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05-29-2013, 02:27 PM   #1
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New mirror box

It seems to me that this new mirror box has a mirror larger than the APS-C equivalents! What do you think about it?

http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fn...ntax&RS=pentax

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Rui

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Last edited by RuiC; 05-29-2013 at 05:26 PM. Reason: New link
05-29-2013, 02:47 PM   #2
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I cannot access the patent. What does it do? This is more than just a mirrorbox. SR?
05-29-2013, 02:54 PM   #3
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looks like a whole new mirror box, with new operating for the mirror action.
05-29-2013, 03:07 PM   #4
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QuoteOriginally posted by Pål Jensen Quote
I cannot access the patent. What does it do? This is more than just a mirrorbox. SR?

Yes, the link is bad. More importantly, does the lens release button stay attached to the camera?

05-29-2013, 04:35 PM   #5
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Is that patent assigned to Pentax/Ricoh or another manufacturer?
05-29-2013, 04:35 PM   #6
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Hi,

This patent can be shown in the following google patent:

Patent US20130108257 - Shock-absorbing mechanism for movable mirror of camera - Google Patents
05-29-2013, 05:13 PM   #7
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I don't have my K-5ii in front of me and I can't recall off the top of my head, but is that the correct number of SDM contacts? I can't recall if it's two or three.
05-29-2013, 05:28 PM   #8
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Sorry for that! I hope the link is working fine now! I don't understand why it's not working. The patent number is 20130108257 !


Rui

05-29-2013, 05:30 PM   #9
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Here is a link to the application.

Patent US20130108257 - Shock-absorbing mechanism for movable mirror of camera - Google Patents

From reading the application, it seems that this is a means of absorbing mirror shock to enable faster continuous shooting.
05-29-2013, 05:36 PM   #10
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The mirror is APS-C. The 2 contacts of SDM are in their places. Something different? I don't wanna open the camera to find out. So I shall wait.
05-29-2013, 05:40 PM   #11
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quote from patent text:

" medium) 19. The present embodiment of the camera 10 is a digital camera using the image sensor 19 as a photographic light-receiving medium; however, the present invention can also be applied to a camera using silver-salt film as a photographic light-receiving medium. " unquote
05-29-2013, 05:53 PM   #12
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And a better shock absorbant system is necessary for a bigger mirror.
05-29-2013, 06:43 PM   #13
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That is definitely an APS-C mirror box shown in that drawing. The FF K-mount mirror box's top left and right corners extend outside the mount circle (appearing to be cut off when viewed straight on). This drawing clearly shows both the box's top corners inside the circle.
05-29-2013, 07:39 PM   #14
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QuoteOriginally posted by RuiC Quote
It seems to me that this new mirror box has a mirror larger than the APS-C equivalents! What do you think about it?

United States Patent Application: 0130108257

Regards
Rui
I don't want to disappoint anyone, but that's an APS-C mirror box...
Here's what Pentax 135mm format mirror box looks like...

FYI this is a Pentax Z-1 film SLR with a locked-up mirror...
05-29-2013, 08:07 PM   #15
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With the rumor of a "pro-grade" APS-C from Pentax they might just be working on a system that can handle 10fps and having to redesign the box to handle the mirror and absorb vibration.

Looking at the mirror box on the Z-1 I don't think Pentax could design telecentric lenses for a full frame sensor.
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