JPS63261339A - Transparent screen - Google Patents
Transparent screenInfo
- Publication number
- JPS63261339A JPS63261339A JP62096439A JP9643987A JPS63261339A JP S63261339 A JPS63261339 A JP S63261339A JP 62096439 A JP62096439 A JP 62096439A JP 9643987 A JP9643987 A JP 9643987A JP S63261339 A JPS63261339 A JP S63261339A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- vinyl chloride
- methyl methacrylate
- lens
- medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 21
- 229920000642 polymer Polymers 0.000 claims description 16
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 description 13
- 239000004925 Acrylic resin Substances 0.000 description 10
- 229920000178 Acrylic resin Polymers 0.000 description 10
- 229920001577 copolymer Polymers 0.000 description 7
- 239000000178 monomer Substances 0.000 description 6
- 229920001519 homopolymer Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000011342 resin composition Substances 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 241000219122 Cucurbita Species 0.000 description 1
- 235000009852 Cucurbita pepo Nutrition 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229940096992 potassium oleate Drugs 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- MLICVSDCCDDWMD-KVVVOXFISA-M potassium;(z)-octadec-9-enoate Chemical compound [K+].CCCCCCCC\C=C/CCCCCCCC([O-])=O MLICVSDCCDDWMD-KVVVOXFISA-M 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、グロジエクションテレビのスクリーン等に用
いられる透過型スクリーンに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a transmissive screen used for a glogeation television screen or the like.
（従来の技術）
上記の用途に用いられる透過型スクリーンとしては、各
種の合成樹脂材料を成形して製作することが提案されて
いるが、一般に次のような性能が要求される。(Prior Art) It has been proposed to manufacture a transmission screen used for the above-mentioned purposes by molding various synthetic resin materials, but the following performance is generally required.
■ 媒体の透明性が高く、光線透過率が高いこと、
■ レンズ面の形成等成形性が良いこと、■ 耐候性が
良いこと、
■ 一定の耐熱性があること、
■ 印刷、塗装に耐え、一定の耐薬品性を有すること
が挙げられ、このような性能を総合的に勘案して実用的
にはアクリル樹脂が用いられている。■ High transparency of the medium and high light transmittance, ■ Good moldability such as forming lens surfaces, ■ Good weather resistance, ■ A certain level of heat resistance, ■ Resistant to printing and painting, One example of this is that it has a certain level of chemical resistance, and acrylic resin is practically used in consideration of such performance.
ところで、上記の如き成形材料の一種として塩化ビニル
樹脂がよく知られているところであり、とりわけ成形性
が優れているが、光学特性や耐候性の点ではアクリル樹
脂に及ばない面がある。By the way, vinyl chloride resin is well known as a type of molding material as described above, and although it has particularly excellent moldability, it is not as good as acrylic resin in terms of optical properties and weather resistance.
（発明が解決しようとする問題点）
本発明は、このような塩化ビニル樹脂の特徴に着目しつ
＼、同時に上記アクリル樹脂の特性を生した合成樹脂材
料について検討した結果完成したもので、適切な材料を
用いて優れた透過型スクリーンを提供しようとするもの
である。(Problems to be Solved by the Invention) The present invention was completed as a result of focusing on the characteristics of vinyl chloride resin and at the same time studying synthetic resin materials that have the characteristics of acrylic resin. The purpose of this project is to provide an excellent transmission screen using suitable materials.
（問題点を解決するための手段）
すなわち本発明の要旨とするところは、光源からめ光を
入射する入射面と、この対面をなす観察面とを備えたス
クリーンであって、これらの面のいずれか一方にレンズ
群が形成されており、しかも少なくとも上記レンズ群が
形成されている部分の媒体が、塩化ビニル成分７０重量
％以上から構成される塩化ビニル系重合体間４０〜９５
重量部と、メタクリル酸メチルが７５重重量板上から構
成され、かつその還元粘度が０．００５〜［１２１７ｆ
であるメタクリル酸メチル系重合体（Ｂ１６０〜５重景
部とからなることを特徴とする透過型スクリーンにある
。(Means for Solving the Problems) That is, the gist of the present invention is to provide a screen comprising an entrance surface through which light from a light source is incident, and an observation surface facing the entrance surface, which A lens group is formed on one side, and at least the medium in the portion where the lens group is formed is a vinyl chloride polymer composed of 70% by weight or more of vinyl chloride component.
