Abstract An operating indicator for use in a photometer that has a housing for encompassing the operating parts of the photometer including a light source. The light source is used to provide the necessary illumination in a photometric test. A bezel is formed on the housing in which the readout apparatus of the photometer is readily observable. The operating parts of the photometer, including the light source, are activated and deactivated by a switch controlling the power supply. A covering having two apertures is positioned about the light source. The first aperture allows light to pass through the covering with the light being used to take the photometric test. The second aperture permits light to pass through the covering to become seen at the bezel for indicating when the light source is operating.
An operating indicator used in a photometer, comprising: a housing for encompassing the elements of a photometer; a light source disposed within said housing for providing the necessary illumination for a photometric test; means for supplying electrical power to said light source and capable of activating and deactivating said photometer simultaneously with said light source; switching means for activating and deactivating the electrical power when supplied by said power supplying means; a cover enclosing said light source having first and second apertures provided therein, a first light path for taking the photometric test being formed by light passing through the first aperture and a second light path for indicating the activation of said light source being formed by light passing through the second aperture; and a bezel located on said housing, a colored translucent element disposed in said bezel for aiding in observing the activation of said light source and a prism connected to said bezel for reflecting light from said second light path to impinge on said colored translucent element.
Claim 2
Dependent Claim
171 words
An operating indicator used in a photometer, comprising: a housing for encompassing the elements of a photometer; a light source disposed within said housing for providing the necessary illumination for a photometric test; means for supplying electrical power to said light source and capable of activating and deactivating said photometer simultaneously with said light source; switching means for activating and deactivating the electrical power when supplied by said power supplying means; a cover enclosing said light source having first and second apertures provided therein, a first light path for taking the photometric test being formed by light passing through the first aperture and a second light path for indicating the activation of said light source being formed by light passing through the second aperture; and a bezel located on said housing, a colored translucent element disposed in said bezel for aiding in observing the activation of said light source and a prism connected to said bezel for reflecting light from said second light path to impinge on said colored translucent element.