Carl-zeiss-stiftung

Harry Schlemmer

Meinrad Machler

Richard Sachse

Reinhold Bittner

Franz Gluck

Gerhard Hohberg

Axel Matthes

Ursula Rager

The invention is directed to an arrangement for measuring the absorption of a transparent specimen. The arrangement includes: a radiation source for supplying radiation; a radiation-integrating device defining a space enclosed by a wall having a reflective surface for multiply reflecting the radiation substantially uniformly throughout the space to diffusely illuminate the transparent specimen whereby diffused radiation passes through the transparent specimen; a photometric measuring unit for measuring the radiation passed through the specimen; and, a mount for mounting the specimen between the reflective surface and the measuring unit. The arrangement of the invention enables the absorption of transparent specimens to be measured which have unfavorable outer forms such as where the specimen contains no surfaces which are mutually parallel.

Arrangement for measuring the absorption of transparent specimens

An unmetallized grating is mounted on an optically transparent body is subjected to radiation which passes through the body and strikes the flanks of the grating grooves at an angle that is larger than the critical angle of the total reflection.

Reflecting diffraction grating

A method and an apparatus for optical strain measurement are disclosed. Prior to the deformation or loading of the object to be tested, the latter is provided with a thin transparent film which adheres well to the object and has a thickness between 3 and 20 .mu.m. After the deformation or during loading, the wavelength-dependent intensity course developed because of the interference of the portion of the beam of light reflected and superimposed at the boundary surfaces of the transparent film is measured and evaluated by a computer.

Method for measuring optical strain and apparatus therefor

The invention is directed to an arrangement for determining the spectral characteristic of the refractive index of a liquid or a gas wherein the specimen is enclosed between two boundary surfaces spaced apart between 1 and 50 .mu.m. The surfaces are at least approximately parallel to each other. The boundary surfaces cause interferences when illuminated with white light passing through the surfaces. The interferences are measured by a spectrometer in their wavelength-dependent course and are thereafter evaluated.

Arrangement for determining the spectral characteristic of the

The invention is directed to objectives for imaging small regions with a large aperture angle. The objectives include two aspheric bodies made of optically isotropic material wherein the deflection of the light rays is achieved by total reflection on the outer surfaces. The light entry surfaces and light exit surfaces are configured as spherical surfaces having center points at least approximately coincident with the focal points of the aspheric bodies.

Objective with aspheric surfaces for imaging microzones

For mounting the optical components of optical apparatus in an adjusted manner, the optical components are either adjusted and permanently fixed in or on shaped component bodies having accurately defined dimensions, or are produced on such bodies at an accurate location and with accurate alignment. Then, the shaped component bodies are assembled in a defined manner, so that the optical components assume the precisely correct location relative to one another.

Method of assembling the optical components of an optical apparatus and

The invention is directed to a through-flow cuvette which can be assembled and wherein the cuvette body is made of two cuvette halves. The cuvette halves are placed one atop the other at their planar surfaces. Convex recesses are formed in these planar surfaces and define the inlet and outlet channels as well as the measuring space.

Growing community of inventors

Aalen, Germany

Harry Schlemmer