CN202533723U

CN202533723U - Laser pointer clock based on holographic projection technology

Info

Publication number: CN202533723U
Application number: CN2012201263157U
Authority: CN
Inventors: 于佳; 吴学利; 戴光耀; 舒浩
Original assignee: Ocean University of China
Current assignee: Ocean University of China
Priority date: 2012-03-29
Filing date: 2012-03-29
Publication date: 2012-11-14
Anticipated expiration: 2022-03-29

Abstract

The utility model discloses a laser pointer clock based on holographic projection technology. The laser pointer clock based on the holographic projection technology comprises a light source, a laser pointer, a laser holography optical element, a laser pointer formation and motion control device and a diffuse scattering projection screen. The light source is arranged at the rearmost end, and the laser holography optical element, reflectors and the laser pointer formation and motion control device are placed before the light source in sequence. The diffuse scattering projection screen is independently placed in the forefront to receive a laser pointer and dial plate numbers formed by laser beams. The laser pointer clock based on the holographic projection technology has the advantages that laser serves as the laser pointer, display of the dial plate numbers is achieved by combination of the laser and the holographic projection technology, and good projection effect can be achieved in a large space; laser projection display with high grade of transparency and high diffraction efficiency is used; and the laser pointer clock is novel in structure, and has good space display effect.

Description

Laser pointer clock based on the line holographic projections technology

Technical field

The utility model relates to a kind of time set, particularly a kind of laser pointer clock based on the line holographic projections technology.

Background technology

Existing clock and watch all are the method that shows in kind, i.e. entity pointer, entity dial plate and entity watch core basically.Though existing clock and watch are very perfect on the function that shows the time, also have two major defects: the first, the form of existing entity clock and watch is difficult to that after having continued for many years novel display effect and strong visual impact are arranged again; The second, existing entity clock and watch are difficult to be made into the large scale product, and for example the entity clock and watch of dial plate diameter more than 10 meters are very rare, and cost of manufacture is also very expensive.

Summary of the invention

To the problems referred to above, the purpose of the utility model provide a kind of with laser as pointer, line holographic projections fabrication techniques clock face, laser pointer clock with better visual effect.

The utility model comprises light source, laser pointer, laser hologram optical element, laser pointer generation and motion control device and diffuse scattering projection screen; Said light source is in the end held, and places laser hologram optical element, catoptron and laser pointer before it successively and generates and motion control device; The diffuse scattering projection screen is placed on the forefront separately to receive laser pointer and the dial digital that laser beam forms.

Said light source is red, green, blue three look laser instruments.

Said laser pointer is to be projected on the higher diffuse scattering projection screen of common transparency by laser beam to form; Through adopting different laser wavelength (laser color); Realization is to the differentiation of hour hands, minute hand and second hand; What wherein the laser that produces of red laser was corresponding is second hand, and what the laser that blue laser produces was corresponding is minute hand, and what the laser that green laser produces was corresponding is hour hands; Splitting ratio through adopting different optical element adjustment light path, the parameters such as thickness of light beam are to realize the control to hour hands, minute hand and second hand.

Said laser hologram optical element is with the dial digital that generates clock; This element be one through holographic method laser hologram optical element that make, that record 12 numerical informations; As laser when quadrature is penetrated thereafter; On the diffuse scattering projection screen of its place ahead placement, can projection go out this 12 numerals, thereby produce the clock and watch numeral.

Said laser pointer generates and motion control device employing ATmega16L chip is a main control chip; As time source, peripheral chip also includes the 24C256 storage chip with quartz oscillator, the DS1302 time chip; And 2 miniature relays; 3 cover stepper motor and actuator assemblies come the control step motor accurately to be converted into the corresponding gyration value of each indicator by driver, thereby during accurately the walking of realization indicator.

The advantage of this novel practical is:

1, with laser as pointer, adopt laser to combine the line holographic projections technology to realize that dial digital shows, can realize good drop shadow effect on very big space;

2, use the laser projection of the high grade of transparency, high-diffraction efficiency to show; Its novel structure has good space bandwagon effect.Be imbued with artistry, have good demonstration effect and commercial exhibition effect.

Description of drawings

Fig. 1 is the utility model one-piece construction synoptic diagram.

Fig. 2 is that the utility model laser pointer generates and the motion control device structural representation.

Embodiment

Further specify the utility model below in conjunction with accompanying drawing and through specific embodiment.

As shown in Figure 1, the utility model comprises:

light source

1,2,3, and laser hologram

optical element

4,5,6,

catoptron

7,8,9, laser pointer generates and

motion control device

10,11,12 and diffuse scattering projection screen 16,17th, each laser beam.

