Hand-held fundus cameraTechnical field
This utility model relates to medical imaging field, particularly relates to a kind of hand-held fundus camera.
Background technology
Hand-held fundus camera belongs to medical imaging field, is used for obtaining human eye retina's image, in order to healthcare givers checks that retinopathy or medical assistance personnel judge the state of an illness of other organ.Owing to the blood vessel on optical fundus is the blood vessel that human body uniquely can be observed directly by body surface, by fundus camera, healthcare givers can check whether the optic nerve on optical fundus, retina, choroid and refracting media exist pathological changes, by the assistance of fundus camera, other systemic disease can also be diagnosed and state of an illness judgement, such as by screening retinograph detection cerebral infarction, cerebral hemorrhage, cerebral arteriosclerosis, the cerebral tumor, diabetes, nephropathy, hypertension, retinopathy of prematurity, glaucoma, senescence degeneration of macula etc. simultaneously.More early detecting that these diseases are more conducive to clinical treatment, therefore fundus camera is commonly used to Clinical screening fundus oculi disease, becomes indispensable medical apparatus and instruments.
During use, described hand-held fundus camera is generally pressed on an eye of patient by healthcare givers gently, now the eyeball of the covered eyes of patient can be in random rotary state because optical fundus camera lens is internal dark, is unfavorable for that healthcare givers gathers the fundus photograph in zones of different.Additionally, due to optical fundus camera lens is internal dim, patient is difficult to fixing sight line to coordinate the photo that healthcare givers gathers optical fundus, specific region.In order to solve this problem, a kind of hand-held fundus camera with fixation lamp is occurred in that on market, described fixation lamp is arranged on the top of the photographic lens module of hand-held fundus camera, the radius of lens barrel the most not only can be made to become bigger, and bring bigger difficulty to assembling, and then reduce production efficiency, improve production cost.
In view of the above problems, it is necessary to provide a kind of hand-held fundus camera, to solve the problems referred to above.
Utility model content
For the deficiencies in the prior art, this utility model solves the technical problem that and is to provide a kind of hand-held fundus camera, this hand-held fundus camera guides patient to change direction of visual lines by the fixation lamp being arranged on diaphragm, and helping patient to fix direction of visual lines, in order to healthcare givers gathers fundus photograph.Owing to fixation lamp is arranged on diaphragm, thus reduce assembly difficulty, improve production efficiency, reduce production cost, reduce lens barrel radius.
For solving above-mentioned technical problem, the technical solution of the utility model is achieved in that
A kind of hand-held fundus camera, including housing and the optical fundus camera lens that matches with described housing, eyeglass and photographic lens module it is provided with in the camera lens of described optical fundus, described photographic lens module is between described eyeglass and described housing, it is additionally provided with diaphragm component in the camera lens of described optical fundus, described diaphragm component is provided with fixation lamp.
Further, described diaphragm component is between described eyeglass and described photographic lens module.
Further, described diaphragm component includes diaphragm and is fixedly mounted on the circuit board on described diaphragm；Being provided with groove on described diaphragm to accommodate described fixation lamp, described fixation lamp is fixedly mounted on described circuit board.
Further, described diaphragm being provided with the through hole passed through for light beam, two described fixation lamps lay respectively at the both sides of described through hole.
Further, the center of circle of described through hole, two described fixation lamp conllinear.
The beneficial effects of the utility model are: compared to prior art, this utility model hand-held fundus camera guides patient to change direction of visual lines by fixation lamp, and helping patient to fix direction of visual lines, in order to healthcare givers gathers fundus photograph, reduces the cooperation difficulty between doctors and patients.
Accompanying drawing explanation
Fig. 1 show the schematic perspective view of this utility model hand-held fundus camera.
Fig. 2 is the sectional view of hand-held fundus camera shown in Fig. 1.
Fig. 3 is the quick-fried according to figure of hand-held fundus camera shown in Fig. 1.
Fig. 4 is the structural representation of diaphragm component.
Fig. 5 is the structural representation of another angle of diaphragm component.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in detail.The example of these preferred implementations is illustrated in the accompanying drawings.The embodiment of the present utility model shown in accompanying drawing and described with reference to the accompanying drawings is merely exemplary, and this utility model is not limited to these embodiments.
At this, it can further be stated that, in order to avoid having obscured this utility model because of unnecessary details, illustrate only structure closely-related with scheme of the present utility model in the accompanying drawings and/or process step, and eliminating other details little with this utility model relation.
Additionally, it can further be stated that, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.
Referring to shown in Fig. 1, Fig. 2 and Fig. 3, this utility model hand-held fundus camera 100 includes housing 10 and the optical fundus camera lens 20 matched with described housing 10, and described optical fundus camera lens 20 is by being threaded onto on described housing 10.
Referring to shown in Fig. 1 and Fig. 3, described housing 10 includes main part 11 and the handle 12 formed that stretches out from described main part 11 side.It is provided with on described main part 11 and the optical signalling of the image of acquisition is converted to the imageing sensor (not shown) of digital signal, signal processing unit (not shown) and the display device 111 of display image.Described display device 111 is LCDs.Described handle 12, substantially in rectangular-shaped, be provided with battery case (not shown) and hide the lid 121 of described battery case.
Refer to shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, in described optical fundus camera lens 20, be provided with eyeglass 21, photographic lens module 22 and diaphragm component 23.Described diaphragm component 23 is between described eyeglass 21 and described photographic lens module 22, and described photographic lens module 22 is between described eyeglass 21 and described housing 10.Described diaphragm component 23 includes diaphragm 231 and is fixedly mounted on the circuit board 232 on described diaphragm 231.It is provided with two fixation lamps 233 on described circuit board 232, described diaphragm 231 is provided with the groove 234 accommodating described fixation lamp 233 and the through hole 235 passed through for light beam.Two described fixation lamps 233 lay respectively at the both sides of described through hole 235.The center of circle of described through hole 235, two described fixation lamp 233 conllinear.In the present embodiment, the quantity of described fixation lamp 233 is two, but in other embodiments, the quantity of described fixation lamp 233 can also set according to needing.Owing to described fixation lamp 233 is arranged on described diaphragm 231, thus reduce the assembly difficulty of described hand-held fundus camera 100, improve production efficiency, reduce production cost, also reduce lens barrel radius so that described hand-held fundus camera 100 more miniaturization simultaneously.
During use, patient can be allowed to watch the fixation lamp 233 turned on attentively, the sight line of patient is adjusted the light on and off adjustment being converted into fixation lamp 233, thus guide patient to change direction of visual lines, and help patient to fix direction of visual lines, so that healthcare givers gathers fundus photograph, and then reduces the cooperation difficulty between doctors and patients.
Compared to prior art, this utility model hand-held fundus camera 100 guides patient to change direction of visual lines by described fixation lamp 233, and helps patient to fix direction of visual lines, in order to healthcare givers gathers fundus photograph, reduces the cooperation difficulty between doctors and patients.Owing to described fixation lamp 233 is arranged on described diaphragm 231, thus reduce the assembly difficulty of described hand-held fundus camera 100, improve production efficiency, reduce production cost, also reduce lens barrel radius so that described hand-held fundus camera 100 more miniaturization simultaneously.
Of particular note, for the person of ordinary skill of the art, that is made under teaching of the present utility model changes for equivalence of the present utility model, must be included in the scope that this utility model claim is advocated.