CN102867448A

CN102867448A - Classroom demonstrator for pinhole imaging

Info

Publication number: CN102867448A
Application number: CN2012103915145A
Authority: CN
Inventors: 代顺林
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-16
Filing date: 2012-10-16
Publication date: 2013-01-09

Abstract

The invention discloses a classroom demonstrator for pinhole imaging. The classroom demonstrator comprises a projector, wherein a digital camera is connected onto the projector through a data line, a semi-transparent partition board divides the space in a rectangular dark box into a high-light room and a dark room, a triangular hole with the side length of 20-30mm is arranged at the center of the partition board, a turntable is rotatably installed on the partition board on one side inside the high-light room, and a round of micropores corresponding to the triangular hole are respectively arranged on the turntable with the rotating shaft as the center, wherein the micropores comprise a scallop hole with the diameter larger than the triangular hole, at least five round holes with the diameter ranging from 10-0.2mm and decreasing gradually, and at least three crack holes with the length of 60-30mm, the width of 3-0.2mm and the length and width decreasing gradually. A powerful light-emitting body is installed in the high-light room, a movable optical screen is installed in the dark room, and an observation hole penetrating outwards is arranged on a box wall in the inclined direction of the optical screen. The classroom demonstrator has the advantages of being high in luminance, clear in image and good in demonstrating effect.

Description

Pinhole imaging system class demonstration instrument

Technical field:

The present invention relates to optical instrument, particularly be applicable to the pinhole imaging system class demonstration instrument of the teaching of Middle School Physics or school science, popular science propaganda.

Background technology:

The pinhole imaging system phenomenon is that the direct propagation performance owing to light produces, and it and mirror-reflection imaging, lens reflection imaging are stood like the legs of a tripod and jointly consisted of complete geometric optical imaging system, and the status in teaching and popular science propaganda education can not be substituted.But the pinhole imaging system instrument that uses in the teaching at present structurally mostly imitates camera, is comprised of aperture, darkroom, imaging screen, and imaging screen is selected frosted glass or paraffin paper.The defective that exists is that imaging is secretly blured, and does not reach the purpose of teaching demonstration.

Summary of the invention:

The purpose of this invention is to provide that a kind of clear picture, brightness are high, the pinhole imaging system class demonstration instrument of good demonstration effect.

Technical scheme of the present invention is finished as follows, pinhole imaging system class demonstration instrument, it includes a projector, in projector, be connected with a digital camera head with data line, it is characterized in that: in an opaque case with translucent dividing plate with case in spatial separation become a high light chamber and a darkroom, the delthyrium that to be provided with a length of side at the dividing plate center be 20-30mm, dividing plate in the indoor side of high light is equipped with a rotating disk, centered by rotating shaft, be respectively equipped with the circle micropore corresponding with delthyrium on the rotating disk, an aperture is wherein arranged greater than the scallop hole of delthyrium, at least five diameter circular holes that the aperture diminishes gradually between 10-0.2mm, at least three length are 60-30mm, width is the wide seam hole that diminishes gradually, 3-0.2mm hole, at the high light indoor location a strong luminophor is arranged, be covered with a square hole guard at strong luminophor, a removable optical screen is installed in the darkroom, the outside penetrating viewport that has on the tank wall of the opposite slightly to the right or left of optical screen, the tank wall in optical screen and strong luminophor installation place is respectively equipped with a door that can stretch into hand.Strong luminophor is electricity-saving lamp or LED luminophor.At the indoor micromachine that is provided with a driving dial rotation of high light.

It is high that the present invention has brightness, the advantage of clear picture, good demonstration effect, and making easily, and cost is low, stable performance, have widely promotional value.

Description of drawings:

Fig. 1 is structural representation of the present invention; Fig. 2 is the annexation schematic diagram of rotating disk of the present invention and translucent dividing plate.

Embodiment:

Describe by reference to the accompanying drawings embodiment in detail, the present invention includes a projector 13, be connected with a digital camera head 14 in projector with data line 11, its improvements be in an opaque case with translucent dividing plate 15 with case in spatial separation become a high light chamber 3 and a darkroom 6, the material of translucent dividing plate can be selected translucent glass or organic glass, plastic plate etc., also can stick one deck semitransparent thin film at clear glass sheet material, it is that the brightness of the brightness of the luminous object seen by translucent dividing plate and pinhole imaging system approaches and gets final product that translucent degree requires.Be provided with a delthyrium 9 at the dividing plate center, the length of side of delthyrium is 20-30mm, dividing plate in the indoor side of high light is equipped with a rotating disk 4, centered by rotating shaft, be respectively equipped with the circle micropore corresponding with delthyrium on the rotating disk, an aperture is wherein arranged greater than the scallop hole 19 of delthyrium, five diameter circular holes that the aperture diminishes gradually between 10-0.2mm 18, three length are that 60-30mm width is 3-0.2mm, the wide seam hole 17 that diminishes gradually, hole, at the high light indoor location a strong luminophor 2 is arranged, and be covered with a square hole guard 1 at strong luminophor, strong luminophor can be electricity-saving lamp or LED luminophor, in the darkroom, be provided with a movably optical screen 7, the outside penetrating viewport 10 that is provided with on the tank wall of the opposite slightly to the right or left of optical screen.Viewport can be observed in case for the individual, can insert again camera and demonstrate at screen 12 by projector.Tank wall in removable optical screen and strong luminophor installation place is respectively equipped with one can stretch into the door 8 and 16 that hand operates, also can be at the indoor stepless change micromachine 5 that a driving dial rotation is set of high light, only need during demonstration the demonstration optical screen is placed into appropriate location in the darkroom, light strong luminophor, then with hand or micromachine rotation rotating disk light being shone by one of them micropore and delthyrium straight line forms picture, is demonstrated by the screen of projector in the classroom by digital camera head on the optical screen.It has clear picture, good demonstration effect, has a teaching promotional value very much.Its advantage is to allow simultaneously the students and faculty jointly watch pinhole imaging system, can not only see picture, can also see object and aperture simultaneously.

Claims

1. pinhole imaging system class demonstration instrument, it includes a projector, in projector, be connected with a digital camera head with data line, it is characterized in that: in an opaque case with translucent dividing plate with case in spatial separation become a high light chamber and a darkroom, the delthyrium that to be provided with a length of side at the dividing plate center be 20-30mm, dividing plate in the indoor side of high light is equipped with a rotating disk, centered by rotating shaft, be respectively equipped with the circle micropore corresponding with delthyrium on the rotating disk, an aperture is wherein arranged greater than the scallop hole of delthyrium, at least five diameter circular holes that the aperture diminishes gradually between 10-0.2mm, at least three length are 60-30mm, width is the wide seam hole that diminishes gradually, 3-0.2mm hole, at the high light indoor location a strong luminophor is arranged, be covered with a square hole guard at strong luminophor, a removable optical screen is installed in the darkroom, the outside penetrating viewport that has on the tank wall of the opposite slightly to the right or left of optical screen, the tank wall in optical screen and strong luminophor installation place is respectively equipped with a door that can stretch into hand.

2. pinhole imaging system class demonstration instrument according to claim 1 is characterized in that: strong luminophor is electricity-saving lamp or LED luminophor.

3. pinhole imaging system class demonstration instrument according to claim 1 is characterized in that: at the indoor micromachine that is provided with a driving dial rotation of high light.