CN105318204A - Flashlight for demonstrating convex lens imaging law - Google Patents
Flashlight for demonstrating convex lens imaging law Download PDFInfo
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- CN105318204A CN105318204A CN201410387976.9A CN201410387976A CN105318204A CN 105318204 A CN105318204 A CN 105318204A CN 201410387976 A CN201410387976 A CN 201410387976A CN 105318204 A CN105318204 A CN 105318204A
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- convex lens
- flashlight
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- outer sleeve
- illuminating lamp
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Abstract
The invention provides a flashlight for demonstrating a convex lens imaging law. The flashlight for demonstrating the convex lens imaging law comprises a shell, wherein an illuminating lamp is arranged at the middle portion of the inner chamber of the shell, a battery chamber which is used for providing power support for the illuminating lamp is arranged in the shell, a control switch is arranged outside the shell, the shell consists of an outer sleeve and an inner sleeve which is movably sleeved on the wall surface of the inner chamber of the outer sleeve and can be freely withdrawn, the battery chamber in which a lithium ion battery is installed is fixedly arranged at the rear portion of the inner wall surface of the inner sleeve, a focusing reflector is fixedly arranged on the inner wall surface of the front portion of the inner sleeve, a through hole is formed in the middle portion of the focusing reflector, and the illuminating lamp penetrates through the through hole, then is fixedly arranged at the lowest position of the concave surface of the focusing reflector and is electrically connected with the lithium ion battery and the control switch arranged at the rear portion of the inner sleeve; a convex lens is fixedly arranged at the front end of the outer sleeve and a notch for inserting a projection film is formed in the upper end of the front portion of the outer sleeve. The flashlight for demonstrating the convex lens imaging law has the characteristics of energy saving, strong interestingness and excellent actual demonstration performance, has a flashlight function and can also be used for demonstrating a convex lens imaging principle during teaching.
Description
Technical field
The present invention relates to a kind of demonstration mode flashlight, being specifically related to a kind of flashlight for demonstrating convex lens image-forming discipline.
Background technology
A typical flashlight has one via battery powered bulb and focusing mirror, and have for hand-held handle type shell, although be quite simply design, it is always slow was just invented to the late 19th century, was why because it must in conjunction with the invention of battery and bulb like this.Visible, battery and bulb are critical components, and existing bulb generally adopts tungsten lamp to steep, and there is luminous efficiency low, service life is shorter, the technological deficiency be easily burned; Existing battery adopts large size alkaline battery, there is the large but technological deficiency that flying power is not high of volume.
Our camera used in everyday, slide projector are all that the image-forming principle that make use of convex lens designs, and these baroque machines are how imaging on earth, be difficult to demonstrate out intuitively in teaching process, therefore be necessary design a kind of can be used for impart knowledge to students time demonstration convex lens image-forming discipline flashlight, under possessing the prerequisite of the portable and illumination functions of conventional flashlights, possess again the function of demonstration convex lens image-forming discipline, during convenient teaching, demonstrate the flashlight of convex lens principle intuitively.
Summary of the invention
The technical problem that the present invention solves: a kind of flashlight for demonstrating convex lens image-forming discipline is provided, teaching demonstration function is possessed while improving above-mentioned flashlight technological deficiency, intuitively, compactly can demonstrate convex lens image-forming discipline, the operation principle contained in slide projector, camera labyrinth is embodied intuitively, grasp the related physical knowledge of convex lens with facilitating student's convenient and efficient.
The technical solution used in the present invention: a kind of flashlight for demonstrating convex lens image-forming discipline, there is housing, illuminating lamp is provided with in the middle part of described housing housing cavity, also battery compartment is provided with for illuminating lamp provides electric power support and is positioned at enclosure interior, hull outside is provided with gauge tap, described housing by outer sleeve and pivot bush unit in outer sleeve inner chamber wall and arbitrarily the inner sleeve of pull form, described inner sleeve internal face rear portion is fixed with the battery compartment installing lithium ion battery, inner sleeve front inner wall face is fixed with focusing mirror, through hole is shaped with in the middle part of described focusing mirror, illuminating lamp is through being fixed at focusing mirror concave surface lowest part after through hole and electrically connecting with lithium ion battery and the gauge tap of being located at inner sleeve rear portion, described outer sleeve front end is fixed with convex lens, and outer sleeve nock is shaped with the notch of slotting projection film.
Wherein, described illuminating lamp is LED.
Preferably, described inner sleeve is flexibly connected by screw thread or draw-in groove with between outer sleeve.
The present invention's advantage compared with prior art:
1, the lighting device of this flashlight adopts LED, the colour temperature of LED reaches unprecedented height, close to the colour temperature even exceeding white light, but power consumption is lower, due to this body structure of LED, better reliability, has the advantage that flying power is lasting under same charge, and this cold light source is more suitable for concave lens focus place, the demonstration demonstration how directional light produces;
2, the battery of conventional flashlights is alkaline battery, and the present invention adopts lithium ion battery, greatly reduces volume and the thickness of battery, and electric power is relatively more lasting, is beneficial to the integral thickness reducing flashlight;
3, the housing of flashlight adopts the mode of Double-layered movable connection, focal length between convenient adjustment light source point and convex lens, carry out the directional light demonstration demonstration of focus place, the demonstration demonstration of slide projector enlarged image, realize regulating demo function manually, student can experience image or the dynamic change procedure of light beam in concrete operating process, with deep impression and directly perceived, practical operation excellent performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing 1, a kind of embodiment of the present invention is described.
