JPS60125828A - Optical modulating method - Google Patents

Abstract

PURPOSE:To obtain an excellent optical modulator having high resolution and excellent drivability, productivity, durability and reliability by heating the monomolecular film or the cumulative film of the monomolecular layer consisting of a prescribed org. compd. by a means for generating heat according to an input signal thereby changing the refractive index distribution. CONSTITUTION:A display element DE consists of a base plate 1, a heating element 2, a monomolecular film or cumulative film of the monomolecular layers consisting of org. compd. molecules having a hydrophobic part and a hydrophilic part and a base plate 4 for protection. The prescribed position of the element 2 is heated by the input signal conforming to the certain pattern for the purpose of forming an image to generate a change in the refractive inde in the heated part 5. When parallel illuminating light 7 is projected from the base plate 1 side, the optical path changes and the prescribed display is obtd. The display device having high resolution and excellent drivability, productivity, durability and reliability is thus obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel light modulation method, and more particularly to an optical element used in a light modulation device, a display device, a recording device, a storage device, etc.

Currently, cathode ray tubes (so-called CRTs) are widely used as terminal displays in various office equipment and measuring instruments, or as displays in televisions and video camera monitors. However, there are still complaints about CRTs that they do not reach the level of hard copies made using silver printing or electrophotography in terms of image quality, resolution, and display capacity. In addition, as an alternative to CRT, attempts are being made to put so-called liquid crystal panels into practical use that display dot matrix images using liquid crystals.
Nothing satisfactory has yet been achieved in terms of driveability, reliability, productivity, and durability.

Therefore, an object of the present invention is to solve the problems that could not be solved by the conventional techniques in this technical field.

In other words, it is an object of the present invention to provide light modulation for use in light modulation devices, display devices, recording devices, storage devices, etc. that display high-resolution, high-quality images and have excellent drive performance, productivity, durability, and reliability. The purpose is to provide a method.

The light modulation method of the present invention heats a monomolecular film or a monomolecular layer cumulative film made of organic compound molecules having a hydrophobic part and a parent part by means of generating heat in accordance with an input signal, and the refractive index distribution thereof is It is characterized by changing the wavefront of the incident light beam.

Examples of display elements using the light modulation method according to the present invention will be described below with reference to the drawings. FIG. iB is a cross-sectional view of a display element using the light modulation method according to Kihatsu IJll, FIG. 1(A) is a transmissive display element DE, and FIG. 1(B) is a reflective display element. DE is shown respectively. l is the substrate, 2
3 is a heating element, 3 is a monomolecular film or a monomolecular layer stack, and 4 is a protective substrate.

The imaging principle of the transmissive display element of the tlffi (A) is as follows:
It is as follows.

A desired position of the heating element 2 is heated according to a certain pattern for image formation, and physical property changes are caused in the heated portion 5 of the monomolecular film or monomolecular layer cumulative film 3 of the heated heating element 2. . When illumination light 7, which is parallel light, is incident from the substrate 1 side of this display element, the refractive index etc. of the light passing through the parts other than the heating section 5 and the light passing through the heating section 6 are different, and the optical path changes. do. Capture and display this change directly or indirectly.

In the reflective display element shown in FIG. 1 ζB), the irradiation light 7
Contrary to the transmission type, the light enters from the protective substrate 4 side and is reflected by a reflection film (not shown) provided on the substrate 1 side from the monomolecular film or monomolecular layer cumulative film 3, and the heating part 5 and the heating part 5 Changes in the optical path of reflected light reflected at other parts are captured and displayed.

As the constituent molecules of the monomolecular film or monomolecular layer stack of the optical element of the present invention, a wide variety of organic compounds can be used as long as they have a hydrophobic part and a parent part in the molecule.

Examples of such organic compounds include the following.

(1) Higher fat sauce CH3 (CI-12)14 C00H CH3(CH2)16 C00H CH3(CH2)18 C00H CH3(CH2)4 (CH=CHCH2)4(CH2
)2 C00HCH2= 0H(Cth)e C00H
CH2 = Office CH ((J12) + s C00) lC
H2= DH(CH2)2゜C0DHCH3(CH2)
:□7CC00H 1) , CH2 CH3(CH2)8 C:= C-C= C(CH2)
8 C00HCH3(CH2)9 C Mi C-C Yo CCC
H2) a C00HCH3(CH2)l , G E C
J:MiC(CH2)8 C00HCH3(C:)12)
+3CyoC-CmiG(CH2)8 C00H(2) Cyanine dye general formula ■X(CH= 08hair-X' (in the formula, X is II or m group, and n is O or a positive integer).

(II) (Ill) (M (V) Factor (3) II Color X (7) In the formula, Z is NR,, O, Se
, C(Me)2, Y is H or 2-Me,
R, is a C1-4 alkyl group, and R2 is CIO-3
o is an alkyl group.

Specific examples of the cyanine dye represented by the general formula T are illustrated below.

(3) Azo dye (R is an alkyl group of C1o to 3o) (4) Phospholipid lecithin sphingomyelin plasmamalogen kephalin (5) Long chain sialkyl ammonium salt (m is an integer of .~3°) ) Methods for creating a monomolecular film or a monomolecular layer stack using the organic compound include, for example.

Langmuir Bloget developed by Langmuir et al.

1. method (La method) is used. langmuir broget
In the cyto method, when a molecule has a parent wood group and a hydrophobic group within the molecule, and the balance between the two (amphipathic balance) is maintained appropriately, the molecule is placed above the water surface with the parent wood group below. This is a method of creating a monomolecular film or a cumulative film of medium molecular layers by utilizing the fact that the film becomes a monomolecular layer. The monolayer at the water surface has the characteristics of a two-dimensional system. When the molecules are sparsely dispersed, the two-dimensional ideal gas equation nA=kT holds true between the area per molecule A and the surface pressure ■, resulting in a ``gas film''. Here, k is Portzmann's constant and T is absolute temperature. If A is made sufficiently small, the intermolecular interaction becomes strong and a two-dimensional solid becomes a "condensed film (or solid film)."The condensed film can be transferred layer by layer to the surface of a substrate such as glass.Using this method, , a monomolecular film or a monomolecular layer stack is manufactured, for example, as follows.

First, an organic compound is dissolved in a solvent, and this is expanded into an aqueous phase to precipitate the organic compound in the form of a film. Next, to prevent this precipitate from spreading freely on the ice phase and spreading too much, a partition plate (or float) is installed to limit the area of development and control the state of aggregation of the film material, and the Obtain the surface pressure n.

