(TS-I,TS-L,TS-C,TS-FLA; as well as TS-VLC and TS-WLC which are also provided with TV lens-barrel (microscope tube).)
Included among them is the products equipped with an eye-piece which are used when conducting a visual check of a sample.

(TV-IE,TV-LE,TV-ILC : as well as TS-WLC which are also equipped with eyepiece body tube)
Of all these products, there are products which are equipped with a C-mount used to fix CCD camera and so on in position.

(TS-VLC,TS-WLC,TV-ILC)
Without requiring any lighting from an external source, their lighting equipment can be used independently.
There are two types of these products; one type is provided with a lighting unit (light) and another type is the one in which a lighting unit (light) is used separately and a beam of light is guided by a light guide of optical fiber.

(TS-TVA)
This product is intended to use a CCD camera, etc. with the use of TOOL SCOPE equipped with an eye-piece body tube you have already. If this product provided with C-mount is replaced with an eye-piece, an image from a CCD camera can be projected onto a TV monitor, etc.

A proper objective lens should be selected based on the criterion as to how a sample should be magnified with the lens. The objective lens's magnifying power is a magnification ratio of the sample. The overall magnifying power can be determined by multiplying this power by the magnifying power of an eye-piece.
However, there are some cases where such an image that is magnified with the objective lens cannot be viewed entirely because it is limited by a field of view of the eye-piece.
Moreover, during use of a CCD camera, the whole image cannot be projected because it is limited by a size of its imaging surface.

■ As to whether a sample image should be visually confirmed or projected onto TV monitor:
When a sample image is checked with eyes, use a product with eye-piece body tube; or choose a product with TV lens-barrel when using a CCD camera to project such image onto a TV monitor, etc.
The product equipped with both the eye-piece and TV lens-barrel is also available.

■ What to do when you want to keep a lighting unit (heat source) away from a sample:
Select a product of light-guide type to keep the lighting unit itself which is a heat source away from the sample.

■ How to observe a sample:
For the product with built-in lighting equipment (lighting equipment of epi-illumination type), the illumination should be provided from the top of the sample via the objective lens.
An external lighting source is required if the sample cannot be observed well because of its surface and shape. However, there are instances in which illumination cannot be provided by a high-magnification objective lens because the sample comes closer to the front edge of lens.

■ Focus adjustment mechanism:
With TOOL SCOPE, a focused image of sample can be obtained when the sample and the front edge of objective lens reach a specified distance (working distance).Because the main unit of TOOL SCOPE does not have any mechanism to bring an object in focus, a focus adjustment mechanism to match both distances of the sample and the front edge of objective lens with each other is required separately.
Note, however, that a working distance is determined by an objective lens used. The higher the magnifying power of the objective lens, the shorter the working distance becomes.
Various supporters are made available which function to hold TOOL SCOPE in place and additionally have the focus adjustment mechanism.

■ Illumination:
Illumination is required when observing a sample. Excluding those products with built-in lighting equipment, lighting needs to be provided from an external source. Also, when the illumination from the built-in lighting equipment is not sufficiently bright, external lighting is required.
As such external lighting, lighting of light-guide type, oblique lighting, ring lighting, etc. are available.
To keep the lighting equipment itself which is a heat source away from a sample, use the lighting of light-guide type, whereas this lighting of light-guide type should be selected as well when illumination intensity needs to be increased. Because the lighting of light-guide type provides oblique lighting where illumination is given from the surrounding area of objective lens, there are instances in which illumination cannot be provided by a high-magnification objective lens because the sample comes closer to the front edge of lens.


Lens combination table

Objective lens		OB-05	OB-1	OB-2	OB-3	OB-5
Length of objective lens		41 mm	21 mm	21 mm	21 mm	21 mm
Working distance (W.D.)		365 mm	167 mm	71.5 mm	34 mm	13 mm
Eyepiece	Field of view	φ 36 mm	φ 18 mm	φ 9 mm	φ 6 mm	φ 3.6 mm
OC-10	Total magnification	5×	10×	20×	30×	50×
Eyepiece	Field of view	φ 24 mm	φ 12 mm	φ 6 mm	φ 4 mm	φ 2.4 mm
OC-20	Total magnification	10×	20×	40×	60×	100×

Objective lens		OB-10	OB-20	LWD-5	LWD-20
Length of objective lens		30.1 mm	35.5 mm	81.5 mm	31 mm
Working distance (W.D.)		6.7 mm	1.5 mm	45 mm	5.8 mm
Eyepiece	Field of view	φ 1.8 mmm	φ 0.9 mm	φ 3.6 mm	φ 0.9 mm
OC-10	Total magnification	100×	200×	50×	200×
Eyepiece	Field of view	φ 1.8 mm	φ 0.9 mm	φ 3.6 mm	φ 0.9 mm
OC-20	Total magnification	200×	400×	100×	400×

*OB-20 and LWD-20 are discontinued products.

※Working distance: The distance between a sample and the front edge of objective lens when creating an image of the sample.
※Field of view: The diameter actually seen through eyepiece. This value is determined by multiplying the number of eyepiece's field number (the range of an image of eyepiece) by the magnification of objective lens.
※The total magnification is based on the combination of TOOL SCOPE (mechanical tube length: 163 mm).

▼Imaging surface and dimensions (informative reference)

Nominal dimension of imaging surface	Height x Width dimension	Diagonal dimension
1/4inch	2.4㎜×3.2㎜	4㎜
1/3inch	3.6㎜×4.8㎜	6㎜
1/2inch	4.8㎜×6.4㎜	8㎜
2/3inch	6.6㎜×8.8㎜	11㎜
1inch	9.6㎜×12.8㎜	16㎜

▼Imaging surface and monitor, and electronically magnifying power (informative reference)

Imaging surface		1/4inch	1/3inch	1/2inch	2/3inch	1inch
Monitor's dimensions	5inch	About 32	About 21	About 16	About 12	About 8
	9inch	About 57	About 38	About 29	About 21	About 14
	12inch	About 76	About 51	About 38	About 28	About 19
	14inch	About 89	About 59	About 44	About 32	About 22
	15inch	About 95	About 64	About 48	About 35	About 24

■Optical magnification: Ratio of size of image to size of sample
■Electronically magnifying power: Ratio of size of monitor screen to size of imaging surface of CCD camera, etc. Electronically magnifying power = Monitor size (diagonal) ÷ Size of imaging surface (diagonal)
■Monitor's magnifying power (Video overall magnifying power):
It is the magnifying power when the sample is seen on the monitor screen via lens.
Monitor's magnifying power = Optical magnification x Electronically magnifying power
Example) When the optical magnification equals 3 times and the electronically magnifying power equals 29 times,
the monitor's magnifying power will be equal to 3 x 29 = 87 times.
※TOOL SCOPE is a registered trademark of Chuo Precision Industrial Co., Ltd.