Optical filter modeling software offers custom filter functionality
Spectra Viewer software models optical filters, compares light sources, and optimizes optical system designs. New features include an expanded light source library with LEDs, laser lines, and customizable laser wavelengths; more fluorochromes and proteins; custom filter functionality; and enhanced data export and sharing. It is used in fluorescence microscopy, flow cytometry, spectroscopy, and optical system development.
Chroma Technology
Bellows Falls, VT


![FIGURE 1. This functional prototype of a combined system for diagnosing, monitoring, and treating cataracts includes eye positioning location (a), LEDs to excite fluorescence for quantitative diagnosis and to provide photobleaching treatment (b), a continuously variable bandpass filter (CVBPF)-enabled spectrometer (c), a single-photon counting photomultiplier tube (PMT; [d]), and a second eye-positioning location (e).](https://img.laserfocusworld.com/files/base/ebm/lfw/image/2020/03/2004LFW_pus_1.5e8346083bae0.png?auto=format,compress&fit=crop&q=45&h=139&height=139&w=250&width=250)