By moving this partition plate, the developed area can be reduced to control the state of aggregation of the film material, and the surface pressure can be gradually increased to set the surface pressure (2) suitable for producing a cumulative film. The monomolecular film is transferred onto the substrate by gently vertically moving the clean substrate up and down while maintaining this surface pressure. A monomolecular layer film is manufactured in the following two steps, and a monomolecular layer cumulative film having a desired degree of accumulation is formed by repeating the above-mentioned operations.

The film-forming component 7 is selected from one or more of the organic compounds mentioned above.

The thickness of the monomolecular film or the monomolecular layer stack is preferably 30 Å to 300 μm, particularly 3000 μm to 30 μm.

In addition to the vertical immersion method mentioned above, methods such as the horizontal deposition method and rotating cylinder method are used to transfer the 11-molecular layer onto the substrate.The horizontal deposition method is a method in which the substrate is brought into contact with the water surface horizontally. The rotating cylinder method is a method in which a cylindrical substrate is rotated above the water surface to transfer a monomolecular layer onto the substrate surface.In the vertical immersion method described above, when the substrate is lowered in a direction across the water surface, the first layer is removed from the mother tree. A monomolecular layer with the groups facing the substrate is formed on the substrate.As the substrate is moved up and down as described above, one monomolecular layer is overlapped with each step.The orientation of the molecules forming the film is raised. Since the process and dipping process are reversed, according to this method, a Y-shaped film is formed in which parent wood groups face each other, and hydrophobic groups face each other between each layer. A schematic diagram of the layer accumulation film is shown in Fig. 2. In the figure, 8-1
is a parent tree group, and 8-2 is a hydrophobic group.

On the other hand, the horizontal deposition method is a method in which the substrate is brought into horizontal contact with the water surface and transferred, and a monomolecular layer with hydrophobic groups facing the substrate is formed on the substrate. In this method, there is no change in the direction of the film-forming molecules even if they are accumulated, and in all layers, an X-shaped structure 11 is formed in which the hydrophobic groups are directed toward the substrate. On the other hand, a cumulative film in which all the layers have parent groups facing the substrate is called a Z-type film.

The rotating cylinder method is a method in which a cylindrical substrate is rotated on the water surface to transfer a monomolecular layer onto the surface of the substrate.

The method of transferring the monomolecular layer onto the substrate is not limited to these methods, and when using a large-area substrate, a method of extruding the substrate from a substrate roll into an aqueous phase may also be used.

Furthermore, the orientation of the aforementioned parent wood group and hydrophobic group toward the substrate is a general rule, and can be changed by surface treatment of the substrate, etc.

Other methods for creating a monomolecular film or a monomolecular layer stack include a sputtering method, a plasma polymerization method, and a bilayer film production method.

Examples of materials that can be used as the substrate 1 include glass, metals such as aluminum, plastics, and ceramics. In the case of the transmission type shown in FIG. 1(A), it is preferable to use pressure-resistant and transparent glass or plastic, especially colorless or light-colored ones. Also,
If the substrate surface is insufficiently cleaned, the monomolecular layer will be disturbed when it is transferred from the water surface, making it impossible to form a good monomolecular film or monomolecular layer accumulation, so use a substrate with a clean surface. There is a need.

As the protective substrate 4, a pressure-resistant and transparent glass or plastic is suitable, and a colorless or light-colored one is particularly preferable. Although it is preferable to provide the protective substrate 4 in order to improve the durability and stability of the monomolecular film or the monomolecular layer stack, the protective substrate 4 may be provided depending on the selection of the film-forming molecules. It does not need to be provided.

The heating element 2 generates heat in various forms such as a dot matrix shape (dotted line shape), a dot line shape (dotted line shape), a line shape, an island shape, etc., and heats a monomolecular film or a monomolecular layer accumulation film by heat conduction. It is for the purpose of

Examples of the heat generating element 2 include those that utilize radiation heating such as infrared rays, and those that utilize Joule heat such as resistance heating. As the former, various inorganic or organic materials are suitable, such as Gd*Tb*Fe alloys, inorganic pigments such as carbon black, organic dyes such as nigrosine, and organic pigments such as azo. As the latter, for example, metal compounds such as l\fnium boride and tantalum nitride, and alloys such as nichrome are suitable. The film thickness of the heating element 2 affects energy transfer efficiency and resolution. From these viewpoints, the suitable film thickness of the heat generating element 2 is 1000 to 2000 Å. When the display element is a transmissive type, the heating element 2 is required to be transparent to visible light.

However, even if the heating element 2 is not specially provided, the substrate 1 can also serve as the heating element by selecting a substrate material having the above characteristics.

As the reflective film, a metal film, dielectric mirror, etc. using a high melting point metal material or metal compound material is provided on the substrate 1 side from the monomolecular film or monomolecular layer cumulative film 3 by a Snok method, an interpolation method, a vapor deposition method, or the like. Similar to the heat generating element 2, the reflective film is also attached to the substrate l.
By selecting a material that can reflect light, the material can also be used as the substrate 1.

A monomolecular film or a stacked molecular layer film is fixed strongly enough to the substrate and hardly peels off or peels off from the substrate. An adhesive layer can also be provided between the monomolecular layer stacks. In the case of the LB method, the adhesive strength can also be strengthened by roughly selecting the monomolecular layer formation conditions, for example, the hydrogen ion concentration of the aqueous phase, the ion species, or the surface pressure.

The above-mentioned change in physical properties in the heating section 5 particularly means a change in optical properties, and specifically means a change in the refractive index of a molecular aggregate that constitutes a monomolecular film or a monomolecular layer cumulative film. ing. Due to the heat generated by the heating section 6 of the heating element 2, the monomolecular film or the monomolecular layer cumulative film 3 changes from the temperature t'C to the temperature (t+Δt).
Suppose that the temperature rises to °C. In this case, the refractive index of the monomolecular film or the monomolecular layer cumulative film at the temperature t'C is N, and the temperature (t
If this refractive index at +Δt)0C is N+ΔN, then the refractive index gradient is ΔN/Δtz−1o4 (1/′O). The rate of change in the refractive index, that is, the change in the refractive index with respect to temperature, is small, but when a minute region of the monomolecular film or monomolecular layer cumulative film 3 near the heating section 6 of the heating element is heated, the refractive index in the minute region changes. The gradient is large, and therefore, the heated portion 5 of the monomolecular film or monomolecular layer cumulative film 3 in the heated minute region has a nozzle, and light is refracted, scattered, and scattered in the small region of the refractive index gradient. Causes diffraction, etc.

