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Catalogue Catalog Ocean Optics

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Options for the "HR" Optical bench

L2 or L4 Detector Collection Lens

The cylindrical L2 and L4 Detector Collection Lenses -- made in-house to ensure aberration-free performance -- are fixed to a detector's window to focus the light from the tall slit onto the shorter detector elements. They increase light-collection efficiency and reduce stray light. They are also useful with a large-diameter fiber for low light-level applications. Use the L2 with the Sony detector and the L4 with the Toshiba detector. L2 or L4 Detector Collection Lens: $150

8Detector: 2048-element or 3648-element Linear CCD Array

The HR2000+ utilizes the Sony ILX511 linear silicon CCD array detector. Our next-generation HR4000 High-resolution Spectrometer utilizes the Toshiba TCD1 304AP linear CCD array detector, which has some electronic advances over the Sony, such as a user-programmable microcontroller. Both are linear silicon CCD arrays, with an effective range of 200-1100 nm, and with the same dynamic range (1 300:1).

Detector Sensitivity Comparison

4000-

Sony 2048-element ILX511 Detector Toshiba 3648-element TCD1304AP Detector

3000-

2000

There are some differences between the detectors. For example, the Toshiba detector achieves better optical

resolution (see the facing page for details). Also, since the Toshiba's pixels are only 8 pm wide instead of 14 pm wide, the

4Ï0 500 600 ST

STARTING WAVELENGTH (nm)

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sensitivity for a Toshiba pixel seems to be ~60% (8 pm/14 pm) that of a Sony pixel (see graph at right). However, on a per-unit area basis, the sensitivity is about the same since the Toshiba has 3648 pixels compared with the Sony's 2048; the total signal is the same. Because the Toshiba detector has an electronic shutter, you can almost never have too much light; the shutter prevents the detector from saturating, making possible analysis of transient events such as laser pulses.

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	Sony ILX511 linear silicon CCD array	Toshiba TCD1304AP linear CCD array
	Detector range: 200-1100 nm	200-1100 nm
	Pixels: 2048 pixels	3648 pixels
	Pixel size: 14 x 200	8 pm x 200 pm
	Pixel well depth: ~62,500 electrons	~100,000 electrons
	Maximum pixel rate: Rate at which pixels are digitized is 2 MHz	Rate at which pixels are digitized is 1 MHz

Detector with OFLV Filter:

Our OFLV Variable Longpass Order-sorting Filters are applied to the detector's window to eliminate second- and third-order effects. We use patented coating technology to apply the filter onto the substrate. In fact, we are the only miniature spectrometer manufacturer to offer "clean" first-order spectra.

Detector with UV2 or UV4 Detector Window Upgrade

When you specify a detector with a UV2 or UV4 Detector Window Upgrade, we replace the detector's standard BK7 window with a quartz window to enhance the spectrometer's performance from 200-340 nm.

3648-element Toshiba Detector with L4 Collection Lens

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3648-element

Toshiba Detector


Item	Description	Spectrometer	Price
DET4-VIS	Toshiba TCD1304AP Detector installed into a HR4000 User-Configured Spectrometer; best for systems with wavelength ranges above 400 nm	HR4000	Free
DET4-UV	Toshiba TCD1304AP Detector with UV4 Detector Window Upgrade installed into a HR4000 User Configured Spectrometer; best for systems with wavelength ranges in the UV	HR4000	$150
DET4-200-1100	Toshiba TCD1304AP Detector with OFLV-200-1100 Variable Longpass Order-sorting Filter and UV4 Detector Window Upgrade installed into a HR4000 User-configured Spectrometer; used with HC1 Grating ($600)	HR4000	$400
DET2-VIS	Sony ILX511 Detector installed into an HR2000+ User-Configured Spectrometer; best for systems with wavelength ranges above 400 nm	HR2000+	Free
DET2-UV	Sony ILX511 Detector with UV2 Detector Window Upgrade installed into an HR2000+ User-Configured Spectrometer; best for systems with wavelength ranges in the UV	HR2000+	$150

For all your sensing needs, visit OceanOptics.com