A kind of flashlight for demonstrating convex lens image-forming discipline, there is housing, illuminating lamp 5 is provided with in the middle part of described housing cavity, housing can adopt the cost low plastic material being easy to manufacture and produce when manufacturing, for illuminating lamp 5 provides electric power support and be positioned at enclosure interior and be also provided with battery compartment in this device, the setting of battery compartment can convenient, flexible dismounting battery, battery is carried out to the operations such as charging, hull outside is provided with gauge tap 8, described housing by outer sleeve 2 and pivot bush unit in outer sleeve 2 inner chamber wall and arbitrarily the inner sleeve 1 of pull or advance and retreat form, described inner sleeve 1 internal face rear portion is fixed with the battery compartment installing lithium ion battery 6, inner sleeve 1 front inner wall face is fixed with focusing mirror 4, through hole is shaped with in the middle part of described focusing mirror 4, illuminating lamp 5 through be fixed at focusing mirror 4 concave surface lowest part after through hole and and lithium ion battery 6 and be located at inner sleeve 1 rear portion gauge tap 8 formed and electrically connect, electrically connect and completed by wire 7, concrete connected mode is the known technology of those skilled in the art, do not repeat at this, described outer sleeve 2 front end is fixed with convex lens 3, outer sleeve 2 nock with convex lens 3 is shaped with the notch 9 of slotting projection film, diversified projection film can be inserted in this notch 9, conveniently impart knowledge to students use, more baroque slide projector and projecting apparatus have light, that flexibility strong, usage range is wider superiority.
Illuminating lamp 5 described in this device is LED, the illuminating lamp 5 of this flashlight adopts LED, because the colour temperature of LED reaches unprecedented height, close to the colour temperature even exceeding white light, but power consumption is lower, due to the reason of this body structure of LED, better reliability, there is under same charge the advantage that flying power is lasting, and this cold light source is more suitable for concave lens focus place, the demonstration demonstration how directional light produces; The battery of conventional flashlights is alkaline battery, and the present invention adopts lithium ion battery 6, greatly reduces volume and the thickness of battery, ensure that the enduring quality of electric power flying power simultaneously, is beneficial to again the integral thickness reducing flashlight; The housing of flashlight adopts the mode of Double-layered movable connection, described inner sleeve 1 is flexibly connected by screw thread or draw-in groove with between outer sleeve 2, focal length between convenient adjustment light source point and convex lens, carry out the directional light demonstration demonstration of focus place, the demonstration demonstration of slide projector enlarged image, camera inverted image etc. dynamic demonstration and demonstration; Realize regulating demo function manually, student can experience image or the dynamic change procedure of light beam in concrete operating process, with deep impression and directly perceived, and practical operation excellent performance, also for teaching adds interest.
Above-described embodiment, just preferred embodiment of the present invention, is not used for limiting the scope of the present invention, therefore all equivalence changes done with content described in the claims in the present invention, all should be included within the claims in the present invention scope.
Claims (3)
1. one kind for demonstrating the flashlight of convex lens image-forming discipline, there is housing, illuminating lamp (5) is provided with in the middle part of described housing cavity, also battery compartment is provided with for illuminating lamp (5) provides electric power support and is positioned at enclosure interior, hull outside is provided with gauge tap (8), it is characterized in that: described housing can the inner sleeve (1) of pull to be arbitrarily made up of in outer sleeve (2) inner chamber wall outer sleeve (2) and pivot bush unit, described inner sleeve (1) internal face rear portion is fixed with the battery compartment installing lithium ion battery (6), inner sleeve (1) front inner wall face is fixed with focusing mirror (4), described focusing mirror (4) middle part is provided with through hole, illuminating lamp (5) is through being fixed at focusing mirror (4) concave surface lowest part after through hole and electrically connecting with lithium ion battery (6) and the gauge tap (8) of being located at inner sleeve (1) rear portion, described outer sleeve (2) front end is fixed with convex lens (3), and outer sleeve (2) nock is shaped with the notch (9) of slotting projection film.
2. a kind of flashlight for demonstrating convex lens image-forming discipline according to claim 1, is characterized in that: described illuminating lamp (5) is LED.
3. a kind of flashlight for demonstrating convex lens image-forming discipline according to claim 1, be is characterized in that: be flexibly connected by screw thread or draw-in groove between described inner sleeve (1) with outer sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410387976.9A CN105318204A (en) | 2014-08-01 | 2014-08-01 | Flashlight for demonstrating convex lens imaging law |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410387976.9A CN105318204A (en) | 2014-08-01 | 2014-08-01 | Flashlight for demonstrating convex lens imaging law |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105318204A true CN105318204A (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410387976.9A Pending CN105318204A (en) | 2014-08-01 | 2014-08-01 | Flashlight for demonstrating convex lens imaging law |
Country Status (1)
| Country | Link |
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| CN (1) | CN105318204A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731072A (en) * | 2017-11-08 | 2018-02-23 | 天津市海河中学 | Hand-held pinhole imaging system demonstrator |
-
2014
- 2014-08-01 CN CN201410387976.9A patent/CN105318204A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731072A (en) * | 2017-11-08 | 2018-02-23 | 天津市海河中学 | Hand-held pinhole imaging system demonstrator |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160210 |