The heating part 6 of the heating element 2 generates heat to form a monomolecular film or ff11.
The heating portion 5 is formed by heating to such an extent that the physical properties of the monomolecular layer cumulative film 3 change as described above. Since the other parts of the heating element 2 do not generate heat, there is almost no change in the physical properties of the corresponding monomolecular film or monomolecular layer stacked film 3 in the low temperature region, and the physical properties are approximately uniform. Even in the low-temperature region, it is actually heated by heat conduction from the heating section, etc., and the optical properties change, but this is relatively negligible from the perspective of the change in the heating section.

The illumination light 7 that passes through the heating section 5 of the monomolecular film or monomolecular layer stack is refracted, scattered, diffracted, etc. by the refractive index gradient (gratiend index) thermally generated in this part, and the monomolecular film is heated. Alternatively, the light does not travel straight through the monomolecular layer stack 3 but is refracted and changes its optical path. For this reason, the heating section 5 of the monomolecular film or the monomolecular layer stacked film is passed through the Jλ key. When the light emitted from the display element DE is emitted from the display element DE, it does not become parallel light, and their emitted directions are different from each other. When the heating part 6 of the heat generating element 2 stops heating, the heating part 5 of the monomolecular film or the monomolecular layer stack is cooled down and disappears, and the directions of the illumination lights 7 emitted from the display element DE all become the same direction. Therefore, the illumination light 7 that passes through the high-temperature region of the heating section 5 of the monomolecular film or monomolecular layer stack 3, and the illumination light 7 that passes through the low-temperature region of the monomolecular film or monomolecular stack stack that is not the heating section. are optically identified.

Although the display element using the light modulation method according to the present invention can be used for direct viewing under certain conditions (for example, illumination with parallel light), it can also be used as a display device in combination with the imaging optical system described below. Its uses and utility value will expand. In the case of direct view display of a transmissive display element, display pixels are determined based on the difference in the amount of light that reaches an observation eye (not shown) positioned with respect to the direction of the light that has passed through the heating section 5 of the monomolecular film or monomolecular layer cumulative film. can be identified.

In the case of a combination of a reflective display element and an imaging optical system described below, heating is performed by the imaging optical system of the monomolecular film or monomolecular layer cumulative film at the imaging position of the heating section 5 and by the heating element No. 2. The part of the monomolecular film or the monomolecular layer cumulative film 3 in the low temperature region (hereinafter referred to as the non-heating element 2) heating part and 1
Since the imaging positions of the imaging optical system (/\) are different, display points can be identified more clearly by defocusing. Therefore, by defocusing, a bright spot can be displayed as a dark spot in an inverted manner. When the imaging optical system described below is not used, parallel light is used as the illumination light 7 to increase the display effect of the display element 1.If a light-shielding grating as described later is attached, the display effect (drastically increased) In addition, in Fig. 1, the heating element 2 is arranged near the monomolecular film or monomolecular layer stacked film that requires heat generation at 1 and N, and the monomolecular film or monomolecular layer stacked film 3 is heated by heat conduction heating. For example, in FIG. 1(B), if the heat generating element 2 does not reflect light, a light reflective metal film is placed between the monomolecular film or monomolecular layer cumulative film 3 and the heat generating element 2. , a dielectric mirror, etc. may be interposed.

In addition, in FIG. 1, in order to make the explanation easier to understand, the light flux incident on the display element DE is assumed to be parallel light, or it is not limited to parallel light; 2, a high-temperature region of the monomolecular film or the monomolecular layer cumulative film 3, that is, the heating part 5, is formed in the optical path by the heat generated by the heating part 6 of No. It takes advantage of the fact that change occurs.

FIG. 3 is a cross-sectional view of a display element for more specifically explaining the principle of image formation of a display element using the light modulation method according to the present invention, and FIG. , and FIG. 3(B) respectively show reflective display elements.

In the figure, 9 is a radiation absorbing layer that absorbs radiation 10 and generates heat, 3 is a monomolecular film or a monomolecular layer stack, and 4 is a protective substrate. In addition, in the reflective display element DE shown in FIG. 3(B), the illumination used for display is 3.
A heating element layer 12 is used to heat the monomolecular film or the monomolecular layer stack 3 in advance. These reflections! 11, the heating element layer 12 is not necessarily required for the display element DEL, and may be provided as necessary. For example, the reflection Hgtt is not used when the radiation absorbing N9 is optically reflective. Further, even if the radiation intensity is sufficiently strong, the heating element layer 12i is not necessary.

However, since the heating element layer 12 will be described later, FIG.
B) will be explained assuming that the heating element layer is 12 layers. In addition, if necessary, the heating element layer 12ζ may be added as shown in FIG.
) is also provided in the transmissive display element shown in 5.

The radiation absorbing layer 9 efficiently absorbs radiation 10, especially infrared rays 1, and generates heat, but it is difficult to melt due to the heat generated.1. Must be %. This radiation absorbing layer 9f can be obtained by forming a film (including a multilayer film) of various inorganic or organic materials. Incidentally, since this radiation absorbing layer 9 itself is only a film, it generally has poor support function, so it is common to add a radiation-transparent support plate made of glass, plastic, etc. (not shown) as a substrate. . There are various types of organic compounds constituting the monomolecular film or monomolecular layer stack 3 as mentioned above, and those that are generally transparent to visible light are suitable, but those that are suitable for radiation such as infrared rays 10 are suitable. It does not matter whether it is translucent or not. Reference numeral 13 denotes a grating, which, when the monomolecular film or monomolecular layer cumulative film 3 is not heated up, enters the display element and passes through the transmissive display element, or is reflected by the reflective display element and leaves the display element. Emitted illumination light 7
is shielded from light. When the display element DE configured as described above is irradiated with radiation (especially infrared rays) 10 from the right side of the drawing, corresponding points on the radiation absorption layer 9 generate heat. When a part of the radiation absorbing layer 9 generates heat in this way, the monomolecular film or the monomolecular layer stack 3 in the part that is in contact with or in the vicinity of the radiation absorbing layer 9 is heated by thermal conduction, and the temperature rises. As a result, its physical properties change from before heating, and a heated portion 5 in the high temperature region of the monomolecular film or monomolecular layer stack 3 is formed. When the light beam 7 passing through the heating section 5 passes through the heating section 5, its optical path is changed by the mechanism described in FIG. When at least a part of the illumination light 7 that has undergone this optical path change exits the display element DE, the grating 13
pass through the opening. On the other hand, the illumination light 7 that does not pass through the heating section 5
are all blocked by the grating 13, so this grating 13
When the display element DE is viewed through the display element DE, the illumination light passing through the portion of the monomolecular film or monomolecular layer cumulative film in which the heating portion 5 is formed can be distinguished from the illumination light 7 passing through the non-heating portion.

