JPH0627863A - Writing method for programmable optical element and hologram optical element and its software development supporting device - Google Patents

Abstract

PURPOSE:To substitute software for an optical system composed of hardware and to eliminate the need for positioning an optical system with respect to the writing method for the programmable optical element and hologram optical element and its software development supporting device. CONSTITUTION:The device is equipped with an input/output control means 6 which consists of a real-time hologram element 1, a temperature detecting means 2, a storage means 3, a control means 6, and an input/output terminal 7 and stores pattern data and position data on an optional hologram optical element and controlled object determination data in the storage means 3 through the input/output terminal 7, a rewriting control means 5 which writes the hologram optical element in the real-time hologram element 1 on the basis of the pattern data and position data inputted to the storage means 3 and temperature data from a temperature detecting means 2. and a controlled object determining means 4 which determines the function and position of the optional hologram optical element as objects to be controlled by a user with an operation signal inputted to the input/output terminal 7.

Description

Detailed Description of the Invention

[0001]

[Industrial application] An optical system (optical device) is an optical element (lens,
It is constructed by designing prisms, etc., manufacturing them, and combining them. However, the manufacturing of the optical element is generally complicated and involves multiple steps, and since alignment such as optical axis alignment is required at the time of combination, much time and labor are required. The present invention relates to a programmable optical element capable of replacing an optical system based on hardware with software, a method for writing a hologram optical element, and a software development support device that does not require alignment.

[0002]

2. Description of the Related Art FIG. 33 shows an "optical device" (JP-A-3-28).
8881) shows an optical device for controlling the position of a laser beam. A laser beam 109 emitted from the laser element 104 becomes parallel light expanded by the collimator lens 105 and enters a liquid crystal light valve (real-time hologram element) 106. Then, it is deflected by the action of the computer generated hologram (hologram optical element) written in the liquid crystal light valve (real-time hologram element) 106,
After passing through the lens 107, a laser beam spot is formed on a predetermined output surface 108. Rewriting of the liquid crystal light valve (real-time hologram element) is performed in advance in the memory 102.
This is realized by successively reading the pattern data stored in.

Under a coherent light source, a hologram can realize two or more functions of a classical optical element (lens, prism, etc.) by one, which is called a hologram optical element, and is already used for pickup of an optical disk or the like. Has been applied to. (See, for example, "Optical Pickup", Sho 63-74149). On the other hand, although the above-mentioned hologram optical element has a fixed function, a real-time (rewritable) hologram element whose function can be changed electrically, optically or magnetically has been researched and developed in various fields. (For example, "recordable and reproducible holographic device" Japanese Patent Laid-Open No. 1-315785). Further, since the hologram element changes the amplitude and phase of light in a spatial pattern, it is an optical spatial modulator that modulates the amplitude and phase of light in real time (see Optics Vol. 14, No. 1, 1985.2). However, a real-time hologram element can be formed.

[0004]

In the prior art, 1: The purpose is fixed and there is no versatility. 2: The computer generated hologram (holographic optical element) written in the liquid crystal light valve (real-time hologram element) is
It is difficult to build a complicated optical system that has one component at a certain time. 3: There is no mechanism for compensating for the aberration of the computer generated hologram (hologram optical element) caused by the thermal expansion of the liquid crystal light valve. 4: It is necessary to align the liquid crystal light valve (real-time hologram element) with another optical element (eg lens). 5: There is no mechanism for compensating for the aberration of the computer generated hologram (hologram optical element) caused by the wavelength fluctuation of the laser light incident on the liquid crystal light valve (real time hologram element).
There was such a problem.

[0005]

[Means for Solving the Problems]

1: A plurality of pattern data (hologram optical element) and position data created by the user can be input to a storage means (memory), and the hologram optical element is written to a real-time hologram element (liquid crystal light valve etc.) based on the data. . 2: The temperature of the real-time hologram element is detected, and the pattern is reduced so as to cancel the thermal expansion. 3: Instead of aligning objects, change the pattern or position of the hologram optical element written in the real-time hologram element. 4: The wavelength of the light incident on the real-time hologram element is detected, and the hologram optical element written in the real-time hologram element is rewritten for each wavelength.

[0006]

In the present invention, software (pattern data of hologram optical element, position data, control target data) is created from the optical system data created by the user by the software development support device of the present invention, By inputting from the input / output terminal of the programmable optical element, the required hologram optical element is formed in the real-time hologram element in the programmable optical element to construct an optical system.