parts by weight and methyl methacrylate on a 75-weight plate, and its reduced viscosity is 0.005 to [1217f
There is a transmission screen characterized by comprising a methyl methacrylate polymer (B160-5 double image area).
（実施例） 以下、本発明を実施例の図面に従って説明する。(Example) The present invention will be described below with reference to drawings of embodiments.
第１図ないし第３図は本発明における媒体単独で構成し
た透過型スクリーンの例を示しており、第４図および第
５図は他の基材と併用した構成の例を示している。1 to 3 show an example of a transmission type screen constructed from only a medium according to the present invention, and FIGS. 4 and 5 show an example of a structure in which the screen is used in combination with another base material.
第１図は１枚構成の媒体（１）の入射面間にフレネルレ
ンズ（１１）を、また観察面■）にレンチキュラーレン
ズ（１２）をそれぞれ設けた例を示している。また第２
図は２枚構成で、本発明の媒体（１）の観察面ＣＢｌ側
に、その観察面０３１にレンチキュラーレンズ（２１）
を有する他の基材（２）を配置した例である。さらに第
３図は本発明の媒体（１）の入射面（６）側にレンチキ
ュラーレンズ（１５）を、また観察面０３＋にレンチキ
ュラー状レンズ（１４）と外光吸収部（１５）とを形成
し、この入射面（４）側にフレネルレンズ（２２）を有
する他の基材（２）を配置した例である。FIG. 1 shows an example in which a Fresnel lens (11) is provided between the incident surfaces of a single medium (1), and a lenticular lens (12) is provided on the observation surface (2). Also the second
The figure shows a two-lens configuration, with a lenticular lens (21) on the observation surface 031 of the medium (1) of the present invention on the observation surface CBl side.
This is an example in which another base material (2) having . Furthermore, FIG. 3 shows that a lenticular lens (15) is formed on the incident surface (6) side of the medium (1) of the present invention, and a lenticular lens (14) and an external light absorbing section (15) are formed on the observation surface 03+. This is an example in which another base material (2) having a Fresnel lens (22) is arranged on the side of the entrance surface (4).
なおこの例における媒体（１）のレンチキュラー状レン
ズ（１４）は、同媒体（１）のレンチキ −ユラーレン
ズ（１３）の集光部に形成されており、外光吸収部（１
５）は非集光部に形成されている。In this example, the lenticular lens (14) of the medium (1) is formed at the light condensing part of the lenticular lens (13) of the medium (1), and the external light absorbing part (1)
5) is formed in the non-light condensing part.
まだ第４図は他の基材（２）の両面に本発明の媒体（１
）を設け、この媒体（１）によって形成される入射面（
４）Ｋはフレネルレンズ（１１）を、また同じく観察面
の）にはし／テキュラーレンズ（１２）をそれぞれ形成
した例であり、第５図は他の基材（２）の観察面の）に
媒体（１ンを設け・、ここにフレネルレンズ（１１）を
形成した例である。Figure 4 shows that the medium (1) of the present invention is coated on both sides of another base material (2).
) is provided, and the entrance surface (
4) K is an example in which a Fresnel lens (11) is formed on the observation surface, and a tooth/ticular lens (12) is formed on the observation surface of the other base material (2). ) is provided with a medium (1), and a Fresnel lens (11) is formed therein.