Of course, if the illumination light 7 passing through the non-heating section is made to pass through the opening of the grating 13, when the heating section 5 is formed,
Since the illumination light 7 passing through this portion is blocked by the grating 13, there are also openings in the grating 13 through which the illumination light 7 does not pass, and a display element having the reverse form of the above-mentioned example is also possible.

Even if there is no grating 3, the direction of the illumination light 7 passing through the heating part 5 of the monomolecular film or monomolecular layer stack 3 and the direction of the illumination light 7 passing through the non-heating part are the same as those of the display element DE. Since the illumination light beams 7 are different from each other, the illumination light beams 7 can be optically distinguished when viewed in the direction in which either one of the light beams comes.

Note that when irradiating the display element DE with radiation @10,
It is possible to irradiate in a pattern corresponding to a predetermined image, or it is possible to use a laser light source to irradiate a large number of beams at once in a dot shape using radiation 1o as a beam. Alternatively, a method may be adopted in which the l-line beam is scanned over the radiation absorption M9.

Further, the direction in which the radiation 10 is irradiated is not limited to the illustrated example in the case of the transmissive display element DE shown in FIG. 3(A). That is, when the radiation 1° passes through the protective substrate 4 and the monomolecular film or the monomolecular layer stack 3, it is also possible to irradiate the radiation 1o from the left side of the drawing. Note that erasure of the 1 display is naturally performed by cooling the heating section 5 of the monomolecular film or monomolecular layer stack 3.

Although the method for forming display pixels by radiation heating has been described above, in the present invention, the radiation absorbing layer 9 in FIG. It is also possible to modify the monomolecular film or the monomolecular layer stack by bringing a heating element (not shown) in close proximity to or in contact with this to heat the monomolecular film or the monomolecular layer stack by conduction.

In the present invention, in order to further enhance the discrimination effect of display pixels, a visible light reflecting film 11 may be separately interposed between the radiation absorbing layer 9 and the monomolecular film or the monomolecular layer cumulative film as described above. can. Such a reflective film 11 needs to be formed of a high melting point metal material or metal compound material that does not melt itself during heat conduction.

In order to obtain an effective display in a display element using the present invention, it is necessary to heat the surface of the monomolecular film or the monomolecular layer stack 3 in contact with the radiation absorption layer 9 and its vicinity. It is not a requirement that the heating extends to the six sides of the monomolecular film or monomolecular layer stack 3 that are in contact with the protective substrate 4 and its vicinity; Experiments have shown that the higher the temperature of the surface of the absorption layer 9 in contact with the heating surface and its vicinity is higher than the temperature of the monomolecular film or the monomolecular layer cumulative film 3 in the surrounding area, the better the display contrast of the display element DE is improved. Ta. Furthermore, if this is actively utilized, it becomes possible to display halftones by varying the amount of heat for heating the monomolecular film or the monomolecular layer stack 3.

Incidentally, the smaller the irradiation spot diameter for irradiating the radiation 10 onto the radiation absorbing layer 9, the better the contrast of the display, and the suitable spot diameter (diameter) of the radiation 10 is approximately 0.5W to 100W.

However, a display image can be obtained even if the radiation absorbing layer 9 is irradiated with the radiation 10 in the form of a rectangular beam having a width of 2 mm and a length of 10 am. In the detailed description of the present invention, the heating section 5 of a monomolecular film or a monomolecular layer stacked film, which is often used, includes the latter range.

However, even if the heating part 5 of a monomolecular film or a monomolecular layer accumulation film is not minute, the temperature of the heating surface is not uniform, so the heating part 5
If there is a difference between the direction of the optical path of light in the non-heated part and the direction of the optical path of light in the non-heated part, a discrimination effect will occur. Therefore, in the present invention, the heating section 5 of the intermediate molecular film or the monomolecular layer cumulative film is not limited to a minute range.

In the display element using the present invention, as shown in FIG. 3(B), in order to greatly accelerate the formation speed of the heating portion 5 of the monomolecular film or monomolecular layer cumulative film as the display pixel, When a reflective film is not used, there is a gap between the radiation absorbing layer 9 of the display element DE and the monomolecular film or the monomolecular layer accumulation H3, and when a reflective film is used, between the radiation absorbing layer 9 and the reflective film 11. In some cases, it may be desirable to preheat a predetermined monomolecular film or monomolecular layer stack by providing a heat generating layer 12 that generates heat by Joule heat between the two layers. At this time, if the radiation absorbing layer 9 or the reflective film 11 is a conductor, it is desirable to provide an insulating layer (not shown) between them and the heating element N12.

As such a heating element layer 12, a dowel, a linear heating element corresponding to one or more scanning lines of a radiation beam, a grid-shaped heating element (none of which are shown), etc. are suitable. When the heating element layer 12 is a linear heating element, it is thought that good display results can be obtained because the heating portion is minute in the width direction. At this time, the radiation absorption layer 9 is irradiated with the radiation 10 and the heating element layer 1
It is preferable to synchronize the heating of the monomolecular film or monomolecular layer stack 3 by 2. Examples of the material for the heating element fi12 include metal compounds such as hafnium boride and tantalum nitride, and alloys such as nichrome.

In addition, in the present invention, a structure of the display element in which a corrosive component comes into direct contact with a monomolecular film or a monomolecular layer stack should be avoided since this will shorten the life of the element. It is. This is because in a configuration in which a corrosive component is in contact with a monomolecular film or a monomolecular layer stack, chemical corrosion, thermal deterioration, etc. occur, and the display element is often damaged or deteriorated.

Therefore, in such cases, it is desirable to form a corrosion-resistant protective film (not shown) at the interface between the monomolecular film or the monomolecular layer stack and the corrosive component.

Examples of the material for this protective film include dielectrics such as silicon oxide and titanium oxide, heat-resistant plastics, and the like. A reflective film may also serve as this protective film.

Note that when a metal or the like is used as the radiation absorption layer 9, it is generally formed into a film on a radiation-transparent support plate as a substrate. There is no need to worry about it being oxidized by external air.