To suppress the aberration of the hologram optical element caused by the thermal expansion of the real-time hologram element, the linear expansion coefficient at the temperature to is α, and the temperature data from the temperature detecting means attached to the real-time hologram element is t. , The pattern data of the hologram optical element created at the temperature to of the real-time hologram element is 1 / {1 + α (t−t
o)} times and write in the real-time hologram element.

The alignment between a plurality of hologram elements developed in the real-time hologram element of the programmable optical element and the light-receiving and light-emitting elements connected to the programmable optical element does not actually move an object, This is done by changing the pattern or position of the hologram optical element on the real-time hologram. This alignment is performed by the software development support device by judging whether or not the optical system constructed by the programmable optical element satisfies the specifications based on a signal from an image pickup element in the optical system, or by an external device. It is performed based on the information from the attached image sensor.

The suppression of the aberration of the hologram optical element caused by the fluctuation of the wavelength of the incident light utilizes the fact that the deflecting direction of the incident light passing through the diffraction grating differs depending on the wavelength, and the position measuring element (PSD, CCD, etc.) is used. The wavelength information is used to rewrite the pattern data and position data of the hologram optical element to be written in the real-time hologram element in the programmable optical element.

[0010]

1 is a conceptual diagram of a programmable optical element of the present invention. As shown in FIG. 1, the present invention comprises a real-time hologram element 1, a temperature detecting means 2, a storage means 3, a control targeting means 4, a rewriting means 5, an input / output control means 6, and an input / output terminal 7. If there is hologram optical element data in the storage means 3, the rewriting means 5 multiplies it by a constant (determined by the temperature data from the temperature detecting means 2) and writes it in the real-time hologram element 1, and from the control targeting means 4. If the data of the hologram optical element is input, it is multiplied by a constant and written.

The control targeting means 4 selects from the storage means 3 the data of the hologram optical element corresponding to the operation signal of the external control system inputted from the input / output terminal 7, and outputs it to the rewriting means 5. When the input / output control unit 6 is requested to input data to the storage unit 3 from the outside through the input / output terminal 7, the storage unit 3 is set to the storage mode, and a request acceptance signal is sent to the outside to send the data from the outside. The data is stored in a predetermined area of the storage means 3.

FIG. 2 is a block diagram showing an example of the programmable optical element of the present invention when it is program-controlled.
Depending on the type of real-time hologram element, the configuration M in the broken line in FIG. 2 has four configurations as follows.

1: FIG. 3 shows an example of a real-time hologram element which is electrically written and has no memorability, and comprises a real-time hologram element 10, a temperature detector 11, a drawing circuit 12 and a bit map memory 13 ( The same applies to magnetic writing). 2: FIG. 4 shows an example in which a real-time hologram element having a memory property is used for electrical writing, and includes a real-time hologram element 10, a temperature detector 11, and a drawing circuit 12 (the same applies to magnetic writing). 3: FIG. 5 shows an example in which a real-time hologram element having no memory property is used for optical writing.
0, temperature detector 11, drawing circuit 12, bitmap memory 13, light source 14, and light deflecting means 15. 4: FIG. 6 shows an example in which a real-time hologram element having a memory property is used for optical writing.
0, temperature detector 11, drawing circuit 12, light source 14, and light deflecting means 15.

7 and 8 are a perspective view and a cross-sectional view of a programmable optical element of the present invention when a matrix electrode-liquid crystal medium type real-time hologram element 31 is used as the real-time hologram element.

In both figures, 30 is an input / output connector,
31 is a matrix electrode-liquid crystal medium type real-time hologram element, 32 is a glass plate which is a component of the real-time hologram element, 33 is a thermistor, 34 is a frame 1, 35 is a frame 2, 36 is a PBW, and 37 is a drawing IC. , 38 is C
PU & memory, 39 is a flexible substrate.

There are various ways of expressing the pattern data depending on the type and thickness of the real-time hologram element (for example, for the method of creating a computer generated hologram, see Japanese Patent Laid-Open No. HEI 3).
-274586), and ray tracing for creating patterns (eg JNLatta RCFairchild: New Development in
the Design of Holographic Optics, SPIE, 39, 107/126
(1973), JNLatta: Horograms as Optical Element
s, SPIE, Enginneering Applicasions of Holography, 345
/ 359 (1972), JNLatta: Analysis of Multiple Holog
ram Optical Elements with Low Dispersion and Low A
verrations, Appl.Opt, 11-8, 1686/1696 (1972)) is required.

