Optical detector
AssigneeLasag AG
InventorPhilippe Roussel
Life of this patent
Estimating the term…
Abstract
An optical detector for the detection of very small objects comprises a first optical system defining an optical path and being operable to transmit electromagnetic radiation onto an object to be detected; a second optical system defining an optical path parallel to said optical path of said first optical system and being operable to receive said electromagnetic radiation after diffusion and reflection by said object; and a converging lens associated in common with said first and second optical systems and arranged such that said optical paths of said first and second optical systems are parallel to and symmetrical about the axis of said converging lens on one side thereof.
Claims23
An optical detector for the detection of very small objects comprising:
- (a) a first optical system defining an optical path and being operable to transmit electromagnetic radiation;
- (b) a second optical system defining an optical path parallel to said optical path of said first optical system and being operable to receive said electromagnetic radiation after diffusion by an object;
- and
- (c) a converging lens associated in common with said first and second optical systems and arranged such that said optical paths of said first and second optical systems are parallel to and symmetrical about the axis of said converging lens on one side thereof, wherein
- (d) said first optical system comprises means for transmitting said electromagnetic radiation to said converging lens in a parallel beam, said means for transmitting said electromagnetic radiation comprising a positive lens preceded in said first optical system by a source of said electromagnetic radiation, a condenser for collecting said electromagnetic radiation, and interchangeable diaphragms, each diaphragm having a hole of a different size whose image is transmitted by said electromagnetic radiation to the focal point of said positive lens, said hole being situated at the focus of said condenser.
An optical detector for the detection of very small objects comprising:
- (a) a first optical system defining an optical path and operable for transmitting electromagnetic radiation;
- (b) a second optical system defining an optical path parallel to an optical path of said first optical system and operable for receiving said electromagnetic radiation after diffusion and reflection by said object;
- and
- (c) a converging lens associated in common with said first and second optical systems and arranged such that said optical paths of said first and second optical systems are parallel to and symmetric about the axis of said converging lens on one side thereof, wherein
- (d) said first optical system further comprises:
- (i) means for transmitting said electromagnetic radiation to said converging lens in a parallel beam,
- (ii) said means including interchangeable diaphragms each having a hole of a particular size whose image is transmitted by said electromagnetic radiation to the focus of said converging lens, for providing changeable sensitivity for said detector, whereby a desired sensitivity is provided for the detection of corresponding objects of small volume.
An optical detector for the detection of very small objects comprising:
- (a) a first optical system defining an optical path and being operable for transmitting electromagnetic radiation;
- (b) a second optical system defining an optical path parallel to said optical path of said first optical system and being operable for receiving said electromagnetic radiation after diffusion and reflection by an object;
- (c) a converging lens associated in common with said first and second optical systems and arranged such that said optical paths of said first and second optical systems are parallel to and symmetrical about the axis of said converging lens on one side thereof;
- and
- (d) at least one marking optical system for illuminating the focus of said converging lens.
Dependencies are inferred from the claim text.