Improvements in or relating to ophthalmoscopes / [Henry Lawrence De Zeng].

  • Zeng, Henry Lawrence De.
Date:
1901
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in or relating to ophthalmoscopes / [Henry Lawrence De Zeng]. Source: Wellcome Collection.

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    «s o is0 14,962.—A.D. 1901. Harrison’s Improvements in or relating to Ophthalmoscopes. reflector for extraneous light and means permitting the transmission of light from the object through said reflector. 4. In combination, an adjustable telescope and an ophthalmoscope having an adjustable reflector for extraneous light and means permitting the transmission 5 of light from the object through sard reflector. 5. In combination, a telescope, the lenses of which are relatively adjustable, means for measuring said adjustment, and an ophthalmoscope. 6. In combination, a telescope and an ophthalmoscope having a reflector for extraneous light, said reflector supported by an universal joint, and means 10 permitting the transmission of light from the object through said reflector. 7. In combination, a telescope and an ophthalmoscope having a reflector for extraneous light, means permitting the transmission of light from the object through said reflector, and means carried by the case of the instrument adapted to support a source of extraneous light, substantially as described. 15 8. In combination, a telescope and an ophthalmoscope, the latter having a. reflector for extraneous light, means permitting the transmission of light from the object through said reflector, means carried by the case of the instrument for supporting a source <M: artificial light, and a reflector adapted to direct the rays of said artificial light against said ophthalmoscope reflector. 20 9; In combination, a telescope and an ophthalmoscope, the latter being in line with the optical axis of the telescope, means carried by the case of the instrument for supporting an artificial source of light, and a reflector adapted to direct the rays from said source of light to the ophthalmoscope, substantially as described. 10. An article of manufacture combining an ophthalmoscope and a telescope, comprising a case provided with a telescopic eye piece and object lens adjustable with respect to each other, a source of artificial light carried by the case, and a jeflector located in the telescopic axis of the eye piece and object lens, said reflector having means permitting the transmission of light from the object through said reflector and adapted to reflect the rays of the artificial light g() against the object, substantially as described. 11. An article of manufacture combining a telescope and an ophthalmoscope, consisting of a case having two portions, one at an angle with the other, one portion containing the telescopic eye piece and lens, the other portion containing a source of artificial light and a reflector having means permitting the trans- 33 mission of light from the object through said reflector, said reflector located at the junction of the two portions of the case and adapted to reflect the light from the artificial source to the object. Dated this 1st. day of July 1901. I). YOUNG- & Co., 40 11 & 12 Southampton Buildings, London, W.C., Agents for the Applicant. Kedhill: Printed for His Majesty’s Stationery Office, by Malcomson & Co., Ltd.—1901.