Olympus Microscope manual UIS/UIS2, Tlu

WELCOME TO UIS2/UIS OPTICS

UIS2/UIS:

The System That Maximizes The Advantage Of Infinity-Corrected Optics

What's infinity-corrected optics?

UIS2/UIS optics is an infinity-corrected optical system — in other words, a system in which light passes from the specimen through the objective lens without forming an image along the way. Instead, it travels in the form of infinity parallel rays to the tube lens. The tube lens is where the intermediate image is formed, whereas in finite- corrected optics, this is done by the objective lens.

Figure 1 Infinity-corrected and
	finite-corrected optical system principles
Infinity-corrected optical system
	Parallel light beam	Eyepiece
UIS/UIS2	Tube lens	Intermediate
objective lens		image
Finite-corrected optical system		Eyepiece
Objective		Intermediate
lens		image

Advantages of infinity-corrected optics

This system, known as "infinity-corrected optics", offers a number of advantages:

light between the objective lens and tube lens, allowing the creation of user-specific or task- specific optical systems. To establish real flexibility with such a system, it is necessary to eliminate the occurrence of coma aberration.

*In UIS2/UIS objective lenses, the parfocal distance is designed

at 45mm and the focal length of the tube lens is 180mm.

Figure 2 Advantages of Infinity-corrected optical system

Infinity-corrected optical system Finite-corrected optical system

Objective	Tube lens	Objective
lens		lens

Basic dimensions of UIS2/UIS optical system

The UIS2/UIS optical system optimally corrects aberration with a dedicated telan lens and an eyepiece so that the coma aberration and flatness are not degraded even when the telan lens exit pupil position is changed by changing the objective lens and telan distance. This makes it possible to use a distance of 50mm to 170mm from objective lens mounting position to the single port tube with lens.

*Coma aberration: refer to the optical terminology at the end of

•There is no change in magnification even when the distance between the objective lens and tube lens is altered.

•With the total magnification remaining constant, there is no image aberration — even when prisms or sliders are interposed between the objective lens and the tube lens.

As thousands of users have found by experience, these advantages are crucial to composing the ideal microscope optical system. What's more, it is even possible to freely insert or remove intermediate attachments in the parallel rays of

this document.

Figure 3 Basic dimensions of UIS2/UIS2 optical system

U-TLU

(Single port tube with lens)

Objective lens				Image
45mm	* 40mm	* 84mm
	Recommended distance		57.6mm	102mm
		50-170mm

*Basic dimensions when our revolving nosepiece and illuminator are combined. When the position of the illuminator above is changed, illumination performance cannot be maintained.

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