However, in order to explain only the essential points, an example will be described in which the hologram is limited to a binary hologram and is limited to one component (without ray tracing). FIG. 9 is a diagram showing the creation of a general hologram pattern. In this case, the hologram pattern is [O1P optical distance] − [O2P optical distance] = mλ: m is a set of P points satisfying an integer (Equation 1), and therefore the point (X,
It can be represented as a set of Y).

In FIG. 10, O1 = (0,0, -∞), O2 = (0,0,10) m
An example of pattern at m and λ = 780 nm is shown (m is every 20). Here, it is assumed that the hologram surface has moved / rotated (see N in FIG. 9). When the coordinate system is newly rewritten, it is
In that case, the positions of O1 and O2 viewed from the new coordinate system are O′1 and O′2, so the new pattern is [O′1P optical distance] − [O′2P optical distance] = m
λ: m is a set of points (X, Y) satisfying the integer. That is, when the hologram surface moves or rotates, a new pattern can be created by coordinate conversion.

From the above example, in order to condense the light emitted from the point O1 to the point O2, the conventional technique has fixed the pattern and aligned the hologram surface so that the hologram surface does not move and rotate. In the example, it can be seen that it is possible to change the pattern without moving and rotating the hologram surface.

For example, assume that there is an optical system (CCD camera or the like) shown in FIG. 12A (I is an image plane, O is an object plane, and L1 and L2 are lens surfaces). If this is due to manufacturing and assembly variations as shown in FIG. 12 (b), as shown in FIG. 12 (c), position (O1) is set to the optical axis of the image plane and the real-time hologram element plane. Intersection position (O '
1) and the position (02) to the intersection position (0'2) of the optical axis of the object surface and the real-time hologram element surface, and the pattern may be changed by using it as a new coordinate origin.

Next, the change of the pattern due to the thermal expansion of the real-time hologram element will be described with reference to FIG. Now, m of the pattern created when the temperature of the real-time hologram element is to
At one point (X, Y) on == i, the distance from the coordinate origin O is α at the coefficient of thermal expansion at the temperature to of the real-time hologram element, and at the temperature t,

√X ² + Y ² × {1 + α (t-to)} If you transform this,

[0023]

[Equation 1] Therefore, to cancel the thermal expansion, the pattern data is 1
It is understood that it is sufficient to multiply by / {1 + α (t-to)}.

The configuration of FIG. 2 which achieves the above basic principle will be described below. 14 and 15 show each data format. Pattern data format only,
Since the data amount differs for each hologram optical element, a header code indicating the beginning of data and an END code indicating the end of the pattern data group are included. The type / position data and the control target data have the same data amount for each hologram optical element, and thus are represented in the form of a table. Incidentally, Z of both formats is used for designating a plurality of real-time hologram elements which will be described later. It should be noted that the terms control object and operation amount are in accordance with the control object and operation amount in the general control system shown in FIG.

FIG. 17 is a flow chart under the program control of the rewriting means, and an embodiment of the rewriting means will be described according to the flow chart. First, the address is moved to the head of the type / position data area in the memory 40 as a storage unit, the part number is read, and the pattern data area is searched for a pattern data record having the same kind code as the part number.
Based on the X, Y, Z data of the type / position data, the pattern data 1 / {1 + α (t
-To)} Expand while multiplying.

This operation is repeated until the END code appears. The set of points (the pattern is a set of point data strings as described with reference to FIGS. 9 to 13) developed on the bitmap memory 41 is a voltage of matrix points of the real-time hologram element by dedicated drawing hardware. And changes in the transmittance and the refractive index of the liquid crystal medium at the position of the matrix point.

Subsequently, the CPU 4 as a control targeting means
If there is data input (type code and X, Y, Z) from 2, the pattern data is searched from the memory 40 based on the data input, the pattern at the corresponding position on the bit map memory 41 is erased, and new pattern data is created. expand.

FIG. 18 is a flow chart of the program control of the control targeting means, and an embodiment of the control targeting means will be described in accordance with this. First, it waits until an operation signal having the format shown in FIG. 19 is input. If there is a signal input, a control target data record having the same value is searched from the control target data area in the memory 40 based on the operation part number and the operation amount of the signal input, and the part number and X, Y, Z are searched.
Is output to the CPU 42 as a rewriting means.

