Two Versions of Light Detection System that Set New Standards for Optical Performance.

Spectral Based Detection

Flexibility and High Sensitivity

Spectral detection using gratings for 2 nm wavelength resolution and image acquisition matched to fluorescence wavelength peaks. User adjustable bandwidth of emission spectrum for acquiring bright images with minimal cross- talk.

Precise Spectral Imaging

The spectral detection unit uses a grating method that offers linear dispersion compared with prism dispersion. The unit provides 2 nm wavelength resolution to high-sensitivity photomultiplier tube detectors. Fluorescence separation can be achieved through unmixing, even when cross-talk is generated by multiple fluorescent dyes with similar peaks.

EGFP–EYFP Fluorescence Separation

2,600

2,400

2,200

2,000

 

1,800

 

 

 

 

 

EYFP

 

 

 

 

 

 

 

Intensity

1,600

 

 

 

 

 

 

 

 

 

 

 

 

1,400

 

 

 

 

 

 

 

 

 

EGFP

 

 

 

1,200

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1,000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

800

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

600

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

496

500

504

508

512

516

520

524

528

532

536

540

544

548

552

 

 

 

 

 

 

 

 

Wavelength

 

 

 

 

 

 

 

EGFP (dendrite) — EYFP (synapse) XYλ

Wavelength detection range: 495 nm–561 nm in 2 nm steps

Excitation wavelength: 488 nm

Courtesy of: Dr. Shigeo Okabe Department of Anatomy and Cell Biology, Tokyo Medical and Dental University

Filter Based Detection

Enhanced Sensitivity

Three-channel scan unit with detection system featuring hard coated filter base. High-transmittance and high S/N ratio optical performance is achieved through integration of a pupil projection lens within the optics, the use of a high sensitivity photomultiplier and an analog processing circuit with minimal noise.

High-Performance Filters Deliver Outstanding Separation

Special coatings deliver exceptionally sharp transitions to a degree never achieved before, for acquisition of brighter fluorescence images.

DM488/543/633 Comparison

Transmittance (%)

100

80

60

40

20

0

 

 

 

 

 

 

 

 

 

 

 

480

500

520

540

560

580

600

620

640

660

680

700

Wavelength (nm)

Conventional mirror unit

High-performance mirror unit

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Olympus FV1000 manual Spectral Based Detection, Filter Based Detection