Olympus Optical Company, Ltd.

Kensaku Miyazaki

Masaji Nishikawa

Asao Hayashi

Tadashi Morokuma

Toshio Shinohara

Ken Yonekubo

Ichiro Sawamura

A microscope comprises a full field illumination unit, a spot illumination unit using monochromatic light, means for adjusting the area of the spot region being illuminated, a light receptor for receiving light which is transmitted through a specimen, and an arithmetic unit connected with the light receptor for photometry. Full field and spot illuminations are activated simultaneously, and the position of a specimen is brought into alignment with a spot illuminated region while viewing the specimen. The area of the spot region being illuminated is adjusted so that it is substantially in conformity to the outline of the specimen. The arithmetic unit effects a quantitative determination of the total amount of light transmission through the specimen on the basis of an output from the light receptor and the area of the spot illuminated region.

Microscope for quantitative determination of substance in specimen

A marker assembly for microscope includes a mounting shaft on the free end of which is detachably connected a marking member having a marking piece. A support member defines a chamber within which to receive the shaft in a displaceable manner. The support member can be mounted on the outer periphery of an objective barrel of the microscope, and an operating rod secured to the shaft cooperates with a guide groove or slot to cause a movement of the shaft so that the marking piece may be moved to a marking position and/or inking position.

Marker assembly for use with a microscope

A screen microscope comprising a projection screen arranged on an arm of the microscope and a plural number of reflecting mirrors arranged in the arm and arranged to project an image of an object obtained by the microscope onto the screen through the reflecting mirrors. The screen microscope is arranged so that the observing direction by the screen is approximately same as the observing direction through an eyepiece.

Screen microscope with variable illumination

An automatic exposure control circuit comprises a pair of lamp circuits for displaying the fact that an automatic exposure is feasible and the exposure period which is automatically determined, as well as an electronic shutter circuit and an automatic shutter release circuit, and optionally a color temperature measuring circuit. The control circuit is associated with a photomicrographic apparatus which takes a picture of a specimen being observed in a microscope. When taking a picture, a photometry is made of light from a specimen being photographed in order to determine initially whether an automatic exposure control is feasible for the specimen, and if it is feasible, to provide an automatic release of an electronic shutter by means of a motor, thereby activating the electronic shutter and also producing a lamp display during the period when the electronic shutter is operating. Optionally, a color temperature of the light from a light source which is used to irradiate the specimen is measured.

Automatic exposure control circuit for photomicrographic apparatus

An indicator comprises a liquid crystal display panel for internally housing patterns to be displayed, and a plurality of switches which are operated in unison with a light path switching mechanism for controlling the operation of the liquid crystal display panel. When an objective path of an optical instrument is connected with either one of a viewfinder path, a photometric path, a photographing path or the like by the action of a light path switching mechanism, the liquid crystal display panel indicates the particular light path with which the objective path is connected.

Growing community of inventors

Machida, Japan

Kensaku Miyazaki