The controlled object can be arbitrarily set by the user. For example, when it is desired to eliminate the occurrence of aberration due to wavelength variation in one hologram lens (this operation part number is 1), wavelength variation is detected by adding wavelength detecting means to the optical system as shown in FIG.

The laser monitor light 95 is deflected by the diffraction grating 94 and its position is detected by the PSD 92. In this case, SIN θ = λo / P and S = dtan (δ
λ / P / COSθ). Since the wavelength variation of the semiconductor laser 93 is λo ± δλ, it is assumed that δλ is divided into m, and the pattern data is substituted into λ of (Equation 1) by the values from λo−δλ to λo + δλ in increments of δλ / m, and m + 1 patterns are obtained. Ask for data.

As shown in FIG. 21, it is possible to suppress the occurrence of aberration by forming control target data corresponding to the manipulated variable and inputting it to the memory 40 (here, the manipulated variable and the operation part number). Is a function that returns the part number and position data. The number of divisions needs to be infinite in order to completely suppress the occurrence of aberrations, but generally it is not necessary to make the aberrations 0, and it is sufficient to set it to a certain value (for example, Marechal's wavefront aberration reference) or less. The number is determined by the value of aberration required.

In the case of program control, the CPU 42 as an input / output control means has a DMA (Direct M
The description is omitted because it is achieved by the emory access function. A programmable optical element is realized by the above configuration and operation.

FIG. 22 is a conceptual diagram of a software development support device for a programmable optical element according to the present invention. Input means 5
0 is a commercially available CAD for optical design (for example, OR
It has a function of receiving optical system data of CODE-V manufactured by Company A) via communication or media (magnetic tape, floppy disk, etc.) and converting the data. Since the format of optical system data is different for each CAD software in data conversion, this is converted into the data format inside the apparatus.

The input / output terminal 52 is the image pickup element 114 in the optical system (FIG. 23) 115 constructed by a programmable optical element, or the absence of the image pickup element 114 (see FIG. 24).
An image pickup device 114 externally attached by the user is connected, and information for calculating the position change and tilt of the above-mentioned real-time hologram device is input, and data of the created hologram optical device is output. Is. Incidentally, 111 is a software development support device, 112 is a programmable optical element, and 113 is a laser light source.

FIG. 25 shows an example of the software development support device according to the present invention, which is a calculation means 51 under program control.
Is a flow chart of the embodiment of the calculation means 51 will be described. Optical system data and input / output terminal 5
2, the position and the inclination of the real-time hologram element, the light source, and the light receiving element are calculated based on the information, and a new hologram optical element pattern is calculated based on the principle described in FIGS.
Type / position data and control target data (the creation method is described above) are created and input to the programmable optical element.

FIG. 26 shows a general two-dimensional simplified model of an optical system using a programmable optical element composed of a plurality of real-time hologram optical elements (1 to m in FIG. 26) described later. Unlike the system data (see FIG. 27), due to assembly variations and manufacturing variations, as shown by O in FIG. 26, the position (xi, yi) of the origin of the coordinate system of each optical element with respect to the coordinate system of the image sensor. And the angles θ i i = 1,2, .., m + 1 are disjoint. This position and inclination are calculated by the following flow.

1: A deflection hologram optical element is placed on the entire surface of the real-time hologram element other than the first real-time hologram element, each deflection angle is appropriately adjusted, and one light beam from the light emitting element to the image pickup element is tried and error-triggered. Is calculated (see FIG. 28). 2: The deflection hologram element is placed on the entire surface of the first real-time hologram element while maintaining the state of the first and subsequent real-time hologram elements, and the output Yoi of the image pickup element corresponding thereto is obtained at the deflection angle δi (FIG. 29). reference). 3: Position of the coordinate of the first real-time hologram element (z1,
y1), the angle θ1 and the incident position of the ray obtained in item 1 (0, Y1)
And five angles of incidence angle ψ1, Yoi = y1 + Y1Cosθ1- (z
1 + Y1Sinθ1) Tan (ψ1 + δi-θ1) holds, so item 2
If the processing of 3 is performed three times, three variables (z1, y1, θ
The value of 1) is determined. 4: For the second real-time hologram element, item 1
The unknown number is determined by performing the same operation as the process of. 5: If this operation is repeated up to the (m + 1) th optical element,
The position and angle of all coordinate systems can be obtained. Although the above description has been made in two dimensions, it goes without saying that it can be expanded in three dimensions.

