Film-like light shielding plate and stop, light amount adjusting stop device or shutter using the film-like light shielding plate

A thin-film, light-shielding plate technology, applied in the direction of aperture, shutter, optics, etc., can solve the problem of not being able to obtain light-shielding properties, and achieve the effect of light weight and excellent adhesion

Inactive Publication Date: 2011-05-18
SUMITOMO METAL MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, film-shaped shades using resin film substrates that are advantageous in terms of light weight cannot achieve complete light-shielding properties even when the plate thickness is 38 μm or less.

Method used

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  • Film-like light shielding plate and stop, light amount adjusting stop device or shutter using the film-like light shielding plate
  • Film-like light shielding plate and stop, light amount adjusting stop device or shutter using the film-like light shielding plate
  • Film-like light shielding plate and stop, light amount adjusting stop device or shutter using the film-like light shielding plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5， comparative example 1～3

[0133] Using a polyimide (PI) film with a film surface roughness (Ra) of 0.05 μm and a thickness of 25 μm, a film with a predetermined film thickness is formed on a non-heated substrate through the aforementioned film formation procedure. Titanium oxide carbide films with the same film thickness and the same composition were formed on both sides of the film by the same manufacturing method. The temperature of the substrate surface at the time of film formation was measured with a thermal label (manufactured by NOF Giken Kogyo Co., Ltd.) attached to the film substrate and a reflection thermometer. The substrate surface temperature during film formation was all 80 to 85°C.

[0134] Table 1 shows the results of forming a titanium oxide film on a polyimide (PI) film substrate to produce a film-shaped light-shielding plate. In the table, the composition of the sintered target body used for the production of the film and the film forming conditions, the composition of the obtained ...

Embodiment 6， comparative example 4

[0145] In addition to changing the total film thickness of the titanium carbide oxide film formed on the surface of the film to 360nm (180nm on each side) (Example 6) and to 240nm (120nm on each side) (Comparative Example 4), the same process as in Example 1 was carried out. The same method is used to manufacture film-shaped visors. The results are shown in Table 1.

[0146] As indicated by the surface resistance values ​​in the table, all indicate electrical conductivity. Thereby, the problem of dust adsorption due to electrostatic charging is less likely to occur.

[0147] From the X-ray diffraction measurement of the films of Example 6 and Comparative Example 4, it was found that films with excellent crystallinity could be obtained in the same manner as in Example 1.

[0148] The film-shaped light-shielding plate of Comparative Example 4 produced by forming a titanium carbide oxide film with a total film thickness of 240 nm had an average optical density of less than 4.0 ...

Embodiment 7， comparative example 5

[0150] In addition to changing the total film thickness of the titanium carbide oxide film formed on the surface of the film to 500nm (250nm on each side) (Example 7) and to 220nm (110nm on each side) (Comparative Example 5), the same process as in Example 3 was carried out. The same method is used to manufacture a film-shaped visor. The results are shown in Table 1.

[0151] The surface resistance values ​​shown in the table all represent conductivity. This makes it difficult to generate static electricity and cause a problem of dust adsorption.

[0152] From the X-ray diffraction measurement of the films of Example 7 and Comparative Example 5, it can be seen that a film having excellent crystallinity can be obtained in the same manner as in Example 1.

[0153] The film-shaped light-shielding plate of Comparative Example 5 produced by forming a titanium carbide oxide film with a total film thickness of 220 nm had an average optical density of 3.68 at a wavelength of 400 to ...

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Abstract

Provided are a film-like light shielding plate and a digital camera, a stop of a digital camera, a light amount adjustable stop device for a projector or a shutter to which the film-like light shielding plate is applied, wherein the film-like light shielding plate is comprised of a light shielding thin film with a sufficient light shielding property and a low reflective property in a visible light area that is widely applicable to an optical member is formed on a resin film of a base substrate. A film-like light shielding plate includes a light shielding thin film (B) comprised of a crystalline titanium oxide-carbide film that is formed on at least one surface of a resin film substrate (A), wherein the film-like light shielding plate is characterized in that the light shielding thin film (B) contains an amount of carbon that is equal to or more than 0.6 in the atomic number ratio of C / Ti and contains an amount of oxide that ranges from 0.2 to 0.6 in the atomic number ratio of O / Ti, the total thickness of the light shielding thin film (B) is made to be equal to or more than 260 nm, and an average optical density in the wavelengths ranging from 400nm to 800nm is equal to or more than 4.0.

Description

technical field [0001] The present invention relates to a film-shaped light-shielding plate, a diaphragm using the light-shielding plate, an aperture device for adjusting light quantity, or a shutter. Diaphragm, a diaphragm device or a shutter for adjusting the light quantity of a projector. This film-shaped light-shielding plate is formed on a resin film as a base material and can be widely used in optical parts. It has sufficient light-shielding properties and low reflectivity in the visible light region. obtained from thin films. Background technique [0002] In recent years, the development of high-speed (mechanical) shutters has become popular in the field of digital cameras. Its purpose is to capture ultra-high-speed photographic subjects without blurring by increasing the shutter speed to obtain clear images. Generally, a shutter is opened and closed by rotating and moving a plurality of blades called shutter blades. Lightweight and high-friction movement are essen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/00G03B9/02G03B9/10
CPCG02B5/003G03B9/02G02B5/005Y10T428/265Y10T428/26Y10T428/2495Y10T428/24355
Inventor 阿部能之小野胜史塚越幸夫
Owner SUMITOMO METAL MINING CO LTD
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