If the radiation absorption rate of the radiation absorption layer 9 is not perfect,
An anti-reflection coating (not shown) is provided on the side to which the radiation 10 is irradiated.
By applying this, it is also possible to significantly increase the absorption rate of radiation IO of radiation absorption N9.

Next, the light valve type projection device will be explained with reference to FIGS. 4 and 5. A light valve is a device that controls or adjusts light, and therefore, it is used to transfer light from an independent light source to a suitable medium (in the case of the present invention, a monomolecular film or a monolayer stack of a display element). This includes all displays that are controlled and projected onto a screen. Compared to self-luminous displays such as cathode ray tubes, this method can, in principle, increase the size and brightness of the display screen by increasing the intensity of the light source used. Suitable for screen display.

Among these, the one shown in Figure 4 is also called a Schlieren light valve, and it adjusts the refraction angle, diffraction angle, or reflection angle of light to the control medium, which is a monomolecular film or a monomolecular layer stack, according to an input signal. In this method, a pattern with different values or a pattern by scattering is created, and a Schlieren optical system is used to convert the changes into brightness and darkness images, which are then projected onto a screen.

FIG. 4 is a schematic configuration diagram for explaining the basic principle of the display device. The images of each slit of the first grating 13a are arranged so as to be respectively formed by the schlieren lens 14 onto each par of the second grating 13b so as to be shielded from light. The monomolecular film or monomolecular layer cumulative film as a medium of the transmission type display element DE placed between the schlieren lens 14 and the second grating 13b is not heated, and its physical properties (for example, refractive index) are If the surface is uniformly smooth, all incident light passing through the first grating 13a will be blocked by the second grating 13b and will not reach the screen 15. However, when a part of the monomolecular film or monomolecular layer accumulation M3 of the display element DE is heated by the heating element to a high temperature and a heated portion 5 of the monomolecular film or monomolecular layer accumulation film is formed, Since the optical path of the passing light changes as described above, the incident light 16 passing through it changes.
reaches the screen 15 through the gap (opening) of the second lattice 13b without being blocked by the second lattice 13b. Therefore, if the imaging lens 17 is arranged so that the heating surface heating the heating section 5 of the monomolecular film or monomolecular layer cumulative film of one display element DE or the medium surface in the vicinity thereof is imaged on the screen 15, A contrast image corresponding to the amount of temperature change of the monomolecular film or the monomolecular layer stack of the display element DE is obtained on the screen 15. Note that the openings of the first and second gratings 13a and 13b used for this may be linear or dotted.

FIG. 5 is a schematic configuration diagram of a transmission type light valve type projection device, and shows an example of arrangement of signal input means for a transmission type display element. 13a is a first grating, DE is a transmission type display element, 14 is a Schley lens, 13b is a second grating, 17
1 is an imaging lens, and 15 is a screen, the construction of which is similar to that of the display device shown in FIG. Radiation modulated through a laser light source and a light modulator (not shown) (mainly,
The infrared rays) 1O signal light is horizontally scanned by a rotating polygon mirror serving as a horizontal scanner 18, and passes through a lens 20,
It is vertically scanned by a rotating polygon mirror or a galvanometer mirror as a vertical scanner 19, reflected by a cold filter 21, and imaged on the radiation absorption layer 9 of the transmission type display element shown in FIG. 3(A), A monomolecular film or a monomolecular layer accumulation film is heated in a dot matrix shape to form a two-dimensional image of the heated portion 5 of the monomolecular film or monomolecular layer accumulation film. On the other hand, since the incident light 16 that has passed through the first grating 13a passes through the cold filter 21, the monomolecular film or monomolecular layer cumulative film of the display element DE is formed on the screen 15 by the mechanism described above in FIG. A two-dimensional visible image corresponding to the heating section 5 is formed. Of course, the radiation absorbing layer of the display element DE used in this figure must be transparent to visible light.

Note that semiconductor laser arrays or light emitting diode arrays (
If G1 is used (one lined up in a line), the horizontal scanner is omitted. Also, the cold filter and galvano mirror may be used in common. X.

FIG. 6 is a block diagram of a Wright 7 Helb type projection device as a display device utilizing the light modulation method according to the present invention.

22 is a video generation circuit that generates a video signal; 23 is a control circuit that controls the video signal and supplies this signal to a video amplification circuit 24 and horizontal and vertical drive circuits 25; 26 is a laser light source; an optical modulator that modulates the laser beam according to a signal from an image amplification circuit (24);
The light modulated by the optical modulator 27 enters the horizontal scanner 18 or if the vertical scanner 19. Further, the horizontal scanner 18 and the vertical scanner 191 operate in response to drive signals synchronized with the video signals from the horizontal and vertical drive circuits 25, respectively. The configuration of the other portions within the broken line is the same as the configuration described above, so the description thereof will be omitted.

The output video signal of the IEM Ri 2 is amplified by the video amplification circuit 24 via the control circuit 23. The optical modulator 27 is driven by the input of the amplified video signal and modulates the laser beam emitted from the laser beam @26. On the other hand, a horizontal synchronization signal and a vertical synchronization signal are outputted from the control circuit 23 and drive the horizontal scanner 18 and the vertical scanner 19 via the horizontal and vertical drive circuits 25, respectively. In this way, a thermal two-dimensional image is formed within the monomolecular film or monomolecular layer stack of the display element DE. The subsequent configuration operations within the broken line are as described above and will be omitted here for simplicity. Note that when receiving TV radio waves, a receiver may be used instead of the video generation circuit 22.

FIG. 7 shows an example of a color display element using the light modulation method according to the present invention. For convenience of explanation, a cross-sectional view is shown in which the two halves are a transmissive display element and the lower half is a reflective display element. This is an indication. 9 is a radiation absorption layer, 11 is a reflective film, and 1
It is not provided in the transmissive display element shown in the upper half of this figure. 28 is a color mosaic filter, and its specific structure and manufacturing technology have already been published in Japanese Patent Publication No. 52-1.
Since it is as explained in detail in Japanese Patent Publication No. 3094 and Japanese Patent Publication No. 52-38019, the detailed explanation will be omitted here as these are cited.

3 is a monomolecular film or a monomolecular layer cumulative film, 4 is a protective substrate, 2
8 indicates a color mosaic filter.