FIGS. 30 to 32 show the configuration of another embodiment of a programmable optical element having a plurality of real-time hologram elements. For example, in order to form the laser beam position control device according to the prior art of FIG. 33, the configuration of the programmable optical element of FIG. 30 (three hologram optical elements corresponding to the collimating lens 105, the liquid crystal light valve 106, and the lens 107 of FIG. 33) is used. One real-time hologram element 142, 143, and 144 may be used, but a mirror 146 is added in FIG. 31 (one transmission-type real-time hologram element 145 is a collimating lens, a liquid crystal light valve, and hologram optics corresponding to a lens). Elements 148, 14
9, 150) or a reflective real-time hologram element 147 (a transmissive real-time hologram element having a reflective film formed on one surface thereof or an originally reflective DMD (Deformab).
le Mirror Device) or a CCD writing element, etc.) (a collimating lens, a liquid crystal light valve, and hologram optical elements 148, 149, and 150 corresponding to the lens are formed on one reflective real-time hologram element) Is excellent in cost and space. This is possible because one real-time hologram element is provided with a function of expanding a plurality of hologram optical elements.

As described above, if the user stores each means of the present invention in the inviolable area and allows the user to use other memory space, the user can program the control system for the optical system of the present invention. Although the embodiment has been described by the program control from the viewpoint that it can be formed inside the optical element and is more advantageous in terms of cost and space, it is naturally possible to configure it by a wired logic.

[0040]

EFFECTS OF THE INVENTION According to the programmable optical element of the present invention, since it is possible to store the data of any one of the hologram optical elements, the versatility is enhanced and it is not necessary to manufacture the optical element. 2: Since a plurality of hologram optical elements can be written in one real-time hologram element, it becomes easy to form a complicated optical system. It can also be downsized. 3: Since the aberration generated by the thermal expansion of the real-time hologram element can be eliminated, for example, a transparent plastic material which cannot be used for the real-time hologram element in the related art can be used. 4: By using the software development support device of the present invention,
The alignment required for conventional optical elements is no longer necessary. Further, since the position dependency of the aberration, which is a drawback of the hologram optical element, can be eliminated, it is possible to use, for example, a high NA hologram lens which could not be mass-produced conventionally because of that. 5: The hologram optical element written in the real-time hologram element of the programmable optical element can be an object to be controlled by the object to be controlled, and the application range is further expanded (for example, autofocus). Also, by detecting the wavelength and using it as the manipulated variable, it is possible to eliminate the wavelength dependence of the aberration, which was a drawback of the hologram optical element. Therefore, it is possible to use a high NA hologram lens or the like that could not be mass-produced conventionally. It will be possible.

As described above, the programmable optical element and its software development support system of the present invention can replace the conventional optical system with hardware with software and eliminate the need for alignment.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a programmable optical element of the present invention.

FIG. 2 is a configuration diagram of a programmable optical element according to an embodiment of the present invention, which is program-controlled.

FIG. 3 is a configuration diagram of a hologram element of an example.

FIG. 4 is a configuration diagram of a hologram element of an example.

FIG. 5 is a configuration diagram of a hologram element of an example.

FIG. 6 is a configuration diagram of a hologram element of an example.

FIG. 7 is a perspective view when a matrix electrode-liquid crystal medium type real-time hologram element which is an example of the programmable optical element of the present invention is used.

8 is a cross-sectional view taken along the line AA ′ of FIG.

FIG. 9 is an explanatory diagram showing a method of creating pattern data of the hologram optical element of the embodiment.

FIG. 10 is an explanatory diagram showing a method of creating pattern data of the hologram optical element of the embodiment.

FIG. 11 is an explanatory diagram showing a method of creating pattern data of the hologram optical element of the embodiment.

FIG. 12 is an explanatory diagram showing a method of creating pattern data of the hologram optical element of the embodiment.

FIG. 13 is an explanatory diagram showing a method of creating pattern data of the hologram optical element of the embodiment.

FIG. 14 is an explanatory view showing a data format example of each data of the embodiment.

FIG. 15 is an explanatory diagram showing a data format example of each data of the embodiment.

FIG. 16 is a block configuration diagram of a general control system according to the embodiment.

FIG. 17 is a flowchart of rewriting control means when the programmable optical element of the embodiment is program-controlled.

FIG. 18 is a flowchart of control targeting means when the programmable optical element of the embodiment is program-controlled.