本発明におけるレンズ群を形成する媒体（１）としては
、上述した如く、塩化ビニル成分７０重ｉチ以上から構
成される塩化ビニル系重合体（Ａ１４０〜９５重量部と
、メタクリル酸メチルが７５重量％以上から構成され、
かつその還元粘度がＣＬＯＯ５〜［１１２１７９である
メタクリル酸メチル系重合体（Ｂ）６０〜５重量部とか
らなる塩化ビニル系樹脂を用いる。As mentioned above, the medium (1) forming the lens group in the present invention is a vinyl chloride polymer composed of 70 parts by weight or more of vinyl chloride components (A140 to 95 parts by weight and 75 parts by weight of methyl methacrylate). Consisting of % or more,
A vinyl chloride resin comprising 60 to 5 parts by weight of a methyl methacrylate polymer (B) having a reduced viscosity of CLOO5 to [112179] is used.
透過型スクリーンの材料としては、一般的にアクリル樹
脂が用いられているが、■高温での流動性が高くなく成
形しにくい面がある、＠金型との粘着性が強く離型しに
くい、θ目的によっては屈折率かや＼低いことがある、
■媒体を薄いシートにしたときの耐衝隼性が低い、０本
質的には難燃性ではない等の問題点を含んでいる。これ
に対し塩化ビニル樹脂は、上記■〜ｅがアクリル樹脂よ
り優れているが、光学特性、耐候性あるいは耐熱性の点
では劣っている。Acrylic resin is generally used as a material for transparent screens; however, ■It has poor fluidity at high temperatures and is difficult to mold, and has strong adhesion to the mold, making it difficult to release. θ Depending on the purpose, the refractive index may be slightly lower.
(2) It has problems such as low impact resistance when the medium is made into a thin sheet, and it is not essentially flame retardant. On the other hand, vinyl chloride resins are superior to acrylic resins in the above items (1) to (e), but are inferior in terms of optical properties, weather resistance, and heat resistance.
そこで本発明においては、アクリル樹脂の長所と塩化ビ
ニル樹脂の長所とを併せ具有する旧脂材料を用いること
により、こｎらの問題点を解消すぺく、上記組成の塩化
ビニル系樹脂を媒体（１）として使用するものである。Therefore, in the present invention, in order to solve these problems by using an old resin material that has both the advantages of acrylic resin and the advantages of vinyl chloride resin, the vinyl chloride resin of the above composition is used as a medium ( It is used as 1).
この組成において塩化ビニル系重合体は少なくとも７０
重量％が塩化ビニルから構成されるもので塩化ビニル単
独重合体、または５０重量％まで他の共重合性単量体と
共重合した塩化ビニル共重合体であり、これら単独重合
体および共重合体は単独で、または混合して用いること
ができる。In this composition, the vinyl chloride polymer contains at least 70%
A vinyl chloride homopolymer consisting of vinyl chloride in % by weight, or a vinyl chloride copolymer copolymerized with up to 50% by weight of other copolymerizable monomers, and these homopolymers and copolymers can be used alone or in combination.
共重合性単量体としては酢酸ビニル、エチレン。Copolymerizable monomers include vinyl acetate and ethylene.
プロピレンなどが用いられるが、その共重合体中の構成
含量は５０重量％までであり、５０重を係を超える場合
には本発明の目的である耐熱変形性の付与が困難となる
ので好ましくない。Propylene or the like is used, but its constituent content in the copolymer is up to 50% by weight, and if it exceeds 50% by weight, it is not preferable because it becomes difficult to impart heat deformation resistance, which is the objective of the present invention. .
次に本発明におけるメタクリル酸メチル系重合体は７５
重量％以上がメタクリル酸メチルから構成されるもので
メタクリル酸メチル単独重合体、または２５重量％まで
他の共重合性単量体と共重合したメタクリル酸メチル共
重合体であり、これら単独重合体および共重合体は単独
で、または混合して用いることができる。一方このメタ
クリル酸メチル系重合体はその１ｆを１ｔのクロロホル
ムに溶解した溶液を２５℃にて測定した還元粘度がα０
０５〜ａ ２１／ｆ 、好ましくはａ、０５〜［１０６
ｔ／ｙの範囲であることが必要であり、還元粘度がＱ、
００５未満のものでは本発明の目的である耐熱変形性の
付与が困難となるので好ましくない。また還元粘度が［
Ｌ２を超えるものでは得られる樹脂組成物を成形する際
の負荷が大になり、加工性が低下するため好ましくない
。Next, the methyl methacrylate polymer in the present invention is 75
Methyl methacrylate homopolymer composed of methyl methacrylate or more by weight %, or methyl methacrylate copolymer copolymerized with other copolymerizable monomers up to 25% by weight, these homopolymers and copolymers can be used alone or in combination. On the other hand, this methyl methacrylate polymer has a reduced viscosity of α0 when a solution of 1f dissolved in 1 t of chloroform is measured at 25°C.