In the illustrated example, the monomolecular film or monomolecular layer cumulative film 3 in contact with the red filter part (R) of the curler mosaic filter 28
is heated by thermal conduction by the radiation absorbing layer 9 that has absorbed the radiation 10, and when a heated portion 5 of a monomolecular film or a monomolecular layer cumulative film is formed thereon, it is reflected by the reflective film 11 or the radiation is heated by the radiation absorption layer 9. The collimated illumination light 7 that has passed through the absorption layer 9 passes through the heating section 5 of the monomolecular film or monomolecular layer stack, and by the mechanism described above, when there is no heating section 5 as shown by the broken line. The light is emitted from the display element DE through a bent optical path as shown by the two-dot chain line, which is different from the optical path of the light that has passed through. The white light passes through the red filter section (
When the light enters the display element DE, the only transmitted light or reflected light that comes out of the display element DE is the light that makes red visible (hereinafter referred to as red light). The path of the light passing through the blue filter section (B) and the green filter section (G) is also the same as the path of the light passing through the red filter section (R). However, in the case of FIG. 7, only the light rays that do not pass through the heating section 5 are shown for the green filter section (G). Also,
When the incident light is white light, the light that has passed through the blue filter section CB) is the light that makes blue visible (hereinafter referred to as blue light).
Furthermore, the light that has passed through the green filter section (G) is only the light that makes green visible (hereinafter referred to as green light). When viewing the display element DE in the direction of the light passing through the heating section 5 of this monomolecular film or monomolecular layer cumulative film, an observer (not shown) sees pseudo-color due to the additive coloring method. It is something. For example, the red filter part (R) and the green filter part (G) of the adjacent color mosaic filters 28 are
), when the monomolecular film or monomolecular layer cumulative film 3 is simultaneously heated in the blue filter part (B) to form the heated part 5, an observer (not shown) can see white.

Further, as explained in FIG. 3, only the light passing through the heating section 5 of the molecular film or monomolecular layer cumulative film is transmitted through the opening of the light-shielding grating (not shown). By passing the image through , it is possible to obtain a clearer pseudo-color display using the additive coloring method.

FIG. 8 is a cross-sectional view of another display element using the light modulation method according to the present invention. FIG. 8(A) is a transmissive type display element, and FIG. 8(B) is a reflective type display element. shown respectively. In the figure, 3 is a monomolecular film or a monomolecular layer stack, 4 is a protective substrate, and 28 is a color mosaic filter, which have the same functions as those explained in FIGS. 1 and 7. It is an element that has. 29 is a thermally conductive insulating layer, and on both sides thereof, a plurality of heating resistance wires 30 and 31 as heating elements are arranged in a matrix shape so as to cross each other with the insulating layer in between.
Next is the arrangement. ■ is these heating resistance wire 30.3
1 and an insulating layer 28 . In the case of the transmission type display element DE shown in FIG.
It is composed of a transparent thin film of tin oxide. In these display elements DE, only when the predetermined heating resistance wires 30 and 31 are both selected and generate heat, it is possible to display in the monomolecular film or the monomolecular layer cumulative film 3 in the intersection area of both. It is designed so that a heating part (not shown) in a high temperature region is formed. The color mosaic filter may be provided at least at the intersection of the heating resistance wires 30 and 31. Further, as described above in FIG. 4, the reflective film 11 is provided as necessary.

Next, an example of matrix driving of one display element will be described in more detail using FIG.

In the figure, DE indicates a display element, which has the same detailed configuration as explained in FIG. 8. This display element DE is XI,
Xm, Xn, Xo, Xp material axis heating resistance wire (
These are called row lines) and column-axis heating resistance wires Yc, Yd, and Ye (these are called column lines), and one of the column lines Yc, Yd, and Ye is connected to a common DC power supply. The emitters of the first and second transistors are grounded and connected to the collector sides of the transistors Trl to Tr3.

When a heating current path Jl/ is sequentially applied to the row lines XI, Xm', Xn, Xo, and Xp, the monomolecular film or monomolecular layer cumulative film (not shown) corresponding to these row lines is Although it is heated linearly, at this time, the degree of heating is set so that it is below the heating display threshold of the monomolecular film or monomolecular layer cumulative film, so that There is no heating area in the high temperature area for heating display. On the other hand, in synchronization with the application of the heating current signal, a video signal pulse is applied to the pace side of the transistors Trl to Tr3 whose emitters are grounded to turn on the transistors Trl to Tr3, thereby connecting these transistors Trl to Tr3, respectively. are doing. Predetermined video signals are applied to column lines Yc, Yd, and Ye. By applying this video signal, the monomolecular film or the monomolecular layer stack corresponding to the column conductors Yc, Yd, and Ye is linearly heated. As a result, at the intersection of the row line and the column line where the heating current pulse and the video signal are synchronized, heat is generated additively from both, and the degree of heating of the monomolecular film or the monomolecular layer accumulation film increases. When the display threshold is exceeded, a heating portion 5 of a monomolecular film or a monomolecular layer stack is formed at the intersection of the selected row line and column line.

In the above example, even if the driving method is changed as follows, images can be formed in exactly the same way. That is, even if a modification is made in which a video signal is applied to the row lines and a heating current signal is applied to the column lines, the effect is exactly the same. In this way, the display element DE illustrated in FIG. 9 also enables matrix driving. When the thickness of the monomolecular film or monomolecular layer cumulative film of the display element DE is very thin, as described above, by installing heating resistance wires arranged in stripes on both the protective substrate side and the substrate side. , the following effects occur.

■ The manufacturing process is simplified and the yield is improved.

■ Thermal efficiency is good because the monomolecular film or monomolecular layer stack is heated from both sides.

etc.

It is desirable to separately provide a heat sink to enhance the heat dissipation effect of the heat generating resistance wire. This heat dissipation plate←kotshiki=t (8th
Figure) can be used instead.

Note that it is not necessary that all of both signal lines be formed of heating resistors. Rather, in order to save energy, it is preferable to configure only the intersections of row lines and column lines with heating resistors, and configure the rest with good conductors such as AI, but this makes the manufacturing process more complicated. There are drawbacks to being.

Further, another example of a heat generating element as a heat generating element for configuring a display element suitable for matrix driving as shown in FIG. 9 will be explained with reference to FIG. 10.

FIG. 10 is an external perspective view schematically depicting a partial region of the heating element. In the figure, numeral 32 denotes a heating resistor layer, which is obtained by forming a known heating resistor (for example, if, nichrome alloy, boron/\fnium, tantalum nitride, etc.) into a planar film. (not shown) is this resistance layer 3
2, of course, extends downward in the drawing. Also, 33a,
33b, 33c, and 33d are all column conductors, and 34
A, 34b, and 34C are all row conductors. and,
All of these conductive wires are made of good conductors such as gold, silver, copper, aluminum, etc. (Although not mentioned, the conductive wires are generally covered with a 5i02 insulating film (not shown).) . In the illustrated heating element, for example, when the column conductor 33b and the row conductor 34c are selected and a voltage is applied to them, the part of the resistance layer 32 corresponding to the intersection 35 of the two is not energized. It causes fever.

