DE1951703U - MEASURING PLATE SET WITH TWO MEASURING PLATES FOR JAVAL OPTHALMOMETER. - Google Patents

Description

fiA.561192 * 26.166

PATENT LAWYERS

DR.-ING. H. FINCKE β Munich b,

DIPL.-INQ.H.BOHR garbage ^ e 31

DIPL.-ING. S. STAEGER
Fe r η ruf: 224941

M §i®S - Sf

ats with mmi M © ssplatt © B ffe ⁵

5 c. KIs »s ISS ^ - Fi» asite © £ © lii

oil © i © «r" tsng lb © gi © M * sisli auf eiE @ ss H @ ßplatt © asats ' »sit swei fi!» ¹ Ja ^ ai-Oplitaliioaiiet ©! ⁰ , »Bisses S @ i? Ät used

ffe% l & tt @ s ₉ d £ ® aittigls "a ^ ei light sources s iioss © ete © iisti @ eli © _s I <© 3apleiH © ntäre Licht-

aifl @ © Brille 2ni <äeia ₉ about di © @ ia © Lie ^ tq ^^ ile green light 'i £ e ansd®j? © jeotess Lieht. Iii @ jrdia5i? Eli wifa the equilateral 'Ciiis am point) des? both measuring |} 2atf © n uiraio possible ge sswap w @ g © si. the wefschiedenem WelienlSagen des? vet · - da! © diglieh @ias äet » Pictures void in k ^ nn" -B £ e eia © d®E »! fegplatteis consists" of ones and äi® asidei »® M @ Bi & Iatte ₉ the so-called warmed Btw.i ssiplsitt © η «iafasst swei @ 5ΤΊϊρρ @ Ώ worn j ©« äj ^ ei stages _s being the tiyif © 3 ©? 5®ila d® ^ B ^ eefeteaft ^ © b bucket The

is equivalent to. Di® first reading position of the ophthalmometer is made by having one edge of the rectangular Window of the first measuring plate is brought into congruence with the side of the first step of the second measuring plate. It is relatively difficult to establish this coverage, especially because of the poor coverage of the pictures. On the second reading, the same edge. of the rectangular window more or less on the step scale au lie * and the situation the same then determines the value of the astigmatism of the examined cornea. The second reading is proportional tricky to execute.

The innovation is based on the task of _{creating 9} hot plates that allow more comfortable and more accurate reading than usual measuring plates.

The masonry can essentially be seen in the fact that one of the measuring plates has a window in which a reference line is drawn "which is at right angles to an edge forming a base line ₃ that the second measuring plate likewise has a window into which a diopter scale is drawn in ₉ whose graduation lines open out at one of the edges ₉ which at the same time forms the base line, and that uk

ca », Si *»

₉ that Ib the "te" eh the eyepiece of the ophthalmometer picture di © both base lines fall, and that the © window "forms two areas * which lie on both sides of the common base line" where the reference line scidasiB in relation to the graduation lines of the dioptre stick in the middle de ^ Einetelloff'gane of the Qphtalmometer can be moved »

As a precaution, the two Mefö plates are colored by the same Lies illuminates where the setting of the Device @ rl @ ichert.

The HauertsKg is based on the following schematic drawings described in addition to @inem Ay @ Führisngsb @ ispi @ l

Figure f shows an Aias guide form of the first measuring plate after the N @ umrag ₉ which has a reference line;

FIG. 2 shows an eye shape of the outer measuring plate according to the innovation _s which has the diopter scale;

Figos »S gcdgt the operation of the ai with the two measuring plates

Figw i and 2 equipped ophthalmometers

first reading and

igt one in

In the illustrated ÄusfüÄrmigsiorm the measuring plate -According to Figure 1 a plate 1 "aW ^^ e ^ .jSoBo" through = shining material, on, - ".. whose surface is partially - ......

is blackened at the point 2 /, so that an essentially rectangular, farthest third French remains in the "4" which is at right angles on one of the straight edges -., 5 of the window is arranged. ■ parallel to the opposite ICante 6 of the .Eeneter, a comparison line "7 ■■ drawn". Below the window 5 is an elongated one in the same way. rectangular window 8- provided ^ in which a second equal line 9 is sucked out ₉ parallel to. the first line of equality lies «....

The second .measuring plate 12 shown in ". Figure 2 is; also partially blackened on ... the surface", so that an essentially borrowed, rectangular window 1 "3" is. j whose dimensions remain the -; -: ln. correspond to Figure 5 * and in which a diopter scale: 14. is drawn, ·. its tick marks at right angles to one of the straight edges. 15 -des lens te'Fs ^ yir run en ■ «," In the embodiment shown, the sat rod has a rope ranging from 0 to 6 diopters _f which is divided into units of tone half bioptres _o; Iahe. "■ the ICante 17, the 'edge-. 1.5 ^: 'opposite and parallel to. this "is. If a comparison line 18 is provided in the"'second

Measurement plate 12 is also provided with a wide window 20, which contains a second surface line 21, which is sucked inside the second window *. The distance between the comparison lines 18 and 21 of the first measurement plate is the same as that .;: "Distance 'between -" the comparison lines 7 and 9 of the first measuring plate $ and the lines 15 and 5 lie in the middle between the corresponding comparison lines "-". ^-: ;; - - .; ^; . . -