05~a21/f, preferably a, 05~[106
It is necessary that the reduced viscosity is within the range of t/y, and the reduced viscosity is Q,
If it is less than 005, it will be difficult to impart heat deformation resistance, which is the objective of the present invention, so it is not preferable. Also, the reduced viscosity [
If it exceeds L2, the load when molding the resulting resin composition becomes large and processability deteriorates, which is not preferable.
メタクリル酸メチル共重合体の共重合性単量体としては
炭素数が１〜８のアルキル基を有するアクリル酸アルキ
ルエステル、スチレン、α−メチルスチレン、アクリロ
ニトリルなどを使用することができ、エチルアクリレー
ト、ブチルアクリレートなどが好ましいものである。共
重合体中の共重合性単量体の構成含量は２５重量％まで
であり、２５重量憾を超える場合には耐熱変形性の付与
が困難となるので好ましくない。共重合性単量体の構成
含量は１０重量％以下が好ましいものである。As the copolymerizable monomer of the methyl methacrylate copolymer, acrylic acid alkyl ester having an alkyl group having 1 to 8 carbon atoms, styrene, α-methylstyrene, acrylonitrile, etc. can be used, and ethyl acrylate, Butyl acrylate and the like are preferred. The constituent content of the copolymerizable monomer in the copolymer is up to 25% by weight, and if it exceeds 25% by weight, it becomes difficult to impart heat deformation resistance, which is not preferred. The content of the copolymerizable monomer is preferably 10% by weight or less.
本発明の塩化ビニル系樹脂組成物は上記塩化ビニル系重
合体の少なくとも一種を４０〜９５重量部、上記メタク
リル酸メチル系重合体の少なくとも一種を６０〜５重景
部それぞれ配合して成るものであり、メタクリル酸メチ
ル系重合体の配合量が５重量部未満では耐熱変形性付与
の効果が充分でなく、また６０重量部を超える場合には
Ｍｆｆｉ性、耐薬品性など塩化ビニル系重合体が本来有
する特徴が損なわれてしまうため好ましくない。The vinyl chloride resin composition of the present invention contains 40 to 95 parts by weight of at least one of the vinyl chloride polymers and 60 to 5 parts by weight of at least one of the methyl methacrylate polymers. If the amount of the methyl methacrylate polymer is less than 5 parts by weight, the effect of imparting heat deformation resistance will not be sufficient, and if it exceeds 60 parts by weight, the vinyl chloride polymer will have poor Mffi properties and chemical resistance. This is not preferable because the original characteristics are lost.
なお本発明の塩化ビニル系樹脂組成物には必要に応じて
熱安定剤、光安定剤、滑剤、充填剤などを添加すること
ができる。Note that a heat stabilizer, a light stabilizer, a lubricant, a filler, etc. can be added to the vinyl chloride resin composition of the present invention, if necessary.
上記図示した例において用いる他の基材（２）・は、ア
クリル樹脂を用いるのが一般的であるが、第４図および
第５図の場合は、予め基材（２）の表面に媒体（１）の
薄層を形成しておき、のちにレンズ群形成のための成形
をしてもよいし、レンズ群の形成の際に両者を積層一体
化してもよい。The other base material (2) used in the examples illustrated above is generally made of acrylic resin, but in the case of FIGS. 4 and 5, the surface of the base material (2) is The thin layer of 1) may be formed in advance and then molded to form a lens group, or the two may be laminated and integrated when forming a lens group.