FIG. 19 is an explanatory diagram showing a format example of an operation signal according to the embodiment.

FIG. 20 is an explanatory diagram showing the operation of the control targeting means of the present invention.

FIG. 21 is a chart showing control target data of the example.

FIG. 22 is a conceptual diagram of a software development support device of the present invention.

FIG. 23 is a block diagram showing the connection between the programmable optical element of the present invention and the software development support device.

FIG. 24 is a block diagram showing the connection between the programmable optical element of the present invention and the software development support device.

FIG. 25 is a flowchart of the calculation means of the software development support device according to the present invention.

FIG. 26 is an explanatory view showing the calculation flow of the position and inclination of each optical element of the calculation means of the present invention.

FIG. 27 is an explanatory diagram showing a calculation flow of the position and inclination of each optical element of the calculation means of the present invention.

FIG. 28 is an explanatory diagram showing a calculation flow of the position and inclination of each optical element of the calculation means of the present invention.

FIG. 29 is an explanatory diagram showing a calculation flow of the position and inclination of each optical element of the calculation means of the present invention.

FIG. 30 is a block diagram of a programmable optical element of the present invention having a plurality of real-time hologram elements.

FIG. 31 is a block diagram showing a programmable optical element of the present invention having a plurality of real-time hologram elements.

FIG. 32 is a block diagram showing a programmable optical element of the present invention having a plurality of real-time hologram elements.

FIG. 33 is a configuration diagram of a laser beam position control device according to a conventional technique.

[Explanation of symbols]

30 input / output connector 31 matrix electrode-liquid crystal medium type real-time hologram element 32 glass plate which is an upper component of 33 33 thermistor 34 frame 1 35 frame 2 36 PWB 37 drawing IC 38 CPU & memory 39 flexible board 92 position detection element ( PSD etc.) 94 Diffraction grating 95 Monitor laser light 111 Software development support device 112 Programmable optical element 93, 91, 115 Optical system constructed by programmable optical element 113, 141 Laser light source 142, 143, 144, 145 Transmission type real-time hologram Element 146 Mirror 147 Reflective real-time hologram element

Claims (7)

[Claims] 1. A real-time hologram element, temperature detecting means,
An input / output control unit configured to include a storage unit, a control unit, and an input / output terminal, and store pattern data, position data, and control target data of an arbitrary hologram optical element in the storage unit through the input / output terminal; Rewriting control means for writing the hologram optical element in the real-time hologram element based on the pattern data, the position data, and the temperature data from the temperature detection means input to the storage means, and an operation signal input to the input / output terminal. According to the above, the programmable optical element comprising a control targeting means for controlling the function or position of any of the hologram optical elements by the user. 2. The programmable optical element according to claim 1, wherein a plurality of transmissive real-time hologram elements, reflective real-time hologram elements, and mirrors are arranged. 3. When the linear expansion coefficient of the real-time hologram element at temperature to is α and the temperature data from the temperature detecting means attached to the real-time hologram element is t, the temperature to of the real-time hologram element is at to. Characteristic that the generated pattern data of the hologram optical element is multiplied by 1 / {1 + α (t-to)} and written in the real-time hologram element to eliminate the aberration generated by the thermal expansion of the real-time hologram element. Method for writing hologram optical element. 4. Assembling and manufacturing variations between optical elements by creating pattern data and position data of the hologram optical element based on the position information of the real-time hologram element and other optical elements, light emitting elements, and light receiving elements. A method for writing a hologram optical element to a real-time hologram element, which is characterized by eliminating the aberration generated by the. 5. Aberration caused by wavelength fluctuation of light incident on the hologram optical element by detecting the wavelength of light incident on the real-time hologram element and creating pattern data of the hologram optical element based on the wavelength. A method for writing a hologram optical element to a real-time hologram element, which is characterized by eliminating the above. 6. A writing method according to any one of claims 3 to 6.
The programmable optical element according to claim 1, wherein the above is applied. 7. An input means capable of inputting and outputting CAD data,
An external image pickup device for detecting the position and inclination information of the real-time hologram device, an input / output terminal for connection with the image pickup device in the optical system to be constructed, the CAD data and the optical information in the system based on the information from the image pickup device. A software development support device for a programmable optical element, comprising: a calculation means for calculating the position and inclination of the element, and thereby creating pattern data, position data, and control target data of the hologram optical element.