JPH05264216A - Projector - Google Patents

Abstract

PURPOSE:To provide a projector capable of rapidly and efficiently taking pictures while reducing workers' loads and solving problems with the attachment and removal of a screen frame. CONSTITUTION:A base 12 is removably provided between a projecting lens 5 and a screen 8, and a slide plate 13 is slidably provided on the base and an image focusing lens 14 and a film pack holder 15 are disposed on the slide plate in such a manner as to be deviated in the direction in which they are slid. A douser 16 is slidably interposed between the film pack holder and the slide plate. The image focusing lens 14 and the film pack holder 15 are selectively located at the center of the cross line of the screen by sliding the slide plate 13, whereby pictures are taken.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector for irradiating an object to be measured with illumination light and magnifying and projecting transmitted light or reflected light from the object to be measured on a screen through a projection lens. In particular, it relates to a projector capable of taking a photograph of a magnified image of the object to be measured.

[0002]

BACKGROUND ART Illumination light is applied to an object to be measured placed on a stage, and transmitted light or reflected light from the object to be measured is enlarged and projected on a screen through a projection lens, and an enlarged projection image thereof is obtained. There is known a projector for measuring the size and shape of an object to be measured.

Conventionally, when a photograph is taken of a magnified projection image of an object to be measured in a projector, the following work is required. Before taking a picture, the portion to be photographed is enlarged and projected on the screen in advance, and in this state, after removing the screen frame from the main body, attach the photography device to the part where the screen frame was attached Take a picture. After taking the picture, remove the picture taking device from the main body and attach the screen frame to the part. Therefore, in order to take a photograph of a plurality of different positions of the object to be measured, the above-described work is repeated every time the imaged position of the object to be measured is enlarged and projected on the screen.

[0004]

The conventional working method has the following problems. When taking a picture, it is necessary to remove the screen frame from the main body and then attach the photo frame to that part, and after taking the photo, remove the photo frame from the main body and attach the screen frame to that part. ,
It has a drawback that it takes a lot of time and labor, and the work efficiency is extremely poor. In addition, in a large-sized projector, the screen frame is inevitably large and the weight is heavy, which imposes a heavy burden on the operator.

Focusing is performed in a state where a portion to be photographed is enlarged and projected on the screen,
Moreover, although the shooting location is checked, it is not possible to check whether the image is in focus and the shooting location in a state where the screen frame is removed from the main body and then the photography device is attached to the portion. Therefore, it is uneconomical because there are many wasteful shots.

Even if the screen frame is mounted on the part after the photo-taking device is removed from the main body after the photo-taking is finished, there is a low guarantee that the screen frame is always mounted at the same position as before due to the mounting error of the screen frame. That is,
There is a problem that the reproducibility of the mounting position is low.

The object of the present invention is to solve all of the problems of the prior art and to reduce the burden on the operator, to take pictures quickly and efficiently, and to avoid economical shooting without wasteful shooting. Another object of the present invention is to provide a projector which can solve the problems associated with attaching and detaching the screen frame.

[0008]

Therefore, in the projector of the present invention, the illumination light is applied to the object to be measured, and the transmitted light or the reflected light from the object to be measured is enlarged and projected on the screen through the projection lens. In the projector, the substrate is provided between the projection lens and the screen so that the substrate can be inserted and removed, and the slide plate is slidably provided on the substrate, and the transmitted light or the reflected light from the measured object is provided on the slide plate. An imaging system lens for forming an image on the screen and a film pack holder accommodating a photographic film are arranged so as to be displaced in the sliding direction, and a light shielding plate can be slid between the film pack holder and the slide plate. It is characterized by intervening.

[0009]

To take a picture, first, the substrate is inserted between the projection lens and the screen and fixed at a predetermined position. Next, while the slide plate is slid with respect to the substrate, the imaging system lens is positioned at the center of the screen reference line, for example, the cross line. When the object to be measured is irradiated with the illumination light in this state, the transmitted light or the reflected light from the object to be measured passes through the projection lens and the imaging system lens to form an image on the screen. Here, focusing is performed.