これらの媒体（１）あるいは他の基材（２）には光拡散
性をさらに付与するために、８１０．。810. to further impart light diffusing properties to these media (1) or other substrates (2). .
Ｃａ０Ｏ，、ム＃（ＯＨ）、 、 ＢａＳＯ４、ＡＩ、
Ｏ，等の無機顔料やその他の有機系領科を適宜浪人させ
ることができる。Ca0O,, Mu#(OH), , BaSO4, AI,
Inorganic pigments such as O, etc. and other organic pigments can be added as appropriate.
（具体例） 以下さらに本発明の具体例について説明する。(Concrete example) Specific examples of the present invention will be further described below.
まず攪拌機付反応容器に、蒸留水２５０部。First, add 250 parts of distilled water to a reaction vessel equipped with a stirrer.
オレイン酸カリウム１．０部、過硫酸カリウムα５部お
よびメタクリル酸メチル１００部ならびにｔ−ドデシル
メルカプタン１．０部をそれぞれ投入し、６０℃で５時
間重合させた。反応完了後得られたラテックスを凝固、
洗浄、乾燥してメタクリル酸メチル重合体を得た。得ら
れた重合体の還元粘度はα０４であった。1.0 part of potassium oleate, 5 parts of potassium persulfate α, 100 parts of methyl methacrylate, and 1.0 part of t-dodecylmercaptan were each added, and polymerization was carried out at 60° C. for 5 hours. After the reaction is completed, the obtained latex is coagulated,
After washing and drying, a methyl methacrylate polymer was obtained. The reduced viscosity of the obtained polymer was α04.
以上のようにして得られたメタクリル酸メチル重合体５
０部、ポリ塩化ビニル（平均重合度８００）７０部、加
工助剤として三菱レイヨン社製「メタブレンＰ５５１Ｊ
１部を混合し、これをカレンダー法によりシーテイン
グし、厚さ０．５瓢の塩化ビニル系樹脂シートを得た。Methyl methacrylate polymer 5 obtained as above
0 parts, 70 parts of polyvinyl chloride (average degree of polymerization 800), "Metablen P551J" manufactured by Mitsubishi Rayon Co., Ltd. as a processing aid.
One part of the mixture was mixed and sheeted by a calendering method to obtain a vinyl chloride resin sheet with a thickness of 0.5 gourd.
次にこのシートを２枚重ね、ピッチがａＳ。Next, stack two of these sheets so that the pitch is aS.
で焦点圧ｎｔ ＝ｔ １．、のサーキエラーフレネルレ
ンズ面を有する型分用いて、温度１７０℃。The focal pressure nt = t1. , using a model with a circuit error Fresnel lens surface, at a temperature of 170°C.
圧力’ Ｏｋｌｉ’／ｍ”で熱プレスしたところ、良好
なフレネルレンズが得られた。このとき同じ条件で厚さ
１ｆｉのアクリル樹脂板を熱プレスしたが、外観、離型
性の点で本発明品が優れていた。A good Fresnel lens was obtained by hot pressing at a pressure of 'Okli'/m'.At this time, an acrylic resin plate with a thickness of 1fi was hot pressed under the same conditions, but the present invention was superior in terms of appearance and mold releasability. The quality was excellent.
さらに上記で得られた厚さ１咽のフレネルレンズシート
を、厚さ５ｆｉでしかも基材中に９１０２を添加したア
クリル樹脂製のレンチキュラーレンズシートとを第２図
の積層してプロジェクションテレビに取付けて使用した
ところ、２００時間点灯した後においても変形や変色等
の異状を認められなかった。Furthermore, the Fresnel lens sheet with a thickness of 1 mm obtained above was laminated with a 5-fi thick lenticular lens sheet made of acrylic resin with 9102 added to the base material as shown in Fig. 2, and was attached to a projection TV. When used, no abnormalities such as deformation or discoloration were observed even after 200 hours of lighting.