Light source: in the present embodiment, adopted laser instrument, be respectively among Fig. 11,2, the red, green, blue light laser shown in 3 as light source.Wherein, what ruddiness was corresponding is second hand 15, and what blue light was corresponding is minute hand 13, and what green glow was corresponding is hour hands 14.

Laser pointer: as shown in fig. 1; The laser single beam that produces with light source (laser instrument) 3 is an example; This laser beam, is passed laser pointer and is generated and motion control device 12 through the reflection of catoptron 9 via laser hologram optical element 6; Behind the laser pointer that expands to elongated strip under the effect of the semi-cylindrical lens (seeing Fig. 2, parts 21) that install 12 inside, project to and form minute hand 13 on the diffuse scattering projection screen 16.

Laser hologram optical element: in order on the diffuse scattering projection screen, to generate digital dial plate; Adopt the laser hologram optical element (Fig. 14,5,6) of three same principle; In this element, write down the 1-12 relevant information of totally 12 numerals; During with correct direction incident, can projection go out this 12 numerals in the place ahead of this element, thereby on diffuse scattering projection screen 16, produce numeral from its rear as laser.This element can use 3 in three light beams, make digital dial plate brightness strengthen, and can in any light beam, use one, need adjust this position of components when using three, makes the optical imagery of three digital watch dishes overlap.

Catoptron: adopt

common plane catoptron

7,8,9, effect is the direction that changes and control the redgreenblue laser beam.

Laser pointer generates and motion control device: adopting the ATmega16L chip is that CPU forms the minimum system plate as control circuit; With quartz oscillator as time source; Peripheral chip also has the 24C256 storage chip; DS1302 time chip, and 2 miniature relays, assembly forming control systems such as 3 cover stepper motors and driver.Wherein, comprised synchronous pulley 18, belt 19, the stationary installation 20 of semi-cylindrical lens, semi-cylindrical lens 21, synchronous pulley 22, fixed support 23, and stepper motor 24.

Diffuse scattering projection screen 16 is the common higher diffuse scattering projection screen of transparency, can be with laser pointer and dial digital projection above that.

The course of work of the utility model is: laser instrument sends laser, transmits dial digital at screen behind the process laser hologram optical element, and continues across the laser hologram optical element; Arrive catoptron; Change direction through catoptron, incide laser pointer and generate and motion control device, the semi-cylindrical lens in this device are a fine rule with beam broadening; Advance to the diffuse scattering projection screen, as the pointer of clock and watch.Be the motion of control laser pointer; Use control circuit to come control step motor 24; Stepper motor drives the synchronous pulley 18 of below, drives top synchronous pulley 22 through belt 19, and semi-cylindrical lens 21 rotate with top synchronous pulley 22 through stationary installation 20.Requirement when accurately walking for reaching the laser clock, stepper motor is selected 1.8 ° stepping angle for use, and the phase current of 1.2A.Adopt 3 seconds for one-period motor walk the method in 3,3,4 steps, make pointer in every circle, rotate for 60 steps, accurately count the step, thereby during realization accurately the walking of pointer.

Claims

1. laser pointer clock based on line holographic projections technology; It is characterized in that it comprises light source, laser pointer, laser hologram optical element, laser pointer generation and motion control device and diffusion projection screen; Said light source is in the end held, and places laser hologram optical element, catoptron and laser pointer before it successively and generates and motion control device; The diffuse scattering projection screen is placed on the forefront separately to receive laser pointer and the dial digital that laser beam forms.

2. laser pointer clock according to claim 1 is characterized in that said light source is red, green, blue three look laser instruments.

3. laser pointer clock according to claim 1 is characterized in that said laser pointer is to be projected on the diffuse scattering projection screen by laser beam to form.

4. laser pointer clock according to claim 1; It is characterized in that said laser hologram optical element is with the dial digital that generates clock; This element be one through holographic method laser hologram optical element that make, that record 12 numerical informations;, can projection go out this 12 numerals on the diffuse scattering projection screen of placing in its place ahead, thereby produce the clock and watch numeral when quadrature is penetrated thereafter as laser.

5. laser pointer clock according to claim 1, it is characterized in that said laser pointer generate with motion control device employing ATmega16L chip be main control chip, with quartz oscillator as time source; Peripheral chip also includes the 24C256 storage chip; DS1302 time chip, and 2 miniature relays, 3 cover stepper motor and actuator assemblies; Come the control step motor accurately to be converted into the corresponding gyration value of each indicator by driver, thereby during accurately the walking of realization indicator.