In this way, any (row/column) intersection of the row conductor and the column conductor can be heated.

Therefore, the heating element shown in FIG.
In the display element incorporated in place of the heating element made of the insulating layer 28, it is possible to display a dot matrix image using a matrix driving method similar to the example shown in FIG.

By the way, in the heating element shown in FIG. 1O, the heating resistance layer 32 may be divided and provided only at the intersection of the row conducting wire 34 and the column conducting wire 33 (the conducting wires may be insulated from each other in other areas). This is possible, and in such a configuration (FIG. 5511), it is possible to substantially prevent the occurrence of costtalk, which is inconvenient for image formation faithful to the signal.

In the example of FIG. 1O, the row conductors 34a, 34b...
(hereinafter referred to as row conductors 34) and column conductors 33a, 33b.
...(hereinafter referred to as row conductor 33) is 5i02.513N
However, the insulating film in the intersection region of the row conducting wire 34 and the column conducting wire 33 is removed, and instead heating resistors 32a, 32b, . . . (hereinafter referred to as a heating resistor 32) is embedded.

Next, in FIG. 12, the heating element as the heating element shown in FIG. 11 is connected to the heating resistance wire 30.3 shown in FIG.
An example in which a display element incorporating one display element instead of the heat generating element consisting of the heat generating element 1 and the insulating layer 29 is driven in a matrix will be described in more detail. The material axis selection circuit 36 is a row axis drive circuit 37a.
, 37b... (hereinafter referred to as the row axis drive circuit 37) by a signal line, and each output terminal of each row axis drive circuit 37 is coupled to each row conductor 34. are doing. There are various ways to connect the output terminals and the row conductors 34, but in order to explain the basic aspect in this specification, there are as many output terminals as there are row conductors 34, and one output terminal connects the - row. Suppose it is connected to a conductor.

Dynamic axis selection circuit 38, dynamic axis drive circuit 38a, 3!3b, ・
The same applies to the relationship between the column conductor 33 (hereinafter referred to as the first column axis drive circuit 38) and the column conductor 33. The image control circuit 4° is electrically connected to the material axis selection circuit 38 and the moving axis selection circuit 38 by signal lines. The image control circuit 4o outputs an image control signal to instruct the material axis selection circuit 3B which nail axis to select, and the same applies to the moving axis selection circuit 38. That is, depending on the image control signal from the image control circuit 40, the material axis selection circuit 36 selects the row axis drive circuit 3.
Select (switch on) a particular nail axis (row conductor) via either 7. For example, when the material axis selection circuit 36 selects the row conductor Xp, it issues an Xp row selection signal, and in response, the row axis drive circuit 37Xp inputs a material shaft drive signal also to the row conductor Xp. On the other hand, the video signal, which is one of the image control signals from the image control circuit 40, is sent to the moving axis selection circuit 38.
When the command is input, the moving axis selection circuit 3B selects a predetermined moving axis (column conducting wire) in response to the command. For example, if the dynamic axis selection circuit 38 selects the column conductor Ye, the dynamic axis drive circuit 39Y
In response to the Ye column selection signal issued from the dynamic axis selection circuit 38, the column conductor Ye is turned on (conducting) by the switch φ.

If the selection of the nail axis and the selection of the moving axis are performed synchronously, in this example, the intersection point of the row conductor Xp and the column conductor Ye (selection point;
A current flows through the heating resistor located at p-Ye), generating Joule heat, and a heated portion is formed in a monomolecular film or a monomolecular layer accumulation film (not shown). Although a leakage current flows also at the non-selected points, the current value is less than the current value for forming the heating part of the monomolecular film or the monomolecular layer stack, so that no heating part is formed in the monomolecular film or the monomolecular stack stack. Furthermore, by providing the heating resistor with a diode function, the leakage current can be made even weaker.

In this way, in the same way as explained in FIG. 9, in FIG. 12 as well, the material shaft drive signal is used to perform line sequential scanning, and in synchronization with this, the moving shaft selection signal is output, and the moving shaft drive circuit A moving axis selection signal is output in response to a command to display a two-dimensional image by bringing the selected column conducting wire 33 into conduction via the line 39. At this time, the direction of the current flowing through the heating resistor does not matter. The row and dynamic axis selection circuits 36 and 38 and the row and dynamic axis drive circuits 37 and 38 are constructed by known techniques using shift transistors, transistor arrays, and the like.

In addition, even in the matrix drive display method using the heating elements described above, the display element DE having the configuration shown in FIG. 8(B) as described above in FIG. 3(B) also
If necessary, a monomolecular film or a monomolecular layer stack 1113, a reflective film or a monomolecular film or a monomolecular layer stack 3, and a heating element (
For example, by interposing a corrosion-resistant silicon oxide film or silicon nitride film between the heat-generating resistance wire 30), reaction corrosion between the monomolecular film or the monomolecular layer cumulative film and these can be prevented as appropriate. can.

In addition, the red filter part (R), the green filter part (G), and the blue filter part CB) of the color mosaic filter shown in FIG. In element DE, heat generator ray 3
0 and 3.1 (or, in the case of the heating element shown in FIG. 11, the heating resistor 32). By adopting a configuration similar to that shown in the example, it is of course possible to perform color display using the same principle as in FIG. 7 with a display element using the heating elements shown in FIGS. 8 and 11, respectively. 3) Yes.

(4) Such a matrix-driven display element can also be applied to the light valve type projection system shown in FIGS. 4 and 5. In addition to this, the present invention also applies to functional molecules such as photosensitive molecules, ferroelectric substances, complexes, and surfaces (5) that can be controlled by light, electricity, ions, etc. (6) by binding with active substances. It is also possible to obtain optical elements having molecular films or monomolecular layer stacks. (7) The main effects of the present invention are summarized as follows.
(8) (1) 1 of the heating part of minute monomolecular film or monomolecular layer cumulative film
Since these pixels can be arranged in high density as display pixel units, high resolution images can be displayed.

By adjusting the duration of the heating portion of the monomolecular film or the monomolecular layer stack as display pixels, it is possible to easily display still images or moving images including slow motion.

Multicolor display and full color display can be easily implemented.