When the subject is in focus, the film pack holder is set in a photographable state, and after confirming the photographing position, the film pack holder is slid on the substrate while the film pack holder is moved to a reference line of the screen, for example, Position it in the center of the crosshair. Here, for example, in a state where the shutter is fixed to the tip of the projection lens, the light-shielding plate is slid to allow exposure, and then the shutter is released to take a photograph. After that, the light shielding plate is slid to block light. This completes a series of operations for taking a picture.

[0011]

The preferred embodiments of the projector of the present invention will be described below in detail with reference to the accompanying drawings. The projector according to the present embodiment has a main body 1 as shown in FIGS.
And an object to be measured is placed on the upper surface of the main body 1 so as to be vertically movable (Z direction) and slidable in two biaxial directions (X direction and Y direction) orthogonal to each other in a horizontal plane. A stage 2 made of glass or the like, and the main body 1
A light source 3 provided in the lower portion of the main body 1 for illuminating an object to be measured through the object table 2 and a transmitted illumination light from the object to be measured provided in an upper portion of the main body 1 on a screen 8; And an image forming unit 4 for enlarging and projecting.

The image forming means 4 has a projection lens 5 for collecting the transmitted illumination light from the object to be measured, and the projection lens 5
A first reflecting mirror 6 for reflecting the illumination light passing through the light obliquely upward, and a second reflecting mirror for reflecting the illumination light reflected by the first reflecting mirror 6 in a substantially horizontal direction to reach the screen 8. It is composed of a mirror 7. A shutter 9 whose shutter speed is adjustable can be detachably attached to the lower end of the projection lens 5.

Between the projection lens 5 and the screen 8, more specifically, the second reflecting mirror 7 and the screen 8 are provided.
A photo-taking device 11 is detachably inserted from the outside of one side wall of the main body 1 portion between and. As shown in FIG. 3, the photographic device 11 includes a substrate 12 that can be inserted and removed in parallel with the screen 8 along guides 10A and 10B (see FIG. 1) provided in the upper portion of the main body 1, A slide plate 13 provided on the surface of the substrate 12 on the screen 8 side so as to be slidable in the horizontal direction in parallel with the surface of the screen 8, and an imaging system arranged on the slide plate 13 so as to be displaced in the sliding direction. It is composed of a film pack holder (for example, made of Polaroid) 15 which houses a lens 14 and a photographing film, and a light shielding plate 16 slidably interposed between the film pack holder 15 and the slide plate 13. ..

A through hole 21 for passing the illumination light is formed at a substantially central position of the substrate 12, and
A dovetail groove 22 is formed on the surface of the screen 8 side for engaging the slide plate 13 in parallel with the surface of the screen 8 and slidably in the horizontal direction. Further, the upper and lower edges of the slide plate 13 are formed into tapered surfaces 23 and 24 slidably engaging with the dovetail groove 22, and the film pack holder 15 is detachably held on the screen 8 side surface. Holding pieces 25, 26 for holding the light shielding plate 16 and holding grooves 27 for slidably holding the light shielding plate 16 are formed. Although not shown, a through hole corresponding to the through hole 21 of the substrate 11 is also formed in a portion where the film pack halter 15 is held.

Next, a method of using this embodiment will be described. In taking a picture, first, the substrate 12 is inserted into the upper portion of the main body 1, the upper and lower edges thereof are inserted along the guides 10A and 10B, and the predetermined position is positioned through a click mechanism (not shown) or the like. Subsequently, the imaging system lens 14 is positioned at the center of the crosshairs of the screen 8 while sliding the slide plate 13 with respect to the substrate 12. When the light source 3 is turned on in this state, the illumination light from the light source 3 irradiates the object to be measured, then passes through the projection lens 5, and is coupled via the first reflecting mirror 6 and the second reflecting mirror 7. An image is formed on the screen 8 through the image system lens 14.