（発明の効果）
本発明は以上詳述した如き構成からなるものであるから
、成形性に優れていて所期のレンズ形状が容易に得られ
ると共に、耐熱性、耐候性および光学特性に同等遜色が
なく、シかもその屈折率の値をアクリル樹脂の値と巧み
に組合せて利用できる等特有の効果を奏する利点がある
。(Effects of the Invention) Since the present invention has the structure as detailed above, it has excellent moldability and can easily obtain the desired lens shape, and has comparable heat resistance, weather resistance, and optical properties. It has the advantage of producing unique effects, such as being able to skillfully combine its refractive index value with that of the acrylic resin.
第１図ないし第５図は、それぞれ本発明の実施例を示す
断面図である。
（１）・・・・・媒体
（１１）・拳・・φ フレネルレンズ
（１２）・１・・ レンチキュラーレンズ秦１図
１
尾４ 凹
し２７ 尾３図
尾５ 図1 to 5 are cross-sectional views showing embodiments of the present invention, respectively. (1)・・・Medium (11)・Fist・φ Fresnel lens (12)・1・・Lenticular lens Hata 1 diagram
1 Tail 4 Concave 27 Tail 3 Figure Tail 5 Figure
Claims (1)
観察面とを備えたスクリーンであつて、これらの面のい
ずれか一方にレンズ群が形成されており、しかも少なく
とも上記レンズ群が形成されている部分の媒体が、塩化
ビニル成分７０重量％以上から構成される塩化ビニル系
重合体（Ａ）４０〜９５重量部と、メタクリル酸メチル
が７５重量％以上から構成され、かつその還元粘度が０
．００５〜０．２ｌ／ｇであるメタクリル酸メチル系重
合体（Ｂ）６０〜５重量部とからなる塩化ビニル系樹脂
からなることを特徴とする透過型スクリーン。 ２、レンズ群としてレンチキュラーレンズを形成したこ
とを特徴とする特許請求の範囲第１項記載の透過型スク
リーン。 ３、レンズ群としてフレネルレンズを形成したことを特
徴とする特許請求の範囲第１項記載の透過型スクリーン
。 ４、媒体に光拡散剤を混入したことを特徴とする特許請
求の範囲第１項、第２項または第３項記載の透過型スク
リーン。[Scope of Claims] 1. A screen comprising an entrance surface into which light from a light source enters and an observation surface facing this, wherein a lens group is formed on one of these surfaces, Moreover, at least the medium in the portion where the lens group is formed is made of 40 to 95 parts by weight of a vinyl chloride polymer (A) composed of 70% by weight or more of vinyl chloride components, and 75% by weight or more of methyl methacrylate. and its reduced viscosity is 0.
．． A transmission screen characterized in that it is made of a vinyl chloride resin comprising 60 to 5 parts by weight of a methyl methacrylate polymer (B) having an amount of 0.005 to 0.2 l/g. 2. The transmission screen according to claim 1, characterized in that a lenticular lens is formed as the lens group. 3. The transmission screen according to claim 1, characterized in that a Fresnel lens is formed as the lens group. 4. A transmission screen according to claim 1, 2 or 3, characterized in that a light diffusing agent is mixed into the medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62096439A JPS63261339A (en) | 1987-04-20 | 1987-04-20 | Transparent screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62096439A JPS63261339A (en) | 1987-04-20 | 1987-04-20 | Transparent screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63261339A true JPS63261339A (en) | 1988-10-28 |
Family
ID=14165048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62096439A Pending JPS63261339A (en) | 1987-04-20 | 1987-04-20 | Transparent screen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63261339A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1542071A2 (en) | 1995-03-16 | 2005-06-15 | Kuraray Co., Ltd. | Rear projection image display device |
-
1987
- 1987-04-20 JP JP62096439A patent/JPS63261339A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1542071A2 (en) | 1995-03-16 | 2005-06-15 | Kuraray Co., Ltd. | Rear projection image display device |
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