Lie -Me splats are arranged in such a way that "in the case of the one observed in the ophthalmometer's eyepiece. - Image the comparison lines 7 and 21 on the one hand, and 9 and ^: 18 on the other hand each form a lively, perky, straight mnie _o The measuring plates are The setting is simplified: it is _o ■

.The windows 5 imd · 13 are located .. ai accordingly on "both sides of the common mnie; the" -through- the edges 5 and. ! 15 formed ACT5 and are Meßpiatten; '- ₉ is arranged such that actuation of setting elements of the ά & τ Ophtalmometers a shift, the window of this länga ■ .gemeinsamen line bewirkt- "Bie ^{-Bezugs-line:} -4 can be applied to" this manner in front of the Dicptrial scale 14 brought: - "and gate the tick marks of the same." - Be the first. Reading is achieved in that the Beaugsstrieh 4 in the. in fig-ur 5 accommodated position shown, is, -, "d" -hο "in Plu.chtung 'with the first Teilstrich- 32' of the scale," which corresponds to the diopter value 0 ₀ - Ba of -Bezugsstrich; 4. from the neighboring .edge

of the 'window. 3. Separate is ₉ can, oil coenzl & enz of lines 4 and. 3.2 can be produced easily and with great accuracy, snrnal das.Adjusting the measuring platexi no particular difficulties with blob, brings _β . '"

With the second reading _5, which is "achieved in the usual way" by rotating the observation glass by 90 ° around its axis, the reference line 4 shifts with an astigmatism of the observed surface Tor the rope cords of the biometric scale 14. ■ » -Figur 4 "shows an example of a read-outs" in which the Begugsstriab 4 th against the vie2 ^':;.. l'eil &funnel-"the three) iöp: trieninaßstabs ■ _s is in accordance with" a · astigmatism τοη "1- , 5 dioptres ₀ By suitable choice of the strength of the BeaugsStriches: 4 as well as the strength of the 'graduation lines .; The 2) ioptrial scale 14 and the distance between the same allows you to achieve an excellent reading accuracy, which can be better than a quarter of a diopter ₅ what with. the. usual measuring plates. -not available »■ '■■"-'"'- · ■" ■ "■""":."■ - V''-. ■ ""'"■'

DR.-ING. H. FMCtCS, DIPL.-IM®. H.

WWW ©. S. STASSSg

Claims (1)

56102 * 10/26/66 / I ₅ Vi $ £ y} l &t'b'3'asätz ~ with met- Msiplatten _g for- JaYal-O.puas.tal- = - moiseter _s claöLurcli - g e- te β -η η ζ '& i oll net * that a ctgff MeSplsttea eia I'eaa-ter has.? In Say a Besugs "* line siageiseioäast is welclie-reehtisfiakllg sii one Bins druaclliiii © bilSendaii ICaiite. lay -that the second MeSplatt® is gleioL ·. © ^ way: © in ^ eiastsr, ■ in.- the one-moptrie- scale aiiigeseicSmet, is ₉ - ^: its! Eeilimgsstriolie on an egg Eaatsii Hs! iadeii ₉ . the sugleicli '-. dl © -§rimälinia bilSet _s and ciaS di © o@io.sii MeSplati; -en · "so la-» las Opirba, laioai @ ter eia ~ are iced, clsfi- in deiä ötireii das' Eyepiece: -dea öplatalmometere ■ ^ eouaclioe-sea BiIS the two '.feundliiiien ". susasimeafallsB- mti umB die ^: lSiist8P sv? e "i Bereiclie -Mldsn, the su two Sei'fsa äaz ⁵ göaeiiasamea Gr'on & Ii &ie" lie _$ wolsei fiie ^: Bs2tigs- "line soaann izi- ^: BsBiig on .the lines of the diopter «• aaistaos laittals .derSiiis-teXlorgsae des Ophtalmometera 2 _O 'Msßpiatter.sa.ts nacli Anapruoli "1 _f - dad because g that the SfeBplattes. -In each case _® iaer" farlaigsn -.-! Light source SKgaoröxiat- "ainö _? " Wid "that the- fsr" be egg-oeiden li same XSiJ ₀ 3 _e iBSplat'Gensäia ■ quickly Ansipiiisla "1 or -2 ₅ -dsai ^ ch geJsenaseiemist _s das Each; EsSplstts sv? El - i} iv, rsi.liel zn άΦΤ Snmiltai VSSIt'current equalsXinien- has _? - "those on both sides and at the same distance" .voa the feundlinle all end May 5 s .1-5) arranged © i 4, - MaBplatteasats nails claims 1 'to 3 ₉ . . thereby -seilokB.et ₅ dag the bioptric scale as a measuring range of meobM- Bioptr-iesi esitspriclit'iind in.units of .hallo 5 «measuring plate sats rtseh a daic * vophepgeheiiden claims» dadtirch marked? . that springs B & Zugsstpieh des Opiithalmöiaetej? ©. with a scale calibrated in 1/2-DioptMen a © Dieke - equal to half the death] between the axes successive foigesid © ^ lines given WÄNWÄBre DR.-ING. H. FhNCKS, D1PL.-INS. H. BOHff 01PWKG