Not Define Performance

Numerical aperture (NA) is an important specification to define for a microscope objective because it describes the objective’s ability to gather light at a fixed working distance. The NA is often assumed to describe an objective’s resolving power; however, this is not an accurate assumption. The equation below is the first-order equation used to calculate NA. This equation is useful for understanding NA on-axis, but it does not consider field changes for off-axis performance. In addition, this equation does not consider tolerances during the manufacturing and assembly of microscope objectives that can impact the performance.

n: refractive index of imaging medium

θ: one-half of the objective’s opening angle

Figure 1 below demonstrates the off-axis performance of the 5X 120i Plan APO Infinity Corrected Objective compared to another 5X Plan APO infinity corrected objective from another manufacturer that has the same NA of 0.14. Performance off-axis is better with the 120i Objective in the corner of a 1.1” sensor, indicating that NA is not the defining factor for the performance of an objective.

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