초록 ▼

The instant invention provides a means and method for producing multi-laminar elements, said elements being suitable for operation in high temperature, atmospheric or vacuum environments such as those which may be required when processing materials such as substrates for semiconductors or for chemic

The instant invention provides a means and method for producing multi-laminar elements, said elements being suitable for operation in high temperature, atmospheric or vacuum environments such as those which may be required when processing materials such as substrates for semiconductors or for chemical vapor deposition.

대표청구항 ▼

The instant invention provides a means and method for producing multi-laminar elements, said elements being suitable for operation in high temperature, atmospheric or vacuum environments such as those which may be required when processing materials such as substrates for semiconductors or for chemic

The instant invention provides a means and method for producing multi-laminar elements, said elements being suitable for operation in high temperature, atmospheric or vacuum environments such as those which may be required when processing materials such as substrates for semiconductors or for chemical vapor deposition. eps) which correct for the physician's and patient's eye. Fine focus (i.e., in the ±1/2 diopter range between steps) is achieved via the examiner's accommodation, i.e., by changes in the ocular lens of the examiner's eye. Currently available direct ophthalmoscopes modified for video and telemedicine make use of two separate focusing mechanisms. The first is the standard focusing wheel discussed above. A beam splitter is placed after the focusing wheel which directs part of the beam through the second mechanism, a continuous focus lens, which images the patient's retina on a CCD array. This lens is adjusted by viewing a distant object through the ophthalmoscope and focusing the object's image on a television viewing screen. As the examiner observes different regions of the patient's retina, fine focus is achieved via the examiner's accommodation exactly as in a standard direct ophthalmoscope, but the focus of the image on the CCD is not similarly corrected unless done manually through the continuous focus lens. U.S. Pat. No. 5,239,984 to Cane et al discloses employing video technology in combination with hand-held diagnostic medical instruments through the use of an adapter which is removably secured to the instrument. The adapter utilizes a beam splitter which provides two optical outputs. One of the optical outputs goes to the medical system eyepiece to enable the examiner to obtain a direct view of the target area, such as the retina of the eye. The second optical output goes to a video camera head, typically a solid state imager such as a charged-coupled device (CCD). This allows for video output of the target area for use in producing hard copy photographs, real time video display, or telecommunication links to remote video hook-ups. As noted above, one difficulty experienced in the use of such instruments is that focusing the image requires separate adjustments for the two different images. Many devices make use of two separate focusing mechanisms. As the examiner observes different parts of the patient's retina, fine focus is achieved via the examiner's accommodation exactly as in a direct ophthalmoscope, but the focus of the image on the CCD is not similarly corrected. Thus, the image on the CCD must be focused using a separate focusing mechanism. U.S. Pat. No. 5,599,276 to Hauptli et al discloses a hand-held device with a video adapter coupled into the line of sight between the operator and a diopter indicator window. Hauptli's device is arranged so that the operator may view the di