Since the structure of the device is relatively simple, productivity is excellent, and the device has high durability and reliability.

Can be adapted to a wide range of drive systems.

Since a monomolecular film or a monomolecular layer stack can be produced using the Langmuir-Prodgett method, it is extremely easy to increase the area.

Since it does not use liquid like liquid crystal, it is easy to manufacture.
and safe.

The optical element using the light modulation method according to the present invention can be applied not only to display devices but also to light modulation equipment used in electrophotography and the like.

In order to explain the present invention more specifically, Examples are given below.

Example 1 A display element was manufactured as follows.

A radiation absorbing layer 9 was formed by depositing a 1500 Å thick Gd-Tb.Fe (gadolinium terebrium iron) layer on the surface of a 50 mm square glass substrate by sputtering. In order to prevent oxidation of this Gd-Tb-Fe layer,
A 5i02 overcoat was coated thereon.

Next, after thoroughly cleaning the above board, Joys-Lable (J
LB film manufacturing device Tr manufactured by oyce-L, oebl)
4X of (ough-4) 1. On”m port 1 CdCl2
immersed in an aqueous phase containing Then alchidic acid 5X 1
0.1 ml of chloroform solution containing 0 mol was dropped into the aqueous phase using a syringe. After volatilization of the chloroform, the alchidic acid monolayer had a surface pressure of 3 Qdyne/cm.
By repeating pulling and dipping at a rate of 1°Cm/win, a Y-type cumulative film with a thickness of 5 to 1 Qam was deposited on the surface of the SiO□ film, and a protective layer was applied on top of it. A glass substrate was covered as the substrate 4. Furthermore, 5 pieces/m+a are placed closely or close to the outer surface of the glass substrate 4.
A linear grid was installed.

A semiconductor laser that emits light at a wavelength of 830 r+m was used as a radiant heat source. The alchidic acid was heated by irradiation with a semi-dynamic laser, and the surface of the pond where the incident light beam passed through it was deformed, and a light modulation effect was confirmed.

Example 2 A display element was manufactured as follows.

Incidium tin oxide (IT-0) having a thickness of 1500 Å was applied to the surface of a 50 mm square glass substrate by sputtering. Next, a linear pattern of 10 wood/mm was formed by photoetching to obtain a transparent heating resistance wire 31. As the etching solution for T.O., a mixed solution of ferric chloride aqueous solution and hydrochloric acid was used. Next, an SiO film having a thickness of 200 OA was deposited on the surface of the glass substrate on which the transparent heating resistance wire 31 was placed by sputtering to form an insulating layer 29. Furthermore, IφT·0 with a film thickness of 1500 is applied thereon, and the transparent heat generating resistance wire 30 is formed by photoetching.
It was formed to be perpendicular to the

Next, a cumulative film of stearic acid was formed on the substrate to a thickness of 5 to 10 μm according to the same conditions and steps as in Example 1, and the glass substrate 4 was placed thereon.

A semiconductor laser that emits light at a wavelength of 830 na+ was used as a radiant heat source.

It was confirmed that when driven in combination with an appropriate Schlieren optical system, a certain light modulation effect can be achieved. That is, a predetermined portion of the stearic acid layer was heated by the irradiation with the semiconductor laser, and the wavefront of the incident light flux passing through the predetermined portion was deformed.

[Brief explanation of the drawing]

FIG. 1(A) is a cross-sectional view of a transmissive display element using the light modulation method according to the invention, FIG. 1(B) is a cross-sectional view of a reflective display element using the light modulation method according to the invention, Figure 2 shows
FIG. 3, a schematic diagram of a monomolecular layer cumulative film, is an explanatory diagram of the principle of image formation of a display element using the light modulation method according to the present invention,
In the case of a transmissive display element, FIG. 3(A) is similar to FIG. 3(B).
is the case of a reflective display element. 4 and 5 are schematic diagrams of a light valve type projection device incorporating a display element using the light modulation method according to the present invention. FIG. 6 is a block diagram of a light valve type projection device as a display device using the light modulation method according to the present invention. FIG. 7 is a sectional view of a color display element using the light modulation method according to the present invention, FIG. 8 is a sectional view showing a configuration example of a matrix-driven display element, and FIG. , a transmissive display element, and FIG. 8(B) is a reflective display element. FIG. 9 is a schematic explanatory diagram of an image forming method using the light modulation method according to the present invention, FIGS. Figure 12 is
FIG. 1 is a block diagram of a matrix drive display device. DE; display element 1: & plate 2-heating element 3; monomolecular film or monomolecular layer cumulative film 4; protective substrate 5: heating section 6 of monomolecular film or monomolecular layer stacking film: heating section 7 of the heating element : Illumination light 8-1: Oyagimoto 8-2. Hydrophobic group 9: Radiation absorption layer 10: Radiation 11: Reflection film 12: Heat generating layer 13: Grating 13a: First grating 13b: Second grating 14: Schlieren lens 15 Screen 16: Incident light 17: Imaging lens 18: Horizontal scanner 19: Vertical scanner 20: Lens 21: Cold filter 22: Image generation circuit 23: Control circuit 24: Image amplification circuit 25: Horizontal drive circuit, vertical drive circuit 26: Laser light source 27: Light modulator 28: Color Mosaic filter 2θ: insulating layers 30, 31/heating resistance wires 32, 32a, 32b, 33c,...: heating resistance layer 9
Heating resistors 33.33a, 33b, 33cm: Column conductors 34.34a, 34b, 34c.=: Row conductors 35-intersection portion 3B-nail axis selection circuit 37.3? a, 37b・-: Material axis drive circuit 38: Row axis selection circuit 39. 39a, 39h-: Dynamic axis drive circuit 40: Image control circuit Patent applicant Canon Co., Ltd. Fig. 1 Fig. 2] 2 (A) ( B) Figure 3 Figure 4 Figure 5 Figure 6 (A) (B) Figure 8 Proceedings Amendment (Method) April 2S, 1980 Commissioner of the Patent Office Sir 1, Indication of the case 1981 Year Patent Application No. 233858
No. 2, Name of invention Light modulation method (100) Canon Co., Ltd. Shipping date: March 27, 1980 6. Drawings subject to amendment. (No change in content)

Claims (1)

[Claims] A monomolecular film or a monomolecular layer stack consisting of organic compound molecules having a hydrophobic part and a parent part is heated by a means that generates heat according to an input signal to change its refractive index distribution, thereby changing the wavefront of the incident light beam. A light modulation method characterized by transforming.