Here, focusing is performed. Focusing is performed by raising and lowering the stage 2 in the vertical direction (Z direction) with respect to the main body 1. If the image is in focus, slide the slide plate 13 to the right in FIG. 2 to pull out the paper from the film pack holder 15 and set it in a state in which it can be photographed. 1
Position 4 in the center of the crosshairs on screen 8. Here, after confirming the photographing location of the object to be measured while sliding the stage 2 in the biaxial directions (X direction and Y direction) orthogonal to each other in the horizontal plane, while sliding the slide plate 13,
The film pack holder 15 is positioned at the center of the crosshairs on the screen 8.

Here, after the shutter speed of the shutter 9 is selected, it is fixed to the tip of the projection lens 5. In this state, the shading plate 16 is slid to the right in FIG. 2 so that the film in the film pack halter 15 can be exposed, and then the shutter 9 is released to take a photograph. After that, if the light shielding plate 16 is slid to the original position so as to be in a light shielding state, a series of operations for photographing is completed.

Therefore, according to the present embodiment, the photographing device 11 is detachably attached to the upper part of the main body 1 so that the photographing can be performed. It is possible to eliminate the work of attaching the photo-taking device and the work of removing the photo-taking device from the main body after the photo-taking is finished and attaching the screen frame to that part, so the burden on the operator can be reduced,
Photographing work can be performed quickly and efficiently.

That is, since it is not necessary to remove or attach the screen frame, when the photo frame is attached to the part after the photography device is removed from the main body, as in the conventional case, The problem that the screen frame cannot always be installed at the same position as before due to the screen frame installation error can be solved. That is, the problem that the reproducibility of the mounting position is low can be solved.

A photographing device 11 is provided on the upper portion of the main body 1.
After mounting, the slide plate 13 is slid to position the imaging system lens 14 at the center of the crosshairs of the screen 8, and then the illumination light from the light source 3 irradiates the DUT,
An image is formed on the screen 8 through the projection lens 5, the first reflection mirror 6 and the second reflection mirror 7, and the image formation system lens 14, so that the stage 2 is moved vertically and vertically. If you slide it horizontally, you can focus and check the shooting location. Therefore, with the photographic device attached, it is possible to confirm whether or not the subject is in focus and confirm the photographing location, so that it is possible to reduce unnecessary photographing and economical photographing.

The present invention is not limited to the configuration of the above embodiment, and various improvements and design changes can be made without departing from the gist of the present invention.

For example, in the above embodiment, the projector for illuminating the object to be measured with the illumination light and enlarging and projecting the transmitted light on the screen has been described. However, the reflected light from the object to be measured is magnified and projected on the screen. It can also be applied to projectors of the type. Further, in the above-described embodiment, the substrate 12 is configured to be inserted into the upper portion of the main body 1 from the horizontal direction.
It may be configured to be insertable from above and below in the upper direction.

[0023]

As described above, according to the projector of the present invention,
While reducing the burden on the operator, you can take pictures quickly and efficiently, economically without wasteful shooting,
It is expected that the problem of attaching and removing the screen frame can be solved.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

FIG. 2 is a front view showing an embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a photographic device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Mounting stage 3 Light source 4 Imaging means 5 Projection lens 8 Screen 9 Shutter 11 Photographing device 12 Substrate 13 Slide plate 14 Imaging system lens 15 Film pack holder 16 Light-shielding plate

Claims (1)

[Claims] 1. A projector for irradiating an object to be measured with illumination light and magnifying and projecting transmitted light or reflected light from the object to be measured onto a screen through a projection lens, wherein the projection lens and the screen are provided. A substrate is provided so that it can be inserted and removed, and a slide plate is provided slidably on this substrate, and an imaging system lens that forms an image of transmitted light or reflected light from the object to be measured on the screen on the slide plate, A projector, wherein a film pack holder accommodating a photographic film is arranged so as to be displaced in a sliding direction, and a light shielding plate is slidably interposed between the film pack holder and the slide plate.